之前使用PDF模板的表單是數字，讀取過程中是有序排列的，最近讀取PDF表單內容的過程中發現，對于中文的讀取是無序的，如果表單的內容過多，使用會很麻煩。

用到的JAVA包:

itextpdf-5.5.0.jar

最終只能修改JAR包，代碼如下：

public class AcroFields {PdfReader reader;PdfWriter writer;Map<String, Item> fields;private int topFirst;private HashMap<String, int[]> sigNames;private boolean append;public static final int DA_FONT = 0;public static final int DA_SIZE = 1;public static final int DA_COLOR = 2;private HashMap<Integer, BaseFont> extensionFonts = new HashMap<Integer, BaseFont>();private XfaForm xfa;/*** A field type invalid or not found.*/public static final int FIELD_TYPE_NONE = 0;/*** A field type.*/public static final int FIELD_TYPE_PUSHBUTTON = 1;/*** A field type.*/public static final int FIELD_TYPE_CHECKBOX = 2;/*** A field type.*/public static final int FIELD_TYPE_RADIOBUTTON = 3;/*** A field type.*/public static final int FIELD_TYPE_TEXT = 4;/*** A field type.*/public static final int FIELD_TYPE_LIST = 5;/*** A field type.*/public static final int FIELD_TYPE_COMBO = 6;/*** A field type.*/public static final int FIELD_TYPE_SIGNATURE = 7;private boolean lastWasString;/** Holds value of property generateAppearances. */private boolean generateAppearances = true;private HashMap<String, BaseFont> localFonts = new HashMap<String, BaseFont>();private float extraMarginLeft;private float extraMarginTop;private ArrayList<BaseFont> substitutionFonts;AcroFields(PdfReader reader, PdfWriter writer) {this.reader = reader;this.writer = writer;try {xfa = new XfaForm(reader);}catch (Exception e) {throw new ExceptionConverter(e);}if (writer instanceof PdfStamperImp) {append = ((PdfStamperImp)writer).isAppend();}fill();}void fill() {fields = new LinkedHashMap<String, Item>();PdfDictionary top = (PdfDictionary)PdfReader.getPdfObjectRelease(reader.getCatalog().get(PdfName.ACROFORM));if (top == null)return;PdfArray arrfds = (PdfArray)PdfReader.getPdfObjectRelease(top.get(PdfName.FIELDS));if (arrfds == null || arrfds.size() == 0)return;for (int k = 1; k <= reader.getNumberOfPages(); ++k) {PdfDictionary page = reader.getPageNRelease(k);PdfArray annots = (PdfArray)PdfReader.getPdfObjectRelease(page.get(PdfName.ANNOTS), page);if (annots == null)continue;for (int j = 0; j < annots.size(); ++j) {PdfDictionary annot = annots.getAsDict(j);if (annot == null) {PdfReader.releaseLastXrefPartial(annots.getAsIndirectObject(j));continue;}if (!PdfName.WIDGET.equals(annot.getAsName(PdfName.SUBTYPE))) {PdfReader.releaseLastXrefPartial(annots.getAsIndirectObject(j));continue;}PdfDictionary widget = annot;PdfDictionary dic = new PdfDictionary();dic.putAll(annot);String name = "";PdfDictionary value = null;PdfObject lastV = null;while (annot != null) {dic.mergeDifferent(annot);PdfString t = annot.getAsString(PdfName.T);if (t != null)name = t.toUnicodeString() + "." + name;if (lastV == null && annot.get(PdfName.V) != null)lastV = PdfReader.getPdfObjectRelease(annot.get(PdfName.V));if (value == null && t != null) {value = annot;if (annot.get(PdfName.V) == null && lastV != null)value.put(PdfName.V, lastV);}annot = annot.getAsDict(PdfName.PARENT);}if (name.length() > 0)name = name.substring(0, name.length() - 1);Item item = fields.get(name);if (item == null) {item = new Item();fields.put(name, item);}if (value == null)item.addValue(widget);elseitem.addValue(value);item.addWidget(widget);item.addWidgetRef(annots.getAsIndirectObject(j)); // must be a referenceif (top != null)dic.mergeDifferent(top);item.addMerged(dic);item.addPage(k);item.addTabOrder(j);}}// some tools produce invisible signatures without an entry in the page annotation array// look for a single level annotationPdfNumber sigFlags = top.getAsNumber(PdfName.SIGFLAGS);if (sigFlags == null || (sigFlags.intValue() & 1) != 1)return;for (int j = 0; j < arrfds.size(); ++j) {PdfDictionary annot = arrfds.getAsDict(j);if (annot == null) {PdfReader.releaseLastXrefPartial(arrfds.getAsIndirectObject(j));continue;}if (!PdfName.WIDGET.equals(annot.getAsName(PdfName.SUBTYPE))) {PdfReader.releaseLastXrefPartial(arrfds.getAsIndirectObject(j));continue;}PdfArray kids = (PdfArray)PdfReader.getPdfObjectRelease(annot.get(PdfName.KIDS));if (kids != null)continue;PdfDictionary dic = new PdfDictionary();dic.putAll(annot);PdfString t = annot.getAsString(PdfName.T);if (t == null)continue;String name = t.toUnicodeString();if (fields.containsKey(name))continue;Item item = new Item();fields.put(name, item);item.addValue(dic);item.addWidget(dic);item.addWidgetRef(arrfds.getAsIndirectObject(j)); // must be a referenceitem.addMerged(dic);item.addPage(-1);item.addTabOrder(-1);}}/*** Gets the list of appearance names. Use it to get the names allowed* with radio and checkbox fields. If the /Opt key exists the values will* also be included. The name 'Off' may also be valid* even if not returned in the list.** @param fieldName the fully qualified field name* @return the list of names or <CODE>null</CODE> if the field does not exist*/public String[] getAppearanceStates(String fieldName) {Item fd = fields.get(fieldName);if (fd == null)return null;HashSet<String> names = new HashSet<String>();PdfDictionary vals = fd.getValue(0);PdfString stringOpt = vals.getAsString( PdfName.OPT );if (stringOpt != null) {names.add(stringOpt.toUnicodeString());}else {PdfArray arrayOpt = vals.getAsArray(PdfName.OPT);if (arrayOpt != null) {for (int k = 0; k < arrayOpt.size(); ++k) {PdfString valStr = arrayOpt.getAsString( k );if (valStr != null)names.add(valStr.toUnicodeString());}}}for (int k = 0; k < fd.size(); ++k) {PdfDictionary dic = fd.getWidget( k );dic = dic.getAsDict(PdfName.AP);if (dic == null)continue;dic = dic.getAsDict(PdfName.N);if (dic == null)continue;for (Object element : dic.getKeys()) {String name = PdfName.decodeName(((PdfName)element).toString());names.add(name);}}String out[] = new String[names.size()];return names.toArray(out);}private String[] getListOption(String fieldName, int idx) {Item fd = getFieldItem(fieldName);if (fd == null)return null;PdfArray ar = fd.getMerged(0).getAsArray(PdfName.OPT);if (ar == null)return null;String[] ret = new String[ar.size()];for (int k = 0; k < ar.size(); ++k) {PdfObject obj = ar.getDirectObject( k );try {if (obj.isArray()) {obj = ((PdfArray)obj).getDirectObject(idx);}if (obj.isString())ret[k] = ((PdfString)obj).toUnicodeString();elseret[k] = obj.toString();}catch (Exception e) {ret[k] = "";}}return ret;}/*** Gets the list of export option values from fields of type list or combo.* If the field doesn't exist or the field type is not list or combo it will return* <CODE>null</CODE>.** @param fieldName the field name* @return the list of export option values from fields of type list or combo*/public String[] getListOptionExport(String fieldName) {return getListOption(fieldName, 0);}/*** Gets the list of display option values from fields of type list or combo.* If the field doesn't exist or the field type is not list or combo it will return* <CODE>null</CODE>.** @param fieldName the field name* @return the list of export option values from fields of type list or combo*/public String[] getListOptionDisplay(String fieldName) {return getListOption(fieldName, 1);}/*** Sets the option list for fields of type list or combo. One of <CODE>exportValues</CODE>* or <CODE>displayValues</CODE> may be <CODE>null</CODE> but not both. This method will only* set the list but will not set the value or appearance. For that, calling <CODE>setField()</CODE>* is required.* <p>* An example:* <p>* <PRE>* PdfReader pdf = new PdfReader("input.pdf");* PdfStamper stp = new PdfStamper(pdf, new FileOutputStream("output.pdf"));* AcroFields af = stp.getAcroFields();* af.setListOption("ComboBox", new String[]{"a", "b", "c"}, new String[]{"first", "second", "third"});* af.setField("ComboBox", "b");* stp.close();* </PRE>** @param fieldName the field name* @param exportValues the export values* @param displayValues the display values* @return <CODE>true</CODE> if the operation succeeded, <CODE>false</CODE> otherwise*/public boolean setListOption(String fieldName, String[] exportValues, String[] displayValues) {if (exportValues == null && displayValues == null)return false;if (exportValues != null && displayValues != null && exportValues.length != displayValues.length)throw new IllegalArgumentException(MessageLocalization.getComposedMessage("the.export.and.the.display.array.must.have.the.same.size"));int ftype = getFieldType(fieldName);if (ftype != FIELD_TYPE_COMBO && ftype != FIELD_TYPE_LIST)return false;Item fd = fields.get(fieldName);String[] sing = null;if (exportValues == null && displayValues != null)sing = displayValues;else if (exportValues != null && displayValues == null)sing = exportValues;PdfArray opt = new PdfArray();if (sing != null) {for (int k = 0; k < sing.length; ++k)opt.add(new PdfString(sing[k], PdfObject.TEXT_UNICODE));}else {for (int k = 0; k < exportValues.length; ++k) {PdfArray a = new PdfArray();a.add(new PdfString(exportValues[k], PdfObject.TEXT_UNICODE));a.add(new PdfString(displayValues[k], PdfObject.TEXT_UNICODE));opt.add(a);}}fd.writeToAll( PdfName.OPT, opt, Item.WRITE_VALUE | Item.WRITE_MERGED );return true;}/*** Gets the field type. The type can be one of: <CODE>FIELD_TYPE_PUSHBUTTON</CODE>,* <CODE>FIELD_TYPE_CHECKBOX</CODE>, <CODE>FIELD_TYPE_RADIOBUTTON</CODE>,* <CODE>FIELD_TYPE_TEXT</CODE>, <CODE>FIELD_TYPE_LIST</CODE>,* <CODE>FIELD_TYPE_COMBO</CODE> or <CODE>FIELD_TYPE_SIGNATURE</CODE>.