博客
关于我
强烈建议你试试无所不能的chatGPT，快点击我
DateHandler日期处理工具(JSP中使用后台工具类)
阅读量：6788 次
发布时间：2019-06-26

本文共 18907 字，大约阅读时间需要 63 分钟。

1.DateHandler.java

package Utils.dateHandler;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Date;public class DateHandler {        /**     * 改变日期为String类型：格式为yyyy-MM-dd     * @param date 日期     * @return String类型的转换结果     */    public static String dateToString(Date date) {        String sdate = "";        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");        if(date != null) {            sdate = formatter.format(date);        }        return sdate;    }        /**     * 改变日期为String类型：格式为yyyy-MM-dd HH:mm     * @param date 日期     * @return String类型的转换结果     */    public static String dateToStringHourMinute(Date date) {        String sdate = "";        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm");        if(sdate != null) {            sdate = formatter.format(date);        }        return sdate;    }        /**     * 改变日期为String类型：格式自定义     * @param date 日期     * @param format 格式     * @return String类型的转换结果     */    public static String dateToString(Date date, String format) {        String sdate = "";        SimpleDateFormat formatter = new SimpleDateFormat(format);        if(sdate != null) {            sdate = formatter.format(date);        }        return sdate;    }        /**     * 改变String记录的日期为java.util.Date类型     * @param date String类型日期     * @return Date类型转换结果     * @throws ParseException     */    public static Date changeStringToDate(String date) throws ParseException {        Date t = null;        if((date != null) && (!date.trim().equals(""))) {            try {                SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");                t = formatter.parse(date);            } catch(ParseException ex) {                ex.printStackTrace();                throw new RuntimeException(ex);            }        }        return t;    }        /**     * 改变String记录的日期为java.util.Date类型，格式自定义     * @param date String类型日期     * @param format 自定义格式模板     * @return Date类型日期转换结果     * @throws ParseException     */    public static Date changeStringToDate(String date, String format) throws ParseException {        Date t = null;        if((date != null) && (!date.trim().equals(""))) {            try {                SimpleDateFormat formatter = new SimpleDateFormat(format);                t = formatter.parse(date);            } catch(ParseException ex) {                ex.printStackTrace();                throw new RuntimeException(ex);            }        }        return t;    }}

 2.使用:

package Utils.dateHandler;import java.text.ParseException;import java.util.Date;import org.junit.Test;public class Test111 {    @Test    public void test1() throws ParseException{        System.out.println(DateHandler.dateToString(new Date()));        System.out.println(DateHandler.dateToString(new Date(), "yyyy-MM-dd hh:mm:ss"));        System.out.println(DateHandler.dateToStringHourMinute(new Date()));        System.out.println(DateHandler.changeStringToDate("1900-05-06"));        System.out.println(DateHandler.changeStringToDate("1925-02-20 15:25:30","yyyy-MM-dd hh:mm:ss" ));    }}

 

 

2017-09-16

2017-09-16 11:15:10
2017-09-16 11:15
Sun May 06 00:00:00 CST 1900
Fri Feb 20 15:25:30 CST 1925

 

 

 

 

也可以在JSP页面中使用该工具类:比如：

JSP中引入该类:

<%@ page import="java.util.*,Utils.DateHandler" %>

 

文本框中取服务器当前时间:

 

结果:

 

 

--------------------------------------------------------------------------

更全的日期工具类:

