ClockInTool.java

package cn.timer.api.controller.kqgl;

import java.text.DateFormat;
import java.text.Format;
import java.text.ParseException;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Locale;
import java.util.Set;

import org.apache.commons.lang3.ArrayUtils;

/**
 * @author lal 2020-05-11
 *
 */
public class ClockInTool {

	static SimpleDateFormat famt = new SimpleDateFormat("yyyy-MM-dd");
	public static void main(String[] args) {
		System.out.println(isLegalDate("2020-9-12"));
		System.out.println(isLegalDate("2020-09-12"));
	}
	
	public static boolean isLegalDate(String sDate) {
	    int legalLen = 10;
	    if ((sDate == null) || (sDate.length() != legalLen)) {
	        return false;
	    }
	 
	    DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
	    try {
	        Date date = formatter.parse(sDate);
	        return sDate.equals(formatter.format(date));
	    } catch (Exception e) {
	        return false;
	    }

	}
	
	public static String[] shuzuqucong(String[] temp) {
	      
        List<String> list = new LinkedList<String>();  
        for(int i = 0; i < temp.length; i++) {  
            if(!list.contains(temp[i])) {  
                list.add(temp[i]);  
            }  
        }  
  
        String[] rowsTemp = list.toArray(new String[list.size()]);  
        if(rowsTemp!=null && rowsTemp.length > 0) {  
            for(int i=0; i<rowsTemp.length; i++) {  
                System.out.println(rowsTemp[i]);  
            }  
        }
		
		return rowsTemp;
	}
	
	public static boolean useArrayUtils(String[] arr, String targetValue) {
	    return ArrayUtils.contains(arr,targetValue);
	}
	
	// 获得上个月月份年份
	public static String getLastYearMonth() {
//		Calendar now = Calendar.getInstance();
//		int month = now.get(Calendar.MONTH);
//		String m;
//		if (month < 10) {
//			m = "0" + month;
//		} else {
//			m = month + "";
//		}
//		return now.get(Calendar.YEAR) + "-" + m;
		
		LocalDate today = LocalDate.now();
		today = today.minusMonths(1);
		DateTimeFormatter formatters = DateTimeFormatter.ofPattern("yyyy-MM");
		return formatters.format(today);
	}
	
	/**
     * 将传入的日期的年月得到一个值
     * @param date 日期
     * @return 获取一个唯一的年月数值
     */
    public static int getYearMonth(Date date){
        //传入日期
        Calendar calder = Calendar.getInstance();
        calder.setTime(date);//设置时间
        int year = calder.get(Calendar.YEAR);//获取年份
        int month=calder.get(Calendar.MONTH);//获取月份
        //返回年份乘以100加上月份的值，因为月份最多2位数，
        // 所以年份乘以100可以获取一个唯一的年月数值
        return year*100+month;
    }
	
	public static double round(double value){
	    return Math.round(value*100)/100.0;
	}
	
	 /**
	  *  判断某个字符串是否存在于数组中
	  *  @param stringArray 原数组
	  *  @param source 查找的字符串
	  *  @return 是否找到
	  */
	 public static boolean contains(String[] stringArray, String source) {
	  // 转换为list
	  List<String> tempList = Arrays.asList(stringArray);
	  
	  // 利用list的包含方法,进行判断
	  if(tempList.contains(source))
	  {
	   return true;
	  } else {
	   return false;
	  }
	 }
	
	
	/**
	 * @param ss
	 * @return 去除重复
	 */
	public static String[] duplicate_removal(String[] ss) {
	    List<String> list =new ArrayList<String>();
			for(String s:ss){
				if(!list.contains(s))			//或者list.indexOf(s)!=-1
					list.add(s);
			}
			return list.toArray(new String[list.size()]);
	}
	
	/**
	 * 将String时间转换为时间戳
	 * 
	 * @param time
	 * @return
	 * @throws ParseException
	 */
	public static long getStringTime(String time, String format)
			throws ParseException {
		SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format);
		Date date = simpleDateFormat.parse(time);
		return date.getTime();
	}
	
	
	/**
	 * 根据时间戳获取23点
	 * 
	 * @return
	 */
	public static Date getnowEndTime(int day, long time) {
		Calendar todayEnd = Calendar.getInstance();
		todayEnd.setTimeInMillis(time);
		todayEnd.set(Calendar.HOUR_OF_DAY, day);
		todayEnd.set(Calendar.MINUTE, 59);
		todayEnd.set(Calendar.SECOND, 59);
		todayEnd.set(Calendar.MILLISECOND, 999);
		return todayEnd.getTime();
	}
	
	/**
	 * 根据时间戳获取0点
	 * 
	 * @return
	 */
	public static Date getStartTime(int day, long time) {
		Calendar todayStart = Calendar.getInstance();
		todayStart.setTimeInMillis(time);
		todayStart.set(Calendar.HOUR_OF_DAY, day);
		todayStart.set(Calendar.MINUTE, 0);
		todayStart.set(Calendar.SECOND, 0);
		todayStart.set(Calendar.MILLISECOND, 0);
		return todayStart.getTime();
	}
	
	// 根据传入的日期获取所在月份所有日期
	public static List<String> getAllDaysMonthByDate(Date d){
		List<String> lst = new ArrayList<String>();
		Date date = getMonthStart(d);
		Date monthEnd = getMonthEnd(d);
		while (!date.after(monthEnd)) {
			lst.add(famt.format(date));
			date = getNext(date);
		}
		return lst;
	}
	private static Date getMonthStart(Date date) {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(date);
		int index = calendar.get(Calendar.DAY_OF_MONTH);
		calendar.add(Calendar.DATE, (1 - index));
		return calendar.getTime();
	}

	private static Date getMonthEnd(Date date) {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(date);
		calendar.add(Calendar.MONTH, 1);
		int index = calendar.get(Calendar.DAY_OF_MONTH);
		calendar.add(Calendar.DATE, (-index));
		return calendar.getTime();
	}
	private static Date getNext(Date date) {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(date);
		calendar.add(Calendar.DATE, 1);
		return calendar.getTime();
	}
	
	// 将字符串转化为日期
	public static Date paraseStringToDate(String timestr){
		Date date = null;
		Format f = new SimpleDateFormat("yyyy-MM-dd");
		try {
			date = (Date) f.parseObject(timestr);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		return date;
	}
	// 将字符串转化为日期
	public static Date paraseStringToDate(String timestr,String format){
		Date date = null;
		Format f = new SimpleDateFormat(format);
		try {
			date = (Date) f.parseObject(timestr);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		return date;
	}
	/***
     * 去除String数组中的空值
     */
    public static String[] deleteArrayNull(String string[]) {
        String strArr[] = string;

        // step1: 定义一个list列表，并循环赋值
        ArrayList<String> strList = new ArrayList<String>();
        for (int i = 0; i < strArr.length; i++) {
            strList.add(strArr[i]);
        }

        // step2: 删除list列表中所有的空值
        while (strList.remove(null));
        while (strList.remove(""));

        // step3: 把list列表转换给一个新定义的中间数组，并赋值给它
        String strArrLast[] = strList.toArray(new String[strList.size()]);

        return strArrLast;
    }
    
    /***
     * 去除String数组中的空值
     */
    public static String[] deleteArrayNull2(String string[]) {
        String strArr[] = string;

        // step1: 定义一个list列表，并循环赋值
        ArrayList<String> strList = new ArrayList<String>();
        for (int i = 0; i < strArr.length; i++) {
            strList.add(strArr[i]);
        }

        // step2: 删除list列表中所有的空值
        while (strList.remove(null));
//        while (strList.remove(""));

