public class DateUtil {
/**
* 按照默认formatStr的格式，转化dateTimeStr为Date类型 dateTimeStr必须是formatStr的形式
* @param dateTimeStr
* @param formatStr
* @return
*/
public static Date getDate(String dateTimeStr, String formatStr) {
try {
if (dateTimeStr == null || dateTimeStr.equals("")) {
return null;
}
DateFormat sdf = new SimpleDateFormat(formatStr);
java.util.Date d = sdf.parse(dateTimeStr);
return d;
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
/**
* 将YYYYMMDD转换成Date日期
* @param date
* @return
* @throws BusinessException
*/
public static Date transferDate(String date) throws Exception {
if (date == null || date.length() < 1)
return null;
if (date.length() != 8)
throw new Exception("日期格式错误");
String con = "-";
String yyyy = date.substring(0, 4);
String mm = date.substring(4, 6);
String dd = date.substring(6, 8);
int month = Integer.parseInt(mm);
int day = Integer.parseInt(dd);
if (month < 1 || month > 12 || day < 1 || day > 31)
throw new Exception("日期格式错误");
String str = yyyy + con + mm + con + dd;
return DateUtil.getDate(str, "yyyy-MM-dd");
}
/**
* 将YYYY－MM－DD日期转换成yyyymmdd格式字符串
* @param date
* @return
*/
public static String getYYYYMMDDDate(Date date) {
if (date == null)
return null;
String yyyy = getYear(date) + "";
String mm = getMonth(date) + "";
String dd = getDay(date) + "";
mm = rightAlign(mm, 2, "0");
dd = rightAlign(dd, 2, "0");
return yyyy + mm + dd;
}
/**
* 将YYYY－MM－DD日期转换成YYYYMMDDHHMMSS格式字符串
* @param date
* @return
*/
public static String getYYYYMMDDHHMMSSDate(Date date) {
if (date == null)
return null;
String yyyy = getYear(date) + "";
String mm = getMonth(date) + "";
String dd = getDay(date) + "";
String hh = getHour(date) + "";
String min = getMin(date) + "";
String ss = getSecond(date) + "";
mm = rightAlign(mm, 2, "0");
dd = rightAlign(dd, 2, "0");
hh = rightAlign(hh, 2, "0");
min = rightAlign(min, 2, "0");
ss = rightAlign(ss, 2, "0");
return yyyy + mm + dd + hh + min + ss;
}
/**
* 将YYYY－MM－DD日期转换成yyyymmdd格式字符串
*
* @param date
* @return
*/
public static String getYYYYMMDDDate(String date) {
return getYYYYMMDDDate(getDate(date, "yyyy-MM-dd"));
}
/**
* 将MM－DD－YYYY日期转换成yyyymmdd格式字符串
*
* @param date
* @return
*/
public static String getYYYYMMDDDate1(String date) {
String[] dt=date.split("/");
return dt[2]+(dt[0].length()>1?dt[0]:"0"+dt[0])+(dt[1].length()>1?dt[1]:"0"+dt[1]);
}
/**
* 将Date转换成formatStr格式的字符串
* @param date
* @param formatStr
* @return
*/
public static String dateToDateString(Date date, String formatStr) {
DateFormat df = new SimpleDateFormat(formatStr);
return df.format(date);
}
/**
* 返回一个formatStr格式的日期时间字符串中的HH:mm:ss
* @param dateTime
* @param formatStr
* @return
*/
public static String getTimeString(String dateTime, String formatStr) {
Date d = getDate(dateTime, formatStr);
String s = dateToDateString(d,"yyyy-MM-dd HH:mm:ss");
return s.substring("yyyy-MM-dd HH:mm:ss".indexOf('H'));
}
/**
* 获取当前日期yyyy-MM-dd的形式
*
* @return
*/
public static String getCurDate() {
return dateToDateString(Calendar.getInstance().getTime(),"yyyy-MM-dd");
}
/**
* 获取当前日期yyyy年MM月dd日的形式
* @return
*/
public static String getCurZhCNDate() {
return dateToDateString(new Date(), "yyyy年MM月dd日");
}
/**
* 获取当前日期时间yyyy-MM-dd HH:mm:ss的形式
*
* @return
*/
