Java調用示例代碼
更新日期：2016-02-06訪問次數：53432
主要步驟
填充公共參數
填充業務參數
計算請求簽名
發起API調用
獲取API結果
示例代碼
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Reader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.security.GeneralSecurityException;
import java.security.MessageDigest;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.zip.GZIPInputStream;

import javax.crypto.Mac;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

public class ApiTest {

private static final String SIGN_METHOD_MD5 = "md5"; private static final String SIGN_METHOD_HMAC = "hmac"; private static final String CHARSET_UTF8 = "utf-8"; private static final String CONTENT_ENCODING_GZIP = "gzip";// TOP服務地址，正式環境需要設置為http://gw.api.taobao.com/router/rest private static final String serverUrl = "http://gw.api.tbsandbox.com/router/rest"; private static final String appKey = "test"; // 可替換為您的沙箱環境應用的appKey private static final String appSecret = "test"; // 可替換為您的沙箱環境應用的appSecret private static final String sessionKey = "test"; // 必須替換為沙箱賬號授權得到的真實有效sessionKeypublic static void main(String[] args) throws Exception {System.out.println(getSellerItem()); }private static String getSellerItem() throws IOException {Map<String, String> params = new HashMap<String, String>();// 公共參數params.put("method", "taobao.item.seller.get");params.put("app_key", appKey);params.put("session", sessionKey);DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");params.put("timestamp", df.format(new Date()));params.put("format", "json");params.put("v", "2.0");params.put("sign_method", "hmac");// 業務參數params.put("fields", "num_iid,title,nick,price,num");params.put("num_iid", "123456789");// 簽名參數params.put("sign", signTopRequest(params, appSecret, SIGN_METHOD_HMAC));// 請用APIreturn callApi(new URL(serverUrl), params); }/*** 對TOP請求進行簽名。*/ private static String signTopRequest(Map<String, String> params, String secret, String signMethod) throws IOException {// 第一步：檢查參數是否已經排序String[] keys = params.keySet().toArray(new String[0]);Arrays.sort(keys);// 第二步：把所有參數名和參數值串在一起StringBuilder query = new StringBuilder();if (SIGN_METHOD_MD5.equals(signMethod)) {query.append(secret);}for (String key : keys) {String value = params.get(key);if (isNotEmpty(key) && isNotEmpty(value)) {query.append(key).append(value);}}// 第三步：使用MD5/HMAC加密byte[] bytes;if (SIGN_METHOD_HMAC.equals(signMethod)) {bytes = encryptHMAC(query.toString(), secret);} else {query.append(secret);bytes = encryptMD5(query.toString());}// 第四步：把二進制轉化為大寫的十六進制return byte2hex(bytes); }/*** 對字節流進行HMAC_MD5摘要。*/ private static byte[] encryptHMAC(String data, String secret) throws IOException {byte[] bytes = null;try {SecretKey secretKey = new SecretKeySpec(secret.getBytes(CHARSET_UTF8), "HmacMD5");Mac mac = Mac.getInstance(secretKey.getAlgorithm());mac.init(secretKey);bytes = mac.doFinal(data.getBytes(CHARSET_UTF8));} catch (GeneralSecurityException gse) {throw new IOException(gse.toString());}return bytes; }/*** 對字符串采用UTF-8編碼后，用MD5進行摘要。*/ private static byte[] encryptMD5(String data) throws IOException {return encryptMD5(data.getBytes(CHARSET_UTF8)); }/*** 對字節流進行MD5摘要。*/ private static byte[] encryptMD5(byte[] data) throws IOException {byte[] bytes = null;try {MessageDigest md = MessageDigest.getInstance("MD5");bytes = md.digest(data);} catch (GeneralSecurityException gse) {throw new IOException(gse.toString());}return bytes; }/*** 把字節流轉換為十六進制表示方式。*/ private static String byte2hex(byte[] bytes) {StringBuilder sign = new StringBuilder();for (int i = 0; i < bytes.length; i++) {String hex = Integer.toHexString(bytes[i] & 0xFF);if (hex.length() == 1) {sign.append("0");}sign.append(hex.toUpperCase());}return sign.toString(); }private static String callApi(URL url, Map<String, String> params) throws IOException {String query = buildQuery(params, CHARSET_UTF8);byte[] content = {};if (query != null) {content = query.getBytes(CHARSET_UTF8);}HttpURLConnection conn = null;OutputStream out = null;String rsp = null;try {conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("POST");conn.setDoInput(true);conn.setDoOutput(true);conn.setRequestProperty("Host", url.getHost());conn.setRequestProperty("Accept", "text/xml,text/javascript");conn.setRequestProperty("User-Agent", "top-sdk-java");conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=" + CHARSET_UTF8);out = conn.getOutputStream();out.write(content);rsp = getResponseAsString(conn);} finally {if (out != null) {out.close();}if (conn != null) {conn.disconnect();}}return rsp; }private static String buildQuery(Map<String, String> params, String charset) throws IOException {if (params == null || params.isEmpty()) {return null;}StringBuilder query = new StringBuilder();Set<Entry<String, String>> entries = params.entrySet();boolean hasParam = false;for (Entry<String, String> entry : entries) {String name = entry.getKey();String value = entry.getValue();// 忽略參數名或參數值為空的參數if (isNotEmpty(name) && isNotEmpty(value)) {if (hasParam) {query.append("&");} else {hasParam = true;}query.append(name).append("=").append(URLEncoder.encode(value, charset));}}return query.toString(); }private static String getResponseAsString(HttpURLConnection conn) throws IOException {String charset = getResponseCharset(conn.getContentType());if (conn.getResponseCode() < 400) {String contentEncoding = conn.getContentEncoding();if (CONTENT_ENCODING_GZIP.equalsIgnoreCase(contentEncoding)) {return getStreamAsString(new GZIPInputStream(conn.getInputStream()), charset);} else {return getStreamAsString(conn.getInputStream(), charset);}} else {// Client Error 4xx and Server Error 5xxthrow new IOException(conn.getResponseCode() + " " + conn.getResponseMessage());} }private static String getStreamAsString(InputStream stream, String charset) throws IOException {try {Reader reader = new InputStreamReader(stream, charset);StringBuilder response = new StringBuilder();final char[] buff = new char[1024];int read = 0;while ((read = reader.read(buff)) > 0) {response.append(buff, 0, read);}return response.toString();} finally {if (stream != null) {stream.close();}} }private static String getResponseCharset(String ctype) {String charset = CHARSET_UTF8;if (isNotEmpty(ctype)) {String[] params = ctype.split(";");for (String param : params) {param = param.trim();if (param.startsWith("charset")) {String[] pair = param.split("=", 2);if (pair.length == 2) {if (isNotEmpty(pair[1])) {charset = pair[1].trim();}}break;}}}return charset; }private static boolean isNotEmpty(String value) {int strLen;if (value == null || (strLen = value.length()) == 0) {return false;}for (int i = 0; i < strLen; i++) {if ((Character.isWhitespace(value.charAt(i)) == false)) {return true;}}return false; }

}

注：該示例是在沙箱環境下調用，獲取的是沙箱中的數據。若要獲取線上環境的數據，請填寫自己創建應用獲取過來的AppKey與AppSecret，并更改調用接口的環境地址為線上地址，同時使用線上淘寶賬號獲取授權SessionKey。

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