xml,jsp,javascript实现密码强度判断 / 学生王国

</form>
/*
* 2005-12-14
* Made in GamVan
*/
package com.gamvan.club.servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.gamvan.tools.EncodeString;
/**
* @author GamVan by 我容易么我
* Powered by GamVan.com
*/
public class RateUserPass extends HttpServlet {
private static final long serialVersionUID = 1L;
private int rate = 0;

/**
* 口令强弱等级判定,强度算法有待商戳，功能基本实现
* @param pass
* @return
* 2005-12-14 16:55:03 Made In GamVan
* com.gamvan.club.servlet
*/
public int rateUserPass(String pass){
/*
* i 值指示口令等级
* 0 不合法口令
* 1 太短
* 2 弱
* 3 一般
* 4 很好
* 5 极佳
*/
int i = 0;
if(pass==null || pass.length()==0){
return 0;
}
int hasLetter = EncodeString.matcherStr(pass,"[a-zA-Z]","").length();
int hasNumber = EncodeString.matcherStr(pass,"[0-9]","").length();
int passLen = pass.length();
if(passLen>=6){
/* 如果仅包含数字或仅包含字母 */
if((passLen-hasLetter)==0 || (passLen-hasNumber)==0){
if(passLen<8){
i = 2;
}else {
i = 3;
}
}
/* 如果口令大于6位且即包含数字又包含字母 */
else if(hasLetter>0 && hasNumber>0){
if(passLen>=10){
i = 5;
}else if(passLen>=8){
i = 4;
}else{
i = 3;
}
}
/* 如果既不包含数字又不包含字母 */
else if(hasLetter==0 && hasNumber==0){
if(passLen>=7){
i = 5;
}else{
i = 4;
}
}
/* 字母或数字有一方为0 */
else if(hasNumber==0||hasLetter==0){
if((passLen-hasLetter)==0 || (passLen-hasNumber)==0){
i = 2;
}
/*
* 字母数字任意一种类型小于6且总长度大于等于6
* 则说明此密码是字母或数字加任意其他字符组合而成
*/
else{
if(passLen>8){
i = 5;
}else if(passLen==8){
i = 4;
}else{
i = 3;
}
}
}
}else{ //口令小于6位则显示太短
if(passLen>0){
i = 1; //口令太短
}else{
i = 0;
}
}
return i;
}

public void service(HttpServletRequest request,HttpServletResponse response)
throws ServletException, IOException
{
String userPass = request.getParameter("passwd");
rate = rateUserPass(userPass);
response.setContentType("text/HTML;charset=UTF-8");