public static String getCurDateTime() {
return dateToDateString(new Date(), "yyyy-MM-dd HH:mm:ss");
}
/**
* 获取当前日期时间yyyy年MM月dd日HH时mm分ss秒的形式
*
* @return
*/
public static String getCurZhCNDateTime() {
return dateToDateString(new Date(), "yyyy年MM月dd日HH时mm分ss秒");
}
/**
* 获取日期d的days天后的一个Date
* @param d
* @param days
* @return
*/
public static Date getInternalDateByDay(Date d, int days) {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
now.add(Calendar.DATE, days);
return now.getTime();
}
/**
*
* @param d
* @param months
* @return
*/
public static Date getInternalDateByMon(Date d, int months) {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
now.add(Calendar.MONTH, months);
return now.getTime();
}
/**
*
* @param d
* @param years
* @return
*/
public static Date getInternalDateByYear(Date d, int years) {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
now.add(Calendar.YEAR, years);
return now.getTime();
}
/**
*
* @param d
* @param sec
* @return
*/
public static Date getInternalDateBySec(Date d, int sec) {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
now.add(Calendar.SECOND, sec);
return now.getTime();
}
/**
*
* @param d
* @param min
* @return
*/
public static Date getInternalDateByMin(Date d, int min) {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
now.add(Calendar.MINUTE, min);
return now.getTime();
}
/**
*
* @param d
* @param hours
* @return
*/
public static Date getInternalDateByHour(Date d, int hours) {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
now.add(Calendar.HOUR_OF_DAY, hours);
return now.getTime();
}
/**
* 根据一个日期字符串，返回日期格式，目前支持4种 如果都不是，则返回null
*
* @param DateString
* @return
*/
public static String getFormateStr(String DateString) {
String patternStr1 = "[0-9]{4}-[0-9]{1,2}-[0-9]{1,2}"; // "yyyy-MM-dd"
String patternStr2 = "[0-9]{4}-[0-9]{1,2}-[0-9]{1,2}\\s[0-9]{1,2}:[0-9]{1,2}:[0-9]{1,2}"; // "yyyy-MM-dd
String patternStr3 = "[0-9]{4}年[0-9]{1,2}月[0-9]{1,2}日";// "yyyy年MM月dd日"
String patternStr4 = "[0-9]{4}年[0-9]{1,2}月[0-9]{1,2}日[0-9]{1,2}时[0-9]{1,2}分[0-9]{1,2}秒";// "yyyy年MM月dd日HH时mm分ss秒"
Pattern p = Pattern.compile(patternStr1);
Matcher m = p.matcher(DateString);
boolean b = m.matches();
if (b)
return "yyyy-MM-dd";
p = Pattern.compile(patternStr2);
m = p.matcher(DateString);
b = m.matches();
if (b)
return "yyyy-MM-dd HH:mm:ss";
p = Pattern.compile(patternStr3);
m = p.matcher(DateString);
b = m.matches();
if (b)
return "yyyy年MM月dd日";
p = Pattern.compile(patternStr4);
m = p.matcher(DateString);
b = m.matches();
if (b)
return "yyyy年MM月dd日HH时mm分ss秒";
return null;
}
/**
* 将一个"yyyy-MM-dd HH:mm:ss"字符串，转换成"yyyy年MM月dd日HH时mm分ss秒"的字符串
* @param dateStr
* @return
*/
public static String getZhCNDateTime(String dateStr) {
Date d = getDate(dateStr,"yyyy-MM-dd HH:mm:ss");
return dateToDateString(d, "yyyy年MM月dd日HH时mm分ss秒");
}
/**
* 将一个"yyyy-MM-dd"字符串，转换成"yyyy年MM月dd日"的字符串
*
* @param dateStr
* @return
*/
public static String getZhCNDate(String dateStr) {
Date d = getDate(dateStr,"yyyy-MM-dd");
return dateToDateString(d, "yyyy年MM月dd日");
}
/**
* 将dateStr从fmtFrom转换到fmtTo的格式
*
* @param dateStr
* @param fmtFrom
* @param fmtTo
* @return
*/
public static String getDateStr(String dateStr, String fmtFrom, String fmtTo) {
