datewrapper.java

负责公文的传输及一些处理功能

package com.example.util;

import java.util.Locale;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import com.example.util.StringUtils;

public class DateWrapper {

  /**
   * @param val String date formatted string
   * This Date class provides a string wrapper for all three sql types:
   * java.sql.Date, java.sql.Time and java.sql.Timestamp
   * <br>
   * Three types of string formats are allowed:
   * <li>year-month-day "2001-05-20"
   * <li>hour:min:sec "01:01:01"
   * <li>year-month-day hour:min:sec "2001-05-20 01:01:01"
   * <br>
   * If "2001:05:20 01:01:01" is passed in, year, month and day = 0
   * <br>
   * Date will be set to current time if val = ""
   */
  public static java.util.Date getDate(java.lang.String val){

    java.util.Date date = null;

    if( (val.equals(""))||(val.equals("0")) ){
      date = new java.sql.Date( new java.util.Date().getTime() );
      return date;
    }

    GregorianCalendar cal = new GregorianCalendar();
    java.lang.String[] ts = StringUtils.split(val, " ");
    java.lang.String[] ymd, hms;
    int year = 0, month = 0, day = 0, hour = 0, min = 0, sec = 0;

    // parse "2001-05-20"
    if( ts[0].indexOf("-") > -1 ){
      ymd = StringUtils.split(ts[0], "-");
      year  = Integer.parseInt(ymd[0]);
      month = Integer.parseInt(ymd[1]) - 1;
      day = Integer.parseInt(ymd[2]);
    }
    // parse "01:01:01"
    else if( ts[0].indexOf(":") > -1 ){
      hms = StringUtils.split(ts[0], ":");
      hour  = Integer.parseInt(hms[0]);
      min   = Integer.parseInt(hms[1]);
      sec   = Integer.parseInt(hms[2]);
    }

    // parse "01:01:01" in second array element
    if( ts.length > 1){
      hms = StringUtils.split(ts[1], ":");
      hour  = Integer.parseInt(hms[0]);
      min   = Integer.parseInt(hms[1]);
      sec   = Integer.parseInt(hms[2]);
    }

    cal.set(year, month, day);
    cal.set(Calendar.HOUR_OF_DAY, hour);
    cal.set(Calendar.MINUTE, min);
    cal.set(Calendar.SECOND, sec);

    // cannot get millis from calendar in JDK1.3 so first we get a java.util.Date
    date = cal.getTime();
    //date = new java.sql.Date( utilDate.getTime() );
    return date;
  }

  /**
   * 将日期格式化成"yyyy年M月d日"的形式，如将2000-01-01转换为2000年1月1日
   * @param date
   * @return
   */
  public static String getChineseDate(java.util.Date date) {
    DateFormat df = DateFormat.getDateInstance(DateFormat.LONG, Locale.CHINESE);
    String strDate = df.format(date);
    return strDate;
  }

  /**
   * 将日期格式化成"yyyy-MM-dd HH:mm:ss"的形式，如"2000-12-3 12:53:48"
   * @param date
   * @return
   */
  public static String getLongTime(java.util.Date date) {
    DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, Locale.CHINESE);
    String strDate = df.format(date);
    return strDate;
  }

  /**
   * 将日期格式化成"yyyy-MM-dd HH:mm"的形式，如"2000-12-3 12:53"
   * @param date
   * @return
   */
  public static String getLongFormatTime(java.util.Date date) {
    DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm");//DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, Locale.CHINESE);
    String strDate = df.format(date);
    return strDate;
  }

  /**
   * 将日期格式化成"yyyy-MM-dd"的形式，如"2000-12-3"
   * @param date
   * @return
   */
  public static String getLongDate(java.util.Date date) {
    DateFormat df = new SimpleDateFormat("yyyy-MM-dd");//DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, Locale.CHINESE);
    String strDate = df.format(date);
    return strDate;
  }

  /**
   * 将日期格式化成"yyyy/MM/dd"的形式，如"2000-12-3"
   * @param date
   * @return
   */
  public static String getLongFormatDate(java.util.Date date) {
    DateFormat df = new SimpleDateFormat("yyyy/MM/dd");
    String strDate = df.format(date);
    return strDate;
  }
}