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package com.nis.nmsclient.util;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.apache.log4j.Logger;
public class DateUtil {
static Logger logger = Logger.getLogger(DateUtil.class);
/**
* 处理日期时，用到参数。格式24小时制yyyy-MM-dd HH:mm:ss
*/
public static final SimpleDateFormat YYYY_MM_DD_HH24_MM_SS = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss");
/**
* 处理日期时，用到参数。格式24小时制yyyyMMddHHmmss
*/
public static final SimpleDateFormat YYYYMMDDHH24MMSS = new SimpleDateFormat(
"yyyyMMddHHmmss");
/**
* 处理日期时，用到参数。格式为yyyy-MM-dd
*/
public static final SimpleDateFormat YYYY_MM_DD = new SimpleDateFormat(
"yyyy-MM-dd");
/**
* 处理日期时，用到参数。格式为yyyyMMdd
*/
public static final SimpleDateFormat YYYYMMDD = new SimpleDateFormat(
"yyyyMMdd");
/**
* 获得当前日期
*
* @return
*/
public static String getCurrentDate(SimpleDateFormat sf) {
if(sf==null){
sf = YYYY_MM_DD;
}
return sf.format(new Date());
}
/**
* 获得某日期的指定格式的字符串
* @param sf
* @param date
* @return
*/
public static String getStingDate(SimpleDateFormat sf, Date date) {
if(date==null){
date = new Date();
}
if(sf==null){
sf = YYYY_MM_DD;
}
return sf.format(date);
}
public static long getDaysFromBeginToEnd(SimpleDateFormat dateFormat,
String begin, String end) {
Date beginD = null;
Date endD = null;
long days = 0;
try {
if (begin != null && !"".equals(begin)) {
beginD = dateFormat.parse(begin);
} else {
beginD = new Date();
}
if (end != null && !"".equals(end)) {
endD = dateFormat.parse(end);
} else {
endD = new Date();
}
days = getDaysFromBeginToEnd(beginD, endD);
} catch (ParseException e) {
logger.error(Utils.printExceptionStack(e));
return days;
}
return days;
}
public static long getDaysFromBeginToEnd(Date begin, Date end) {
long days = 0;
if (begin != null && end != null) {
days = getDaysFromBeginToEnd(begin.getTime(), end.getTime());
}
return days;
}
public static long getDaysFromBeginToEnd(long begin, long end) {
return (end - begin) / (24 * 60 * 60 * 1000);
}
public static long getMinutesFromBeginToEnd(SimpleDateFormat dateFormat,
String begin, String end) {
Date beginD = null;
Date endD = null;
long days = 0;
try {
if (begin != null && !"".equals(begin)) {
beginD = dateFormat.parse(begin);
} else {
beginD = new Date();
}
if (end != null && !"".equals(end)) {
endD = dateFormat.parse(end);
} else {
endD = new Date();
}
days = getMinutesFromBeginToEnd(beginD, endD);
} catch (ParseException e) {
logger.error(Utils.printExceptionStack(e));
return days;
}
return days;
}
public static long getMinutesFromBeginToEnd(Date begin, Date end) {
long days = 0;
if (begin != null && end != null) {
days = getMinutesFromBeginToEnd(begin.getTime(), end.getTime());
}
return days;
}
public static long getMinutesFromBeginToEnd(long begin, long end) {
return (end - begin) / (60 * 1000);
}
}
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