Date d = getDate(dateStr, fmtFrom);
return dateToDateString(d, fmtTo);
}
/**
* 比较两个"yyyy-MM-dd HH:mm:ss"格式的日期，之间相差多少毫秒,time2-time1
*
* @param time1
* @param time2
* @return
*/
public static long compareDateStr(String time1, String time2) {
Date d1 = getDate(time1,"yyyy-MM-dd HH:mm:ss");
Date d2 = getDate(time2,"yyyy-MM-dd HH:mm:ss");
return d2.getTime() - d1.getTime();
}
/**
* 将小时数换算成返回以毫秒为单位的时间
* @param hours
* @return
*/
public static long getMicroSec(BigDecimal hours) {
BigDecimal bd;
bd = hours.multiply(new BigDecimal(3600 * 1000));
return bd.longValue();
}
/**
* 获取Date中的分钟
* @param d
* @return
*/
public static int getMin(Date d) {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
return now.get(Calendar.MINUTE);
}
/**
* 获取Date中的小时(24小时)
* @param d
* @return
*/
public static int getHour(Date d) {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
return now.get(Calendar.HOUR_OF_DAY);
}
/**
* 获取Date中的秒
* @param d
* @return
*/
public static int getSecond(Date d) {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
return now.get(Calendar.SECOND);
}
/**
* 获取xxxx-xx-xx的日
* @param d
* @return
*/
public static int getDay(Date d) {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
return now.get(Calendar.DAY_OF_MONTH);
}
/**
* 获取月份，1-12月
*
* @param d
* @return
*/
public static int getMonth(Date d) {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
return now.get(Calendar.MONTH) + 1;
}
/**
* 获取19xx,20xx形式的年
* @param d
* @return
*/
public static int getYear(Date d) {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
return now.get(Calendar.YEAR);
}
/**
* 得到d的上个月的年份+月份,如201005
* @param d
* @return
*/
public static String getYearMonthOfLastMon(Date d) {
Date newdate = getInternalDateByMon(d, -1);
String year = String.valueOf(getYear(newdate));
String month = String.valueOf(getMonth(newdate));
return year + month;
}
/**
* 得到当前日期的年和月如200509
* @return String
*/
public static String getCurYearMonth() {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
String DATE_FORMAT = "yyyyMM";
java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat(DATE_FORMAT);
sdf.setTimeZone(TimeZone.getDefault());
return (sdf.format(now.getTime()));
}
/**
*
* @param year
* @param month
* @return
*/
public static Date getNextMonth(String year, String month) {
String datestr = year + "-" + month + "-01";
Date date = getDate(datestr, "yyyy-MM-dd");
return getInternalDateByMon(date, 1);
}
/**
*
* @param year
* @param month
* @return
*/
public static Date getLastMonth(String year, String month) {
String datestr = year + "-" + month + "-01";
Date date = getDate(datestr, "yyyy-MM-dd");
return getInternalDateByMon(date, -1);
}
/**
* @function:返回格式'yyyy-MM-dd'的系统当前日期。
* @retinfo:String，格式为'yyyy-MM-dd'的系统当前日期。
* @throws java.lang.Exception
*/
public static String getSystemDate() throws Exception {
Date dateSystem = new Date(System.currentTimeMillis());
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
return sdf.format(dateSystem);
}
/**
* @function:返回格式'yyyy-MM-dd HH:mm:ss.SSS'的系统当前日期。
* @retinfo:String，格式为'yyyy-MM-dd HH:mm:ss.SSS'的系统当前日期。
* @throws java.lang.Exception
*/
public static String getSystemDateTime() throws Exception {
Date dateSystem = new Date(System.currentTimeMillis());
