Question

在setController上保持冻结状态。用户和密码输入时，它不会加载场景

import java.io.IOException;
import java.sql.*;
import javafx.collections.*;
import javafx.event.Event;
import javafx.fxml.*;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.*;
import javafx.stage.Stage;

public class GiantsLoginController {

public String dataName, serverName, password;
public int num;

private Connection connect = null;
private Statement stmt = null;

private boolean userPass, connected;

private Connections connection;


@FXML
private ComboBox<String> sType;
@FXML
public TextField dbName;
@FXML
private TextField sName;
@FXML
private Button loginB;
@FXML
private PasswordField sPassword;
@FXML
private Pane paneL;
@FXML
private GridPane gPane;
@FXML
private ComboBox<String> uType;


ObservableList<String> sLists = FXCollections.observableArrayList("MySQL LOCAL", 
        "MYSQL REMOTE", "SQL SERVER LOCAL", "SQL SERVER");
ObservableList<String> uList = FXCollections.observableArrayList("Player", 
        "Admin");



@FXML
public void initialize() {
    sType.setItems(sLists);
    uType.setItems(uList);
}

@FXML
public void loginBClick (Event event) {
    if (isAllFieldFillup()) {

        switch(uType.getValue().trim()) {
            case "Admin":
                if (connectCheck()) {
                    try {

                          changeStage(GiantsLogin.getPrimaryStage());

                    }
                    catch (Exception e) {

                    }
                }
            case "Player": 
                if (connectCheck()) {
                    try {

                    }
                    catch (Exception e) {

                    }
                }
        }
    }
}

public void changeStage(Stage stage) throws IOException {
    GiantsAdminController controller = new GiantsAdminController("Hello World!");
    FXMLLoader loader = FXMLLoader.load(getClass().getResource("GiantsAdmin.fxml"));
    loader.setController(controller);
    stage.hide();
    stage.setScene(new Scene((Pane) loader.load()));
    stage.show();
}

public void closeConnection () {

    if (connect != null) {
        try {
            stmt.close();
            connect.close();
        }
        catch (SQLException e) {

        }
    }
}

public boolean connectCheck() {
    connected = false;

    dataName = dbName.getText();
    serverName = sName.getText();
    password = sPassword.getText();


    switch (sType.getValue()) {
        case "MySQL LOCAL":
            num = 1;
            break;
        case "MYSQL REMOTE":
            num = 2;
            break;
        case "SQL SERVER LOCAL":
            num = 3;
            break;
        case "SQL SERVER":
            num = 4;
            break;
        default:

    }

    if (connect == null) {
        connect = Connections.getconnect(num, dataName, serverName, password);
    }

    if (connect == null ) {
        System.out.println("Still no connection");
    }

    if (stmt == null) {
        try {
            stmt = connect.createStatement();
            connected = true;
        } catch (SQLException e) {
            Alert notify = new Alert(Alert.AlertType.INFORMATION);
            notify.setTitle("Blank filed");
            notify.setHeaderText(null);
            notify.setContentText("Incorrect login.");
            notify.showAndWait();

            connected = false;
        }


    }
    return connected;
}

private boolean isAllFieldFillup() {
    boolean allInfo;
    if (sType.getValue().equals("server type") && dbName.getText().isEmpty()
            && sName.getText().isEmpty() && sPassword.getText().isEmpty()) {
        Alert notify = new Alert(Alert.AlertType.INFORMATION);
        notify.setTitle("Blank filed");
        notify.setHeaderText(null);
        notify.setContentText("You are missing some information.");
        notify.showAndWait();

        allInfo = false;
    }
    else {
        allInfo = true;
    }
    return allInfo;
}

}

这是我打开一个新场景并设置我的控制器所以我可以能够在新场景中访问它。但是当我把它放在一边时，它就被冻结了用户名和密码，然后单击“登录”。

public void changeStage(Stage stage) throws IOException {
    GiantsAdminController controller = new GiantsAdminController("Hello World!");
    FXMLLoader loader = FXMLLoader.load(getClass().getResource("GiantsAdmin.fxml"));
    loader.setController(controller);
    stage.hide();
    stage.setScene(new Scene((Pane) loader.load()));
    stage.show();
}

这是我调用changeStage方法的方法

public void loginBClick (Event event) {
    if (isAllFieldFillup()) {

        switch(uType.getValue().trim()) {
            case "Admin":
                if (connectCheck()) {
                    try {

                          changeStage(GiantsLogin.getPrimaryStage());

                    }
                    catch (Exception e) {

                    }
                }
            case "Player": 
                if (connectCheck()) {
                    try {

                    }
                    catch (Exception e) {

                    }
                }
        }
    }
}

这是我的主要课程

import java.io.IOException;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.*;

public class GiantsLogin extends Application {

private static Stage stage;

@Override
public void start(Stage stage) throws IOException {
    setPrimaryStage(stage);
    Parent root = FXMLLoader.load(getClass().getResource("GiantsLogin.fxml"));
    Scene scene = new Scene(root);
    scene.getStylesheets().add(getClass().getResource("style.css").toExternalForm());
    stage.setScene(scene);
    stage.setTitle("Giants Login");
    stage.show();
}

public static void setPrimaryStage(Stage primaryStage) {
    stage = primaryStage;
}

public static Stage getPrimaryStage() {
    return stage;
}
public static void main(String[] args) {
    launch(args);
}

}

这是我的第二个窗口：这是应该打开的窗口当用户名和传递正确时。

import java.io.IOException;
import java.sql.Statement;
import javafx.collections.*;
import javafx.event.Event;
import javafx.fxml.*;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.stage.Stage;

public class GiantsAdminController {
@FXML
private Button connect = null;
private boolean connected;

private Statement stmt;

@FXML
private TextField aRank;

public GiantsAdminController(String message) {
    System.out.println("You said: " + message);
}

public GiantsAdminController() {
}

ObservableList<String> sLists = FXCollections.observableArrayList("MySQL LOCAL", 
        "MYSQL REMOTE", "SQL SERVER LOCAL", "SQL SERVER");
@FXML
public void initialize() {
    serverType.setItems(sLists);
}

@FXML
public void clearBClick (Event event) {
    aRank.clear();
    aName.clear();
    aPosition.clear();
    aSchool.clear();
    aAge.clear();
    aWar.clear();
}


@FXML
public void SingOutClick(Event event) throws IOException {

    Parent giantsLogin = FXMLLoader.load(getClass().getResource("/giants/GiantsLogin.fxml"));

    Scene gLScene = new Scene(giantsLogin);
    gLScene.getStylesheets().add(getClass().getResource("style.css").toExternalForm());
    stage.setScene(gLScene); 
    stage.show();
}
 }

我已经尝试了一切来解决这个问题，但没有运气。

Answer 1

我认为问题是在FXMLLoader上使用静态加载函数。尝试此修改（未经测试）。

public void changeStage(Stage stage) throws IOException {
    GiantsAdminController controller = new GiantsAdminController("Hello World!");
    FXMLLoader loader = new FXMLLoader(getClass().getResource("GiantsAdmin.fxml"));
    loader.setController(controller);
    stage.hide();
    stage.setScene(new Scene((Pane) loader.load()));
    stage.show();
}

JavaFX，FXMLLoader.setController（控制器）不加载场景

1 个答案: