我在这里使用我的JavaFx应用程序。
我有两节课:
我在两个不同的Thread中启动这些类。因为服务器是可阻止的。
当我使用ServerSocket接收字节时,在我的服务器类中。
我需要在UI类中更新TextFlow(称为flowMessafe): with flowMessage.getChildren()。add();我可以在我的UI类中更新此TextFlow而不会出现问题。 但我的服务器类我不能。
编辑:我尝试了所有的事情,但我认为我发现了一个大问题。我更新了我的javafx应用程序的错误实例。我用当前代码更改代码他是我服务器代码的一部分
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();
}
当我收到消息时,我会转到此功能:
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();
}
}
在我的主要内容中我只有像
这样的空构造函数 public Main(){}
在我的UI类中,我有这个来创建我的应用程序:
'@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();
}
}'
我不知道如何在我的服务器类中更新我的UI TextFlow。
我看到了不同的东西,比如Mediator Pattern,我试过这个,但它没有用(也许我做错了)。
我用这个课开始我的应用程序:
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;
}
}
感谢帮助。
答案 0 :(得分:0)
我会使用Platform.runLater()将您的GUI更改放在Javafx应用程序线程上,例如。
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);
//inserted here
Platform.runLater(new Runnable() {
@Override public void run() {
//HERE I WANT TO UPDATE MY TEXTFLOW
}
});
try {
in.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
答案 1 :(得分:0)
首先TextFlow
没有text属性,因此您无法为其设置该值。将Text
对象添加到文本流:
Text text = new Text();
flowMessage = new TextFlow(text);
然后创建StringProperty
,将其绑定到Text
组件textProperty
并在Server类中更新此值。
申请类:
public class Mediator extends Application implements Runnable {
private Serveur serv;
public Main cli;
private StringProperty textProperty = new SimpleStringProperty("text");
public Thread thread;
private Stage primaryStage;
public static void main(String args[]){
launch(args);
}
public Mediator(){
cli = new Main(this,textProperty);
thread = new Thread(this,"serv");
thread.start();
}
@Override
public void run() {
serv = new Serveur(this,textProperty);
}
@Override
public void start(Stage stage) throws Exception {
primaryStage = stage;
cli.start(primaryStage);
}
}
将textProperty
传递给Main
和Serveur
类。
cli = new Main(this, textProperty);
serv = new Serveur(this, textProperty);
将文本属性绑定到Text
组件:
text.textProperty().bind(textProperty);
最后在textProperty
类中的JavaFX Application Thread中更新Serveur
:
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);
//inserted here
Platform.runLater(new Runnable() {
@Override public void run() {
//HERE I WANT TO UPDATE MY TEXTFLOW
textProperty.setValue(new String(bytes));
}
});
try {
in.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}