JSP养老保险管理系统

package com.util; import java.sql.Timestamp; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; /** * 时间操作器 * @author Alien * */ public class TimeFormator { //dat格式为："1900-02-21 12:23:33"; public Date fromStrToDate(String dat){ SimpleDateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date = null; try { date = dateformat .parse(dat); } catch (ParseException e) { e.printStackTrace(); } return date; } //dat格式为："1900-02-2"; public Date fromToDate(String dat){ SimpleDateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd"); Date date = null; try { date = dateformat .parse(dat); } catch (ParseException e) { e.printStackTrace(); } return date; } /** * 获取今天时间 格式yyyy-MM-dd * @return */ public String getToday(){ String str = ""; SimpleDateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd"); str = dateformat.format(new Date()); return str; } /** * 获取现在时间 格式： yy-mm-dd HH:mm:ss * @return */ public static String getNow(){ String str = ""; SimpleDateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); str = dateformat.format(new Date()); return str; } /** * 获取现在时间 格式： yy-mm-dd HH:mm:ss * @return TIMESTAMP */ public static Timestamp getNowTimestamp(){ String str = ""; SimpleDateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); str = dateformat.format(new Date()); return fromStringToTimestamp(str); } /** * 获取现在的时间 格式：xx年xx月xx日 xx:xx:ss * @return */ public String getNowWithChin(){ Date now = new Date(); DateFormat d6 = DateFormat.getDateTimeInstance(DateFormat.LONG,DateFormat.MEDIUM); String str6 = d6.format(now); return str6; } /** * String 转化为 timestamp * @param time * @return */ public static Timestamp fromStringToTimestamp(String time){ Timestamp ts = Timestamp.valueOf(time); return ts; } /** * 获取间隔今天N天的日期 负数为过去 * @param n * @return */ public String getTheDay(int n) { SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd"); long day = 0; long temp = 0; String days = ""; try { Date date = new Date(); day = date.getTime(); temp = 24 * 60 * 60 * 1000 * (n); days = myFormatter.format(day + temp); } catch (Exception e) { return ""; } return days; } /** * 获取间隔今天N天的日期 负数为过去 * @param n * @return yyyy-MM-dd HH:mm:ss */ public String getTheDayFromADay(int n,String time) { String times= ""; String temp = this.getTheDate(n); temp = temp + " 23:59:59"; return times; } /** * 得到二个日期间的间隔天数 */ public static String getTwoDay(String sj1, String sj2) { SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd"); long day = 0; try { java.util.Date date = myFormatter.parse(sj1); java.util.Date mydate = myFormatter.parse(sj2); day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000); } catch (Exception e) { return ""; } return day + ""; } //获取当天时间 public String getNowTime(String dateformat){ Date now = new Date(); SimpleDateFormat dateFormat = new SimpleDateFormat(dateformat);//可以方便地修改日期格式 String hehe = dateFormat.format(now); return hehe; } /** * 获取上一月月 * @return */ public String getTheDateForMonth(){ Calendar cd = Calendar.getInstance(); int day = cd.get(Calendar.DATE); int month = cd.get(Calendar.MONTH); int year = cd.get(Calendar.YEAR); return year+"-"+month+"-"+day; } // 获得当前日期与本周日相差的天数 private int getMondayPlus() { Calendar cd = Calendar.getInstance(); // 获得今天是一周的第几天，星期日是第一天，星期二是第二天...... int dayOfWeek = cd.get(Calendar.DAY_OF_WEEK)-1; //因为按中国礼拜一作为第一天所以这里减1 if (dayOfWeek == 1) { return 0; } else { return 1 - dayOfWeek; } } //获得下个月最后一天的日期 public String getNextMonthEnd(){ String str = ""; SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); Calendar lastDate = Calendar.getInstance(); lastDate.add(Calendar.MONTH,1);//加一个月 lastDate.set(Calendar.DATE, 1);//把日期设置为当月第一天 lastDate.roll(Calendar.DATE, -1);//日期回滚一天，也就是本月最后一天 str=sdf.format(lastDate.getTime()); return str; } /** * 获取长时间计算 返回和今天相差多少天的日期 * @param time * @param n * @return yyyy-MM-dd */ public String getTheDate(int n){ String str = ""; SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); Calendar date = Calendar.getInstance(); date.roll(date.DATE, n); str = sdf.format(date.getTime()); return str; } /** * 返回和今天相差月数日期 * @param n * @return */ public String getTheMonthDay(int n){ String str = ""; SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); Calendar date = Calendar.getInstance(); Date now = date.getTime(); long now1 = now.getTime(); int k =(n/12)+1 ; date.roll(date.MONTH, n); if(n>0&&(date.getTime().getTime()<now1)) date.roll(date.YEAR, k); str = sdf.format(date.getTime()); System.out.println(str); return str; } /** * 比较时间是否大于今天 * @param time yyyy-MM-dd * @return */ public boolean TimeCompareToday(String time){ SimpleDateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd"); Calendar c1 = Calendar.getInstance(); Calendar c2 = Calendar.getInstance(); try { c2.setTime(dateformat.parse(time)); } catch (ParseException e) { e.printStackTrace(); } if(c2.after(c1)){ return true; } else return false; } }