在jsp中，得到今天的日期，如果得到上周日和下周六的日期？（在线等待）

Question

:0你用的是Date类吧？
Calendar类里面有你要的方法。

Answer 1

http://expert.csdn.net/Expert/topic/1746/1746470.xml?temp=.2611505

Answer 2

Date now = new Date(); 
        String injtime="",tmonth="";
        Calendar cal  = Calendar.getInstance();
        int week;
        week=cal.get(Calendar.DAY_OF_WEEK);

Answer 3

我用了DAY_OF_WEEK,怎么显示7?

Answer 4

//下个星期六
Calendar cal = Calendar.getInstance();
cal.set(Calendar.DAY_OF_WEEK,Calendar.SATURDAY);
cal.add(Calendar.WEEK_OF_YEAR,1);//上个星期天
Calendar cal = Calendar.getInstance();
cal.set(Calendar.DAY_OF_WEEK,Calendar.SUNDAY);
cal.add(Calendar.WEEK_OF_YEAR,-1);

Answer 5

import java.text.*;
import java.util.*;
public class week 
{
public static void main(String[] args) 
{
        int now_week_day;
        SimpleDateFormat format_time = new SimpleDateFormat("yyyy-MM-dd");
Calendar nowTime,c;
nowTime= Calendar.getInstance();
c=nowTime;
now_week_day=nowTime.get(Calendar.DAY_OF_WEEK);//得到今天是星期几.
        nowTime.add(Calendar.DATE, -(now_week_day-1));//得到上个星期天的日子.
        Date now = nowTime.getTime();
        String nowdate = format_time.format(now);
System.out.println(nowdate);
}
}

Answer 6

ChDw(米) :Calendar cal = Calendar.getInstance();cal.set(Calendar.DAY_OF_WEEK,Calendar.SUNDAY);
cal.add(Calendar.WEEK_OF_YEAR,-1);
cal.get(Calendar.DAY_OF_WEEK);
System.out.println("DAY_OF_WEEK: "+cal.get(Calendar.DAY_OF_WEEK));这样的调用结果是：1？
该如何正确得到这样的信息呢=YYYY_MM_DD ?

Answer 7

Calendar cal = Calendar.getInstance();
cal.set(Calendar.DAY_OF_WEEK,Calendar.SATURDAY);
cal.add(Calendar.WEEK_OF_YEAR,1);
int m=cal.get(Calendar.MONTH)+1;
System.out.println(cal.get(Calendar.YEAR)+"-"+m+"-"+cal.get(Calendar.DAY_OF_MONTH));

Answer 8

GregorianCalendar g = new GregorianCalendar();
  g.clear();
  g.setTime(new Date());
  g.add(g.DATE,DAY_OF_WEEK);
  Date DAY= g.getTime();

Answer 9

最后我的解决方案：
Calendar cal = Calendar.getInstance();cal.set(Calendar.DAY_OF_WEEK,Calendar.SUNDAY);
cal.add(Calendar.WEEK_OF_YEAR,0);
int month=cal.get(Calendar.MONTH)+1;
System.out.println("SUNDAY:"+cal.get(Calendar.YEAR)+"-"+month+"-"+cal.get(Calendar.DAY_OF_MONTH));cal.set(Calendar.DAY_OF_WEEK,Calendar.SATURDAY);
cal.add(Calendar.WEEK_OF_YEAR,0);int month1=cal.get(Calendar.MONTH)+1;
System.out.println("SATURDAY:"+cal.get(Calendar.YEAR)+"-"+month1+"-"+cal.get(Calendar.DAY_OF_MONTH));得出的结果：2003-5-4
            2003-5-10如何得到：2003-05-04的格式呢？

Answer 10

// 得到当前日期所在周的周日和周六-----------------------------------
Calendar cal = Calendar.getInstance();cal.set(Calendar.DAY_OF_WEEK,Calendar.SUNDAY);
cal.add(Calendar.WEEK_OF_YEAR,0);
cal.get(Calendar.DAY_OF_WEEK);
Date sunday=cal.getTime();SimpleDateFormat format_time = new SimpleDateFormat("yyyy-MM-dd");
System.out.println("SUNDAY: "+format_time.format(sunday));cal.set(Calendar.DAY_OF_WEEK,Calendar.SATURDAY);
cal.add(Calendar.WEEK_OF_YEAR,0);
cal.get(Calendar.DAY_OF_WEEK);
Date saturday=cal.getTime();System.out.println("SATURDAY: "+format_time.format(saturday));
结果：2003-05-04
      2003-05-10谢谢各位的大力帮助。

Answer 11

public String format(){
        String date=null;
        String year=cal.get(Calendar.YEAR)+"";
        String month=(cal.get(Calendar.MONTH)+1)+"";
        if(month.length()==1)
        {
            month="0"+month;
        }
        String day=cal.get(Calendar.DAY_OF_MONTH)+"";
        if(day.length()==1)
        {
            day="0"+day;
        }
        date=year+"-"+month+"-"+day;
        return date;
    }