dateutil.java

事件提醒系统

package com.myoa.cal.util;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import com.myoa.cal.model.CalDate;

public class DateUtil {
	public java.sql.Timestamp StrToDate(String time){
		DateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

		Date Udate = null;
		java.sql.Timestamp Sdate = null;
		try {
			Udate = dateformat.parse(time);
			Sdate = new java.sql.Timestamp(Udate.getTime());
		}catch(Exception e){

		}
			if(Udate != null){
				return Sdate;
			}else{
				return null;				
			}			
	}
	

	
	public String StrToStrDate(String time){
		DateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		DateFormat dateformat1 = new SimpleDateFormat("yyyy-M-d");
		Date Udate = null;
		java.sql.Date Sdate = null;
		String date0 = null;
		try {
			Udate = dateformat.parse(time);
			date0 = dateformat1.format(Udate);
		}catch(Exception e){

		}
		return date0;		
	}
	
	
	public String StrToStrTime(String time){
		DateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		DateFormat dateformat1 = new SimpleDateFormat("yyyy-M-d H:m:s");
		Date Udate = null;
		java.sql.Date Sdate = null;
		String date0 = null;
		try {
			Udate = dateformat1.parse(time);
			date0 = dateformat.format(Udate);
		}catch(Exception e){

		}
		return date0;		
	}
	
	
	//获得年月格式的时间
	public java.util.Date getYYMM(String yymm){
		DateFormat dateformat = new SimpleDateFormat("yyyy-MM");
		java.util.Date date = null;
		try {
			date = dateformat.parse(yymm);
		} catch (ParseException e) {
			// TODO 自动生成 catch 块
			e.printStackTrace();
		}
		if(date != null){
			return date;
		}else{
			return null;				
		}
	}
	
	//把时间转化为字符串
	public String DateTimeToStr(java.util.Date ts){
		DateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
		String date_str = dateformat.format(ts);
		return date_str;
	}
	
	public java.sql.Date UDateToSDate(java.util.Date d){
		java.sql.Date date = new java.sql.Date(d.getTime());
		return date;
		
	}
	
	public String StringDate(String str1){
		
		DateFormat dateformat = new SimpleDateFormat("yyyy-MM");
		java.util.Date d;
		String str2 = null;
		try {
			d = dateformat.parse(str1);
			str2 = dateformat.format(d);
		} catch (ParseException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		return str2;
	}
	
	
	//获取所有的提示时间 
	public List remindTime(java.util.Date occurtime,int early_mm,int space_mm){
		
		long early = early_mm * 60 * 1000;
		long space = space_mm * 60 * 1000;
		
		List<Date> list = new ArrayList<Date>();
		java.util.Date remindtime = new Date(occurtime.getTime() - early);

		list.add(remindtime);
		Date spacetime = new Date(remindtime.getTime() + space);

		while(spacetime.before(occurtime)){
			Date addtime = new Date();
			addtime.setTime(spacetime.getTime());			
			list.add(addtime);
			spacetime.setTime(spacetime.getTime() + space);
		}
		return list;
	}
	
	public String getToday(){
		DateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd");
		Date date = new Date();
		String today = null;
		try {
			today = dateformat.format(date);
		} catch (RuntimeException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return today;
	}
	public static void main(String[] args){
		DateUtil util = new DateUtil();
//		//System.out.println(util.StrToDate("2009-02-25 10:25:11"));
//		List<CalDate> date = util.remindTime(util.StrToDate("2009-02-25 10:26:11"), 30, 5);
//		System.out.println(date.size());
//		for(int i=0;i<date.size();i++){
//			System.out.println(date.get(i));
//		}
		Date d = util.StrToDate("2009-03-02 12:11:05");
		String aa = "2009-03-02 12:11:05";
		DateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
		java.sql.Timestamp dd=null;
		dd = new java.sql.Timestamp(d.getTime());
		System.out.println(d);
		System.out.println(dd);
	}
	
}