月份工具类
package com.avic.common.statics.task;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.List;
import com.avic.common.utils.DateUtil;
/**
* 获取月份工具类
* @author hw
*
*/
public class MonthUtil {
/**
* 获取当前时间月份的最后一天
*
* @param nowTime
* @return
*/
private static String getMonthLastDay(Date nowTime) {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Calendar now = Calendar.getInstance();
now.setTime(nowTime);
now.add(Calendar.DATE, -1);
String date = DateUtil.getDay(now.getTime());
Calendar calendar = Calendar.getInstance();
calendar.setTime(DateUtil.parse(date, "yyyy-MM-dd"));
calendar.add(Calendar.MONTH, 1);
calendar.set(Calendar.DATE, 1);
calendar.add(Calendar.DATE, -1);
String day_last = df.format(calendar.getTime());
StringBuffer endStr = new StringBuffer().append(day_last);
day_last = endStr.toString();
StringBuffer str = new StringBuffer().append(day_last);
return str.toString();
}
/**
* 获取当前时间月份的第一天
*
* @param nowTime
* @return
*/
private static String getMonthFirstDay(Date nowTime) {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Calendar calendar = Calendar.getInstance();
calendar.setTime(nowTime);
Date theDate = calendar.getTime();
GregorianCalendar gcLast = (GregorianCalendar) Calendar.getInstance();
gcLast.setTime(theDate);
gcLast.set(Calendar.DAY_OF_MONTH, 1);
String day_first = df.format(gcLast.getTime());
StringBuffer str = new StringBuffer().append(day_first);
return str.toString();
}
/**
* 获取指定区间的月份
*
* @param beginMonth 2018-01
* @param endMonth 2018-12
* @return
*/
private static List<String> getAppointMonths(String beginMonth, String endMonth) {
List<String> months = new ArrayList<String>();
try {
Date d1 = new SimpleDateFormat("yyyy-MM").parse(beginMonth);// 定义起始日期
Date d2 = new SimpleDateFormat("yyyy-MM").parse(endMonth);// 定义结束日期，可以去当前月也可以手动写日期
Calendar dd = Calendar.getInstance();// 定义日期实例
dd.setTime(d1);// 设置日期起始时间
while (dd.getTime().before(d2)) {// 判断是否到结束日期
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
String str = sdf.format(dd.getTime());
dd.add(Calendar.MONTH, 1);// 进行当前日期月份加1
months.add(str);
}
months.add(endMonth);
} catch (Exception e) {
System.out.println("异常" + e.getMessage());
}
return months;
}
public static void main(String[] args) {
System.out.println(getMonthFirstDay(new Date()));
System.out.println(getMonthLastDay(new Date()));
System.out.println(Arrays.asList(getAppointMonths("2018-01", "2018-12")));
}
}
控制台输出结果：
2018-11-01
2018-11-30
[[2017-01, 2017-02, 2017-03, 2017-04, 2017-05, 2017-06, 2017-07, 2017-08, 2017-09, 2017-10, 2017-11, 2017-12, 2018-01, 2018-02, 2018-03, 2018-04, 2018-05, 2018-06, 2018-07, 2018-08, 2018-09, 2018-10, 2018-11, 2018-12]]
时间工具类
package com.avic.common.utils;
import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
/**
* 时间工具类
* @author hw
*
*/
public class DateUtil {
private final static SimpleDateFormat sdfYear = new SimpleDateFormat("yyyy");
private final static SimpleDateFormat sdfDay = new SimpleDateFormat("yyyy-MM-dd");
private final static SimpleDateFormat sdfDays = new SimpleDateFormat("yyyyMMdd");
private final static SimpleDateFormat sdfTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
private final static SimpleDateFormat sdfmsTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
private final static SimpleDateFormat allTime = new SimpleDateFormat("yyyyMMddHHmmss");
/**
* 获取YYYY格式
*
* @return
*/
public static String getYear() {
return sdfYear.format(new Date());
}
/**
* 获取YYYY格式
*
* @return
*/
public static String getYear(Date date) {
return sdfYear.format(date);
}
/**
* 获取YYYY-MM-DD格式
*
* @return
*/
public static String getDay() {
return sdfDay.format(new Date());
}
/**
* 获取YYYY-MM-DD格式
*
* @return
*/
public static String getDay(Date date) {
return sdfDay.format(date);
}
/**
* 获取YYYYMMDD格式
*
* @return
*/
public static String getDays() {
return sdfDays.format(new Date());
}
/**
* 获取YYYYMMDD格式
*
* @return
*/
public static String getDays(Date date) {
return sdfDays.format(date);
}
/**
* 获取YYYY-MM-DD HH:mm:ss格式
*
* @return
*/
public static String getTime() {
return sdfTime.format(new Date());
}
/**
* 获取YYYY-MM-DD HH:mm:ss.SSS格式
*