        // step3: 把list列表转换给一个新定义的中间数组，并赋值给它
        String strArrLast[] = strList.toArray(new String[strList.size()]);

        return strArrLast;
    }
    
    public static Date strToDateLong(String strDate) {
		SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
		ParsePosition pos = new ParsePosition(0);
		Date strtodate = formatter.parse(strDate, pos);
		return strtodate;
	}
	
	/**
	 * @param timeStr 修改的时间
	 * @param num 修改数字
	 * @param numtime
	 * @return 1：增加一年、2：增加一天、3：减10天、4：增加一个月
	 */
	public static String requires_extra_times(String timeStr, int num,int numtime,int daft) {
		
		DateFormat df;
		if(daft == 1) {
			df = new SimpleDateFormat("yyyy-MM-dd");
		}else {
			df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		}
		
		Date date = null;
		try {
			date = df.parse(timeStr);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);// 设置起时间
		if(numtime == 1) {
			cal.add(Calendar.YEAR, num);// 增加一年
		}else if(numtime == 2) {
			cal.add(Calendar.DATE, num);//增加一天
		}else if(numtime == 3) {
			cal.add(Calendar.DATE, num);//减10天
		}else if(numtime == 4){
			cal.add(Calendar.MONTH, num);//增加一个月
		}else if(numtime == 5) {
			cal.add(Calendar.HOUR, num);
		}
		return df.format(cal.getTime());
	}
	
	/**
	 * @param timeStr
	 * @param addnumber
	 * @return 通过java Calendar 实现时间+ 分钟
	 */
	public static String addtime(String timeStr, String addnumber) {
		String str = null;
		try {
			DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
			Date date = df.parse(timeStr);
			// 时间累计
			Calendar gc = new GregorianCalendar();
			gc.setTime(date);
			gc.add(GregorianCalendar.MINUTE, Integer.parseInt(addnumber));
			str = df.format(gc.getTime());
		} catch (NumberFormatException e) {
			e.printStackTrace();
		} catch (ParseException e) {
			e.printStackTrace();
		}
		return str;
	}

	/**
	 * 获取指定年月的第一天
	 * 
	 * @param year
	 * @param month
	 * @return
	 */
	public static String getFirstDayOfMonth1(int year, int month) {
		Calendar cal = Calendar.getInstance();
		// 设置年份
		cal.set(Calendar.YEAR, year);
		// 设置月份
		cal.set(Calendar.MONTH, month - 1);
		// 获取某月最小天数
		int firstDay = cal.getMinimum(Calendar.DATE);
		// 设置日历中月份的最小天数
		cal.set(Calendar.DAY_OF_MONTH, firstDay);
		// 格式化日期
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
		return sdf.format(cal.getTime());
	}

	/**
	 * 获取指定年月的最后一天
	 * 
	 * @param year
	 * @param month
	 * @return
	 */
	public static String getLastDayOfMonth1(int year, int month) {
		Calendar cal = Calendar.getInstance();
		// 设置年份
		cal.set(Calendar.YEAR, year);
		// 设置月份
		cal.set(Calendar.MONTH, month - 1);
		// 获取某月最大天数
		int lastDay = cal.getActualMaximum(Calendar.DATE);
		// 设置日历中月份的最大天数
		cal.set(Calendar.DAY_OF_MONTH, lastDay);
		// 格式化日期
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
		return sdf.format(cal.getTime());
	}

	// 数组容量的扩容，当空间（.length）不够的时候，增加一
	public static String[] arrycopy(String[] ss) {
		// TODO Auto-generated method stub
		String[] ii = new String[ss.length + 1];
		System.arraycopy(ss, 0, ii, 0, ss.length);
		return ii;
	}

	public static String[] replaceNull(String[] str) {
		// 用StringBuffer来存放数组中的非空元素，用“;”分隔
		StringBuffer sb = new StringBuffer();
		for (int i = 0; i < str.length; i++) {
			if ("null".equals(str[i])) {
				continue;
			}
			sb.append(str[i]);
			if (i != str.length - 1) {
				sb.append(";");
			}
		}
		// 用String的split方法分割，得到数组
		str = sb.toString().split(";");
		return str;
	}

