java日期获取大全

package com.hellogame.platform.util;

 

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.Calendar;

import java.util.Date;

import java.util.GregorianCalendar;

import java.util.List;

 

import com.hellogame.platform.platformbean.WeekDaysData;

 

public class TimeUtils {

 

/**

 * 获取年月日字符串yyyy-MM-dd HH:mm:ss

 * */

public static String getStringTime(long time) {

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

String dateString = formatter.format(new Date(time));

return dateString;

}

 

/**

 * 获取昨天日期字符串 yyyyMMdd

 * */

 

public static String getYesterdayString() {

Date date = new Date();// 取时间

Calendar calendar = new GregorianCalendar();

calendar.setTime(date);

calendar.add(Calendar.DATE, -1);// 把日期往后增加一天.整数往后推,负数往前移动

date = calendar.getTime(); // 这个时间就是日期往后推一天的结果

SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd");

String dateString = formatter.format(date);

return dateString;

}

 

/**

 * 获取yyyy-MM-dd类型日期

 * */

public static String getStringDate(long time) {

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");

String dateString = formatter.format(new Date(time));

return dateString;

}

 

/**

 * 获取一段日期内的所有日期集合yyyy-MM-dd

 * */

 

public static List<String> getDateList(String startDate, String endDate) {

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

List<String> list = new ArrayList<String>();

try {

Date start = sdf.parse(startDate);

Date end = sdf.parse(endDate);

 

while (start.compareTo(end) <= 0) {

list.add(sdf.format(start));

Calendar calendar = Calendar.getInstance();

calendar.setTime(start);

calendar.add(Calendar.DATE, 1);

start = calendar.getTime();

}

 

} catch (ParseException e1) {

e1.printStackTrace();

list.clear();

return list;

}

return list;

}

 

/**

 * 获取整周 日期集合yyyy-MM-dd

 * */

public static List<WeekDaysData> getWholeWeeks(String startDay, String endDay) {

List<WeekDaysData> list = new ArrayList<WeekDaysData>();

String dayInList = "";

List<String> dayList = getDateList(startDay, endDay);

for(String day : dayList){

String monday = getMonday(day);

String sunday = getSunday(day);

if(!dayInList.contains(monday)){

WeekDaysData weekDaysData = new WeekDaysData();

weekDaysData.setStartTime(monday);

weekDaysData.setEndTime(sunday);

list.add(weekDaysData);

dayInList += monday+",";

}

}

return list;

}

 

/**

 * 获取整月 日期集合yyyy-MM

 * */

public static List<WeekDaysData> getWholeMonths(String startDay, String endDay) {

List<WeekDaysData> list = new ArrayList<WeekDaysData>();

String dayInList = "";

List<String> dayList = getDateList(startDay, endDay);

for(String day : dayList){

String monty = day.substring(0, 7);

if(!dayInList.contains(monty)){

WeekDaysData weekDaysData = new WeekDaysData();

weekDaysData.setMonthTime(monty);

list.add(weekDaysData);

dayInList += monty+",";

}

}

return list;

}

 

/**

 * 获取前三日 日期集合yyyy-MM-dd包含当天

 * */

public static List<WeekDaysData> getThreeDays(String startDay, String endDay) {

List<WeekDaysData> list = new ArrayList<WeekDaysData>();

List<String> dayList = getDateList(startDay, endDay);

for(String day : dayList){

String preDay = getPreOrAfterDayTime(day, -2);

WeekDaysData weekDaysData = new WeekDaysData();

weekDaysData.setStartTime(preDay);

weekDaysData.setEndTime(day);

list.add(weekDaysData);

}

return list;

}

 

/**

 * 获取前七日 日期集合yyyy-MM-dd包含当天

 * */

public static List<WeekDaysData> getSevenDays(String startDay, String endDay) {

List<WeekDaysData> list = new ArrayList<WeekDaysData>();

List<String> dayList = getDateList(startDay, endDay);

for(String day : dayList){

String preDay = getPreOrAfterDayTime(day, -6);

WeekDaysData weekDaysData = new WeekDaysData();

weekDaysData.setStartTime(preDay);

weekDaysData.setEndTime(day);

list.add(weekDaysData);

}

return list;

}

 

/**

 * 获取前三十 日期集合yyyy-MM-dd包含当天

 * */

public static List<WeekDaysData> getThirtyDays(String startDay, String endDay) {

List<WeekDaysData> list = new ArrayList<WeekDaysData>();

List<String> dayList = getDateList(startDay, endDay);

for(String day : dayList){

String preDay = getPreOrAfterDayTime(day, -29);

WeekDaysData weekDaysData = new WeekDaysData();

weekDaysData.setStartTime(preDay);

weekDaysData.setEndTime(day);

list.add(weekDaysData);

}

return list;

}

 

/**

 * 获取当前日期周一yyyy-MM-dd

 * */

public static String getMonday(String day){

SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");

Calendar cal = Calendar.getInstance();

try {

cal.setTime(df.parse(day));

} catch (ParseException e) {

e.printStackTrace();

}

cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY); // 获取本周一的日期

return df.format(cal.getTime());

}

/**

 * 获取当前日期周日yyyy-MM-dd

 * */

public static String getSunday(String day){

SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");

Calendar cal = Calendar.getInstance();

try {

cal.setTime(df.parse(day));

} catch (ParseException e) {

e.printStackTrace();

}

cal.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);

cal.add(Calendar.WEEK_OF_YEAR, 1);

return df.format(cal.getTime());

}

 

/**

 * 获取当前日期前后几日日期 yyyy-MM-dd

 * */

public static String getPreOrAfterDayTime(String day,int number){

SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");

Calendar cal = Calendar.getInstance();

try {

cal.setTime(df.parse(day));

} catch (ParseException e) {

e.printStackTrace();

}

cal.add(Calendar.DATE, number);

return df.format(cal.getTime());

}

 

public static void main(String[] args) {

List<WeekDaysData> list = getThirtyDays("2013-04-25", "2013-04-30");

for(WeekDaysData d : list){

System.out.println(d.getStartTime()+":::"+d.getEndTime()+"::："+d.getMonthTime());

}

}

}

package com.hellogame.platform.platformbean;

 

public class WeekDaysData {

private String startTime = "";//yyyy-MM-dd

private String endTime = "";//yyyy-MM-dd

private String monthTime = "";//yyyy-MM

public String getStartTime() {

return startTime;

}

public void setStartTime(String startTime) {

this.startTime = startTime;

}

public String getEndTime() {

return endTime;

}

public void setEndTime(String endTime) {

this.endTime = endTime;

}

public String getMonthTime() {

return monthTime;

}

public void setMonthTime(String monthTime) {

this.monthTime = monthTime;

}

 

}