Problème lors de l'envoi des données json à partir d'une applict

• Tu voudrais supprimer les valeurs qui sont à null ?
• Tu es censé avoir d'autres valeurs que celles qui sont null ?

package SWibInfo;

import java.io.BufferedReader;

import java.io.File;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.util.Scanner;
import java.util.Timer;
import java.util.TimerTask;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Image;
import java.awt.Insets;
import java.awt.Toolkit;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.util.Scanner;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.border.EmptyBorder;
import javax.swing.filechooser.FileSystemView;


import org.omg.CORBA.portable.InputStream;


import webservice.Cpu;

public class Mainn extends JFrame {
	private JLabel label = new JLabel("Veuiller saisir le code � barre de votre machine: ");
	private JTextField textField = new JTextField(20);
	private JButton button = new JButton("OK");

	public static void infoMachine(String str){
		InetAddress ip;
	    try {
	    	

	    //DESKTOP-8DP4E2A
	        ip = InetAddress.getLocalHost();
	       String hostName=  ip.getHostName();
	        
	        if(str.equals(hostName)){
		        System.out.println("Current host name : " + hostName);
		        String ipAdress=  ip.getHostAddress();
		        System.out.println("Current IP address : " + ipAdress);
		        String nameOS= System.getProperty("os.name");
		        System.out.println("Operating system Name=>"+ nameOS);
		        String osType= System.getProperty("os.arch");
		        System.out.println("Operating system type =>"+ osType);
		        String osVersion= System.getProperty("os.version");
		        System.out.println("Operating system version =>"+ osVersion);
		        
		        
		     	String args = "{\"nom\":\""+hostName+"\","
						+ "\"host_name\":\""+hostName+"\","
						+ "\"os_name\":\""+nameOS+"\","
						+ "\"os_type\":\""+osType+"\","
						+ "\"os_version\":\""+osVersion+"\""
						+ "}";
		    	
		        Cpu.main(args);
		        
		        
        	}else{
	        	System.out.println("Erreur: verifier votre code");
	        }
	  
    	} catch (UnknownHostException e) {
    		e.printStackTrace();	  
	    } catch (SocketException e){	  
	        e.printStackTrace();
	    }
	    catch (Exception e){	  
	        e.printStackTrace();	  
	    }
	}
	
	
	public Mainn(){
	
		super("SWIB INFO");

		// sets layout manager
		setLayout(new GridBagLayout());

		GridBagConstraints constraint = new GridBagConstraints();
		constraint.insets = new Insets(10, 10, 10, 10);
		constraint.gridx = 0;
		constraint.gridy = 0;

		add(label, constraint);

		constraint.gridx = 1;
		add(textField, constraint);

		constraint.gridx = 0;
		constraint.gridwidth = 2;
		constraint.gridy = 1;

		add(button, constraint);
		button.addActionListener(new java.awt.event.ActionListener() {
	           @Override
	           public void actionPerformed(java.awt.event.ActionEvent evt) {
	        	   String str = textField.getText();
	        	   JLabel label17 = new JLabel("Your text here");
		try{
			  int MINUTES = 15; // The delay in minutes
			  Timer timer = new Timer();
			   timer.schedule(new TimerTask() {
			      @Override
			      public void run() {
	    infoMachine(str);
			      }
			   }, 0, 1000 * 60 * MINUTES);
		  }catch(Exception e){

				e.printStackTrace();}
	           }
		});
	        // adds window event listener
	   		addWindowListener(new WindowAdapter() {
	   			public void windowClosing(WindowEvent event) {
	   				int reply = JOptionPane.showConfirmDialog(Mainn.this,
	   						"Are you sure you want to quit?",
	   						"Exit",
	   						JOptionPane.YES_NO_OPTION,
	   						JOptionPane.QUESTION_MESSAGE);
	   				if (reply == JOptionPane.YES_OPTION) {
	   					dispose();
	   				} else {
	   					return;
	   				}
	   			}
	   		});

	   		// sets icon image
	   		String iconPath ="/SWibInfo/Vector_by_Karpiu23.png";
	   		Image icon = new ImageIcon(getClass().getResource(iconPath)).getImage();
	   		setIconImage(icon);

	   		pack();

	   		// centers on screen
	   		setLocationRelativeTo(null);

	   		setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

	   		setVisible(true);
	   	}


	
	
	   	public static void main(String[] args) {
	   		SwingUtilities.invokeLater(new Runnable() {
	   			@Override
	   			public void run() {
	   				new Mainn();
	   				
	   			
	   			}
	   		});	
	    }
	   	}
	   

package webservice;


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

public class Cpu {

	public static void main(String args) {

		try {
			
			
			// send as http get request
			URL url = new URL("http://127.0.0.1/parc/index.php?order="+args);
			URLConnection conn = url.openConnection();

			// Get the response
			BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
			String line;
			while ((line = rd.readLine()) != null) {
			System.out.println(line);
			}
			rd.close();
			} catch (Exception e) {
			e.printStackTrace();
			}
		
		
	}

}

<?php
header('Content-type: application/json');

$order = $_GET["order"];

$obj = json_decode(stripslashes(html_entity_decode($order)),true);
var_dump($obj);
$nom=$obj['nom'];
$host_name = $obj['host_name'];
$os_name = $obj['os_name'];
$os_type = $obj['os_type'];
$os_version = $obj['os_version'];

// Prints "bar"
echo $obj['nom'];
$array = array("nom" => $nom, "host_name" => $host_name, "os_name" => $os_name, "os_type" => $os_type, "os_version" => $os_version);
echo json_encode($array);
		echo json_last_error_msg();
		echo json_last_error();