* <p>* If the field does not exist or is invalid it returns* <CODE>FIELD_TYPE_NONE</CODE>.** @param fieldName the field name* @return the field type*/public int getFieldType(String fieldName) {Item fd = getFieldItem(fieldName);if (fd == null)return FIELD_TYPE_NONE;PdfDictionary merged = fd.getMerged( 0 );PdfName type = merged.getAsName(PdfName.FT);if (type == null)return FIELD_TYPE_NONE;int ff = 0;PdfNumber ffo = merged.getAsNumber(PdfName.FF);if (ffo != null) {ff = ffo.intValue();}if (PdfName.BTN.equals(type)) {if ((ff & PdfFormField.FF_PUSHBUTTON) != 0)return FIELD_TYPE_PUSHBUTTON;if ((ff & PdfFormField.FF_RADIO) != 0)return FIELD_TYPE_RADIOBUTTON;elsereturn FIELD_TYPE_CHECKBOX;}else if (PdfName.TX.equals(type)) {return FIELD_TYPE_TEXT;}else if (PdfName.CH.equals(type)) {if ((ff & PdfFormField.FF_COMBO) != 0)return FIELD_TYPE_COMBO;elsereturn FIELD_TYPE_LIST;}else if (PdfName.SIG.equals(type)) {return FIELD_TYPE_SIGNATURE;}return FIELD_TYPE_NONE;}/*** Export the fields as a FDF.** @param writer the FDF writer*/public void exportAsFdf(FdfWriter writer) {for (Map.Entry<String, Item> entry : fields.entrySet()) {Item item = entry.getValue();String name = entry.getKey();PdfObject v = item.getMerged(0).get(PdfName.V);if (v == null)continue;String value = getField(name);if (lastWasString)writer.setFieldAsString(name, value);elsewriter.setFieldAsName(name, value);}}/*** Renames a field. Only the last part of the name can be renamed. For example,* if the original field is "ab.cd.ef" only the "ef" part can be renamed.** @param oldName the old field name* @param newName the new field name* @return <CODE>true</CODE> if the renaming was successful, <CODE>false</CODE>* otherwise*/public boolean renameField(String oldName, String newName) {int idx1 = oldName.lastIndexOf('.') + 1;int idx2 = newName.lastIndexOf('.') + 1;if (idx1 != idx2)return false;if (!oldName.substring(0, idx1).equals(newName.substring(0, idx2)))return false;if (fields.containsKey(newName))return false;Item item = fields.get(oldName);if (item == null)return false;newName = newName.substring(idx2);PdfString ss = new PdfString(newName, PdfObject.TEXT_UNICODE);item.writeToAll( PdfName.T, ss, Item.WRITE_VALUE | Item.WRITE_MERGED);item.markUsed( this, Item.WRITE_VALUE );fields.remove(oldName);fields.put(newName, item);return true;}public static Object[] splitDAelements(String da) {try {RandomAccessFileOrArray file = new RandomAccessFileOrArray(PdfEncodings.convertToBytes(da, null));PRTokeniser tk = new PRTokeniser(file );ArrayList<String> stack = new ArrayList<String>();Object ret[] = new Object[3];while (tk.nextToken()) {if (tk.getTokenType() == TokenType.COMMENT)continue;if (tk.getTokenType() == TokenType.OTHER) {String operator = tk.getStringValue();if (operator.equals("Tf")) {if (stack.size() >= 2) {ret[DA_FONT] = stack.get(stack.size() - 2);ret[DA_SIZE] = new Float(stack.get(stack.size() - 1));}}else if (operator.equals("g")) {if (stack.size() >= 1) {float gray = new Float(stack.get(stack.size() - 1)).floatValue();if (gray != 0)ret[DA_COLOR] = new GrayColor(gray);}}else if (operator.equals("rg")) {if (stack.size() >= 3) {float red = new Float(stack.get(stack.size() - 3)).floatValue();float green = new Float(stack.get(stack.size() - 2)).floatValue();float blue = new Float(stack.get(stack.size() - 1)).floatValue();ret[DA_COLOR] = new BaseColor(red, green, blue);}}else if (operator.equals("k")) {if (stack.size() >= 4) {float cyan = new Float(stack.get(stack.size() - 4)).floatValue();float magenta = new Float(stack.get(stack.size() - 3)).floatValue();float yellow = new Float(stack.get(stack.size() - 2)).floatValue();float black = new Float(stack.get(stack.size() - 1)).floatValue();ret[DA_COLOR] = new CMYKColor(cyan, magenta, yellow, black);}}stack.clear();}elsestack.add(tk.getStringValue());}return ret;}catch (IOException ioe) {throw new ExceptionConverter(ioe);}}public void decodeGenericDictionary(PdfDictionary merged, BaseField tx) throws IOException, DocumentException {int flags = 0;// the text size and colorPdfString da = merged.getAsString(PdfName.DA);if (da != null) {Object dab[] = splitDAelements(da.toUnicodeString());if (dab[DA_SIZE] != null)tx.setFontSize(((Float)dab[DA_SIZE]).floatValue());if (dab[DA_COLOR] != null)tx.setTextColor((BaseColor)dab[DA_COLOR]);if (dab[DA_FONT] != null) {PdfDictionary font = merged.getAsDict(PdfName.DR);if (font != null) {font = font.getAsDict(PdfName.FONT);if (font != null) {PdfObject po = font.get(new PdfName((String)dab[DA_FONT]));if (po != null && po.type() == PdfObject.INDIRECT) {PRIndirectReference por = (PRIndirectReference)po;BaseFont bp = new DocumentFont((PRIndirectReference)po);tx.setFont(bp);Integer porkey = new Integer(por.getNumber());BaseFont porf = extensionFonts.get(porkey);if (porf == null) {if (!extensionFonts.containsKey(porkey)) {PdfDictionary fo = (PdfDictionary)PdfReader.getPdfObject(po);PdfDictionary fd = fo.getAsDict(PdfName.FONTDESCRIPTOR);if (fd != null) {PRStream prs = (PRStream)PdfReader.getPdfObject(fd.get(PdfName.FONTFILE2));if (prs == null)prs = (PRStream)PdfReader.getPdfObject(fd.get(PdfName.FONTFILE3));if (prs == null) {extensionFonts.put(porkey, null);}else {try {porf = BaseFont.createFont("font.ttf", BaseFont.IDENTITY_H, true, false, PdfReader.getStreamBytes(prs), null);}catch (Exception e) {}extensionFonts.put(porkey, porf);}}}}if (tx instanceof TextField)((TextField)tx).setExtensionFont(porf);}else {BaseFont bf = localFonts.get(dab[DA_FONT]);if (bf == null) {String fn[] = stdFieldFontNames.get(dab[DA_FONT]);if (fn != null) {try {String enc = "winansi";if (fn.length > 1)enc = fn[1];bf = BaseFont.createFont(fn[0], enc, false);tx.setFont(bf);}catch (Exception e) {// empty}}}elsetx.setFont(bf);}}}}}//rotation, border and background colorPdfDictionary mk = merged.getAsDict(PdfName.MK);if (mk != null) {PdfArray ar = mk.getAsArray(PdfName.BC);BaseColor border = getMKColor(ar);tx.setBorderColor(border);if (border != null)tx.setBorderWidth(1);ar = mk.getAsArray(PdfName.BG);tx.setBackgroundColor(getMKColor(ar));PdfNumber rotation = mk.getAsNumber(PdfName.R);if (rotation != null)tx.setRotation(rotation.intValue());}//flagsPdfNumber nfl = merged.getAsNumber(PdfName.F);flags = 0;tx.setVisibility(BaseField.VISIBLE_BUT_DOES_NOT_PRINT);if (nfl != null) {flags = nfl.intValue();if ((flags & PdfFormField.FLAGS_PRINT) != 0 && (flags & PdfFormField.FLAGS_HIDDEN) != 0)tx.setVisibility(BaseField.HIDDEN);else if ((flags & PdfFormField.FLAGS_PRINT) != 0 && (flags & PdfFormField.FLAGS_NOVIEW) != 0)tx.setVisibility(BaseField.HIDDEN_BUT_PRINTABLE);else if ((flags & PdfFormField.FLAGS_PRINT) != 0)tx.setVisibility(BaseField.VISIBLE);}//multilinenfl = merged.getAsNumber(PdfName.FF);flags = 0;if (nfl != null)flags = nfl.intValue();tx.setOptions(flags);if ((flags & PdfFormField.FF_COMB) != 0) {PdfNumber maxLen = merged.getAsNumber(PdfName.MAXLEN);int len = 0;if (maxLen != null)len = maxLen.intValue();tx.setMaxCharacterLength(len);}//alignmentnfl = merged.getAsNumber(PdfName.Q);if (nfl != null) {if (nfl.intValue() == PdfFormField.Q_CENTER)tx.setAlignment(Element.ALIGN_CENTER);else if (nfl.intValue() == PdfFormField.Q_RIGHT)tx.setAlignment(Element.ALIGN_RIGHT);}//border stylesPdfDictionary bs = merged.getAsDict(PdfName.BS);if (bs != null) {PdfNumber w = bs.getAsNumber(PdfName.W);if (w != null)tx.setBorderWidth(w.floatValue());PdfName s = bs.getAsName(PdfName.S);if (PdfName.D.equals(s))tx.setBorderStyle(PdfBorderDictionary.STYLE_DASHED);else if (PdfName.B.equals(s))tx.setBorderStyle(PdfBorderDictionary.STYLE_BEVELED);else if (PdfName.I.equals(s))tx.setBorderStyle(PdfBorderDictionary.STYLE_INSET);else if (PdfName.U.equals(s))tx.setBorderStyle(PdfBorderDictionary.STYLE_UNDERLINE);}else {PdfArray bd = merged.getAsArray(PdfName.BORDER);if (bd != null) {if (bd.size() >= 3)tx.setBorderWidth(bd.getAsNumber(2).floatValue());if (bd.size() >= 4)tx.setBorderStyle(PdfBorderDictionary.STYLE_DASHED);}}}PdfAppearance getAppearance(PdfDictionary merged, String values[], String fieldName) throws IOException, DocumentException {topFirst = 0;String text = values.length > 0 ? values[0] : null;TextField tx = null;if (fieldCache == null || !fieldCache.containsKey(fieldName)) {tx = new