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HI brauchen wirklich Hilfe bei dieser Aufgabe. Wie kann ich eine Verbindung von meinem Anmeldefenster zu meinem Hauptfenster weitergeben? Ich habe ein Login-Fenster, in dem ich den Benutzer nach einem ausgewählten Servertyp frage (Beispiel: MySQL, SQL, MySQL Local), Benutzertyp (Ex: Parent, Admin, Student), Datenbankname (der Name der Datenbank, die sie verbinden wollen) to), Servername (Root) und Serverpasswort. Wenn alle Informationen korrekt sind, wird das Hauptfenster geöffnet. Jetzt übergebe ich diese SQL-Verbindung an mein Hauptfenster, damit ich Daten aus meiner Datenbank in meine Tabelle laden kann.JavaFX und FXML: Passing Connection zwischen Szene, Bühne
Alle brauchen Hilfe bei der Verbindung zu meiner anderen Klasse oder Szene, Bühne. Dies ist in 3 Tagen fällig. Wenn Sie den FXML-Code benötigen, kann ich sie auch senden. Bitte, bitte ich wirklich Hilfe brauchen Verbindung zu passieren
Hier ist meine Verbindungscode ist
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Enumeration;
import java.util.Scanner;
import javafx.scene.control.Alert;
public class Connections {
private static Alert al;
public static final int MYSQLLOCAL = 1;
public static final int MYSQLREMOTE= 2;
public static final int SQLSERVERLOCAL = 3;
public static final int SQLSERVER = 4;
public static final int UNKNOWN = -1;
public static java.sql.Connection getconnect(int which, String name, String uid, String pass) {
Scanner scan = new Scanner(System.in);
java.sql.Connection connection = null;
String driver = getDriver(which);
String url = getURL(which, name);
System.out.println(driver);
System.out.println(url);
try
{ // load the driver
Class.forName(driver).newInstance();
System.out.println("Known drivers that are registered:");
Enumeration enumer = DriverManager.getDrivers();
while (enumer.hasMoreElements())
System.out.println(enumer.nextElement());
}
catch(ClassNotFoundException | InstantiationException | IllegalAccessException e)
{
return null;
}
try
{
connection = DriverManager.getConnection(url, uid, pass);
System.out.println("Connection pass");
}
catch(Exception e)
{
return null;
}
return connection;
}
public static Connection connect(int which, String name) {
java.sql.Connection connection = null;
String driver = getDriver(which);
String url = getURL(which, name);
System.out.println(driver);
System.out.println(url);
try { // load the driver
Class.forName(driver).newInstance();
System.out.println("Known drivers that are registered:");
Enumeration enumer = DriverManager.getDrivers();
while (enumer.hasMoreElements())
System.out.println(enumer.nextElement());
}
catch(ClassNotFoundException | InstantiationException | IllegalAccessException e)
{
return null;
}
try {
connection = DriverManager.getConnection(url, "", "");
System.out.println("Connection successful!");
}
catch(SQLException e)
{
al = new Alert(Alert.AlertType.INFORMATION);
al.setTitle("Error");
al.setHeaderText(null);
al.setContentText("Login failed. Please make sure all information"
+ " are correct");
al.showAndWait();
return null;
}
return connection;
}
public static String getDriver(int num) {
switch (num) {
case SQLSERVER:
return "com.microsoft.sqlserver.jdbc.SQLServerDriver";
case MYSQLLOCAL:
return "com.mysql.jdbc.Driver";
case MYSQLREMOTE:
return "com.mysql.jdbc.Driver";
case SQLSERVERLOCAL:
return "com.microsoft.sqlserver.jdbc.SQLServerDriver";
default:
return "error";
}
}
public static String getURL(int num, String names) {
Scanner scan = new Scanner(System.in);
String name = names;
switch (num) {
case SQLSERVER:
{
if (name.equals("default"))
return "jdbc:sqlserver://164.106.3.23:9012";
else
return "jdbc:sqlserver://164.106.3.23:9012" + "; databaseName=" + name;
// change this to match your ODBC connection name
}
case MYSQLLOCAL:
{
return "jdbc:mysql://localhost:3306/"+name;
}
case MYSQLREMOTE:
{
return "jdbc:mysql://164.106.3.22:3098/"+ name;
}
default:
return "error";
}
}
}
Hier ist meine FXML Controller für die Anmeldung
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.Event;
import javafx.fxml.*;
import javafx.scene.*;
import javafx.scene.control.*;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.Pane;
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 {
Parent giantsAdmin = FXMLLoader.load(getClass().getResource("GiantsAdmin.fxml"));
Scene gAdminScene = new Scene(giantsAdmin);
Stage gAdminStage = (Stage) ((Node) event.getSource()).getScene().getWindow();
gAdminStage.hide();
gAdminStage.setScene(gAdminScene);
gAdminStage.setTitle("Giants Admin");
gAdminStage.getScene().getStylesheets().add(getClass().getResource("style.css").toExternalForm());
gAdminStage.show();
}
catch (Exception e) {
}
}
case "Player":
if (connectCheck()) {
try {
Parent giantsPlayer = FXMLLoader.load(getClass().getResource("GiantsPlayer.fxml"));
Scene gPlayerScene = new Scene(giantsPlayer);
Stage gPlayerStage = (Stage) ((Node) event.getSource()).getScene().getWindow();
gPlayerStage.hide();
gPlayerStage.setScene(gPlayerScene);
gPlayerStage.setTitle("Giants Playe");
gPlayerStage.getScene().getStylesheets().add(getClass().getResource("style.css").toExternalForm());
gPlayerStage.show();
}
catch (Exception e) {
}
}
}
}
}
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;
}
}
Hier ist meine hier ist der Controller für meine Hauptfenster, wo ich die Tabelle habe
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;
@FXML
private TextField aName;
@FXML
private TextField aPosition;
@FXML
private TextField aSchool;
@FXML
private TextField aAge;
@FXML
private TextField aWar;
@FXML
private Button clearB;
@FXML
private Button addB;
@FXML
private TableColumn<?, ?> rank;
@FXML
private TableColumn<?, ?> name;
@FXML
private TableColumn<?, ?> position;
@FXML
private TableColumn<?, ?> school;
@FXML
private TableColumn<?, ?> age;
@FXML
private TableColumn<?, ?> war;
@FXML
private TextField qSearch;
@FXML
private Button search;
@FXML
private Button singout;
@FXML
private Button delete;
@FXML
private ComboBox<String> serverType;
@FXML
private TextField dbName;
@FXML
private TextField serverName;
@FXML
private TextField sPassword;
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 {
((Node)event.getSource()).getScene().getWindow().hide();
Stage stage = new Stage();
//stage.hide();
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();
}
}