如何为客户端查询我的servlet创建单独的会话

Question

我m currently having an intense problem. I can似乎能够为使用我的servlet的客户创建单独的会话。

我的servlet的关键点在于它为各个会话提供了难以理解的hellman密钥交换。这是按预期工作的，但是当另一个用户同时按下添加令牌按钮时。生成的先前值将被覆盖，因此我的服务器一次只能为一个人服务。

如何使用我的diffie hellman servlet为我的客户创建多个会话？ 提前谢谢。

以下是我的代码段。

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    HttpSession session = request.getSession(false);
    if(null == request.getRequestedSessionId())
    {
        //create new session
        System.out.println("No session id found , generating a new session ID");
        session = request.getSession(true);
        System.out.println("session id generated is "+session.getId());
        @SuppressWarnings("deprecation")
        String encodedURL = response.encodeUrl("/MyServletProject/DHServlet");
        System.out.println("res.encodeURL(\"/DHServlet\");="+encodedURL);
        response.sendRedirect(encodedURL);
        return;
    }else
    {
        System.out.println("session id = "+request.getRequestedSessionId());
        System.out.println("no redirect required");
    }

    processRequest(request,response);

}

我的难以置信的密钥交换

protected void processRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    response.setContentType("text/html;charset=UTF-8");
    PrintWriter out = response.getWriter();
   // PrintWriter out2=response.getWriter();
    DH getDH = new DH();



    try {
        System.out.println("Session id requested is "+request.getRequestedSessionId());




        long pValue = getDH.getSafePrime();
        long gValue = getDH.getGenValue(pValue);

        System.out.println("pValue is "+pValue);
        System.out.println("gValue us "+gValue);

        long serverSK = getDH.generateSKA();

        BigInteger safePrimeValue = BigInteger.valueOf(pValue);
        BigInteger generatorValue = BigInteger.valueOf(gValue);

        System.out.println("the safe Prime is "+safePrimeValue);
        System.out.println("the generator value is "+generatorValue);

        BigInteger serverPK = getDH.generatePkB(generatorValue, safePrimeValue, serverSK);
   // System.out.println(publicKeyFromClient);

    String getTimeOnServer = Time.getTime();
    String SPValue = safePrimeValue.toString();
    String genValue = generatorValue.toString();
    String sPublicKey = serverPK.toString();
   // long pkFromClient = Long.parseLong(publicKeyFromClient);
    //BigInteger pkC = BigInteger.valueOf(pkFromClient);

   System.out.println("the erver public key is "+sPublicKey);


   out.print("1"+":"+getTimeOnServer+":"+genValue+":"+SPValue+":"+sPublicKey);





   pkClient=sPublicKey.toString();
   SpValue = SPValue.toString();
   sCValue=Long.toString(serverSK);




    } finally {            
        out.close();
    }
}