/**
* Copyright (c) 2008 CEPRI,Inc.All rights reserved.
* Created by 2013-04-13 */
package com.cepri.cmm.utils;
import java.sql.SQLException;
import java.sql.Time;
import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import org.apache.log4j.Logger;
/**
* @title :日期转换工具
* @description :包含常用日期格式转换操作
* @author:
* @data:
*/
public class DateUtil {
/** Log4j日志 */
private static Logger logger = Logger.getLogger(DateUtil.class);
private static Calendar mycd = Calendar.getInstance();
private static int year = 0;
private static int month = 0;
private static int date = 0;
private static int hour = 0;
private static int minute = 0;
private static int second = 0;
/** 设置系统当前日期 * */
public DateUtil() {
setdate();
}
/** 设置系统时间 * */
private static void setdate() {
year = mycd.get(Calendar.YEAR);
month = mycd.get(Calendar.MONTH) + 1;
date = mycd.get(Calendar.DATE);
hour = mycd.get(Calendar.HOUR);
minute = mycd.get(Calendar.MINUTE);
second = mycd.get(Calendar.SECOND);
}
/** 得到系统当前日期及时间 格式为 yyyy-MM-dd HH:mm:ss * */
public static String getDateTime() {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
return sdf.format(new Date());
}
/** 得到long型的日期值 * */
public static Time getSqlTime() {
return new Time(getTime());
}
/** 获取系统当前时间 * */
public static long getTime() {
java.util.Date dt = new java.util.Date();
return dt.getTime();
}
/** 获取系统当前时间 * */
public static Date getJavaDate() {
return new java.util.Date();
}
/** 获取系统当前日期 得到的日期格式如：2004-10-09 * */
public static java.sql.Date getSqlDate() {
return new java.sql.Date(getTime());
}
/** 取得Timestamp类型时间 * */
public static Timestamp getTimestamp() {
return new Timestamp(getTime());
}
/** 得到Calendar对象 * */
public static Calendar getCD() {
Calendar mycd = Calendar.getInstance();
return mycd;
}
/** 得到时间 * */
public static String getAll(String sStr) {
Calendar mycd = Calendar.getInstance();
return mycd.get(Calendar.YEAR) + sStr + (mycd.get(Calendar.MONTH) + 1)
+ sStr + mycd.get(Calendar.DATE);
}
/** 得到日期,以-为分割符 * */
public static String getAll() {
return getAll("-");
}
/** 得到系统当前年 * */
public static int getYear() {
Calendar mycd = Calendar.getInstance();
return mycd.get(Calendar.YEAR);
}
/** 得到系统当前月 * */
public static int getMonth() {
Calendar mycd = Calendar.getInstance();
return mycd.get(Calendar.MONTH) + 1;
}
/** 得到系统当前日 * */
public static int getDate() {
Calendar mycd = Calendar.getInstance();
return mycd.get(Calendar.DATE);
}
/** 得到系统年 * */
public static int getAddYear() {
return mycd.get(Calendar.YEAR);
}
/** 得到系统月 * */
public static int getAddMonth() {
return mycd.get(Calendar.MONTH) + 1;
}
/** 得到系统日 * */
public static int getAddDate() {
return mycd.get(Calendar.DATE);
}
/** 得到日期格式为yyyy-mm-dd * */
public static String getMiddle() {
return getMiddle("-");
}
/** 得到日期格式为YYYY $sStr MM 其中sStr为分割字符 * */
public static String getMiddleYM(String sStr) {
year = mycd.get(Calendar.YEAR);
month = mycd.get(Calendar.MONTH) + 1;
String re = "" + String.valueOf(year);
if (month < 10)
re += sStr + "0" + String.valueOf(month);
else
re += sStr + String.valueOf(month);
return re;
}
/** 得到日期格式为YYYY $sStr MM $sStr DD其中sStr为分割字符 * */
public static String getMiddle(String sStr) {
year = mycd.get(Calendar.YEAR);
month = mycd.get(Calendar.MONTH) + 1;
date = mycd.get(Calendar.DATE);
String re = "" + String.valueOf(year);
if (month < 10)
re += sStr + "0" + String.valueOf(month);
else
re += sStr + String.valueOf(month);
if (date < 10)
re += sStr + "0" + String.valueOf(date);
else
re += sStr + String.valueOf(date);
return re;
}
/** 得到日期格式为 YYYY $sStr MM $sStr DD $sStr hh:mm:ss其中sStr为分割字符 * */
public static String getTimeStr(String sStr) {
Calendar mycd = Calendar.getInstance();
String re = "" + mycd.get(Calendar.YEAR);
