package cn.toto.bigdata.loganalyzer.storm.utils;import java.text.NumberFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date;/*** 代碼說明** @author tuzq* @create 2017-06-25 21:03*/ public class DateUtils {/*** 根據 formatter格式返回系統日期** @param formatter* @return*/public static String getDateTime(String formatter) {SimpleDateFormat df = new SimpleDateFormat(formatter);return df.format(new Date());}public static String getDataTime(Calendar calendar) {SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");return formatter.format(calendar.getTime());}public static String before15Minute(Calendar calendar) {SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");calendar.add(Calendar.MINUTE, -15);return formatter.format(calendar.getTime());}public static String before30Minute(Calendar calendar) {SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");calendar.add(Calendar.MINUTE, -30);return formatter.format(calendar.getTime());}public static String beforeOneHour(Calendar calendar) {SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");calendar.add(Calendar.MINUTE, -60);return formatter.format(calendar.getTime());}public static String beforeOneDay(Calendar calendar) {SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");calendar.add(Calendar.DAY_OF_MONTH, -1);return formatter.format(calendar.getTime());}public static String getDateTime() {return DateUtils.getDateTime("yyyy-MM-dd HH:mm:ss");}public static String getDate() {return getDateTime("yyyy-MM-dd").replaceAll("-", "");}public static String getDate(String formatter) {return getDateTime(formatter);}public static String removeTime(String dateTime) {return dateTime.substring(0, dateTime.indexOf(" "));}/*** 獲取指定時間之前minute的時間 例如:minute = 30, 2014-07-15 12:00:00 -> 2014-07-15 11:30:00** @param time* @return*/public static String getBeforeMinute(String time, int minute) {String result = time;SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");try {Date myDate = formatter.parse(time);Calendar c = Calendar.getInstance();c.setTime(myDate);c.add(Calendar.MINUTE, -minute);myDate = c.getTime();result = formatter.format(myDate);} catch (ParseException e) {e.printStackTrace();}return result;}/*** 截取日期 yyyyMMdd** @param date* @return*/public static String splitDate(String date) {return date.substring(0, date.indexOf(" ")).replace("-", "");}/*** 替換{}中的變量** @param data* @param key* @param newData* @return*/public static String replaceParentheses(String data, String key, String newData) {return data.replaceAll("\\{" + key + "\\}", newData);}public static String replaceParentheses(String data, String key) {return data.replaceAll("\\{" + key + "\\}", "");}/*** 格式化double，不使用科學計數法** @param doubleValue* @param fractionDigits* @return*/public static String formatDouble(String doubleValue, int fractionDigits) {NumberFormat nf = NumberFormat.getInstance();nf.setGroupingUsed(false);nf.setMaximumFractionDigits(fractionDigits);return nf.format(Double.parseDouble(doubleValue));}public static String formatDouble(double doubleValue, int fractionDigits) {NumberFormat nf = NumberFormat.getInstance();nf.setGroupingUsed(false);nf.setMaximumFractionDigits(fractionDigits);return nf.format(doubleValue);}public static String formatDouble(String doubleValue) {NumberFormat nf = NumberFormat.getInstance();nf.setGroupingUsed(false);nf.setMaximumFractionDigits(2);return nf.format(Double.parseDouble(doubleValue));}public static String formatDouble(double doubleValue) {NumberFormat nf = NumberFormat.getInstance();nf.setGroupingUsed(false);nf.setMaximumFractionDigits(2);return nf.format(doubleValue);}public static String getInt(Object str) {return Integer.toString(Integer.parseInt(str.toString().replaceAll("\\.\\d+", "")));}public static String getYesterday(String formatter) {SimpleDateFormat df = new SimpleDateFormat(formatter);Calendar calendar = Calendar.getInstance();calendar.add(Calendar.DATE, -1);return df.format(calendar.getTime());}public static void main(String[] args) {System.out.print(getDate());} }

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