Jsp与discuz的整合方法

一直有人问我jsp与dz的整合方法，不过我对jsp一点都不熟，基本上就是不会
后网上搜了一篇文章，也没注明是哪位仁兄所写的，我没有验证过，现贴出供大家参考。
jsp 应用系统整合discuz论坛用户系统
关键代码
/**
 * MD5算法
 * @param strToEncrypt
 * @return
 */
public static String  Md5(String strToEncrypt)
{
 char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
   'a', 'b', 'c', 'd', 'e', 'f' };
  try
  {
   byte[] strTemp = strToEncrypt.getBytes();
   MessageDigest mdTemp = MessageDigest.getInstance("MD5");
   mdTemp.update(strTemp);
   byte[] md = mdTemp.digest();
   int j = md.length;
   char str[] = new char[j * 2];
   int k = 0;
   for (int i = 0; i < j; i++)
   {
    byte byte0 = md[i];
    str[k++] = hexDigits[byte0 >>> 4 & 0xf];
    str[k++] = hexDigits[byte0 & 0xf];
   }
   return new String(str);
  }
  catch (Exception e)
  {
   return "";
  }

}

整合函数
package com.tecamo.cms.util;

import java.io.UnsupportedEncodingException;
import java.util.Map;
import java.util.Random;
import java.util.Set;

import com.tecamo.util.encrypt.EncryptString;

import sun.misc.BASE64Decoder;

public class DiscuzPassportUtils
{

 public static String passportEncrypt(String src, String key) {
   Random random = new Random();
   random.setSeed(System.currentTimeMillis());
   String rand = "" + random.nextInt() % 32000;
   String encryptKey = EncryptString.encryptMD5(rand);

   int ctr = 0;
   String tmp = "";

   for (int i = 0; i < src.length(); ++i) {
     ctr = (ctr == encryptKey.length() ? 0 : ctr);
     tmp += encryptKey.charAt(ctr);
     char c = (char) (src.charAt(i) ^ encryptKey.charAt(ctr));
     tmp += c;
     ctr++;
   }
   String passportKey = passportKey(tmp, key);
   return new sun.misc.BASE64Encoder().encode(passportKey.getBytes());
 }

 public static String passortDecrypt(String src, String key) {
   byte[] bytes = null;
   try {
     bytes = new BASE64Decoder().decodeBuffer(src);
     src = new String(bytes);
   } catch (Exception e) {
     return null;
   }
   src = passportKey(src, key);

   String tmp = "";
   for (int i = 0; i < src.length(); ++i) {
     char c = (char)(src.charAt(i) ^ src.charAt(++i));
     tmp += c;
   }
   return tmp;
 }

 public static String passportKey(String src, String key) {
   String encryptKey = EncryptString.encryptMD5(key);
   int ctr = 0;
   String tmp = "";
   for (int i = 0; i < src.length(); ++i) {
     ctr = (ctr == encryptKey.length() ? 0 : ctr);
     char c = (char) (src.charAt(i) ^ encryptKey.charAt(ctr));
     tmp += c;
     ctr++;
   }
   return tmp;
 }

 public static String passportEncode(Map<String, String> data) {
   Set<String> keys = data.keySet();
   String ret = "";
   for (String key : keys) {
     try {
       ret += java.net.URLEncoder.encode(key, "UTF-8") + "=" + java.net.URLEncoder.encode(data.get(key), "UTF-8") + "&";
     } catch (UnsupportedEncodingException e) {
       return "";
     }
   }
   if (ret.length() > 0)
     return ret.substring(0, ret.length() - 1);
   return "";
 }
}

调用方法:
login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<%@page import="com.tecamo.util.web.MyRequest"%>
<%@page import="com.tecamo.cms.util.DiscuzPassportUtils"%>
<%@page import="com.tecamo.cms.util.ShareFunction"%>
<%@page import="com.tecamo.util.encrypt.EncryptString"%>
<%@page import="java.net.URLEncoder"%>
<%

String strUser=(String) session.getAttribute("username");
if(strUser!=null && !strUser.equals(""))
{
    out.println("当前用户:" + strUser);
}

String forward=MyRequest.getString(request,"forward","");
String action=MyRequest.getString(request,"action","");
if(action.equals("login"))
{
    String forumURL="http://devserver:8066";
    String userName=MyRequest.getString(request,"account","");
    String email=userName;
    String pwd=MyRequest.getString(request,"pwd","");
    Map<String, String> mb = new LinkedHashMap<String, String>();

    mb.put("time", ""+System.currentTimeMillis());
    mb.put("username", userName);
    mb.put("email", email);
    mb.put("password", pwd);
    String key = "12345678901";
    String enc=DiscuzPassportUtils.passportEncode(mb);
    String auth = DiscuzPassportUtils.passportEncrypt(enc, key);
    String verify = "login" + auth + forward + key;
    verify = EncryptString.encryptMD5(verify);                                       
    String location = forumURL+"/api/passport.php?action=login&auth="+URLEncoder.encode(auth, "UTF-8")+"&forward="+URLEncoder.encode(forward, "UTF-8")+"&verify="+URLEncoder.encode(verify, "UTF-8");

    response.sendRedirect(location);
   
    session.setAttribute("username",userName);
}

 %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
 
  </head>
 
  <body>
      <form>
          <table>
              <tr>
                  <td>帐号</td><td><input type="text" name="account"></td>
              </tr>
              <tr><td>密码</td><td><input type="password" name="pwd"></td></tr>
              <tr><td colspan="2">
              <input type="hidden" value="<%=forward%>">
              <input type="hidden" name="action" value="login">
              <input type="submit" value="登录"> </td></tr>
          </table>
      </form>
  </body>
</html>

logout.jsp
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%@page import="com.tecamo.util.encrypt.EncryptString"%>
<%@page import="java.net.URLEncoder"%>
<%@page import="com.tecamo.util.web.MyRequest"%>
<%
//discuz 地址
String forumURL=http://dddd:8066;
String forward=MyRequest.getString(request,"forward","");
//discuz 配置的私钥
String key = "12345678901";                                       
String verify = "logout" + forward + key;
verify = EncryptString.encryptMD5(verify);       
String location = forumURL+"/api/passport.php?action=logout&forward="+URLEncoder.encode(forward, "UTF-8")+"&verify="+URLEncoder.encode(verify, "UTF-8");
response.sendRedirect(location);
session.invalidate();
%>