* @return
*/
public static String getMsTime() {
return sdfmsTime.format(new Date());
}
/**
* 获取YYYYMMDDHHmmss格式
*
* @return
*/
public static String getAllTime() {
return allTime.format(new Date());
}
/**
* 获取YYYY-MM-DD HH:mm:ss格式
*
* @return
*/
public static String getTime(Date date) {
return sdfTime.format(date);
}
/**
* @Title: compareDate
* @Description:(日期比较，如果s>=e 返回true 否则返回false)
* @param s
* @param e
* @return boolean
* @throws
* @author luguosui
*/
public static boolean compareDate(String s, String e) {
if (parseDate(s) == null || parseDate(e) == null) {
return false;
}
return parseDate(s).getTime() >= parseDate(e).getTime();
}
/**
* 格式化日期
*
* @return
*/
public static Date parseDate(String date) {
try {
return sdfDay.parse(date);
} catch (ParseException e) {
e.printStackTrace();
return null;
}
}
/**
* 格式化日期
*
* @return
*/
public static Date parseTime(String date) {
try {
return sdfTime.parse(date);
} catch (ParseException e) {
e.printStackTrace();
return null;
}
}
/**
* 格式化日期
*
* @return
*/
public static Date parse(String date, String pattern) {
DateFormat fmt = new SimpleDateFormat(pattern);
try {
return fmt.parse(date);
} catch (ParseException e) {
e.printStackTrace();
return null;
}
}
/**
* 格式化日期
*
* @return
*/
public static String format(Date date, String pattern) {
DateFormat fmt = new SimpleDateFormat(pattern);
return fmt.format(date);
}
/**
* 把日期转换为Timestamp
*
* @param date
* @return
*/
public static Timestamp format(Date date) {
return new java.sql.Timestamp(date.getTime());
}
/**
* 校验日期是否合法
*
* @return
*/
public static boolean isValidDate(String s) {
try {
sdfTime.parse(s);
return true;
} catch (Exception e) {
// 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
return false;
}
}
/**
* 校验日期是否合法
*
* @return
*/
public static boolean isValidDate(String s, String pattern) {
DateFormat fmt = new SimpleDateFormat(pattern);
try {
fmt.parse(s);
return true;
} catch (Exception e) {
// 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
return false;
}
}
public static int getDiffYear(String startTime, String endTime) {
DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
try {
int years = (int) (((fmt.parse(endTime).getTime() - fmt.parse(
startTime).getTime()) / (1000 * 60 * 60 * 24)) / 365);
return years;
} catch (Exception e) {
// 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
return 0;
}
}
/**
* <li>功能描述：时间相减得到天数
*
* @param beginDateStr
* @param endDateStr
* @return long
* @author Administrator
*/
public static long getDaySub(String beginDateStr, String endDateStr) {
long day = 0;
java.text.SimpleDateFormat format = new java.text.SimpleDateFormat(
"yyyy-MM-dd");
java.util.Date beginDate = null;
java.util.Date endDate = null;
try {
beginDate = format.parse(beginDateStr);
endDate = format.parse(endDateStr);
} catch (ParseException e) {
e.printStackTrace();
}
day = (endDate.getTime() - beginDate.getTime()) / (24 * 60 * 60 * 1000);
// System.out.println("相隔的天数="+day);
return day;
}
/**
* 得到n天之后的日期
*
* @param days
* @return
*/
public static String getAfterDayDate(String days) {
int daysInt = Integer.parseInt(days);
Calendar canlendar = Calendar.getInstance(); // java.util包
canlendar.add(Calendar.DATE, daysInt); // 日期减 如果不够减会将月变动
Date date = canlendar.getTime();
SimpleDateFormat sdfd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dateStr = sdfd.format(date);
return dateStr;
}
/**
* 得到n天之后是周几
*
* @param days
* @return
*/
public static String getAfterDayWeek(String days) {
int daysInt = Integer.parseInt(days);
Calendar canlendar = Calendar.getInstance(); // java.util包
canlendar.add(Calendar.DATE, daysInt); // 日期减 如果不够减会将月变动
Date date = canlendar.getTime();
SimpleDateFormat sdf = new SimpleDateFormat("E");
String dateStr = sdf.format(date);
return dateStr;
}
/**
* 格式化Oracle Date
* @param value
* @return
*/
// public static String buildDateValue(Object value){
// if(Func.isOracle()){
// return "to_date('"+ value +"','yyyy-mm-dd HH24:MI:SS')";
// }else{
// return Func.toStr(value);
// }
// }
/* public static void main(String[] args) {
System.out.println(getTime(new Date()));
System.out.println(getAfterDayWeek("3"));
}*/
}