TextField(writer, null, null);tx.setExtraMargin(extraMarginLeft, extraMarginTop);tx.setBorderWidth(0);tx.setSubstitutionFonts(substitutionFonts);decodeGenericDictionary(merged, tx);//rectPdfArray rect = merged.getAsArray(PdfName.RECT);Rectangle box = PdfReader.getNormalizedRectangle(rect);if (tx.getRotation() == 90 || tx.getRotation() == 270)box = box.rotate();tx.setBox(box);if (fieldCache != null)fieldCache.put(fieldName, tx);}else {tx = fieldCache.get(fieldName);tx.setWriter(writer);}PdfName fieldType = merged.getAsName(PdfName.FT);if (PdfName.TX.equals(fieldType)) {if (values.length > 0 && values[0] != null) {tx.setText(values[0]);}return tx.getAppearance();}if (!PdfName.CH.equals(fieldType))throw new DocumentException(MessageLocalization.getComposedMessage("an.appearance.was.requested.without.a.variable.text.field"));PdfArray opt = merged.getAsArray(PdfName.OPT);int flags = 0;PdfNumber nfl = merged.getAsNumber(PdfName.FF);if (nfl != null)flags = nfl.intValue();if ((flags & PdfFormField.FF_COMBO) != 0 && opt == null) {tx.setText(text);return tx.getAppearance();}if (opt != null) {String choices[] = new String[opt.size()];String choicesExp[] = new String[opt.size()];for (int k = 0; k < opt.size(); ++k) {PdfObject obj = opt.getPdfObject(k);if (obj.isString()) {choices[k] = choicesExp[k] = ((PdfString)obj).toUnicodeString();}else {PdfArray a = (PdfArray) obj;choicesExp[k] = a.getAsString(0).toUnicodeString();choices[k] = a.getAsString(1).toUnicodeString();}}if ((flags & PdfFormField.FF_COMBO) != 0) {for (int k = 0; k < choices.length; ++k) {if (text.equals(choicesExp[k])) {text = choices[k];break;}}tx.setText(text);return tx.getAppearance();}ArrayList<Integer> indexes = new ArrayList<Integer>();for (int k = 0; k < choicesExp.length; ++k) {for (int j = 0; j < values.length; ++j) {String val = values[j];if (val != null && val.equals(choicesExp[k])) {indexes.add( new Integer( k ) );break;}}}tx.setChoices(choices);tx.setChoiceExports(choicesExp);tx.setChoiceSelections( indexes );}PdfAppearance app = tx.getListAppearance();topFirst = tx.getTopFirst();return app;}PdfAppearance getAppearance(PdfDictionary merged, String text, String fieldName) throws IOException, DocumentException {String valueArr[] = new String[1];valueArr[0] = text;return getAppearance( merged, valueArr, fieldName );}BaseColor getMKColor(PdfArray ar) {if (ar == null)return null;switch (ar.size()) {case 1:return new GrayColor(ar.getAsNumber(0).floatValue());case 3:return new BaseColor(ExtendedColor.normalize(ar.getAsNumber(0).floatValue()), ExtendedColor.normalize(ar.getAsNumber(1).floatValue()), ExtendedColor.normalize(ar.getAsNumber(2).floatValue()));case 4:return new CMYKColor(ar.getAsNumber(0).floatValue(), ar.getAsNumber(1).floatValue(), ar.getAsNumber(2).floatValue(), ar.getAsNumber(3).floatValue());default:return null;}}/*** Gets the field value.** @param name the fully qualified field name* @return the field value*/public String getField(String name) {if (xfa.isXfaPresent()) {name = xfa.findFieldName(name, this);if (name == null)return null;name = XfaForm.Xml2Som.getShortName(name);return XfaForm.getNodeText(xfa.findDatasetsNode(name));}Item item = fields.get(name);if (item == null)return null;lastWasString = false;PdfDictionary mergedDict = item.getMerged( 0 );// Jose A. Rodriguez posted a fix to the mailing list (May 11, 2009)// explaining that the value can also be a stream value// the fix was made against an old iText version. Bruno adapted it.PdfObject v = PdfReader.getPdfObject(mergedDict.get(PdfName.V));if (v == null)return "";if (v instanceof PRStream) {byte[] valBytes;try {valBytes = PdfReader.getStreamBytes((PRStream)v);return new String(valBytes);} catch (IOException e) {throw new ExceptionConverter(e);}}PdfName type = mergedDict.getAsName(PdfName.FT);if (PdfName.BTN.equals(type)) {PdfNumber ff = mergedDict.getAsNumber(PdfName.FF);int flags = 0;if (ff != null)flags = ff.intValue();if ((flags & PdfFormField.FF_PUSHBUTTON) != 0)return "";String value = "";if (v instanceof PdfName)value = PdfName.decodeName(v.toString());else if (v instanceof PdfString)value = ((PdfString)v).toUnicodeString();PdfArray opts = item.getValue(0).getAsArray(PdfName.OPT);if (opts != null) {int idx = 0;try {idx = Integer.parseInt(value);PdfString ps = opts.getAsString(idx);value = ps.toUnicodeString();lastWasString = true;}catch (Exception e) {}}return value;}if (v instanceof PdfString) {lastWasString = true;return ((PdfString)v).toUnicodeString();} else if (v instanceof PdfName) {return PdfName.decodeName(v.toString());} elsereturn "";}/*** Gets the field values of a Choice field.** @param name the fully qualified field name* @return the field value* @since 2.1.3*/public String[] getListSelection(String name) {String[] ret;String s = getField(name);if (s == null) {ret = new String[]{};}else {ret = new String[]{ s };}Item item = fields.get(name);if (item == null)return ret;//PdfName type = (PdfName)PdfReader.getPdfObject(((PdfDictionary)item.merged.get(0)).get(PdfName.FT));//if (!PdfName.CH.equals(type)) {// return ret;//}PdfArray values = item.getMerged(0).getAsArray(PdfName.I);if (values == null)return ret;ret = new String[values.size()];String[] options = getListOptionExport(name);PdfNumber n;int idx = 0;for (Iterator<PdfObject> i = values.listIterator(); i.hasNext(); ) {n = (PdfNumber)i.next();ret[idx++] = options[n.intValue()];}return ret;}/*** Sets a field property. Valid property names are:* <p>* <ul>* <li>textfont - sets the text font. The value for this entry is a <CODE>BaseFont</CODE>.<br>* <li>textcolor - sets the text color. The value for this entry is a <CODE>BaseColor</CODE>.<br>* <li>textsize - sets the text size. The value for this entry is a <CODE>Float</CODE>.* <li>bgcolor - sets the background color. The value for this entry is a <CODE>BaseColor</CODE>.* If <code>null</code> removes the background.<br>* <li>bordercolor - sets the border color. The value for this entry is a <CODE>BaseColor</CODE>.* If <code>null</code> removes the border.<br>* </ul>** @param field the field name* @param name the property name* @param value the property value* @param inst an array of <CODE>int</CODE> indexing into <CODE>AcroField.Item.merged</CODE> elements to process.* Set to <CODE>null</CODE> to process all* @return <CODE>true</CODE> if the property exists, <CODE>false</CODE> otherwise*/public boolean setFieldProperty(String field, String name, Object value, int inst[]) {if (writer == null)throw new RuntimeException(MessageLocalization.getComposedMessage("this.acrofields.instance.is.read.only"));try {Item item = fields.get(field);if (item == null)return false;InstHit hit = new InstHit(inst);PdfDictionary merged;PdfString da;if (name.equalsIgnoreCase("textfont")) {for (int k = 0; k < item.size(); ++k) {if (hit.isHit(k)) {merged = item.getMerged( k );da = merged.getAsString(PdfName.DA);PdfDictionary dr = merged.getAsDict(PdfName.DR);if (da != null && dr != null) {Object dao[] = splitDAelements(da.toUnicodeString());PdfAppearance cb = new PdfAppearance();if (dao[DA_FONT] != null) {BaseFont bf = (BaseFont)value;PdfName psn = PdfAppearance.stdFieldFontNames.get(bf.getPostscriptFontName());if (psn == null) {psn = new PdfName(bf.getPostscriptFontName());}PdfDictionary fonts = dr.getAsDict(PdfName.FONT);if (fonts == null) {fonts = new PdfDictionary();dr.put(PdfName.FONT, fonts);}PdfIndirectReference fref = (PdfIndirectReference)fonts.get(psn);PdfDictionary top = reader.getCatalog().getAsDict(PdfName.ACROFORM);markUsed(top);dr = top.getAsDict(PdfName.DR);if (dr == null) {dr = new PdfDictionary();top.put(PdfName.DR, dr);}markUsed(dr);PdfDictionary fontsTop = dr.getAsDict(PdfName.FONT);if (fontsTop == null) {fontsTop = new PdfDictionary();dr.put(PdfName.FONT, fontsTop);}markUsed(fontsTop);PdfIndirectReference frefTop = (PdfIndirectReference)fontsTop.get(psn);if (frefTop != null) {if (fref == null)fonts.put(psn, frefTop);}else if (fref == null) {FontDetails fd;if (bf.getFontType() == BaseFont.FONT_TYPE_DOCUMENT) {fd = new FontDetails(null, ((DocumentFont)bf).getIndirectReference(), bf);}else {bf.setSubset(false);fd = writer.addSimple(bf);localFonts.put(psn.toString().substring(1), bf);}fontsTop.put(psn, fd.getIndirectReference());fonts.put(psn, fd.getIndirectReference());}ByteBuffer buf = cb.getInternalBuffer();buf.append(psn.getBytes()).append(' ').append(((Float)dao[DA_SIZE]).floatValue()).append(" Tf ");if (dao[DA_COLOR] != null)cb.setColorFill((BaseColor)dao[DA_COLOR]);PdfString s = new PdfString(cb.toString());item.getMerged(k).put(PdfName.DA, s);item.getWidget(k).put(PdfName.DA, s);markUsed(item.getWidget(k));}}}}}else if (name.equalsIgnoreCase("textcolor")) {for (int k = 0; k < item.size(); ++k) {if (hit.isHit(k)) {merged = item.getMerged( k );da = merged.getAsString(PdfName.DA);if (da != null) {Object dao[] = splitDAelements(da.toUnicodeString());PdfAppearance cb = new PdfAppearance();if (dao[DA_FONT] != null) {ByteBuffer buf = cb.getInternalBuffer();buf.append(new PdfName((String)dao[DA_FONT]).getBytes()).append(' ').append(((Float)dao[DA_SIZE]).floatValue()).append(" Tf ");cb.setColorFill((BaseColor)value);PdfString s = new PdfString(cb.toString());item.getMerged(k).put(PdfName.DA, s);item.getWidget(k).put(PdfName.DA, s);markUsed(item.getWidget(k));}}}}}else if (name.equalsIgnoreCase("textsize")) {for (int k = 0; k < item.size(); ++k) {if (hit.isHit(k)) {merged = item.getMerged( k );da = merged.getAsString(PdfName.DA);if (da != null) {Object dao[] = splitDAelements(da.toUnicodeString());PdfAppearance cb = new PdfAppearance();if (dao[DA_FONT] != null) {ByteBuffer buf = cb.getInternalBuffer();buf.append(new PdfName((String)dao[DA_FONT]).getBytes()).append(' ').append(((Float)value).floatValue()).append(" Tf ");if (dao[DA_COLOR] != null)cb.setColorFill((BaseColor)dao[DA_COLOR]);PdfString s = new PdfString(cb.toString());item.getMerged(k).put(PdfName.DA, s);item.getWidget(k).put(PdfName.DA, s);markUsed(item.getWidget(k));}}}}}else if (name.equalsIgnoreCase("bgcolor") || name.equalsIgnoreCase("bordercolor")) {PdfName dname = name.equalsIgnoreCase("bgcolor") ? PdfName.BG : PdfName.BC;for (int k = 0; k < item.size(); ++k) {if (hit.isHit(k)) {merged = item.getMerged( k );PdfDictionary mk = merged.getAsDict(PdfName.MK);if (mk == null) {if (value == null)return true;mk = new PdfDictionary();item.getMerged(k).put(PdfName.MK, mk);item.getWidget(k).put(PdfName.MK, mk);markUsed(item.getWidget(k));} else {markUsed( mk );}if (value == null)mk.remove(dname);elsemk.put(dname, PdfFormField.getMKColor((BaseColor)value));}}}elsereturn false;return true;}catch (Exception e) {throw new ExceptionConverter(e);}}/*** Sets a field property. Valid property names are:* <p>* <ul>* <li>flags - a set of flags specifying various characteristics of the field's widget annotation.* The value of this entry replaces that of the F entry in the form's corresponding annotation dictionary.<br>* <li>setflags - a set of flags to be set (turned on) in the F entry of the form's corresponding* widget annotation dictionary. Bits equal to 1 cause the corresponding bits in F to be set to 1.<br>* <li>clrflags - a set of flags to be cleared (turned off) in the F entry of the form's corresponding* widget annotation dictionary. Bits equal to 1 cause the corresponding* bits in F to be set to 0.<br>* <li>fflags - a set of flags specifying various characteristics of the field. The value* of this entry replaces that of the Ff entry in the form's corresponding field dictionary.<br>* <li>setfflags - a set of flags to be set (turned on) in the Ff entry of the form's corresponding* field dictionary. Bits equal to 1 cause the corresponding bits in Ff to be set to 1.<br>* <li>clrfflags - a set of flags to be cleared (turned off) in the Ff entry of the form's corresponding* field dictionary. Bits equal to 1 cause the corresponding bits in Ff* to be set to 0.<br>* </ul>** @param field the field name* @param name the property name* @param value the property value* @param inst an array of <CODE>int</CODE> indexing into <CODE>AcroField.Item.merged</CODE> elements to process.* Set to <CODE>null</CODE> to process all* @return <CODE>true</CODE> if the property exists, <CODE>false</CODE> otherwise*/public boolean setFieldProperty(String field, String name, int value, int inst[]) {if (writer == null)throw new RuntimeException(MessageLocalization.getComposedMessage("this.acrofields.instance.is.read.only"));Item item = fields.get(field);if (item == null)return false;InstHit hit = new InstHit(inst);if (name.equalsIgnoreCase("flags")) {PdfNumber num = new PdfNumber(value);for (int k = 0; k < item.size(); ++k) {if (hit.isHit(k)) {item.getMerged(k).put(PdfName.F, num);item.getWidget(k).put(PdfName.F, num);markUsed(item.getWidget(k));}}}else if (name.equalsIgnoreCase("setflags")) {for (int k = 0; k < item.size(); ++k) {if (hit.isHit(k)) {PdfNumber num = item.getWidget(k).getAsNumber(PdfName.F);int val = 0;if (num != null)val = num.intValue();num = new PdfNumber(val | value);item.getMerged(k).put(PdfName.F, num);item.getWidget(k).put(PdfName.F, num);markUsed(item.getWidget(k));}}}else if (name.equalsIgnoreCase("clrflags")) {for (int k = 0; k < item.size(); ++k) {if (hit.isHit(k)) {PdfDictionary widget = item.getWidget( k );PdfNumber num = widget.getAsNumber(PdfName.F);int val = 0;if (num != null)val = num.intValue();num = new PdfNumber(val & ~value);item.getMerged(k).put(PdfName.F, num);widget.put(PdfName.F, num);markUsed(widget);}}}else if (name.equalsIgnoreCase("fflags")) {PdfNumber num = new PdfNumber(value);for (int k = 0; k < item.size(); ++k) {if (hit.isHit(k)) {item.getMerged(k).put(PdfName.FF, num);item.getValue(k).put(PdfName.FF, num);markUsed(item.getValue(k));}}}else if (name.equalsIgnoreCase("setfflags")) {for (int k = 0; k < item.size(); ++k) {if (hit.isHit(k)) {PdfDictionary valDict = item.getValue( k );PdfNumber num = valDict.getAsNumber( PdfName.FF );int val = 0;if (num != null)val = num.intValue();num = new PdfNumber(val | value);item.getMerged(k).put(PdfName.FF, num);valDict.put(PdfName.FF, num);markUsed(valDict);}}}else if (name.equalsIgnoreCase("clrfflags")) {for (int k = 0; k < item.size(); ++k) {if (hit.isHit(k)) {PdfDictionary valDict = item.getValue( k );PdfNumber num = valDict.getAsNumber(PdfName.FF);int val = 0;if (num != null)val = num.intValue();num = new PdfNumber(val & ~value);item.getMerged(k).put(PdfName.FF, num);valDict.put(PdfName.FF, num);markUsed(valDict);}}}elsereturn false;return true;}/*** Merges an XML data structure into this form.** @param n the top node of the data structure* @throws java.io.IOException on error* @throws com.itextpdf.text.DocumentException o error*/public void mergeXfaData(Node n) throws IOException, DocumentException {XfaForm.Xml2SomDatasets data = new XfaForm.Xml2SomDatasets(n);for (String string : data.getOrder()) {String name = string;String text = XfaForm.getNodeText(data.getName2Node().get(name));setField(name, text);}}/*** Sets the fields by FDF merging.** @param fdf the FDF form* @throws IOException on error* @throws DocumentException on error*/public void setFields(FdfReader fdf) throws IOException, DocumentException {HashMap<String, PdfDictionary> fd = fdf.getFields();for (String f: fd.keySet()) {String v = fdf.getFieldValue(f);if (v != null)setField(f, v);}}/*** Sets the fields by XFDF merging.** @param xfdf the XFDF form* @throws IOException on error* @throws DocumentException on error*/public void setFields(XfdfReader xfdf) throws IOException, DocumentException {HashMap<String, String> fd = xfdf.getFields();for (String f: fd.keySet()) {String v = xfdf.getFieldValue(f);if (v != null)setField(f, v);List<String> l = xfdf.getListValues(f);if (l != null)setListSelection(v, l.toArray(new String[l.size()]));}}/*** Regenerates the field appearance.* This is useful when you change a field property, but not its value,* for instance form.setFieldProperty("f", "bgcolor", BaseColor.BLUE, null);* This won't have any effect, unless you use regenerateField("f") after changing* the property.** @param name the fully qualified field name or the partial name in the case of XFA forms* @throws IOException on error* @throws DocumentException on error* @return <CODE>true</CODE> if the field was found and changed,* <CODE>false</CODE> otherwise*/public boolean regenerateField(String name) throws IOException, DocumentException {String value = getField(name);return setField(name, value, value);}/*** Sets the field value.** @param name the fully qualified field name or the partial name in the case of XFA forms* @param value the field value* @throws IOException on error* @throws DocumentException on error* @return <CODE>true</CODE> if the field was found and changed,* <CODE>false</CODE> otherwise*/public boolean setField(String name, String value) throws IOException, DocumentException {return setField(name, value, null);}/*** Sets the field value and the display string. The display string* is used to build the appearance in the cases where the value* is modified by Acrobat with JavaScript and the algorithm is* known.