I'm here with my JavaFx app.
I have two class:
I start these class in two different Thread. Because server is blockable.
- My UI class ( Called Main ( I know i need to change this)).
- A Server class ( Called Serveur )).
In my Server Class when i receive bytes with a ServerSocket.
I need to update a TextFlow (called flowMessafe) in my UI class : with flowMessage.getChildren().add(); I can update this TextFlow without problem in my UI class. But i my Server class i can't.
EDIT : I try all the things, but i think i found a big problem. I update the wrong instance of my javafx app. I change the code with current code
He is a part of my server code
My Server Constructor
public Serveur(Mediator med){
this.med=med;
try {
lancer();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Loop to catch message or file.
for(;;){
try {
Thread.sleep(1L);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("Attente de communication ...");
try {
socket = serverSocket.accept();
} catch (IOException ex) {
System.out.println("Can't accept client connection. ");
}
try {
in = socket.getInputStream();
} catch (IOException ex) {
System.out.println("Can't get socket input stream. ");
}
byte[] bytes = new byte[16*1024];
while ((count = in.read(bytes)) > 0) {}
String mode = new String(bytes);
String[] split = mode.split(";");
if(split[0].compareTo("Message")==0){
recevoirMessage();
} else if(split[0].compareTo("Fichier")==0){
recevoirFichier(split[2]);
}
in.close();
socket.close();
}
When i receive a message i go to this function :
public void recevoirMessage() {
output = new ByteArrayOutputStream();
try {
socket = serverSocket.accept();
} catch (IOException ex) {
System.out.println("Can't accept client connection. ");
}
try {
in = socket.getInputStream();
} catch (IOException ex) {
System.out.println("Can't get socket input stream. ");
}
byte[] bytes = new byte[16*1024];
try {
while ((count = in.read(bytes)) > 0) {}
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
System.out.println("Message reçus");
String recu = "Message : "+new String(bytes);
System.out.println(recu);
Platform.runLater(() -> {
Label mes = new Label(new String(bytes));
med.cli.flowMessage.getChildren().add(mes);
});
try {
in.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
And in my main i have only empty constructor like
public Main(){}
In my UI class i have this to create my App :
'@Override
public void start(Stage primaryStage) {
try {
this.pStage = primaryStage;
this.pStage = new Stage();
idPane = new BorderPane();
Parent page;
page = FXMLLoader.load(getClass().getResource("/application/application.fxml"));
this.pStage.setTitle("Messagerie");
Scene scene = new Scene(page);
flowMessage = new TextFlow();
idContenuMessage= new ChoiceBox<String>();
scrollPane= new ScrollPane();
//flowMessage = new TextFlow();
String css = this.getClass().getResource("application.css").
toExternalForm();
scene.getStylesheets().clear();
scene.getStylesheets().add(css);
this.pStage.setScene(scene);
this.pStage.setResizable(false);
this.pStage.show();
this.pStage.setOnCloseRequest(event -> {
Serveur.close();
});
} catch (IOException e) {
e.printStackTrace();
}
}'
And i don't know how to update my UI TextFlow in my server Class.
I saw different things like the Mediator Pattern, i try this but it didn't work ( maybe i do something wrong ).
I start my app with this class :
package communication;
import application.Main;
import javafx.application.Application;
import javafx.stage.Stage;
public class Mediator extends Application implements Runnable {
private Serveur serv;
public Main cli;
public Thread thread;
private Stage primaryStage;
public static void main(String args[]){
launch(args);
}
public Mediator(){
cli = new Main();
thread = new Thread(this,"serv");
thread.start();
}
@Override
public void run() {
setServ(new Serveur(this));
}
@Override
public void start(Stage stage) throws Exception {
primaryStage = stage;
cli.start(primaryStage);
}
public Serveur getServ() {
return serv;
}
public void setServ(Serveur serv) {
this.serv = serv;
}
}
Thanks for Helping.
I would use Platform.runLater() to put your GUI changes on the Javafx application thread, e.g.
}