如何将请求发送到已登录站点的其他页面

OutputStreamWriter request = null;
    url = new URL(\"http://site.com/Login\"); 
    String response = null; 
    EditText user = (EditText)this.findViewById(R.id.user);
    EditText pass = (EditText)this.findViewById(R.id.pass);
    String parameters ;

    try {
        System.setProperty(\"http.keepAlive\", \"true\");

        url = new URL(\"http://site.com/Home/Login\"); 
        httppost = (HttpURLConnection) url.openConnection();
        httppost.setDoInput(true);
        httppost.setDoOutput(true);
        httppost.setRequestMethod(\"POST\");
        httppost.setRequestProperty(\"User-Agent\", \"Mozilla/5.0 Linux U Android 2.3.3 tr-tr HTC_DesireHD_A9191 Build/GRI40 AppleWebKit/533.1 KHTML, like Gecko Version/4.0 Mobile Safari/533.1\");
        httppost.setRequestProperty(\"Accept_Language\", \"en-US\");
        httppost.setRequestProperty(\"Connection\", \"Keep-Alive\"); 
        httppost.setRequestProperty(\"Content-Type\", \"application/x-www-form-urlencoded\");

        request = new OutputStreamWriter(httppost.getOutputStream());

        parameters = \"username=\"+user.getText()+\"&password=\"+pass.getText();
        request.write(parameters);
        request.flush();
        request.close(); 

        String line = \"\";               
        InputStreamReader isr = new InputStreamReader(httppost.getInputStream());
        BufferedReader reader = new BufferedReader(isr);
        StringBuilder sb = new StringBuilder();
        while ((line = reader.readLine()) != null)
        {
            sb.append(line + \"\\n\");
        }
        response = sb.toString();

        Toast.makeText(this,response, Toast.LENGTH_LONG).show();             

        isr.close();
        reader.close();

    } catch (Exception e) {
        e.printStackTrace();
        Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
    }