** @param name the fully qualified field name or the partial name in the case of XFA forms* @param value the field value* @param display the string that is used for the appearance. If <CODE>null</CODE>* the <CODE>value</CODE> parameter will be used* @return <CODE>true</CODE> if the field was found and changed,* <CODE>false</CODE> otherwise* @throws IOException on error* @throws DocumentException on error* */public boolean setField(String name, String value, String display) throws IOException, DocumentException {if (writer == null)throw new DocumentException(MessageLocalization.getComposedMessage("this.acrofields.instance.is.read.only"));if (xfa.isXfaPresent()) {name = xfa.findFieldName(name, this);if (name == null)return false;String shortName = XfaForm.Xml2Som.getShortName(name);Node xn = xfa.findDatasetsNode(shortName);if (xn == null) {xn = xfa.getDatasetsSom().insertNode(xfa.getDatasetsNode(), shortName);}xfa.setNodeText(xn, value);}Item item = fields.get(name);if (item == null)return false;PdfDictionary merged = item.getMerged( 0 );PdfName type = merged.getAsName(PdfName.FT);if (PdfName.TX.equals(type)) {PdfNumber maxLen = merged.getAsNumber(PdfName.MAXLEN);int len = 0;if (maxLen != null)len = maxLen.intValue();if (len > 0)value = value.substring(0, Math.min(len, value.length()));}if (display == null)display = value;if (PdfName.TX.equals(type) || PdfName.CH.equals(type)) {PdfString v = new PdfString(value, PdfObject.TEXT_UNICODE);for (int idx = 0; idx < item.size(); ++idx) {PdfDictionary valueDic = item.getValue(idx);valueDic.put(PdfName.V, v);valueDic.remove(PdfName.I);markUsed(valueDic);merged = item.getMerged(idx);merged.remove(PdfName.I);merged.put(PdfName.V, v);PdfDictionary widget = item.getWidget(idx);if (generateAppearances) {PdfAppearance app = getAppearance(merged, display, name);if (PdfName.CH.equals(type)) {PdfNumber n = new PdfNumber(topFirst);widget.put(PdfName.TI, n);merged.put(PdfName.TI, n);}PdfDictionary appDic = widget.getAsDict(PdfName.AP);if (appDic == null) {appDic = new PdfDictionary();widget.put(PdfName.AP, appDic);merged.put(PdfName.AP, appDic);}appDic.put(PdfName.N, app.getIndirectReference());writer.releaseTemplate(app);}else {widget.remove(PdfName.AP);merged.remove(PdfName.AP);}markUsed(widget);}return true;}else if (PdfName.BTN.equals(type)) {PdfNumber ff = item.getMerged(0).getAsNumber(PdfName.FF);int flags = 0;if (ff != null)flags = ff.intValue();if ((flags & PdfFormField.FF_PUSHBUTTON) != 0) {//we'll assume that the value is an image in base64Image img;try {img = Image.getInstance(Base64.decode(value));}catch (Exception e) {return false;}PushbuttonField pb = getNewPushbuttonFromField(name);pb.setImage(img);replacePushbuttonField(name, pb.getField());return true;}PdfName v = new PdfName(value);ArrayList<String> lopt = new ArrayList<String>();PdfArray opts = item.getValue(0).getAsArray(PdfName.OPT);if (opts != null) {for (int k = 0; k < opts.size(); ++k) {PdfString valStr = opts.getAsString(k);if (valStr != null)lopt.add(valStr.toUnicodeString());elselopt.add(null);}}int vidx = lopt.indexOf(value);PdfName vt;if (vidx >= 0)vt = new PdfName(String.valueOf(vidx));elsevt = v;for (int idx = 0; idx < item.size(); ++idx) {merged = item.getMerged(idx);PdfDictionary widget = item.getWidget(idx);PdfDictionary valDict = item.getValue(idx);markUsed(item.getValue(idx));valDict.put(PdfName.V, vt);merged.put(PdfName.V, vt);markUsed(widget);if (isInAP(widget, vt)) {merged.put(PdfName.AS, vt);widget.put(PdfName.AS, vt);}else {merged.put(PdfName.AS, PdfName.Off);widget.put(PdfName.AS, PdfName.Off);}}return true;}return false;}/*** Sets different values in a list selection.* No appearance is generated yet; nor does the code check if multiple select is allowed.** @param name the name of the field* @param value an array with values that need to be selected* @return true only if the field value was changed* @since 2.1.4*/public boolean setListSelection(String name, String[] value) throws IOException, DocumentException {Item item = getFieldItem(name);if (item == null)return false;PdfDictionary merged = item.getMerged( 0 );PdfName type = merged.getAsName(PdfName.FT);if (!PdfName.CH.equals(type)) {return false;}String[] options = getListOptionExport(name);PdfArray array = new PdfArray();for (String element : value) {for (int j = 0; j < options.length; j++) {if (options[j].equals(element)) {array.add(new PdfNumber(j));break;}}}item.writeToAll(PdfName.I, array, Item.WRITE_MERGED | Item.WRITE_VALUE);PdfArray vals = new PdfArray();for (int i = 0; i < value.length; ++i) {vals.add( new PdfString( value[i] ) );}item.writeToAll(PdfName.V, vals, Item.WRITE_MERGED | Item.WRITE_VALUE);PdfAppearance app = getAppearance( merged, value, name );PdfDictionary apDic = new PdfDictionary();apDic.put( PdfName.N, app.getIndirectReference() );item.writeToAll(PdfName.AP, apDic, Item.WRITE_MERGED | Item.WRITE_WIDGET);writer.releaseTemplate( app );item.markUsed( this, Item.WRITE_VALUE | Item.WRITE_WIDGET );return true;}boolean isInAP(PdfDictionary dic, PdfName check) {PdfDictionary appDic = dic.getAsDict(PdfName.AP);if (appDic == null)return false;PdfDictionary NDic = appDic.getAsDict(PdfName.N);return NDic != null && NDic.get(check) != null;}/*** Gets all the fields. The fields are keyed by the fully qualified field name and* the value is an instance of <CODE>AcroFields.Item</CODE>.** @return all the fields*/public Map<String, Item> getFields() {return fields;}/*** Gets the field structure.** @param name the name of the field* @return the field structure or <CODE>null</CODE> if the field* does not exist*/public Item getFieldItem(String name) {if (xfa.isXfaPresent()) {name = xfa.findFieldName(name, this);if (name == null)return null;}return fields.get(name);}/*** Gets the long XFA translated name.** @param name the name of the field* @return the long field name*/public String getTranslatedFieldName(String name) {if (xfa.isXfaPresent()) {String namex = xfa.findFieldName(name, this);if (namex != null)name = namex;}return name;}/*** Gets the field box positions in the document. The return is an array of <CODE>float</CODE>* multiple of 5. For each of this groups the values are: [page, llx, lly, urx,* ury]. The coordinates have the page rotation in consideration.** @param name the field name* @return the positions or <CODE>null</CODE> if field does not exist*/public List<FieldPosition> getFieldPositions(String name) {Item item = getFieldItem(name);if (item == null)return null;ArrayList<FieldPosition> ret = new ArrayList<FieldPosition>();for (int k = 0; k < item.size(); ++k) {try {PdfDictionary wd = item.getWidget(k);PdfArray rect = wd.getAsArray(PdfName.RECT);if (rect == null)continue;Rectangle r = PdfReader.getNormalizedRectangle(rect);int page = item.getPage(k).intValue();int rotation = reader.getPageRotation(page);FieldPosition fp = new FieldPosition();fp.page = page;if (rotation != 0) {Rectangle pageSize = reader.getPageSize(page);switch (rotation) {case 270:r = new Rectangle(pageSize.getTop() - r.getBottom(),r.getLeft(),pageSize.getTop() - r.getTop(),r.getRight());break;case 180:r = new Rectangle(pageSize.getRight() - r.getLeft(),pageSize.getTop() - r.getBottom(),pageSize.getRight() - r.getRight(),pageSize.getTop() - r.getTop());break;case 90:r = new Rectangle(r.getBottom(),pageSize.getRight() - r.getLeft(),r.getTop(),pageSize.getRight() - r.getRight());break;}r.normalize();}fp.position = r;ret.add(fp);}catch (Exception e) {// empty on purpose}}return ret;}private int removeRefFromArray(PdfArray array, PdfObject refo) {if (refo == null || !refo.isIndirect())return array.size();PdfIndirectReference ref = (PdfIndirectReference)refo;for (int j = 0; j < array.size(); ++j) {PdfObject obj = array.getPdfObject(j);if (!obj.isIndirect())continue;if (((PdfIndirectReference)obj).getNumber() == ref.getNumber())array.remove(j--);}return array.size();}/*** Removes all the fields from <CODE>page</CODE>.** @param page the page to remove the fields from* @return <CODE>true</CODE> if any field was removed, <CODE>false otherwise</CODE>*/public boolean removeFieldsFromPage(int page) {if (page < 1)return false;String names[] = new String[fields.size()];fields.keySet().toArray(names);boolean found = false;for (int k = 0; k < names.length; ++k) {boolean fr = removeField(names[k], page);found = found || fr;}return found;}/*** Removes a field from the document. If page equals -1 all the fields with this* <CODE>name</CODE> are removed from the document otherwise only the fields in* that particular page are removed.** @param name the field name* @param page the page to remove the field from or -1 to remove it from all the pages* @return <CODE>true</CODE> if the field exists, <CODE>false otherwise</CODE>*/public boolean removeField(String name, int page) {Item item = getFieldItem(name);if (item == null)return false;PdfDictionary acroForm = (PdfDictionary)PdfReader.getPdfObject(reader.getCatalog().get(PdfName.ACROFORM), reader.getCatalog());if (acroForm == null)return false;PdfArray arrayf = acroForm.getAsArray(PdfName.FIELDS);if (arrayf == null)return false;for (int k = 0; k < item.size(); ++k) {int pageV = item.getPage(k).intValue();if (page != -1 && page != pageV)continue;PdfIndirectReference ref = item.getWidgetRef(k);PdfDictionary wd = item.getWidget( k );PdfDictionary pageDic = reader.getPageN(pageV);PdfArray annots = pageDic.getAsArray(PdfName.ANNOTS);if (annots != null) {if (removeRefFromArray(annots, ref) == 0) {pageDic.remove(PdfName.ANNOTS);markUsed(pageDic);}elsemarkUsed(annots);}PdfReader.killIndirect(ref);PdfIndirectReference kid = ref;while ((ref = wd.getAsIndirectObject(PdfName.PARENT)) != null) {wd = wd.getAsDict( PdfName.PARENT );PdfArray kids = wd.getAsArray(PdfName.KIDS);if (removeRefFromArray(kids, kid) != 0)break;kid = ref;PdfReader.killIndirect(ref);}if (ref == null) {removeRefFromArray(arrayf, kid);markUsed(arrayf);}if (page != -1) {item.remove( k );--k;}}if (page == -1 || item.size() == 0)fields.remove(name);return true;}/*** Removes a field from the document.