微信支付V2&V3版本服务端代码

package com.baichang.utils; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.*; public final class DateUtil { /** * default date format pattern */ public final static String DATE_FORMAT = "yyyy-MM-dd"; public final static String MONTH_DATE_FORMAT = "MM-dd"; public final static String YEAR_WEEK_FORMAT = "yyyy-ww"; public final static String YEAR_MONTH_FORMAT = "yyyy-MM"; public final static String YEAR_WEEK_FORMAT_SHORT = "yy-ww"; public final static String YEAR_MONTH_FORMAT_SHORT = "yy-MM"; public final static String DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm"; public final static String FULL_DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss"; public final static String TIME_FORMAT = "HH:mm"; public final static String MONTH_DAY_HOUR_MINUTE_FORMAT = "MM-dd HH:mm"; public final static String LOCATE_DATE_FORMAT = "yyyyMMddHHmmss"; private static final int DAYS_OF_A_WEEK = 7; private DateUtil() { } /** * parse date with the default pattern * * @param date string date * @return the parsed date */ public static Date parseDate(String date) { SimpleDateFormat format = new SimpleDateFormat(DATE_FORMAT); try { return format.parse(date); } catch (Exception e) { return null; } } public static Date getTodayStartDate() { return parseDate(getNowDate() + " 00:00:00", "yyyy-MM-dd HH:mm:ss"); } public static Date parseDate(String date, String pattern) { SimpleDateFormat format = new SimpleDateFormat(pattern); try { return format.parse(date); } catch (ParseException e) { return new Date(); } } /** * 获取增加小时后的 Date * * @param date * @param i * @return squall add 20100225 */ public static Date addHour(Date date, int i) { Calendar calendar = getDefaultCalendar(); calendar.setTime(date); calendar.add(Calendar.HOUR, i); return calendar.getTime(); } /** * format date with the default pattern * * @param date the date that want to format to string * @return the formated date */ public static String formatDate(Date date) { SimpleDateFormat format = new SimpleDateFormat(DATE_FORMAT); return format.format(date); } public static String formatTime(Date date) { SimpleDateFormat format = new SimpleDateFormat(TIME_FORMAT); return format.format(date); } /** * format date with the given pattern * * @param date the date that want to format to string * @param pattern the formated pattern * @return the formated date */ public static String formatDate(Date date, String pattern) { SimpleDateFormat format = new SimpleDateFormat(pattern); return format.format(date); } /** * get current date * * @return the string of current date */ public static String getCurrentDateFormat() { return formatDate(new Date()); } public static String getCurrentDateStr() { return formatDate(new Date(),"yyyyMMdd"); } public static String getCurrentTimeFormat() { return formatTime(new Date()); } /** * get number of days between the two given date * * @param fromDate the begin date * @param endDate the end date * @return the number of days between the two date */ public static int getDateNum(Date fromDate, Date endDate) { long days = (endDate.getTime() - fromDate.getTime()) / (1000 * 60 * 60 * 24); return (int) days; } /** * add day to the date * * @param date the added date * @param number the number to add to the date * @return the added date */ public static Date addDate(Date date, int number) { Calendar calendar = getDefaultCalendar(); calendar.setTime(date); calendar.add(Calendar.DATE, number); return calendar.getTime(); } public static Date addMonth(Date date, int number) { Calendar calendar = getDefaultCalendar(); calendar.setTime(date); calendar.add(Calendar.MONTH, number); return calendar.getTime(); } public static Date addYear(Date date, int number) { Calendar calendar = getDefaultCalendar(); calendar.setTime(date); calendar.add(Calendar.YEAR, number); return calendar.getTime(); } /** * get the default calendar * * @return the calendar instance */ public static Calendar getDefaultCalendar() { Calendar calendar = Calendar.getInstance(); calendar.setFirstDayOfWeek(Calendar.MONDAY); return calendar; } /** * format the date into string value * * @param calendar the formated calendar * @return the string date */ public static String getStringDate(Calendar calendar) { int year = calendar.get(Calendar.YEAR); int month = calendar.get(Calendar.MONTH) + 1; int day = calendar.get(Calendar.DAY_OF_MONTH); return year + "-" + getNiceString(month) + "-" + getNiceString(day); } /** * according to the pattern yyyy-MM-dd * * @param value the value * @return the formated value */ public static String getNiceString(int value) { String str = "00" + value; return str.substring(str.length() - 2, str.length()); } /** * get calendar from date * * @param date the passing date * @return the calendar instance */ public static Calendar getCalendarFromDate(Date date) { Calendar calendar = getDefaultCalendar(); calendar.setTime(date); return calendar; } public static String getInterval(Date startDate, Date endDate) { long intervalTime = endDate.getTime() - startDate.getTime(); return getInterval(intervalTime); } public static int getIntervalMinute(Date startDate, Date endDate) { long intervalTime = endDate.getTime() - startDate.getTime(); return (int) (intervalTime / (1000 * 60)); } public static String getInterval(long intervalTime) { int hour = (int) (intervalTime / (1000 * 60 * 60)); int minute = (int) (intervalTime / (1000 * 60) - hour * 60); int second = (int) ((intervalTime / 1000) - hour * 60 * 60 - minute * 60); if (hour > 0) { return hour + "小时 " + minute + "分 " + second + "秒"; } else if (minute > 0) { return minute + "分钟 " + second + "秒"; } else { return second + "秒"; } } public static int getYear(Date date) { Calendar calendar = getCalendarFromDate(date); return calendar.get(Calendar.YEAR); } public static int getMonth(Date date) { Calendar calendar = getCalendarFromDate(date); return calendar.get(Calendar.MONTH) + 1; } public static int getDayOfMonth(Date date) { Calendar calendar = getCalendarFromDate(date); return calendar.get(Calendar.DAY_OF_MONTH); } public static int getHour(Date now) { Calendar calendar = getCalendarFromDate(now); return calendar.get(Calendar.HOUR_OF_DAY); } public static int getWeekOfYear(Date date) { Calendar calendar = getCalendarFromDate(date); calendar.setFirstDayOfWeek(Calendar.MONDAY); return calendar.get(Calendar.WEEK_OF_YEAR) - 1; } public static Date getCurrentDate() { Calendar calendar = getCalenda