Struts1.2+Spring2.5+Hibernate3.2框架搭建（十六）
附：工具类ZlkUtil.java
package com.zlk.util;
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import java.util.Calendar;
import java.util.Random;
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public class ZlkUtil {
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??? /**
??? ?* 获得唯一字符串的方法（str+"_"+毫秒数+4位随机数）（循环添加的时候不建议用，可能出现重复）
??? ?*
??? ?* @param str
??? ?* @return
??? ?*/
??? public static String getCoustomKeyID(String str) {
?????? Random rand = new Random();
?????? return str + "_" + Calendar.getInstance().getTimeInMillis()+ (rand.nextInt(9999 - 1000 + 1) + 1000);
??? }
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??? /**
??? ?* 单例模式生成唯一字符串
??? ?*
??? ?* @return
??? ?*/
??? public static synchronized String getUniqueString() {
?????? if (generateCount > 99999) generateCount = 0;
?????? String uniqueNumber = Long.toString(System.currentTimeMillis())+ Integer.toString(generateCount);
?????? generateCount++;
?????? return uniqueNumber;
??? }
??? private static final int MAX_GENERATE_COUNT = 99999;
??? private static int generateCount = 0;
???
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}