if (mycd.get(Calendar.MONTH) + 1 < 10)
re += sStr + "0" + String.valueOf(mycd.get(Calendar.MONTH) + 1);
else
re += sStr + String.valueOf(mycd.get(Calendar.MONTH) + 1);
if (mycd.get(Calendar.DATE) < 10)
re += sStr + "0" + String.valueOf(mycd.get(Calendar.DATE));
else
re += sStr + String.valueOf(mycd.get(Calendar.DATE));
if (mycd.get(Calendar.HOUR) < 10)
re += " " + "0" + String.valueOf(mycd.get(Calendar.HOUR));
else
re += " " + String.valueOf(mycd.get(Calendar.HOUR));
if (mycd.get(Calendar.MINUTE) < 10)
re += ":0" + String.valueOf(mycd.get(Calendar.MINUTE));
else
re += ":" + String.valueOf(mycd.get(Calendar.MINUTE));
if (mycd.get(Calendar.SECOND) < 10)
re += ":0" + String.valueOf(mycd.get(Calendar.SECOND));
else
re += ":" + String.valueOf(mycd.get(Calendar.SECOND));
return re;
}
/** 通过给定的年、月、日 设置Calendar对象 * */
public DateUtil(String Year, String Month, String Day) {
try {
mycd.set(Integer.parseInt(Year), Integer.parseInt(Month) - 1,
Integer.parseInt(Day));
} catch (Exception e) {
System.out.println(e.getMessage());
}
}
public DateUtil(Date nd) {
mycd.setTime(nd);
this.setdate();
}
/** 通过给定的年、月、日 设置Calendar对象 * */
public DateUtil(int inty, int intm, int intd) {
mycd.set(inty, intm - 1, intd);
this.setdate();
}
/** 日期加nday天后，从新设置系统当前时间 * */
public void addDay(int nday) {
mycd.set(year, month - 1, date + nday);
setdate();
}
/** 日期加nday天后，从新设置系统当前时间 * */
public void addDay(String nday) {
addDay(Integer.parseInt(nday));
}
/** 日期加nmonth月后，从新设置系统当前时间 * */
public void addMonth(int nmonth) {
mycd.set(year, month + nmonth - 1, date);
this.setdate();
}
/** 日期加nmonth月后，从新设置系统当前时间 * */
public void addMonth(String nmonth) {
addMonth(Integer.parseInt(nmonth));
}
/** 日期加nyear年后，从新设置系统当前时间 * */
public void addYear(int nyear) {
mycd.set(year + nyear, month - 1, date);
this.setdate();
}
/** 日期加nyear年后，从新设置系统当前时间 * */
public void addYear(String nyear) {
addYear(Integer.parseInt(nyear));
}
/** 取得两个日期的相隔天数 * */
public static int dayDiff(DateUtil a, DateUtil b) {
int n = 0;
long temptime = b.getTime() - a.getTime();
temptime /= 24 * 3600 * 1000;
return Integer.parseInt(String.valueOf(temptime));
}
/** 取得两个日期的相隔的月数 * */
public static int yearDiff(DateUtil a, DateUtil b) {
return (b.getYear() - a.getYear());
}
/** 取得两个日期的相隔的月数 * */
public static int monthDiff(DateUtil a, DateUtil b) {
int n = 0;
n = yearDiff(a, b);
n = n * 12 + (b.getMonth() - a.getMonth());
return n;
}
/** 取得两个日期的相隔天数 * */
public static int getDays(Date sd, Date ed) {
return (int)((ed.getTime() - sd.getTime()) / (3600 * 24 * 1000));
}
/***************************************************************************
* 取得yyyymm,参数一：yyyymm,参数二：number 得到减去月份的日期
**************************************************************************/
public static String getYearMonth(String str, int num) {
Calendar mycdar = Calendar.getInstance();
int yearSub = Integer.parseInt(str.substring(0, 4));
int monthSub = Integer.parseInt(str.substring(4, 6)) - 1;
mycdar.set(yearSub, monthSub - num, 1);
// 月处理
String monthStr = "";
monthSub = mycdar.get(mycdar.MONTH) + 1;
if (monthSub < 10)
monthStr = "0" + String.valueOf(monthSub);
else
monthStr = String.valueOf(monthSub);
return String.valueOf(mycdar.get(mycdar.YEAR)) + monthStr;
}
public static String getTime(String s) {
if (s == null || s.equals(""))
return "";
String s1 = "";
try {
SimpleDateFormat simpledateformat = new SimpleDateFormat(s);
s1 = simpledateformat.format(Calendar.getInstance().getTime());
} catch (Exception exception) {
System.out.println(Calendar.getInstance().toString()
+ "cannot format time [function:getTime(String)]");
exception.printStackTrace();
}
return s1;
}
/** 将String 转换操作，将sDt替换为Timestamp型的日期型 **/
public static java.sql.Timestamp getDateTime ( String sDt )
