在JavaFX FXML应用程序中将控制台输出显示为TextArea

<TextArea fx:id="consoleTextArea" />

import javafx.fxml.FXML;
import javafx.scene.control.TextArea;

public class Controller {
    @FXML
    private TextArea consoleTextArea;

    public void initialize() {
        // 重定向控制台输出到TextArea
        Console console = new Console(consoleTextArea);
        console.redirectSystemOut();
        console.redirectSystemErr();
    }
}

class Console {
    private TextArea textArea;

    public Console(TextArea textArea) {
        this.textArea = textArea;
    }

    public void redirectSystemOut() {
        OutputStream out = new OutputStream() {
            @Override
            public void write(int b) throws IOException {
                appendText(String.valueOf((char) b));
            }

            @Override
            public void write(byte[] b, int off, int len) throws IOException {
                appendText(new String(b, off, len));
            }
        };

        System.setOut(new PrintStream(out, true));
    }

    public void redirectSystemErr() {
        OutputStream err = new OutputStream() {
            @Override
            public void write(int b) throws IOException {
                appendText(String.valueOf((char) b));
            }

            @Override
            public void write(byte[] b, int off, int len) throws IOException {
                appendText(new String(b, off, len));
            }
        };

        System.setErr(new PrintStream(err, true));
    }

    private void appendText(String text) {
        Platform.runLater(() -> textArea.appendText(text));
    }
}

<AnchorPane fx:controller="com.example.Controller">

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class Main extends Application {
    @Override
    public void start(Stage primaryStage) throws Exception {
        Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
        primaryStage.setTitle("JavaFX FXML Application");
        primaryStage.setScene(new Scene(root, 800, 600));
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}