validate.java

一个汽车售后服务站的典型的进销管理系统,B/S模式的

package com.xfaccp.struts.action.emp;

import java.util.Random;

public class Validate {
	static Random r = new Random();

	static String ssource = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
			+ "abcdefghijklmnopqrstuvwxyz" + "0123456789";

	static char[] src = ssource.toCharArray();

	// 产生随机字符串
	public String randString(int length) {
		char[] buf = new char[length];
		int rnd;
		for (int i = 0; i < length; i++) {
			rnd = Math.abs(r.nextInt()) % src.length;

			buf[i] = src[rnd];
		}
		return new String(buf);
	}
}