	/**
	 * 删除数组中的指定值 或者数组中的元素包含指定值
	 * 
	 * @param filters 数组
	 * @param target  指定值
	 * @return
	 */
	public static String[] doChinFilters(String[] filters, String target) {
		
		
		target = ClockInTool.Str_Time_formatting(target,"yyyy-MM-dd");
		
		String[] res = null;
		if (filters.length > 0) {
			List<String> tempList = Arrays.asList(filters);
			// Arrays.asList(filters) 迭代器实现类 不支持remove() 删除，多一步转化
			List<String> arrList = new ArrayList<String>(tempList);
			Iterator<String> it = arrList.iterator();
			while (it.hasNext()) {
				String x = it.next();
				if(x != null) {
					if (x.indexOf(target) != -1) {
						it.remove();
					}
				}
			}
			res = new String[arrList.size()];
			arrList.toArray(res);
		}
		return res;
	}

	/**
	 * 获取两个日期之间的所有日期
	 */
	public static List<String> getDays(String startTime, String endTime) {
		// 返回的日期集合
		List<String> days = new ArrayList<String>();
		DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
		try {
			Date start = dateFormat.parse(startTime);
			Date end = dateFormat.parse(endTime);

			Calendar tempStart = Calendar.getInstance();
			tempStart.setTime(start);

			Calendar tempEnd = Calendar.getInstance();
			tempEnd.setTime(end);
			tempEnd.add(Calendar.DATE, +1);// 日期加1(包含结束)
			while (tempStart.before(tempEnd)) {
				days.add(dateFormat.format(tempStart.getTime()));
				tempStart.add(Calendar.DAY_OF_YEAR, 1);
			}
		} catch (ParseException e) {
			e.printStackTrace();
		}

		return days;
	}

	/**
	 * 拼接字符串
	 */
	public static String listToString(List<String> list) {

		if (list == null) {
			return null;
		}

		StringBuilder result = new StringBuilder();
		boolean first = true;

		// 第一个前面不拼接","
		for (String string : list) {
			if (first) {
				first = false;
			} else {
				result.append(",");
			}
			result.append(string);
		}
		return result.toString();
	}

	/**
	 * 使用java正则表达式去掉多余的.与0
	 * 
	 * @param s
	 * @return string
	 */
	public static String replace(String s) {
		if (null != s && s.indexOf(".") > 0) {
			s = s.replaceAll("0+?$", "");// 去掉多余的0
			s = s.replaceAll("[.]$", "");// 如最后一位是.则去掉
		}
		return s;
	}

	/**
	 * 根据 年、月 获取对应的月份 的 天数
	 */
	public static int getDaysByYearMonth(int year, int month) {
		Calendar a = Calendar.getInstance();
		a.set(Calendar.YEAR, year);
		a.set(Calendar.MONTH, month - 1);
		a.set(Calendar.DATE, 1);
		a.roll(Calendar.DATE, -1);
		int maxDate = a.get(Calendar.DATE);
		return maxDate;
	}

	/**
	 * 获取月份起始日期
	 * 
	 * @param date
	 * @return
	 * @throws ParseException
	 */
	public static String getMinMonthDate(String date) throws ParseException {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(famt.parse(date));
		calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
		return famt.format(calendar.getTime());
	}

	/**
	 * 获取月份最后日期
	 * 
	 * @param date
	 * @return
	 * @throws ParseException
	 */
	public static String getMaxMonthDate(String date) throws ParseException {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(famt.parse(date));
		calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
		return famt.format(calendar.getTime());
	}