** @param name the field name* @return <CODE>true</CODE> if the field exists, <CODE>false otherwise</CODE>*/public boolean removeField(String name) {return removeField(name, -1);}/*** Gets the property generateAppearances.** @return the property generateAppearances*/public boolean isGenerateAppearances() {return generateAppearances;}/*** Sets the option to generate appearances. Not generating appearances* will speed-up form filling but the results can be* unexpected in Acrobat. Don't use it unless your environment is well* controlled. The default is <CODE>true</CODE>.** @param generateAppearances the option to generate appearances*/public void setGenerateAppearances(boolean generateAppearances) {this.generateAppearances = generateAppearances;PdfDictionary top = reader.getCatalog().getAsDict(PdfName.ACROFORM);if (generateAppearances)top.remove(PdfName.NEEDAPPEARANCES);elsetop.put(PdfName.NEEDAPPEARANCES, PdfBoolean.PDFTRUE);}/** The field representations for retrieval and modification. */public static class Item {/*** <CODE>writeToAll</CODE> constant.** @since 2.1.5*/public static final int WRITE_MERGED = 1;/*** <CODE>writeToAll</CODE> and <CODE>markUsed</CODE> constant.** @since 2.1.5*/public static final int WRITE_WIDGET = 2;/*** <CODE>writeToAll</CODE> and <CODE>markUsed</CODE> constant.** @since 2.1.5*/public static final int WRITE_VALUE = 4;/*** This function writes the given key/value pair to all the instances* of merged, widget, and/or value, depending on the <code>writeFlags</code> setting** @since 2.1.5** @param key you'll never guess what this is for.* @param value if value is null, the key will be removed* @param writeFlags ORed together WRITE_* flags*/public void writeToAll(PdfName key, PdfObject value, int writeFlags) {int i;PdfDictionary curDict = null;if ((writeFlags & WRITE_MERGED) != 0) {for (i = 0; i < merged.size(); ++i) {curDict = getMerged(i);curDict.put(key, value);}}if ((writeFlags & WRITE_WIDGET) != 0) {for (i = 0; i < widgets.size(); ++i) {curDict = getWidget(i);curDict.put(key, value);}}if ((writeFlags & WRITE_VALUE) != 0) {for (i = 0; i < values.size(); ++i) {curDict = getValue(i);curDict.put(key, value);}}}/*** Mark all the item dictionaries used matching the given flags** @since 2.1.5* @param writeFlags WRITE_MERGED is ignored*/public void markUsed( AcroFields parentFields, int writeFlags ) {if ((writeFlags & WRITE_VALUE) != 0) {for (int i = 0; i < size(); ++i) {parentFields.markUsed( getValue( i ) );}}if ((writeFlags & WRITE_WIDGET) != 0) {for (int i = 0; i < size(); ++i) {parentFields.markUsed(getWidget(i));}}}/*** An array of <CODE>PdfDictionary</CODE> where the value tag /V* is present.** @since 5.0.2 public is now protected*/protected ArrayList<PdfDictionary> values = new ArrayList<PdfDictionary>();/*** An array of <CODE>PdfDictionary</CODE> with the widgets.** @since 5.0.2 public is now protected*/protected ArrayList<PdfDictionary> widgets = new ArrayList<PdfDictionary>();/*** An array of <CODE>PdfDictionary</CODE> with the widget references.** @since 5.0.2 public is now protected*/protected ArrayList<PdfIndirectReference> widget_refs = new ArrayList<PdfIndirectReference>();/*** An array of <CODE>PdfDictionary</CODE> with all the field* and widget tags merged.** @since 5.0.2 public is now protected*/protected ArrayList<PdfDictionary> merged = new ArrayList<PdfDictionary>();/*** An array of <CODE>Integer</CODE> with the page numbers where* the widgets are displayed.** @since 5.0.2 public is now protected*/protected ArrayList<Integer> page = new ArrayList<Integer>();/*** An array of <CODE>Integer</CODE> with the tab order of the field in the page.** @since 5.0.2 public is now protected*/protected ArrayList<Integer> tabOrder = new ArrayList<Integer>();/*** Preferred method of determining the number of instances* of a given field.** @since 2.1.5* @return number of instances*/public int size() {return values.size();}/*** Remove the given instance from this item. It is possible to* remove all instances using this function.** @since 2.1.5* @param killIdx*/void remove(int killIdx) {values.remove(killIdx);widgets.remove(killIdx);widget_refs.remove(killIdx);merged.remove(killIdx);page.remove(killIdx);tabOrder.remove(killIdx);}/*** Retrieve the value dictionary of the given instance** @since 2.1.5* @param idx instance index* @return dictionary storing this instance's value. It may be shared across instances.*/public PdfDictionary getValue(int idx) {return values.get(idx);}/*** Add a value dict to this Item** @since 2.1.5* @param value new value dictionary*/void addValue(PdfDictionary value) {values.add(value);}/*** Retrieve the widget dictionary of the given instance** @since 2.1.5* @param idx instance index* @return The dictionary found in the appropriate page's Annot array.*/public PdfDictionary getWidget(int idx) {return widgets.get(idx);}/*** Add a widget dict to this Item** @since 2.1.5* @param widget*/void addWidget(PdfDictionary widget) {widgets.add(widget);}/*** Retrieve the reference to the given instance** @since 2.1.5* @param idx instance index* @return reference to the given field instance*/public PdfIndirectReference getWidgetRef(int idx) {return widget_refs.get(idx);}/*** Add a widget ref to this Item** @since 2.1.5* @param widgRef*/void addWidgetRef(PdfIndirectReference widgRef) {widget_refs.add(widgRef);}/*** Retrieve the merged dictionary for the given instance. The merged* dictionary contains all the keys present in parent fields, though they* may have been overwritten (or modified?) by children.* Example: a merged radio field dict will contain /V** @since 2.1.5* @param idx instance index* @return the merged dictionary for the given instance*/public PdfDictionary getMerged(int idx) {return merged.get(idx);}/*** Adds a merged dictionary to this Item.** @since 2.1.5* @param mergeDict*/void addMerged(PdfDictionary mergeDict) {merged.add(mergeDict);}/*** Retrieve the page number of the given instance** @since 2.1.5* @param idx* @return remember, pages are "1-indexed", not "0-indexed" like field instances.*/public Integer getPage(int idx) {return page.get(idx);}/*** Adds a page to the current Item.** @since 2.1.5* @param pg*/void addPage(int pg) {page.add(new Integer(pg));}/*** forces a page value into the Item.** @since 2.1.5* @param idx*/void forcePage(int idx, int pg) {page.set(idx, new Integer( pg ));}/*** Gets the tabOrder.** @since 2.1.5* @param idx* @return tab index of the given field instance*/public Integer getTabOrder(int idx) {return tabOrder.get(idx);}/*** Adds a tab order value to this Item.** @since 2.1.5* @param order*/void addTabOrder(int order) {tabOrder.add(new Integer(order));}}private static class InstHit {IntHashtable hits;public InstHit(int inst[]) {if (inst == null)return;hits = new IntHashtable();for (int k = 0; k < inst.length; ++k)hits.put(inst[k], 1);}public boolean isHit(int n) {if (hits == null)return true;return hits.containsKey(n);}}/*** Gets the field names that have signatures and are signed.** @return the field names that have signatures and are signed*/public ArrayList<String> getSignatureNames() {if (sigNames != null)return new ArrayList<String>(sigNames.keySet());sigNames = new HashMap<String, int[]>();ArrayList<Object[]> sorter = new ArrayList<Object[]>();for (Map.Entry<String, Item> entry: fields.entrySet()) {Item item = entry.getValue();PdfDictionary merged = item.getMerged(0);if (!PdfName.SIG.equals(merged.get(PdfName.FT)))continue;PdfDictionary v = merged.getAsDict(PdfName.V);if (v == null)continue;PdfString contents = v.getAsString(PdfName.CONTENTS);if (contents == null)continue;PdfArray ro = v.getAsArray(PdfName.BYTERANGE);if (ro == null)continue;int rangeSize = ro.size();if (rangeSize < 2)continue;int length = ro.getAsNumber(rangeSize - 1).intValue() + ro.getAsNumber(rangeSize - 2).intValue();sorter.add(new Object[]{entry.getKey(), new int[]{length, 0}});}Collections.sort(sorter, new AcroFields.SorterComparator());if (!sorter.isEmpty()) {if (((int[])sorter.get(sorter.size() - 1)[1])[0] == reader.getFileLength())totalRevisions = sorter.size();elsetotalRevisions = sorter.size() + 1;for (int k = 0; k < sorter.size(); ++k) {Object objs[] = sorter.get(k);String name = (String)objs[0];int p[] = (int[])objs[1];p[1] = k + 1;sigNames.put(name, p);}}return new ArrayList<String>(sigNames.keySet());}/*** Gets the field names that have blank signatures.