dateformatbystring.java

java阿里巴巴代码

package com.saas.biz.commen;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

import com.saas.sys.exp.SaasApplicationException;

/**
 * @author:LiuYang
 * @desc:日期类型格式化
 * @2008-5-19
 */
public class DateFormatByString {
	
	
	
	/**
	 * 返回年月日时分秒星期
	 * 
	 * @param data
	 * @return
	 * @throws ParseException
	 */
	
	public String getDateYMDHMSW(String data) throws ParseException {

		Calendar calendar = Calendar.getInstance();
		String format = "";
		if (data.length() > 10) {
			format = "yyyy-MM-dd HH:mm:ss";
		}
		else {
			format = "yyyy-MM-dd";
		}
		SimpleDateFormat myFmt = new SimpleDateFormat(format);
		Date date = myFmt.parse(data);
		calendar.setTime(date);
		int year = calendar.get(Calendar.YEAR);
		int month = calendar.get(Calendar.MONTH) + 1;
		int day = calendar.get(Calendar.DAY_OF_MONTH);
		int week = calendar.get(Calendar.DAY_OF_WEEK) - 1;
		int hour = calendar.get(Calendar.HOUR_OF_DAY);
		int minute = calendar.get(Calendar.MINUTE);
		int second = calendar.get(Calendar.SECOND);
		String strDate = year + "年" + month + "月" + day + "日" + hour + "时" + minute + "分" + second + "秒" + getWeek(week);
		return strDate;
	}
	
	
	public static void main(String[] args) throws SaasApplicationException {

		System.out.println(new DateFormatByString().getDateTimeNow());
	}
	
	/**
	 * @return 取出当前日期
	 * @throws SaasApplicationException
	 */
	public String getDateTimeNow() throws SaasApplicationException {

		Calendar calendar = Calendar.getInstance();
		calendar.setTime(new Date());
		int week = calendar.get(Calendar.DAY_OF_WEEK) - 1;
		String strDate = new SimpleDateFormat("yyyy-MM-dd").format(new Date()) + "  " + getWeek(week);
		return strDate;
	}
	
	
	
	/**
	 * 返回星期
	 * 
	 * @param week
	 * @return
	 */
	
	public String getWeek(int week) {

		int temp = week;
		String weekday = "";
		if (temp == 1)
			weekday = "星期一";
		else if (temp == 2)
			weekday = "星期二";
		else if (temp == 3)
			weekday = "星期三";
		else if (temp == 4)
			weekday = "星期四";
		else if (temp == 5)
			weekday = "星期五";
		else if (temp == 6)
			weekday = "星期六";
		else
			weekday = "星期日";
		return weekday;
	}
	
}