Voila je me crée une class pour récupéré des info sur internet dans un joli petit applet.
( cours de mes action en bourse, meteo ... quel st on fête .... Inscription a valider dans mon site .... bref )

Voici la class que j'ai crée pour y arrivé :
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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import java.net.*;
import java.io.*;
 
public class http {
	/* Variables */
	private String post_txt = "";
	private String cookies_txt = "";
 
	/* Résultat */
	public String source = "";
 
	/* Fonctions */
	public static void main(String[] args) {
	}
	public void connect_get(String url_txt){
		 BufferedReader reader = null;
		 OutputStreamWriter writer = null;
		 try {
			 //encodage des paramètres de la requête
 
			 //création de la connection
			 URL url = new URL(url_txt);
			 URLConnection conn = url.openConnection();
			 conn.setDoOutput(true);
 
			 //envoi de la requête
			 writer = new OutputStreamWriter(conn.getOutputStream());
			 writer.write(this.cookies_txt);
			 writer.flush();
 
			 //	lecture de la réponse
			 reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
			 String ligne;
			 this.source="";
			 while ((ligne = reader.readLine()) != null) {
				 this.source += ligne + "\n";
			 }
		 }catch (Exception e) {
			 e.printStackTrace();
		 }finally{
			 try{writer.close();}catch(Exception e){}
			 try{reader.close();}catch(Exception e){}
		 }
		 System.out.print("http_get : ");
		 System.out.println(url_txt);
	}
	public void connect_post(String url_txt){
		try {
			// Décomposition de l'url
			URL url = new URL(url_txt);
 
	        // Create a socket to the host
	        String hostname = url.getHost();
	        int port = 80;
	        InetAddress addr = InetAddress.getByName(hostname);
	        Socket socket = new Socket(addr, port);
 
	        // Send header
	        String path = url.getPath();
	        BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF8"));
	        writer.write("POST "+ path +" HTTP/1.0\r\n");
	        writer.write("Content-Length: "+ this.post_txt.length() +"\r\n");
	        writer.write("Content-Type: application/x-www-form-urlencoded\r\n");
	        writer.write("\r\n");
 
	        // Send data
	        writer.write(this.post_txt);//data);
	        writer.write("\r\n");
	        writer.flush();
 
	        // Get response
	        BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
	        String ligne;
	        this.source="";
	        while ((ligne = reader.readLine()) != null) {
	        	this.source += ligne + "\n";
	        }
	        writer.close();
	        reader.close();
	    } catch (Exception e) {
	    	e.printStackTrace();
	    }finally{
	    	//try{writer.close();}catch(Exception e){}
	    	//try{reader.close();}catch(Exception e){}
	    }
	    System.out.print("http_post : ");
	    System.out.println(url_txt);
	}
	public void connect(String url_txt){
		 if ( this.post_txt=="" ) connect_get(url_txt);
		 else connect_post(url_txt);
	}
	public void post_del(){
		this.post_txt = "";
	}
	public void post_add(String name, String value){
		if ( this.post_txt=="" ){
			try {
				this.post_txt  = URLEncoder.encode(name, "UTF-8");
				this.post_txt += "=";
				this.post_txt += URLEncoder.encode(value, "UTF-8");
			}catch (Exception e) {
				 e.printStackTrace();
			}finally{
				//System.out.println("Post : "+ name +" = "+ value);
			}
		}else{
			try {
				this.post_txt += "&";
				this.post_txt += URLEncoder.encode(name, "UTF-8");
				this.post_txt += "=";
				this.post_txt += URLEncoder.encode(value, "UTF-8");
			}catch (Exception e) {
				 e.printStackTrace();
			}finally{
				//System.out.println("Post : "+ name +" = "+ value);
			}
		}
	}
	public  void print_source(){
		System.out.print(this.source);
	}
	public void print_post(){
		System.out.print(this.post_txt);
	}
}
Ma syntaxte http, pour l'envoye des get marche ( cookies non fait )
Mais pas celle des post ... Pourquoi ?

( si je suis mal placé, merci de me le dire ... )