** @return the field names that have blank signatures*/public ArrayList<String> getBlankSignatureNames() {getSignatureNames();ArrayList<String> sigs = new ArrayList<String>();for (Map.Entry<String, Item> entry: fields.entrySet()) {Item item = entry.getValue();PdfDictionary merged = item.getMerged(0);if (!PdfName.SIG.equals(merged.getAsName(PdfName.FT)))continue;if (sigNames.containsKey(entry.getKey()))continue;sigs.add(entry.getKey());}return sigs;}/*** Gets the signature dictionary, the one keyed by /V.** @param name the field name* @return the signature dictionary keyed by /V or <CODE>null</CODE> if the field is not* a signature*/public PdfDictionary getSignatureDictionary(String name) {getSignatureNames();name = getTranslatedFieldName(name);if (!sigNames.containsKey(name))return null;Item item = fields.get(name);PdfDictionary merged = item.getMerged(0);return merged.getAsDict(PdfName.V);}/*** Checks is the signature covers the entire document or just part of it.** @param name the signature field name* @return <CODE>true</CODE> if the signature covers the entire document,* <CODE>false</CODE> otherwise*/public boolean signatureCoversWholeDocument(String name) {getSignatureNames();name = getTranslatedFieldName(name);if (!sigNames.containsKey(name))return false;return sigNames.get(name)[0] == reader.getFileLength();}/*** Verifies a signature. An example usage is:* <p>* <pre>* KeyStore kall = PdfPKCS7.loadCacertsKeyStore();* PdfReader reader = new PdfReader("my_signed_doc.pdf");* AcroFields af = reader.getAcroFields();* ArrayList names = af.getSignatureNames();* for (int k = 0; k &lt; names.size(); ++k) {* String name = (String)names.get(k);* System.out.println("Signature name: " + name);* System.out.println("Signature covers whole document: " + af.signatureCoversWholeDocument(name));* PdfPKCS7 pk = af.verifySignature(name);* Calendar cal = pk.getSignDate();* Certificate pkc[] = pk.getCertificates();* System.out.println("Subject: " + PdfPKCS7.getSubjectFields(pk.getSigningCertificate()));* System.out.println("Document modified: " + !pk.verify());* Object fails[] = PdfPKCS7.verifyCertificates(pkc, kall, null, cal);* if (fails == null)* System.out.println("Certificates verified against the KeyStore");* else* System.out.println("Certificate failed: " + fails[1]);* }* </pre>** @param name the signature field name* @return a <CODE>PdfPKCS7</CODE> class to continue the verification*/public PdfPKCS7 verifySignature(String name) {return verifySignature(name, null);}/*** Verifies a signature. An example usage is:* <p>* <pre>* KeyStore kall = PdfPKCS7.loadCacertsKeyStore();* PdfReader reader = new PdfReader("my_signed_doc.pdf");* AcroFields af = reader.getAcroFields();* ArrayList names = af.getSignatureNames();* for (int k = 0; k &lt; names.size(); ++k) {* String name = (String)names.get(k);* System.out.println("Signature name: " + name);* System.out.println("Signature covers whole document: " + af.signatureCoversWholeDocument(name));* PdfPKCS7 pk = af.verifySignature(name);* Calendar cal = pk.getSignDate();* Certificate pkc[] = pk.getCertificates();* System.out.println("Subject: " + PdfPKCS7.getSubjectFields(pk.getSigningCertificate()));* System.out.println("Document modified: " + !pk.verify());* Object fails[] = PdfPKCS7.verifyCertificates(pkc, kall, null, cal);* if (fails == null)* System.out.println("Certificates verified against the KeyStore");* else* System.out.println("Certificate failed: " + fails[1]);* }* </pre>** @param name the signature field name* @param provider the provider or <code>null</code> for the default provider* @return a <CODE>PdfPKCS7</CODE> class to continue the verification*/public PdfPKCS7 verifySignature(String name, String provider) {PdfDictionary v = getSignatureDictionary(name);if (v == null)return null;try {PdfName sub = v.getAsName(PdfName.SUBFILTER);PdfString contents = v.getAsString(PdfName.CONTENTS);PdfPKCS7 pk = null;if (sub.equals(PdfName.ADBE_X509_RSA_SHA1)) {PdfString cert = v.getAsString(PdfName.CERT);if (cert == null)cert = v.getAsArray(PdfName.CERT).getAsString(0);pk = new PdfPKCS7(contents.getOriginalBytes(), cert.getBytes(), provider);}elsepk = null;// new PdfPKCS7(contents.getOriginalBytes(), provider);updateByteRange(pk, v);PdfString str = v.getAsString(PdfName.M);if (str != null)pk.setSignDate(PdfDate.decode(str.toString()));PdfObject obj = PdfReader.getPdfObject(v.get(PdfName.NAME));if (obj != null) {if (obj.isString())pk.setSignName(((PdfString)obj).toUnicodeString());else if(obj.isName())pk.setSignName(PdfName.decodeName(obj.toString()));}str = v.getAsString(PdfName.REASON);if (str != null)pk.setReason(str.toUnicodeString());str = v.getAsString(PdfName.LOCATION);if (str != null)pk.setLocation(str.toUnicodeString());return pk;}catch (Exception e) {throw new ExceptionConverter(e);}}private void updateByteRange(PdfPKCS7 pkcs7, PdfDictionary v) {PdfArray b = v.getAsArray(PdfName.BYTERANGE);RandomAccessFileOrArray rf = reader.getSafeFile();try {rf.reOpen();byte buf[] = new byte[8192];for (int k = 0; k < b.size(); ++k) {int start = b.getAsNumber(k).intValue();int length = b.getAsNumber(++k).intValue();rf.seek(start);while (length > 0) {int rd = rf.read(buf, 0, Math.min(length, buf.length));if (rd <= 0)break;length -= rd;pkcs7.update(buf, 0, rd);}}}catch (Exception e) {throw new ExceptionConverter(e);}finally {try{rf.close();}catch(Exception e){}}}private void markUsed(PdfObject obj) {if (!append)return;((PdfStamperImp)writer).markUsed(obj);}/*** Gets the total number of revisions this document has.** @return the total number of revisions*/public int getTotalRevisions() {getSignatureNames();return this.totalRevisions;}/*** Gets this <CODE>field</CODE> revision.** @param field the signature field name* @return the revision or zero if it's not a signature field*/public int getRevision(String field) {getSignatureNames();field = getTranslatedFieldName(field);if (!sigNames.containsKey(field))return 0;return sigNames.get(field)[1];}/*** Extracts a revision from the document.** @param field the signature field name* @return an <CODE>InputStream</CODE> covering the revision. Returns <CODE>null</CODE> if* it's not a signature field* @throws IOException on error*/public InputStream extractRevision(String field) throws IOException {getSignatureNames();field = getTranslatedFieldName(field);if (!sigNames.containsKey(field))return null;int length = sigNames.get(field)[0];RandomAccessFileOrArray raf = reader.getSafeFile();raf.reOpen();raf.seek(0);return new RevisionStream(raf, length);}/*** Gets the appearances cache.** @return the appearances cache* @since 2.1.5 this method used to return a HashMap*/public Map<String, TextField> getFieldCache() {return this.fieldCache;}/*** Sets a cache for field appearances. Parsing the existing PDF to* create a new TextField is time expensive. For those tasks that repeatedly* fill the same PDF with different field values the use of the cache has dramatic* speed advantages. An example usage:* <p>* <pre>* String pdfFile = ...;// the pdf file used as template* ArrayList xfdfFiles = ...;// the xfdf file names* ArrayList pdfOutFiles = ...;// the output file names, one for each element in xpdfFiles* HashMap cache = new HashMap();// the appearances cache* PdfReader originalReader = new PdfReader(pdfFile);* for (int k = 0; k &lt; xfdfFiles.size(); ++k) {* PdfReader reader = new PdfReader(originalReader);* XfdfReader xfdf = new XfdfReader((String)xfdfFiles.get(k));* PdfStamper stp = new PdfStamper(reader, new FileOutputStream((String)pdfOutFiles.get(k)));* AcroFields af = stp.getAcroFields();* af.setFieldCache(cache);* af.setFields(xfdf);* stp.close();* }* </pre>** @param fieldCache a Map that will carry the cached appearances* @since 2.1.5 this method used to take a HashMap as parameter*/public void setFieldCache(Map<String, TextField> fieldCache) {this.fieldCache = fieldCache;}/*** Sets extra margins in text fields to better mimic the Acrobat layout.** @param extraMarginLeft the extra margin left* @param extraMarginTop the extra margin top*/public void setExtraMargin(float extraMarginLeft, float extraMarginTop) {this.extraMarginLeft = extraMarginLeft;this.extraMarginTop = extraMarginTop;}/*** Adds a substitution font to the list. The fonts in this list will be used if the original* font doesn't contain the needed glyphs.** @param font the font*/public void addSubstitutionFont(BaseFont font) {if (substitutionFonts == null)substitutionFonts = new ArrayList<BaseFont>();substitutionFonts.add(font);}private static final HashMap<String, String[]> stdFieldFontNames = new HashMap<String, String[]>();/*** Holds value of property totalRevisions.*/private int totalRevisions;/*** Holds value of property fieldCache.