com.yaon.NewServlet.java Source code

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Here is the source code for com.yaon.NewServlet.java

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/*
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 */

package com.yaon;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.StringWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.http.HttpResponse;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.HttpHostConnectException;
import org.apache.http.impl.auth.BasicScheme;
import org.apache.http.impl.client.DefaultHttpClient;

/**
 *
 * @author manpreet.singh
 */
public class NewServlet extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text");
        PrintWriter out = response.getWriter();
        String ip = request.getParameter("ip");
        String port = request.getParameter("port");
        String uname = request.getParameter("uname");
        String pass = request.getParameter("pass");
        StringWriter sw = new StringWriter();
        if ("null".equals(ip) && "null".equals(port) && "null".equals(uname) && "null".equals(pass)) {

            out.println("Null Argument Passed !!");
        } else {
            try {

                DefaultHttpClient httpClient = new DefaultHttpClient();
                HttpPost postRequest = new HttpPost("http://" + ip + ":" + port + "/Yaon/GetInfo");
                postRequest.addHeader(
                        BasicScheme.authenticate(new UsernamePasswordCredentials(uname, pass), "UTF-8", false));
                HttpResponse res = httpClient.execute(postRequest);

                if (res.getStatusLine().getStatusCode() == 401) {
                    throw new Exception("Http Authentication Failed !");
                }

                BufferedReader br = new BufferedReader(new InputStreamReader((res.getEntity().getContent())));

                String output;
                System.out.println("Output from Server.... \n");
                while ((output = br.readLine()) != null) {

                    System.out.println(output);
                    sw.append(output);
                    sw.append("\n");
                }
                httpClient.getConnectionManager().shutdown();

            } catch (HttpHostConnectException e) {
                out.println(e.getMessage());
            } catch (Exception e) {
                out.println(e.getMessage());
            }

            out.println(sw.toString());
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}