DateHandler.java
package com.tyust.common;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;import java.util.GregorianCalendar;import org.junit.Test;public class DateHandler {    /**     * 把一个日期转换成指定格式的字符串     * @param time     * @return     */    public static String dateToString(Date time) {        String ctime = "";        SimpleDateFormat formatter;        formatter = new SimpleDateFormat("yyyy-MM-dd");        if (time != null) {            ctime = formatter.format(time);        }        return ctime;    }        public static String dateToStringHourMinute(Date time) {        String ctime = "";        SimpleDateFormat formatter;        formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm");        if (time != null) {            ctime = formatter.format(time);        }        return ctime;    }    // 把String转换成Date    public static Date changeStringToDate(String time) throws ParseException {        Date t = null;        if (time != null && !time.trim().equals("")) {            try {                SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");                t= formatter.parse(time);            } catch (ParseException e) {                e.printStackTrace();                throw new java.lang.RuntimeException(e);            }        }        return t;    }    // 把String转换成Date如：2010-01-07 13:10:10,yyyy-MM-dd HH:mm:ss    public static Date changeStringToDate(String time,String fomat) throws ParseException {        Date t = null;        if (time != null && !time.trim().equals("")) {            try {                SimpleDateFormat formatter = new SimpleDateFormat(fomat);                t= formatter.parse(time);            } catch (ParseException e) {                e.printStackTrace();                throw new java.lang.RuntimeException(e);            }        }        return t;    }    //把Date转换成String如：2010-01-07 13:10:10    public static String dateToString(Date time,String fomat) {        String ctime = "";        SimpleDateFormat formatter = new SimpleDateFormat(fomat);        if (time != null) {            ctime = formatter.format(time);        }        return ctime;    }     /**     * 获得下季度第一天      * @author zxg     * @param month     * @return     */    public static Date getNextSeasonFirstDay(int month){            int array[][] = {
   {1,2,3},{4,5,6},{7,8,9},{10,11,12}};            int season = 1;            if(month>=1&&month<=3){                season = 2;            }            if(month>=4&&month<=6){                season = 3;            }            if(month>=7&&month<=9){                season = 4;            }            if(month>=10&&month<=12){                season = 1;            }            int start_month = array[season-1][0];                        Date date = new Date();            SimpleDateFormat   dateFormat   =   new   SimpleDateFormat("yyyy");//可以方便地修改日期格式               String  years  = dateFormat.format(date);               int years_value = Integer.parseInt(years);            if(month>=10&&month<=12){               years_value++;           }           int start_days =1;//years+"-"+String.valueOf(start_month)+"-1";//getLastDayOfMonth(years_value,start_month);            String seasonDateStr = years_value+"-"+start_month+"-"+start_days;            Date seasonDate=new Date();            try {                seasonDate = changeStringToDate(seasonDateStr);            } catch (ParseException e) {                // TODO Auto-generated catch block                e.printStackTrace();            }           return seasonDate;                    }     /**     * 获得季度的第一天和最后一天     * @author zxg     * @param month     * @param isThisSeason:     *             (1)true:本季度第一天和最后一天     *             (2)false:上季度第一天和最后一天     * @return     */    public static String getSeasonFirstEndDay(int month,boolean isThisSeason){         int array[][] = {
   {1,2,3},{4,5,6},{7,8,9},{10,11,12}};         int season = 1;         if(month>=1&&month<=3){             if(isThisSeason){                   season = 1;                }else{                   season = 4;               }         }         if(month>=4&&month<=6){             if(isThisSeason){                   season = 2;                }else{                   season = 1;               }         }         if(month>=7&&month<=9){             if(isThisSeason){                   season = 3;                }else{                   season = 2;               }         }         if(month>=10&&month<=12){             if(isThisSeason){                   season = 4;                }else{                   season = 3;               }         }         int start_month = array[season-1][0];         int end_month = array[season-1][2];                  Date date = new Date();         SimpleDateFormat   dateFormat   =   new   SimpleDateFormat("yyyy");//可以方便地修改日期格式            String  years  = dateFormat.format(date);            int years_value = Integer.parseInt(years);         if(month>=1&&month<=3&&!isThisSeason){            years_value--;        }        int start_days =1;//years+"-"+String.valueOf(start_month)+"-1";//getLastDayOfMonth(years_value,start_month);         int end_days = getLastDayOfMonth(years_value,end_month);         String seasonDate = years_value+"-"+start_month+"-"+start_days+";"+years_value+"-"+end_month+"-"+end_days;         return seasonDate;              }     /**     * 获得下季度的第一天和最后一天     * @author zxg     * @param month     * @return     */    public static String getDownSeasonFirstEndDay(int month){         int array[][] = {
   {1,2,3},{4,5,6},{7,8,9},{10,11,12}};         int season = 1;         if(month>=1&&month<=3){             season = 2;         }         if(month>=4&&month<=6){             season = 3;         }         if(month>=7&&month<=9){             season = 4;         }         if(month>=10&&month<=12){             season = 1;         }         int start_month = array[season-1][0];         int end_month = array[season-1][2];                  Date date = new Date();         SimpleDateFormat   dateFormat   =   new   SimpleDateFormat("yyyy");//可以方便地修改日期格式            String  years  = dateFormat.format(date);            int years_value = Integer.parseInt(years);         if(month>=10&&month<=12){            years_value++;        }        int start_days =1;//years+"-"+String.valueOf(start_month)+"-1";//getLastDayOfMonth(years_value,start_month);         int end_days = getLastDayOfMonth(years_value,end_month);         String seasonDate = years_value+"-"+start_month+"-"+start_days+";"+years_value+"-"+end_month+"-"+end_days;         return seasonDate;              }     /**     * 获得季度首月的25号     * （业务需求改变，要求改为季度首月10号）     * @author zxg     * @param month     * @param isThisSeason:     *             (1)true:本季度首月的25号 （本季度首月10号）     *             (2)false:下季度首月的25号 （下季度首月10号）     * @return     */    public static Date getSeasonTwentyFive(int month,boolean isThisSeason){            int array[][] = {