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
return sdf.format(dateSystem);
}
/**
* 得到日期d，按照页面日期控件格式，如"2001-3-16"
*
* @param d
* @return
*/
public static String getSingleNumDate(Date d) {
return dateToDateString(d, "yyyy-MM-dd");
}
/**
* 得到d半年前的日期,"yyyy-MM-dd"
*
* @param d
* @return
*/
public static String getHalfYearBeforeStr(Date d) {
return dateToDateString(getInternalDateByMon(d, -6), "yyyy-MM-dd");
}
/**
* 得到当前日期D的月底的前/后若干天的时间,<0表示之前，>0表示之后
*
* @param d
* @param days
* @return
*/
public static String getInternalDateByLastDay(Date d, int days) {
return dateToDateString(getInternalDateByDay(d, days), "yyyy-MM-dd");
}
/**
* 日期中的年月日相加
* @param field int 需要加的字段 年 月 日
* @param amount int 加多少
* @return String
*/
public static String addDate(int field, int amount) {
String dstr = addDate(null,field,amount);
return dstr;
}
public static String addDate(String datastr,int field, int amount) {
int temp = 0;
if (field == 1) {
temp = Calendar.YEAR;
}
if (field == 2) {
temp = Calendar.MONTH;
}
if (field == 3) {
temp = Calendar.DATE;
}
String dstr = "";
Calendar cal = null ;
try {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
if (!StringUtils.isBlank(datastr)) {
Date d = getDate(datastr, "yyyy-MM-dd");
cal = Calendar.getInstance();
cal.setTime(d);
}else{
cal = Calendar.getInstance(TimeZone.getDefault());
}
cal.add(temp, amount);
dstr = sdf.format(cal.getTime());
return dstr;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* 日期转字符串
*
* @param date
* 日期
* @param pattern
* 格式
* @return
*/
public static String dateToString(Date date, String pattern) {
if (date != null) {
SimpleDateFormat sdf = new SimpleDateFormat(pattern);
return sdf.format(date);
}
return "";
}
/**
* 日期转字符串
*
* @param date
* @return
*/
public static String dateToString(Date date) {
return dateToString(date, "yyyy-MM-dd hh:mm:ss");
}
/**
* 获得系统当前月份的天数
*
* @return
*/
public static int getCurentMonthDay() {
Date date = Calendar.getInstance().getTime();
return getMonthDay(date);
}
/**
* 获得指定日期月份的天数
* @param date
* @return
*/
public static int getMonthDay(Date date) {
Calendar c = Calendar.getInstance();
c.setTime(date);
return c.getActualMaximum(Calendar.DAY_OF_MONTH);
}
/**
* 获得指定日期月份的天数 yyyy-mm-dd
* @param date
* @return
*/
public static int getMonthDay(String date) {
Date strDate = getDate(date, "yyyy-MM-dd");
return getMonthDay(strDate);
}
/**
*
* @param cal
* @return
*/
public static String getStringDate(Calendar cal) {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
return format.format(cal.getTime());
}
/**
*
* @param source
* @param length
* @param fit
* @return
*/
public static String rightAlign(String source, int length, String fit) {
String result = "";
int div = length - source.length();
String tmp = "";
if (div > 0) {
for (int i = 0; i < div; i++) {
tmp += fit;
}
}
result = tmp + source;
return result;
}
/**
* 转换日期
* @param date
* @return
*/
public static Calendar getCalendar(String date,String formatStr){
SimpleDateFormat sdf = new SimpleDateFormat(formatStr);
Calendar cld = Calendar.getInstance();
try {
cld.setTime(sdf.parse(date));
} catch (ParseException e) {
e.printStackTrace();
}
return cld;
}
/**
* 转换日期
* @param date
* @return