{
try
{
return java.sql.Timestamp.valueOf (sDt) ; //sDt
// format:yyyy-mm-dd
// hh:mm:ss.fffffffff
} catch (IllegalArgumentException iae)
{
sDt = sDt + " 00:00:00" ;
try
{
return java.sql.Timestamp.valueOf ( sDt ) ;
} catch (Exception e)
{
return null ;
}
}
}
/**
* String转成java.util.Date对象
*
* @author zhangg
* @param strDate
* 时间字符串
* @param pattern
* 规则 例如："yyyy-MM-dd hh:mm:ss"
* @return java.util.Date Date对象
* @see java.text.SimpleDateFormat#parse(String)
* @throws ParseException
*/
public static java.util.Date string2Date(String strDate, String pattern)
throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat(pattern);
return sdf.parse(strDate);
}
/**
* java.util.Date转成String对象
*
* @author zhangg
* @param date
* java.util.Date对象
* @param pattern
* 规则 例如："yyyy-MM-dd hh:mm:ss"
* @see java.text.SimpleDateFormat#format(Date)
* @return String 转换后的时间
*/
public static String date2String(java.util.Date date, String pattern) {
SimpleDateFormat sdf = new SimpleDateFormat(pattern);
return sdf.format(date);
}
/**
* String转成java.sql.Date对象
*
* @author zhangg
* @param strDate
* 时间字符串
* @param pattern
* 规则 例如："yyyy-MM-dd hh:mm:ss"
* @return java.sql.Date Date对象
* @see java.text.SimpleDateFormat#parse(String)
* @throws ParseException
*/
public static java.sql.Date string2SqlDate(String strDate, String pattern)
throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat(pattern);
java.util.Date date = sdf.parse(strDate);
return new java.sql.Date(date.getTime());
}
/**
* java.sql.Date对象转成String
*
* @author zhangg
* @param date
* java.sql.Date对象
* @param pattern
* 规则 例如："yyyy-MM-dd hh:mm:ss"
* @see java.text.SimpleDateFormat#format(Date)
* @return String 转换后的时间
*/
public static String sqlDate2String(java.sql.Date date, String pattern) {
SimpleDateFormat sdf = new SimpleDateFormat(pattern);
return sdf.format(date);
}
/**
* 获取返回类型为Timestamp的当前时间
*
* @author 李银辉
* @return Timestamp 当前时间
*/
public static Timestamp getCurrentTime() {
Timestamp t = new Timestamp(System.currentTimeMillis());
return t;
}
private static String [] CHN_NUM = {"零","一","二","三","四","五","六","七","八","九","十","十一","十二"};
/**
* 显示中文年月
* @return String
* @author sw
* 2009-10-26
*/
public static String getCHNYearMonth() {
StringBuilder str = new StringBuilder(20);
String year = Calendar.getInstance().get(Calendar.YEAR) + "";
int month = Calendar.getInstance().get(Calendar.MONTH) + 1;
for(int i: year.getBytes())
str.append(CHN_NUM[i-48]);
str.append("年");
str.append(CHN_NUM[month]).append("月");
return str.toString();
}
/**
* @函数名称：toDay
* @功能描述： 获得格式化后的日期
* @return： 格式化后的日期
* @exception:
* @throws SQLException
*/
public static String toDay() {
GregorianCalendar thisday = new GregorianCalendar();
Date d = thisday.getTime();
DateFormat df = DateFormat.getDateInstance();
String s = df.format(d);
return s;
}
/** 获取当前时间之前后者之后的日期 (传-1 获取前天的时间)
* @param day
* @return
*/
public static java.util.Date getOtherDate(int offset){
Calendar c = Calendar.getInstance();
c.add(c.DATE, offset);
java.util.Date date = c.getTime();
return date;
}
public static java.util.Date add(java.util.Date date,int amount){
java.util.Calendar c=java.util.Calendar.getInstance();
c.setTime(date);
c.add(Calendar.DAY_OF_MONTH,amount);
return c.getTime();
}
/**
* 把字符串日期转换为日期对象
* @param date
* @return
*/
public static Date fomateDate(String date){
Date d = null;
if(date != null && date.trim().length() > 0){
try {
d = DateFormat.getDateInstance().parse(date);
} catch (ParseException e) {
logger.error("将字符串转换为日期出错",e);
}
}
return d ;
}
public static void main(String[] args) {
System.out.println(DateUtil.add(DateUtil.fomateDate("2009-09-09"), 1));
}
}
java Date 处理
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