java 日期格式化工具类
- 代码如下
代码如下
package com.dongao.project.utils;
import com.ruoyi.common.utils.StringUtils;
import org.apache.commons.lang3.time.DateFormatUtils;
import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
/**
* @Version 1.0
* @Date 2019-08-19
**/
public class DateUtils extends org.apache.commons.lang3.time.DateUtils
{
public static final String YYYY = "yyyy";
public static final String YYYY_MM = "yyyy-MM";
public static final String YYYY_MM_DD = "yyyy-MM-dd";
public static final String YYYY_MM_DD_HH_MM = "yyyyMMddHHmm";
public static final String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";
public static final String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";
public static final String MM_DD_HH_MM = "MM-dd HH:mm";
private static String[] parsePatterns = {
"yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
"yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
"yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};
/**
* 获取当前Date型日期
*
* @return Date() 当前日期
*/
public static Date getNowDate()
{
return new Date();
}
/**
* 获取当前日期, 默认格式为yyyy-MM-dd
*
* @return String
*/
public static String getDate()
{
return dateTimeNow(YYYY_MM_DD);
}
public static final String getTime()
{
return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
}
public static final String getMmTime()
{
return dateTimeNow(YYYY_MM_DD_HH_MM);
}
public static final String dateTimeNow()
{
return dateTimeNow(YYYYMMDDHHMMSS);
}
public static final String dateTimeNow(final String format)
{
return parseDateToStr(format, new Date());
}
public static final String dateTime(final Date date)
{
return parseDateToStr(YYYY_MM_DD, date);
}
public static final String parseDateToStr(final String format, final Date date)
{
return new SimpleDateFormat(format).format(date);
}
public static final Date dateTime(final String format, final String ts)
{
try
{
return new SimpleDateFormat(format).parse(ts);
}
catch (ParseException e)
{
throw new RuntimeException(e);
}
}
/**
* 日期路径 即年/月/日 如2018/08/08
*/
public static final String datePath()
{
Date now = new Date();
return DateFormatUtils.format(now, "yyyy/MM/dd");
}
/**
* 日期路径 即年/月/日 如20180808
*/
public static final String dateTime()
{
Date now = new Date();
return DateFormatUtils.format(now, "yyyyMMdd");
}
/**
* 日期型字符串转化为日期 格式
*/
public static Date parseDate(Object str)
{
if (str == null)
{
return null;
}
try
{
return parseDate(str.toString(), parsePatterns);
}
catch (ParseException e)
{
return null;
}
}
/**
* 获取服务器启动时间
*/
public static Date getServerStartDate()
{
long time = ManagementFactory.getRuntimeMXBean().getStartTime();
return new Date(time);
}
/**
* 计算两个时间差
*/
public static String getDatePoor(Date endDate, Date nowDate)
{
long nd = 1000 * 24 * 60 * 60;
long nh = 1000 * 60 * 60;
long nm = 1000 * 60;
// long ns = 1000;
// 获得两个时间的毫秒时间差异
long diff = endDate.getTime() - nowDate.getTime();
// 计算差多少天
long day = diff / nd;
// 计算差多少小时
long hour = diff % nd / nh;
// 计算差多少分钟
long min = diff % nd % nh / nm;
// 计算差多少秒//输出结果
// long sec = diff % nd % nh % nm / ns;
return day + "天" + hour + "小时" + min + "分钟";
}
public static String getFormatDate(String format,Date date) {
if (null != date) {
if (StringUtils.isEmpty(format)) {
format = YYYY_MM_DD_HH_MM_SS;
}
String dateStr = parseDateToStr(format, date);
return dateStr;
}
return "";
}
/**
* 秒转小时分
* @param second
* @return
*/
public static String getFormatTime(Long second) {
if (second != null) {
if(second < 3600) {//分
return NumFormat(second / 60) + "分";
}
if(second< 3600 * 24) {//时
return NumFormat(second/ 60 / 60) + "小时" + NumFormat(second/ 60 % 60) + "分";
}