*/
public static String calendarToString(Calendar cal,String formatStr){
if(cal==null){
return "";
}
SimpleDateFormat sdf = new SimpleDateFormat(formatStr);
String dateStr="";
try {
dateStr = sdf.format(cal.getTime());
} catch (Exception e) {
e.printStackTrace();
}
return dateStr;
}
/**
* 在dto对象中把int转为Date
* @param intDate
* @param formatStr
* @return
* @throws ParseException
*/
public static Date getDateFormInt(int intDate , String formatStr) throws ParseException{
if(intDate == 0){ //该日期为null
return null;
}
String dateStr = String.valueOf(intDate);
if(formatStr .equals("yyyy-MM-dd") && dateStr.length()>=8){
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
String dd = dateStr.substring(6,8);
return format.parse(yyyy+"-"+MM+"-"+dd);
}else if(formatStr .equals("MM/dd/yyyy") && dateStr.length()>=8){
SimpleDateFormat format = new SimpleDateFormat("MM/dd/yyyy");
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
String dd = dateStr.substring(6,8);
return format.parse(MM+"/"+dd+"/"+yyyy);
}
return null;
}
/**
* 把yyyyMMdd格式的整型日期转换为Date类型的日期
* @author hechuan
* @param dateInt
* @return
*/
public static Date getYYYYMMddDateFromInt(int dateInt){
if(dateInt==0)return null;
return DateUtil.getDate(dateInt+"", "yyyyMMdd");
}
/**
* 在dto对象中把int转为字符窜格式的日期
* @param intDate 格式为 ：yyyyMMdd 的数字串
* @param formatStr
* @return
* @throws ParseException
*/
public static String getDateStringFormInt(int intDate , String formatStr) throws ParseException{
if(intDate == 0){ //该日期为null
return "";
}
String dateStr = String.valueOf(intDate);
if(formatStr .equals("yyyy-MM-dd") && dateStr.length()>=8){
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
String dd = dateStr.substring(6,8);
return yyyy+"-"+MM+"-"+dd;
}else if(formatStr .equals("yyyy/MM/dd") && dateStr.length()>=8){
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
String dd = dateStr.substring(6,8);
return yyyy+"/"+MM+"/"+dd;
}else if(formatStr .equals("yyyy-MM") && dateStr.length()>=6){
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
return yyyy+"-"+MM;
}else if(formatStr .equals("yyyy年MM月dd日") && dateStr.length()>=8){
return DateUtil.getDateStr(intDate+"", "yyyyMMdd", formatStr);
}else if(formatStr .equals("dd/MM/yyyy") && dateStr.length()>=8){
SimpleDateFormat format = new SimpleDateFormat("dd/MM/yyyy");
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
String dd = dateStr.substring(6,8);
return dd+"/"+MM+"/"+yyyy;
}else if(formatStr .equals("MM/dd/yyyy") && dateStr.length()>=8){
SimpleDateFormat format = new SimpleDateFormat("MM/dd/yyyy");
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
String dd = dateStr.substring(6,8);
return MM+"/"+dd+"/"+yyyy;
}else if(formatStr .equals("yyyy年MM月") && dateStr.length()>=6){
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
return yyyy+"年"+MM+"月";
}
//2011-08-25hechuan修改
else if(formatStr .equals("MM/yyyy") && dateStr.length()>=6){
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
return MM+"/"+yyyy;
}
return null;
}
/**
* 在dto对象中把long转为字符窜格式的日期
* @param longDate 格式为 ：yyyyMMdd HH:mm:ss 的long
* @param formatStr
* @return
* @throws ParseException
*/
public static String getDateStringFormLong(Long longDate , String formatStr) throws ParseException{