** @since 2.1.5 this used to be a HashMap*/private Map<String, TextField> fieldCache;static {stdFieldFontNames.put("CoBO", new String[]{"Courier-BoldOblique"});stdFieldFontNames.put("CoBo", new String[]{"Courier-Bold"});stdFieldFontNames.put("CoOb", new String[]{"Courier-Oblique"});stdFieldFontNames.put("Cour", new String[]{"Courier"});stdFieldFontNames.put("HeBO", new String[]{"Helvetica-BoldOblique"});stdFieldFontNames.put("HeBo", new String[]{"Helvetica-Bold"});stdFieldFontNames.put("HeOb", new String[]{"Helvetica-Oblique"});stdFieldFontNames.put("Helv", new String[]{"Helvetica"});stdFieldFontNames.put("Symb", new String[]{"Symbol"});stdFieldFontNames.put("TiBI", new String[]{"Times-BoldItalic"});stdFieldFontNames.put("TiBo", new String[]{"Times-Bold"});stdFieldFontNames.put("TiIt", new String[]{"Times-Italic"});stdFieldFontNames.put("TiRo", new String[]{"Times-Roman"});stdFieldFontNames.put("ZaDb", new String[]{"ZapfDingbats"});stdFieldFontNames.put("HySm", new String[]{"HYSMyeongJo-Medium", "UniKS-UCS2-H"});stdFieldFontNames.put("HyGo", new String[]{"HYGoThic-Medium", "UniKS-UCS2-H"});stdFieldFontNames.put("KaGo", new String[]{"HeiseiKakuGo-W5", "UniKS-UCS2-H"});stdFieldFontNames.put("KaMi", new String[]{"HeiseiMin-W3", "UniJIS-UCS2-H"});stdFieldFontNames.put("MHei", new String[]{"MHei-Medium", "UniCNS-UCS2-H"});stdFieldFontNames.put("MSun", new String[]{"MSung-Light", "UniCNS-UCS2-H"});stdFieldFontNames.put("STSo", new String[]{"STSong-Light", "UniGB-UCS2-H"});}private static class RevisionStream extends InputStream {private byte b[] = new byte[1];private RandomAccessFileOrArray raf;private int length;private int rangePosition = 0;private boolean closed;private RevisionStream(RandomAccessFileOrArray raf, int length) {this.raf = raf;this.length = length;}@Overridepublic int read() throws IOException {int n = read(b);if (n != 1)return -1;return b[0] & 0xff;}@Overridepublic int read(byte[] b, int off, int len) throws IOException {if (b == null) {throw new NullPointerException();} else if (off < 0 || off > b.length || len < 0 ||off + len > b.length || off + len < 0) {throw new IndexOutOfBoundsException();} else if (len == 0) {return 0;}if (rangePosition >= length) {close();return -1;}int elen = Math.min(len, length - rangePosition);raf.readFully(b, off, elen);rangePosition += elen;return elen;}@Overridepublic void close() throws IOException {if (!closed) {raf.close();closed = true;}}}private static class SorterComparator implements Comparator<Object[]> {public int compare(Object[] o1, Object[] o2) {int n1 = ((int[])o1[1])[0];int n2 = ((int[])o2[1])[0];return n1 - n2;}}/*** Gets the list of substitution fonts. The list is composed of <CODE>BaseFont</CODE> and can be <CODE>null</CODE>. The fonts in this list will be used if the original* font doesn't contain the needed glyphs.** @return the list*/public ArrayList<BaseFont> getSubstitutionFonts() {return substitutionFonts;}/*** Sets a list of substitution fonts. The list is composed of <CODE>BaseFont</CODE> and can also be <CODE>null</CODE>. The fonts in this list will be used if the original* font doesn't contain the needed glyphs.** @param substitutionFonts the list*/public void setSubstitutionFonts(ArrayList<BaseFont> substitutionFonts) {this.substitutionFonts = substitutionFonts;}/*** Gets the XFA form processor.** @return the XFA form processor*/public XfaForm getXfa() {return xfa;}/*** Removes the XFA stream from the document.*/public void removeXfa() {PdfDictionary root = reader.getCatalog();PdfDictionary acroform = root.getAsDict(PdfName.ACROFORM);acroform.remove(PdfName.XFA);try {xfa = new XfaForm(reader);}catch(Exception e) {throw new ExceptionConverter(e);}}private static final PdfName[] buttonRemove = {PdfName.MK, PdfName.F , PdfName.FF , PdfName.Q , PdfName.BS , PdfName.BORDER};/*** Creates a new pushbutton from an existing field. If there are several pushbuttons with the same name* only the first one is used. This pushbutton can be changed and be used to replace* an existing one, with the same name or other name, as long is it is in the same document. To replace an existing pushbutton* call {@link #replacePushbuttonField(String,PdfFormField)}.** @param field the field name that should be a pushbutton* @return a new pushbutton or <CODE>null</CODE> if the field is not a pushbutton*/public PushbuttonField getNewPushbuttonFromField(String field) {return getNewPushbuttonFromField(field, 0);}/*** Creates a new pushbutton from an existing field. This pushbutton can be changed and be used to replace* an existing one, with the same name or other name, as long is it is in the same document. To replace an existing pushbutton* call {@link #replacePushbuttonField(String,PdfFormField,int)}.** @param field the field name that should be a pushbutton* @param order the field order in fields with same name* @return a new pushbutton or <CODE>null</CODE> if the field is not a pushbutton** @since 2.0.7*/public PushbuttonField getNewPushbuttonFromField(String field, int order) {try {if (getFieldType(field) != FIELD_TYPE_PUSHBUTTON)return null;Item item = getFieldItem(field);if (order >= item.size())return null;List<FieldPosition> pos = getFieldPositions(field);Rectangle box = pos.get(order).position;PushbuttonField newButton = new PushbuttonField(writer, box, null);PdfDictionary dic = item.getMerged(order);decodeGenericDictionary(dic, newButton);PdfDictionary mk = dic.getAsDict(PdfName.MK);if (mk != null) {PdfString text = mk.getAsString(PdfName.CA);if (text != null)newButton.setText(text.toUnicodeString());PdfNumber tp = mk.getAsNumber(PdfName.TP);if (tp != null)newButton.setLayout(tp.intValue() + 1);PdfDictionary ifit = mk.getAsDict(PdfName.IF);if (ifit != null) {PdfName sw = ifit.getAsName(PdfName.SW);if (sw != null) {int scale = PushbuttonField.SCALE_ICON_ALWAYS;if (sw.equals(PdfName.B))scale = PushbuttonField.SCALE_ICON_IS_TOO_BIG;else if (sw.equals(PdfName.S))scale = PushbuttonField.SCALE_ICON_IS_TOO_SMALL;else if (sw.equals(PdfName.N))scale = PushbuttonField.SCALE_ICON_NEVER;newButton.setScaleIcon(scale);}sw = ifit.getAsName(PdfName.S);if (sw != null) {if (sw.equals(PdfName.A))newButton.setProportionalIcon(false);}PdfArray aj = ifit.getAsArray(PdfName.A);if (aj != null && aj.size() == 2) {float left = aj.getAsNumber(0).floatValue();float bottom = aj.getAsNumber(1).floatValue();newButton.setIconHorizontalAdjustment(left);newButton.setIconVerticalAdjustment(bottom);}PdfBoolean fb = ifit.getAsBoolean(PdfName.FB);if (fb != null && fb.booleanValue())newButton.setIconFitToBounds(true);}PdfObject i = mk.get(PdfName.I);if (i != null && i.isIndirect())newButton.setIconReference((PRIndirectReference)i);}return newButton;}catch (Exception e) {throw new ExceptionConverter(e);}}/*** Replaces the first field with a new pushbutton. The pushbutton can be created with* {@link #getNewPushbuttonFromField(String)} from the same document or it can be a* generic PdfFormField of the type pushbutton.** @param field the field name* @param button the <CODE>PdfFormField</CODE> representing the pushbutton* @return <CODE>true</CODE> if the field was replaced, <CODE>false</CODE> if the field* was not a pushbutton*/public boolean replacePushbuttonField(String field, PdfFormField button) {return replacePushbuttonField(field, button, 0);}/*** Replaces the designated field with a new pushbutton. The pushbutton can be created with* {@link #getNewPushbuttonFromField(String,int)} from the same document or it can be a* generic PdfFormField of the type pushbutton.** @param field the field name* @param button the <CODE>PdfFormField</CODE> representing the pushbutton* @param order the field order in fields with same name* @return <CODE>true</CODE> if the field was replaced, <CODE>false</CODE> if the field* was not a pushbutton** @since 2.0.7*/public boolean replacePushbuttonField(String field, PdfFormField button, int order) {if (getFieldType(field) != FIELD_TYPE_PUSHBUTTON)return false;Item item = getFieldItem(field);if (order >= item.size())return false;PdfDictionary merged = item.getMerged(order);PdfDictionary values = item.getValue(order);PdfDictionary widgets = item.getWidget(order);for (int k = 0; k < buttonRemove.length; ++k) {merged.remove(buttonRemove[k]);values.remove(buttonRemove[k]);widgets.remove(buttonRemove[k]);}for (Object element : button.getKeys()) {PdfName key = (PdfName)element;if (key.equals(PdfName.T) || key.equals(PdfName.RECT))continue;if (key.equals(PdfName.FF))values.put(key, button.get(key));elsewidgets.put(key, button.get(key));merged.put(key, button.get(key));}return true;}/*** A class representing a field position* @since 5.0.2*/public static class FieldPosition {public int page;public Rectangle position;} }復制代碼

使用場景如下：用Adobe Acrobat來編輯PDF文件

轉載于:https://juejin.im/post/5bdfc000518825170e4a90e4

總結

以上是生活随笔為你收集整理的对于读取PDF模板表单，中文无序问题的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。