convertdate.java

功能是公安和学校的管理系统,用struts+hibernate+spring等匡架组成,在eclepse就能编译

/***编写作者: comingnet           																	********/
/***编写时间：20070201            																	********/
/***修改作者：gemhoo              																	********/
/***修改时间：20070207            																	********/
/***修改说明： ijipin->comingnet 																	********/
/*** 类名:    ConvertDate.java    													        		********/
/***功能说明: 工具配置类       																		********/
/***                              																	********/
package com.comingnet.tool;

import java.io.PrintStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

public class ConvertDate
{

    public ConvertDate()
    {
    }

    public Date stringToDate(String str)
    {
        String strFormat = "yyyy-MM-dd HH:mm:ss";
        int iLen = str.length();
        if(str == null)
            return null;
        iLen = str.length();
        if(iLen == 10)
            strFormat = "yyyy-MM-dd";
        else
        if(iLen == 16)
            strFormat = "yyyy-MM-dd HH:mm";
        else
        if(iLen == 19)
            strFormat = "yyyy-MM-dd HH:mm:ss";
        SimpleDateFormat sdFormat = new SimpleDateFormat(strFormat);
        Date date = new Date();
        try
        {
            date = sdFormat.parse(str);
        }
        catch(Exception e)
        {
            Date date1 = null;
            return date1;
        }
        return date;
    }

    public Date stringToDate(String str, String strFormat)
    {
        SimpleDateFormat sdFormat = new SimpleDateFormat(strFormat);
        Date date = new Date();
        try
        {
            date = sdFormat.parse(str);
        }
        catch(Exception e)
        {
            Date date1 = null;
            return date1;
        }
        return date;
    }

    public String dateToYMD(Date dt)
    {
        SimpleDateFormat sdFormat = new SimpleDateFormat("yyyy-MM-dd");
        String str = "";
        try
        {
            str = sdFormat.format(dt);
        }
        catch(Exception e)
        {
            String s = "";
            return s;
        }
        if(str.equals("1900-01-01"))
            str = "";
        return str;
    }

    public String dateToString(Date dt)
    {
        SimpleDateFormat sdFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");
        String str = "";
        try
        {
            str = sdFormat.format(dt);
        }
        catch(Exception e)
        {
            String s = "";
            return s;
        }
        if(str.equals("1900-01-01 00:00"))
            str = "";
        return str;
    }

    public String dateToString(Date dt, String strFormat)
    {
        SimpleDateFormat sdFormat = new SimpleDateFormat(strFormat);
        String str = "";
        try
        {
            str = sdFormat.format(dt);
        }
        catch(Exception e)
        {
            String s = "";
            return s;
        }
        if(str.equals("1900-01-01 00:00"))
            str = "";
        return str;
    }

    public Date nextDay(Date dt)
    {
        Date nextDay = null;
        nextDay = new Date(dt.getYear(), dt.getMonth(), dt.getDate() + 1);
        return nextDay;
    }

    public Date dayAfter(Date dt, int days)
    {
        Date nextDay = null;
        nextDay = new Date(dt.getYear(), dt.getMonth(), dt.getDate() + days);
        return nextDay;
    }

    public Date dayBefore(Date dt, int days)
    {
        Date nextDay = null;
        nextDay = new Date(dt.getYear(), dt.getMonth(), dt.getDate() - days);
        return nextDay;
    }

    public Date dayAfter(Date dt, int interval, int format)
    {
        Date nextDay = null;
        switch(format)
        {
        case 1: // '\001'
            nextDay = new Date(dt.getYear() + interval, dt.getMonth(), dt.getDate(), dt.getHours(), dt.getMinutes(), dt.getSeconds());
            break;

        case 2: // '\002'
            nextDay = new Date(dt.getYear(), dt.getMonth() + interval, dt.getDate(), dt.getHours(), dt.getMinutes(), dt.getSeconds());
            break;

        case 3: // '\003'
            nextDay = new Date(dt.getYear(), dt.getMonth(), dt.getDate() + interval, dt.getHours(), dt.getMinutes(), dt.getSeconds());
            break;

        case 4: // '\004'
            nextDay = new Date(dt.getYear(), dt.getMonth(), dt.getDate(), dt.getHours() + interval, dt.getMinutes(), dt.getSeconds());
            break;

        case 5: // '\005'
            nextDay = new Date(dt.getYear(), dt.getMonth(), dt.getDate(), dt.getHours(), dt.getMinutes() + interval, dt.getSeconds());
            break;

        case 6: // '\006'
            nextDay = new Date(dt.getYear(), dt.getMonth(), dt.getDate(), dt.getHours(), dt.getMinutes(), dt.getSeconds() + interval);
            break;
        }
        return nextDay;
    }

    public String dateToWeek(Date dt)
    {
        int iDay = dt.getDay();
        String temp = "";
        switch(iDay)
        {
        case 0: // '\0'
            temp = "星期天";
            break;

        case 1: // '\001'
            temp = "星期一";
            break;

        case 2: // '\002'
            temp = "星期二";
            break;

        case 3: // '\003'
            temp = "星期三";
            break;

        case 4: // '\004'
            temp = "星期四";
            break;

        case 5: // '\005'
            temp = "星期五";
            break;

        case 6: // '\006'
            temp = "星期六";
            break;

        default:
            temp = "";
            break;
        }
        return temp;
    }

    public String dayToString(int iDay)
    {
        String temp = "";
        switch(iDay)
        {
        case 0: // '\0'
            temp = "星期天";
            break;

        case 1: // '\001'
            temp = "星期一";
            break;

        case 2: // '\002'
            temp = "星期二";
            break;

        case 3: // '\003'
            temp = "星期三";
            break;

        case 4: // '\004'
            temp = "星期四";
            break;

        case 5: // '\005'
            temp = "星期五";
            break;

        case 6: // '\006'
            temp = "星期六";
            break;

        default:
            temp = "";
            break;
        }
        return temp;
    }

    public int interval(Date first, Date last)
    {
        int inter = 0;
        Date dt_first = stringToDate(dateToYMD(first));
        Date dt_last = stringToDate(dateToYMD(last));
        inter = (int)((dt_last.getTime() - dt_first.getTime()) / (long)0x5265c00);
        return inter;
    }

    public static void main(String args[])
    {
        ConvertDate convertDate = new ConvertDate();
        System.out.println(convertDate.stringToDate("2007-01-10"));
    }
}