if(longDate == 0){ //该日期为null
return "";
}
String dateStr = String.valueOf(longDate);
if(formatStr .equals("yyyy-MM-dd HH:mm:ss") && dateStr.length()>=14){
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
String dd = dateStr.substring(6,8);
String HH = dateStr.substring(8,10);
String mm = dateStr.substring(10,12);
String ss = dateStr.substring(12,14);
return yyyy +"-"+ MM +"-"+ dd +" "+ HH +":"+ mm +":"+ ss;
}else if(formatStr .equals("MM/dd/yyyyHH:mm:ss") && dateStr.length()>=14){
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
String dd = dateStr.substring(6,8);
String HH = dateStr.substring(8,10);
String mm = dateStr.substring(10,12);
String ss = dateStr.substring(12,14);
return MM +"/"+yyyy+"/"+ dd + HH +":"+ mm +":"+ ss;
}else if(formatStr .equals("MM/dd/yyyy HH:mm:ss") && dateStr.length()>=14){
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
String dd = dateStr.substring(6,8);
String HH = dateStr.substring(8,10);
String mm = dateStr.substring(10,12);
String ss = dateStr.substring(12,14);
return MM +"/"+ dd +"/"+yyyy+" "+ HH +":"+ mm +":"+ ss;
}else if(formatStr .equals("yyyy-MM-dd") && dateStr.length()>=8){
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
String dd = dateStr.substring(6,8);
return yyyy+"-"+MM+"-"+dd;
}else if(formatStr .equals("yyyy/MM/dd") && dateStr.length()>=8){
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
String dd = dateStr.substring(6,8);
return yyyy+"/"+MM+"/"+dd;
}
//2011-08-25hechuan修改
else if(formatStr .equals("MM/dd/yyyy") && dateStr.length()>=8){
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
String dd = dateStr.substring(6,8);
return MM+"/"+dd+"/"+yyyy;
}else if(formatStr .equals("yyyy-MM") && dateStr.length()>=6){
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
return yyyy+"-"+MM;
}
//2011-08-25hechuan修改
else if(formatStr .equals("MM/yyyy") && dateStr.length()>=6){
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
return MM+"/"+yyyy;
}else if(formatStr .equals("yyyy-MM-dd HH:mm:ss SSS") && dateStr.length()>=17){
return DateUtil.getDateStr(longDate+"", "yyyyMMddhhmmssSSS", formatStr);
}else if(formatStr .equals("HH:mm:ss") && dateStr.length()>=14){
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String HH = dateStr.substring(8,10);
String mm = dateStr.substring(10,12);
String ss = dateStr.substring(12,14);
return HH+":"+mm+":"+ss;
}else if(formatStr .equals("yyyy年MM月dd日 hh时") && dateStr.length()>=10){
return DateUtil.getDateStr(longDate+"", "yyyyMMddhhmmssSSS", formatStr);
}else if(formatStr .equals("yyyy-MM-dd HH") && dateStr.length()>=10){
return DateUtil.getDateStr(longDate+"", "yyyyMMddhhmmssSSS", formatStr);
}
//2011-08-25hechuan修改
else if(formatStr .equals("MM/dd/yyyy HH") && dateStr.length()>=10){
return DateUtil.getDateStr(longDate+"", "yyyyMMddhhmmssSSS", formatStr);
}
return null;
}
/**
* 根据输入返回年月
* @param input
* @return
*/
public static String getYearMonth(String input){
String[] tmp = input.split("-");
String year = tmp[0];
String month = tmp[1];
if(month.length()==1 && Integer.parseInt(month) <= 9){
month = "0"+month;
}
return year+month;
}
/**
*
* @param input
* @return
*/
public static String getChinesDateStr(Object input){