   {1,2,3},{4,5,6},{7,8,9},{10,11,12}};            int season = 1;            if(month>=1&&month<=3){               if(isThisSeason){                   season = 1;                }else{                   season = 2;               }           }            if(month>=4&&month<=6){                if(isThisSeason){                   season = 2;                }else{                   season = 3;               }           }            if(month>=7&&month<=9){                if(isThisSeason){                   season = 3;                }else{                   season = 4;               }            }            if(month>=10&&month<=12){                if(isThisSeason){                   season = 4;                }else{                   season = 1;               }            }            int start_month = array[season-1][0];                        Date date = new Date();            SimpleDateFormat   dateFormat   =   new   SimpleDateFormat("yyyy");//可以方便地修改日期格式               String  years  = dateFormat.format(date);               int years_value = Integer.parseInt(years);            if(month>=10&&month<=12&&!isThisSeason){               years_value++;           }           int start_days =10;            String seasonDateStr = years_value+"-"+start_month+"-"+start_days;            Date seasonDate=new Date();            try {                seasonDate = changeStringToDate(seasonDateStr);            } catch (ParseException e) {                e.printStackTrace();            }           return seasonDate;                    }    /**     * 获得季度首月的26号     * （业务需求改变，要求改为季度首月11号）     * @author zxg     * @param month     * @param isThisSeason:     *             (1)true:本季度首月的26号 （本季度首月11号）     *             (2)false:上季度首月的26号  （上季度首月11号）     * @return     */    public static Date getSeasonTwentySix(int month,boolean isThisSeason){            int array[][] = {
   {1,2,3},{4,5,6},{7,8,9},{10,11,12}};            int season = 1;            if(month>=1&&month<=3){               if(isThisSeason){                   season = 1;                }else{                   season = 4;               }           }            if(month>=4&&month<=6){                if(isThisSeason){                   season = 2;                }else{                   season = 1;               }           }            if(month>=7&&month<=9){                if(isThisSeason){                   season = 3;                }else{                   season = 2;               }            }            if(month>=10&&month<=12){                if(isThisSeason){                   season = 4;                }else{                   season = 3;               }            }            int start_month = array[season-1][0];                        Date date = new Date();            SimpleDateFormat   dateFormat   =   new   SimpleDateFormat("yyyy");//可以方便地修改日期格式               String  years  = dateFormat.format(date);               int years_value = Integer.parseInt(years);            if(month>=1&&month<=3&&!isThisSeason){                years_value--;            }           int start_days =11/*26*/;            String seasonDateStr = years_value+"-"+start_month+"-"+start_days;            Date seasonDate=new Date();            try {                seasonDate = changeStringToDate(seasonDateStr);            } catch (ParseException e) {                e.printStackTrace();            }           return seasonDate;                    }    /**     * 获取某年某月的最后一天     * @author zxg     * @param year 年     * @param month 月     * @return 最后一天     */    public static int getLastDayOfMonth(int year, int month) {          if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8                    || month == 10 || month == 12) {                return 31;          }          if (month == 4 || month == 6 || month == 9 || month == 11) {                return 30;          }          if (month == 2) {                if (isLeapYear(year)) {                    return 29;                } else {                    return 28;                }          }          return 0;    }         /**    * 计算2个日期中间间隔的时间    */   public static int getIntervalDays(Date startday,Date endday){       if(startday.after(endday)){            Date cal=startday;            startday=endday;            endday=cal;        }               long sl=startday.getTime();        long el=endday.getTime();              long ei=el-sl;                  return (int)(ei/(1000*60*60*24)+1);    }   /**    * 是否闰年    * @author zxg    * @param year 年    * @return     */   public static boolean isLeapYear(int year) {         return (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);   }   /**     * 获取当天的最后一秒     * @return     */      public static Date getDayLastSecond(){        Date targetDate = new Date();        String dateStr = dateToString(targetDate);        try {            targetDate = changeStringToDate(dateStr+" 23:59:59","yyyy-MM-dd HH:mm:ss");        } catch (ParseException e) {            e.printStackTrace();        }        System.out.println("targetDate:"+targetDate);        return targetDate;      }/*** 获取当天的第一秒* @return*/public static Date getDayFirstSecond(){    Date targetDate = new Date();    String dateStr = dateToString(targetDate);    try {        targetDate = changeStringToDate(dateStr+" 00:00:00","yyyy-MM-dd HH:mm:ss");    } catch (ParseException e) {        e.printStackTrace();    }    return targetDate;}    /**     * date:2012-12-01||2012-12-31     * type:第一天：10   最后一天：20；     * getDayFirstLast(这里用一句话描述这个方法的作用)     * (这里描述这个方法适用条件 – 可选)     * @param type     * @return      *Date     * @throws ParseException      * @exception      * @since  1.0.0     */    public static Date getDayFirstLast(Date dateParm,String type) throws ParseException{        Date targetDate = new Date();        String dateStr=dateToString(dateParm);        if("10".equals(type)){            targetDate = changeStringToDate(dateStr+" 00:00:00","yyyy-MM-dd HH:mm:ss");            return targetDate;        }else if("20".equals(type)){            targetDate = changeStringToDate(dateStr+" 23:59:59","yyyy-MM-dd HH:mm:ss");            return targetDate;        }else{            return new Date();        }    }    public static Date nextday(){        Date date = new Date();       Calendar calendar = GregorianCalendar.getInstance();       calendar.setTime(date);       calendar.add(Calendar.DATE, 1);       date = calendar.getTime();       return date;    }    /**     * 根据参数得到指定时间段后的一天     * nextDayByType(这里用一句话描述这个方法的作用)     * (这里描述这个方法适用条件 – 可选)     * @param day     * @return      *Date     * @exception      * @since  1.0.0     */    public static Date nextDayByType(int day){       Date date = new Date();       Calendar calendar = GregorianCalendar.getInstance();       calendar.setTime(date);       calendar.add(Calendar.DATE, day);       date = calendar.getTime();       return date;    }    public static Date nextDayByType(Date crruDate, int day){           Calendar calendar = GregorianCalendar.getInstance();           calendar.setTime(crruDate);           calendar.add(Calendar.DATE, day);           crruDate = calendar.getTime();           return crruDate;        }    /*     * 单元测试     */    @Test    public void dateExample(){//        System.out.println("获得下季度第一天 :"+getNextSeasonFirstDay(4));//        System.out.println("获得本季度首月的26号:"+getSeasonTwentySix(1,true));//        System.out.println("获得上季度首月的26号:"+getSeasonTwentySix(1,false));//        //        System.out.println("获得本季度的第一天和最后一天:"+getSeasonFirstEndDay(10,true));//        System.out.println("获得上季度的第一天和最后一天:"+getSeasonFirstEndDay(10,false));    }    @Test    public void currMonth(){        String str =  "" ;        SimpleDateFormat sdf= new  SimpleDateFormat( "yyyy-MM-dd" );        Calendar lastDate = Calendar.getInstance();        int month=lastDate.get(Calendar.MONTH);         str=sdf.format(lastDate.getTime());//        System.out.println("month :"+month);//        String dayStr=getSeasonFirstEndDay(9,true);//        String str[]=dayStr.split(";");//        try {//            System.out.println("str[0] :"+changeStringToDate(str[0]));//        } catch (ParseException e) {//            // TODO Auto-generated catch block//            e.printStackTrace();//        }//        System.out.println("str[1] :"+str[1]);    }    @Test    public void dateTest() throws ParseException{        System.out.println("获得下季度第一天 :"+dateToString(nextDayByType(changeStringToDate("2013-01-02 14:30:30", "yyyy-MM-dd HH:mm:ss"),12),"yyyy-MM-dd HH:mm:ss"));    }}