if(second>= 3600 * 24) {//天
return NumFormat(second/ 60 / 60 /24) + "天" +NumFormat(second/ 60 / 60 % 24) + "小时" + NumFormat(second/ 60 % 60) + "分";
}
}
return "--";
}
/**
* 格式化时间
* @param sec
* @return
*/
private static String NumFormat(long sec) {
if (String.valueOf(sec).length() < 2){
return "0"+sec;
}else {
return String.valueOf(sec);
}
}
/**
* 获取当前时间前面某天或者后面某天
* @param date
* @return
*/
public static Date getOtherDay(Date date, int amount) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(Calendar.DAY_OF_MONTH,amount);
Date time = calendar.getTime();
return time;
}
/**
* 获取当前时间月日 7.13
* @param date
* @return
*/
public static String getMonthDay(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
//month从0开始
int month = calendar.get(Calendar.MONTH) + 1;
int day = calendar.get(Calendar.DAY_OF_MONTH);
return month+"."+day;
}
/**
* 获取周几
* @param date
* @return
*/
public static String getWeek(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
int weekday = calendar.get(Calendar.DAY_OF_WEEK);
String week = null;
if (weekday == 1) {
week = "周日";
} else if (weekday == 2) {
week = "周一";
} else if (weekday == 3) {
week = "周二";
} else if (weekday == 4) {
week = "周三";
} else if (weekday == 5) {
week = "周四";
} else if (weekday == 6) {
week = "周五";
} else if (weekday == 7) {
week = "周六";
}
return week;
}
/**
* 根据日期字符串获取时间
* @param str
* @return
*/
public static Date getDate(String str) {
SimpleDateFormat sdf = new SimpleDateFormat(YYYY_MM_DD);
Date parse = null;
try {
parse = sdf.parse(str);
} catch (ParseException e) {
e.printStackTrace();
}
return parse;
}
/**
* 根据日期字符串获取时间
* @param format
* @param str
* @return
*/
public static Date getDate(String format,String str) {
if (StringUtils.isEmpty(format)) {
format = YYYY_MM_DD_HH_MM_SS;
}
SimpleDateFormat sdf = new SimpleDateFormat(format);
Date parse = null;
try {
parse = sdf.parse(str);
} catch (ParseException e) {
e.printStackTrace();
}
return parse;
}
/**
* 格式化日期
* @param format
* @param date
* @return
*/
public static Date getChangeDate(String format,Date date) {
if (null != date) {
if (StringUtils.isEmpty(format)) {
format = YYYY_MM_DD_HH_MM_SS;
}
String dateStr = parseDateToStr(format, date);
Date resDate = getDate(format, dateStr);
return resDate;
}
return null;
}
/**
* 计算两个日期相差几天，不计算结束日期当天
* @param start 开始时间
* @param end 结束时间
* @return
*/
public static long getDiffDays(Date start,Date end) {
long dayNum = 0;
if (start != null && end != null) {
//格式化时间
Date startdate = getChangeDate(YYYY_MM_DD,start);
Date enddate = getChangeDate(YYYY_MM_DD,end);
//获取时间差
long subtract = enddate.getTime() - startdate.getTime();
//转换为天数
dayNum = subtract / 1000 / 60 / 60 / 24;
}
return dayNum;
}
/**
* 判断是不是本周
* @param date
* @return
*/
public static boolean isThisWeek(Date date) {
Calendar calendar = Calendar.getInstance();
int currentWeek = calendar.get(Calendar.WEEK_OF_YEAR);
calendar.setTime(date);
int dateWeek = calendar.get(Calendar.WEEK_OF_YEAR);
if (currentWeek == dateWeek) {
return true;
}
return false;
}
/**
* 判断是否是当天
* @param date
* @return
*/
public static boolean isThisDay (Date date) {
return isThisTime(date,YYYY_MM_DD);
}
/**
* 判断是否是本月
* @param date
* @return
*/
public static boolean isThisMonth (Date date) {
return isThisTime(date,YYYY_MM);
}
/**
* 判断当前时间
* @param date
* @param format
* @return
*/
private static boolean isThisTime(Date date, String format) {
SimpleDateFormat sdf = new SimpleDateFormat(format);
String dateFormat = sdf.format(date);
String nowFormat = sdf.format(new Date());
if (dateFormat.equals(nowFormat)) {
return true;
}
return false;
}
}
注： 可直接使用，如有问题欢迎交流，后续遇到好的会继续更新