String dateStr="";
String a = input.getClass().getName();
if(input.getClass().getName().indexOf("java.lang.Integer") != -1){
dateStr = String.valueOf(input);
}else{
dateStr = input.toString();
}
if (dateStr.length() == 6){
return dateStr.substring(0,4)+"年"+dateStr.substring(4,6)+"月";
}else if(dateStr.length() == 8){
return dateStr.substring(0,4)+"年"+dateStr.substring(4,6)+"月"+dateStr.substring(6,8)+"日";
}
return "";
}
/**日期比较
* @param DATE1
* @param DATE2
* @return
*/
public static int compare_date(String DATE1, String DATE2) {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
try {
Date dt1 = df.parse(DATE1);
Date dt2 = df.parse(DATE2);
if (dt1.getTime() > dt2.getTime()) {
return 1;
} else if (dt1.getTime() < dt2.getTime()) {
return -1;
} else {
return 0;
}
} catch (Exception exception) {
exception.printStackTrace();
}
return 0;
}
/**
* 根据当前时间获取时间控件开始时间(当前财年开始月份)
* @return
*/
public static String getDateFildBegin(){
String beginMonth = "";
Date todayDate=DateUtil.getDate(DateUtil.getCurDate(), "yyyy-MM");
int bYYYY = DateUtil.getYear(todayDate);
int bMM = DateUtil.getMonth(todayDate);
int bDD = DateUtil.getDay(todayDate);
if(bMM <=8) {
bYYYY = bYYYY-1;
beginMonth= bYYYY + "-09";
}else{
beginMonth= bYYYY + "-09";
}
return beginMonth;
}
/**
* 根据当前时间获取时间控件结束时间(当前月份)
* @return
*/
public static String getDateFildEnd(){
String endMonth = "";
Date todayDate = DateUtil.getDate(DateUtil.getCurDate(), "yyyy-MM");
int eYYYY = DateUtil.getYear(todayDate);
int eMM = DateUtil.getMonth(todayDate);
if(eMM <=9) {
endMonth= eYYYY + "-0"+eMM;
}else{
endMonth= eYYYY +"-"+ eMM;
}
return endMonth;
}
/**
* 退货查询的开始月份默认值(当前月份的前3个月)
* @return
*/
public static String getRtrDateFildBegin(){
String beginMonth = "";
Date todayDate = DateUtil.getDate(DateUtil.getCurDate(), "yyyy-MM");
int bYYYY = DateUtil.getYear(todayDate);
int bMM = DateUtil.getMonth(todayDate);
if( (bMM-2)< 0 || (bMM-2) ==0 ){ //若果不输入,查询区间默认为当前月份的前三个月
bYYYY = bYYYY-1;
bMM = (bMM-2)+12;
beginMonth = bYYYY+"-"+bMM;
}else if ((bMM-2)>9){
beginMonth = bYYYY+"-"+(bMM-2);
}else{
beginMonth = bYYYY+"-0"+(bMM-2);
}
return beginMonth;
}
/**
* 把string的date 转为相应格式
* @param dateStr
* @param formatStr
* @return
*/
public static String changeDateStr(String dateStr ,String formatStr){
if(formatStr .equals("yyyy-MM-dd HH:mm:ss") && dateStr.length()>=14){
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
String dd = dateStr.substring(6,8);
String HH = dateStr.substring(8,10);
String mm = dateStr.substring(10,12);
String ss = dateStr.substring(12,14);
return yyyy +"-"+ MM +"-"+ dd +" "+ HH +":"+ mm +":"+ ss;
}else if(formatStr .equals("yyyy-MM-dd") && dateStr.length()>=8){
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
String dd = dateStr.substring(6,8);
return yyyy+"-"+MM+"-"+dd;
}else if(formatStr .equals("MM/dd/yyyy") && dateStr.length()>=8){
String yyyy = dateStr.substring(0,4);
String MM = dateStr.substring(4,6);
String dd = dateStr.substring(6,8);
return MM +"/"+ dd +"/"+ yyyy;
}
return "";
}
java时间格式转换
最新推荐文章于 2024-10-15 16:57:24 发布
本文深入探讨了信息技术领域的核心概念，包括前端开发、后端开发、移动开发等细分技术领域，详细介绍了各种关键技术及其应用。从大数据开发到嵌入式硬件，从音视频基础到AI音视频处理，全方位覆盖了现代信息技术的多个方面。
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