	/**
	 * 对比两个字符串数组
	 * 
	 * @param t1
	 * @param t2
	 * @return
	 */
	public static <T> List<T> compare(T[] t1, T[] t2) {
		List<T> list1 = Arrays.asList(t1); // 将t1数组转成list数组
		List<T> list2 = new ArrayList<T>();// 用来存放2个数组中不相同的元素
		for (T t : t2) {
			if (!list1.contains(t)) {
				list2.add(t);
			}
		}
		return list2;
	}

	public static String[] array_unique(String[] ss) {
		Set<String> set = new HashSet<String>(Arrays.asList(ss));
		return set.toArray(new String[set.size()]);
		// 或者return new HashSet<String>(Arrays.asList(ss)).toArray(new String[0]);
	}

	public static byte[] CreateBSCommBufferFromString(String sCmdParam, byte[] bytCmd) {
		try {
			if (sCmdParam.length() == 0) {
				return bytCmd;
			}
			byte[] bytText = sCmdParam.getBytes("UTF-8");
			byte[] bytTextLen = int2byte(bytText.length + 1);
			bytCmd = new byte[4 + bytText.length + 1];
			System.arraycopy(bytTextLen, 0, bytCmd, 0, bytTextLen.length);
			System.arraycopy(bytText, 0, bytCmd, 4, bytText.length);
			bytCmd[4 + bytText.length] = 0;
			return bytCmd;
		} catch (Exception e) {
			e.printStackTrace();
			bytCmd = new byte[0];
			return bytCmd;
		}
	}

	public static byte[] int2byte(int res) {
		byte[] targets = new byte[4];
		targets[0] = (byte) (res & 0xff);
		targets[1] = (byte) ((res >> 8) & 0xff);
		targets[2] = (byte) ((res >> 16) & 0xff);
		targets[3] = (byte) (res >>> 24);
		return targets;
	}

	public static byte[] ConcateByteArray(byte[] abytDest, byte[] abytSrc) {
		int len_dest = abytDest.length + abytSrc.length;
		if (abytSrc.length == 0)
			return abytDest;
		byte[] bytTmp = new byte[len_dest];
		System.arraycopy(abytDest, 0, bytTmp, 0, abytDest.length);
		System.arraycopy(abytSrc, 0, bytTmp, abytDest.length, abytSrc.length);
		return bytTmp;
	}

	public static String dateToWeek2(String datetime) {

		SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd");
		String[] weekDays = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
//        String[] weekDays = {"7", "1", "2", "3", "4", "5", "6"};
		Calendar cal = Calendar.getInstance();
		Date date;
		try {
			date = f.parse(datetime);
			cal.setTime(date);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		// 一周的第几天
		int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
		if (w < 0)
			w = 0;
		return weekDays[w];
	}

	/**
	 * 
	 * @param nowDate   要比较的时间
	 * @param startDate 开始时间
	 * @param endDate   结束时间
	 * @return true在时间段内，false不在时间段内
	 * @throws Exception
	 */
	public static boolean hourMinuteBetween(String nowDate, String startDate, String endDate, String date_format) {

		SimpleDateFormat format = new SimpleDateFormat(date_format);

		Date now = null;
		Date start = null;
		Date end = null;
		try {
			now = format.parse(nowDate);
			start = format.parse(startDate);
			end = format.parse(endDate);
		} catch (ParseException e) {
			e.printStackTrace();
		}

		long nowTime = now.getTime();
		long startTime = start.getTime();
		long endTime = end.getTime();

		return nowTime >= startTime && nowTime <= endTime;

	}

	/**
	 * 根据日期获取 星期 （2019-05-06 ——> 星期一）
	 * 
	 * @param datetime
	 * @return
	 */
	public static String dateToWeek(String datetime) {

		SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd");
//        String[] weekDays = {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"};
		String[] weekDays = { "7", "1", "2", "3", "4", "5", "6" };
		Calendar cal = Calendar.getInstance();
		Date date;
		try {
			date = f.parse(datetime);
			cal.setTime(date);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		// 一周的第几天
		int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
		if (w < 0)
			w = 0;
		return weekDays[w];
	}

