两个指定时间之间相差时间

package com.wzs;

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

/**
 * 获取指定范围内的不重复随机数
 * 
 * @author wWX154783
 * 
 */
public class Test {
	public static void main(String[] args) {
		String str = getBetweenDate("2012-11-21 11:11:11", "2012-12-1 1:9:56");
		System.out.println(str);
	}

	/**
	 * 返回指定时间时间间隔
	 * 
	 * @param str1
	 *            格式：年-月-日 时:分:秒
	 * @param str2
	 *            格式：年-月-日 时:分:秒
	 * @return x天x小时x分x秒&时间间隔
	 */
	public static String getBetweenDate(String str1, String str2) {
		String str = null;
		try {
			SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
			Date date1 = simpleDateFormat.parse(str1);
			Date date2 = simpleDateFormat.parse(str2);
			long betweenDate = date2.getTime() - date1.getTime();
			// System.out.println("时间间隔：" + betweenDate + "(毫秒)");

			long day = betweenDate / (24 * 60 * 60 * 1000);
			long hour = (betweenDate / (60 * 60 * 1000) - day * 24);
			long min = ((betweenDate / (60 * 1000)) - day * 24 * 60 - hour * 60);
			long s = (betweenDate / 1000 - day * 24 * 60 * 60 - hour * 60 * 60 - min * 60);
			str = day + "天" + hour + "小时" + min + "分" + s + "秒&" + betweenDate;
		} catch (ParseException e) {
			e.printStackTrace();
		}
		return str;
	}
}

输出结果:

9天13小时58分45秒&827925000