 

转载地址：http://xcsgo.baihongyu.com/

你可能感兴趣的文章
10+31=100小组项目第五周总结报告
查看>>
Python 爬取高清桌面壁纸
查看>>
测试-html格式
查看>>
选择排序
查看>>
安装nginx&&node环境nginx转发端口
查看>>
Java知多少（7）类与对象
查看>>
评论递归无极显示
查看>>
用学习逃避成长，听新知缓解焦虑
查看>>
selenium 如何处理table
查看>>
从流程浅析网站性能优化点
查看>>
Java笔试题库之选题题篇【71-140题】
查看>>
spring的依赖注入（DI）、控制反转（IOC）和面向切面（AOP）
查看>>
Web前端面试宝典（最新）
查看>>
@font-face字图标问题
查看>>
python-week1-postman+jemter-soapUI
查看>>
POJ 3349 Snowflake Snow Snowflakes 暴力
查看>>
LoadRunner性能测试入门教程
查看>>
Java I/O Properties的使用 存取配置文件
查看>>
关于开源的一点看法
查看>>
bzoj 3328 PYXFIB——单位根反演
查看>>
喝酒易醉，品茶养心，人生如梦，品茶悟道，何以解忧？唯有杜康！-- 愿君每日到此一游！
当前时间: 2025-01-30 22:37:18   当前IP: 3.145.65.133   联系邮箱:javaeecc@qq.com     Copyright © 2020 - 2022 baihongyu.com 京ICP备2021015314号-2
强烈建议你试试无所不能的CHAT-GPT，快点击我
强烈建议你试试无所不能的CHAT-GPT，快点击我