正确的HTTP客户端方法

Question

I'm trying to run a method that I created, but it won't run more than once. I think my problem is that I'm never releasing the connection.

I tried to follow this tutorial but some of the methods don't work and I don't know why. http://hc.apache.org/httpclient-3.x/tutorial.html

public String sendMessage(String username, Editable message){

        BufferedReader in = null;
        String data = null;
        try{


            HttpClient client = new DefaultHttpClient();
            URI website = new URI("http://abc.com/user_send.php?username="+username+"&message="+message);

            HttpPost post_request = new HttpPost();
            post_request.setURI(website);


            HttpGet request = new HttpGet();

            request.setURI(website);
            //executing actual request
                HttpResponse response = client.execute(request);

            in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
            StringBuffer sb = new StringBuffer("");
            String l = "";
            String nl = System.getProperty("line.separator");
            while ((l = in.readLine()) != null) {
                sb.append(l);

            }
            in.close();
            data = sb.toString();
            return data;
        }catch (Exception e){
            return "ERROR";
        }

        }

Answer 1

First of all, do you know that the post_request never get used? Only the GET method ( request ) is send to the server.

Anyway, here is my code which exactly copies yours (only Editable is String in my case) and should be compilable and runnable as is. For me it works. Every time I click the button the GET request is performed.

package test;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URI;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;


public class NewJFrame extends javax.swing.JFrame {

  /** Creates new form NewJFrame */
  public NewJFrame() {
    initComponents();
  }


  public String sendMessage(String username, String message){

    BufferedReader in = null;
    String data = null;
    try{


        HttpClient client = new DefaultHttpClient();
        URI website = new URI("http://abc.com/user_send.php?username="+username+"&message="+message);

        //!!!this is never used
        HttpPost post_request = new HttpPost();
        post_request.setURI(website);


        HttpGet request = new HttpGet();

        request.setURI(website);
        //executing actual request
            HttpResponse response = client.execute(request);

        in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
        StringBuffer sb = new StringBuffer("");
        String l = "";
        String nl = System.getProperty("line.separator");
        while ((l = in.readLine()) != null) {
            sb.append(l);

        }
        in.close();

        data = sb.toString();
        System.out.println("Success:\n" + data);


        return data;
    }catch (Exception e){
        return "ERROR";
    }

  }


  @SuppressWarnings("unchecked")
  private void initComponents() {

    jButton1 = new javax.swing.JButton();

    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

    jButton1.setText("jButton1");
    jButton1.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            jButton1ActionPerformed(evt);
        }
    });

    org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
    getContentPane().setLayout(layout);
    layout.setHorizontalGroup(
        layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
        .add(layout.createSequentialGroup()
            .add(64, 64, 64)
            .add(jButton1)
            .addContainerGap(239, Short.MAX_VALUE))
    );
    layout.setVerticalGroup(
        layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
        .add(layout.createSequentialGroup()
            .add(58, 58, 58)
            .add(jButton1)
            .addContainerGap(213, Short.MAX_VALUE))
    );

    pack();
  }// </editor-fold>

  private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
    sendMessage("ondra", "textX");
  }

  /**
   * @param args the command line arguments
   */
  public static void main(String args[]) {
    //</editor-fold>

    /* Create and display the form */
    java.awt.EventQueue.invokeLater(new Runnable() {

        public void run() {
            new NewJFrame().setVisible(true);
        }
    });
  }

  private javax.swing.JButton jButton1;

}