	/**
	 * 2019-10-24T00:30:23.000Z 转化时间
	 */
	public static String dealDateFormat(String oldDateStr, int num) {
		DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSXXX"); // yyyy-MM-dd'T'HH:mm:ss.SSSZ
		Date date = null;
		try {
			date = df.parse(oldDateStr);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		SimpleDateFormat df1 = new SimpleDateFormat("EEE MMM dd HH:mm:ss Z yyyy", Locale.UK);
		Date date1 = null;
		try {
			date1 = df1.parse(date.toString());
		} catch (ParseException e) {
			e.printStackTrace();
		}
		DateFormat df2 = null;
		if (num == 1) {
			df2 = new SimpleDateFormat("yyyy-MM-dd' 'HH:mm:ss");
		} else if (num == 2) {
			df2 = new SimpleDateFormat("HH:mm");
		} else if (num == 3) {
			df2 = new SimpleDateFormat("yyyy-MM-dd' 'HH:mm");
		}

		return df2.format(date1);
	}

	/**
	 * 时间转换时间戳
	 */
	public static String dateToStamp(String s) {
		String res;
		SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		Date date = null;
		try {
			date = simpleDateFormat.parse(s);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		long ts = date.getTime();
		res = String.valueOf(ts);
		return res;
	}
	
	/**
	 * 时间戳转换时间
	 */
    public static String stampToDate(String s){
        String res;
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        long lt = new Long(s);
        Date date = new Date(lt);
        res = simpleDateFormat.format(date);
        return res;
    }
    
    
    /**
	 * 时间戳转换时间
	 */
    public static String stampToDate2(String s){
        String res;
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
        long lt = new Long(s);
        Date date = new Date(lt);
        res = simpleDateFormat.format(date);
        return res;
    }
    
    /**
	 * 时间戳转换时间
	 */
    public static String stampToDate3(String s){
        String res;
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("HH:mm");
        long lt = new Long(s);
        Date date = new Date(lt);
        res = simpleDateFormat.format(date);
        return res;
    }
    
    /**
	 * 时间戳转换时间
	 */
    public static String stampToDate4(String s){
        String res;
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");
        long lt = new Long(s);
        Date date = new Date(lt);
        res = simpleDateFormat.format(date);
        return res;
    }
    
    /**
   	 * 时间戳转换时间
   	 */
   public static String stampToDate5(String s){
       String res;
       SimpleDateFormat simpleDateFormat = new SimpleDateFormat("MM-dd HH:mm");
       long lt = new Long(s);
       Date date = new Date(lt);
       res = simpleDateFormat.format(date);
       return res;
   }
    
    public static String Str_Time_formatting(String str,String Format) {
    	SimpleDateFormat sdf = new SimpleDateFormat(Format);
	       
//        String str = "2020-06-30 12:30:35"; // 把带时分秒的 date 转为 yyyy-MM-dd 格式的字符串
    	Date date2 = null;
        try {
            date2 = sdf.parse(str); // 把上面的字符串解析为日期类型
//            System.out.println(sdf.format(date2));
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return sdf.format(date2);
    }
    
    
    /**
	 * 	Sun Nov 01 00:00:00 CST 2020
	 */
    public static String SunNovCST(String s){
    	String cst;
    	Date date = new Date(s);
		SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
		cst = simpleDateFormat.format(date);
        return cst;
    }
    
    /**
	 * 	Sun Nov 01 00:00:00 CST 2020
	 */
    public static String SunNovCSTYM(Date date2){
    	String cst;
		SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM");
		cst = simpleDateFormat.format(date2);
        return cst;
    }
    
    /**
	 * 	Sun Nov 01 00:00:00 CST 2020
	 */
    public static String SunNovCSTYMD(Date date2){
    	String cst;
		SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
		cst = simpleDateFormat.format(date2);
        return cst;
    }
    
    /**
   	 * 	Sun Nov 01 00:00:00 CST 2020
   	 */
       public static String SunNovCSTY(Date date2){
       	String cst;
   		SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy");
   		cst = simpleDateFormat.format(date2);
           return cst;
       }

}