我遇到了一个大问题，确保所有文件中没有错误，当我运行JavaFX Application时，我得到一个小窗口包含“运行应用程序时出现异常”。输出突出显示问题出在Main Class中，所以这就是我在Main类中的内容：
package amnet23;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class AmNet23 extends Application {
@Override
public void start(Stage stage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("WorkSpace.fxml"));
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}
here's the Controller class:
package amnet23;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.Cursor;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Hyperlink;
import javafx.scene.control.Label;
import javafx.scene.control.Tab;
import javafx.scene.control.TabPane;
import javafx.scene.control.TextField;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import javafx.scene.layout.AnchorPane;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javafx.stage.Modality;
import javafx.stage.Stage;
import javafx.stage.WindowEvent;
import javax.swing.text.html.HTMLEditorKit;
/**
*
* @author Ahmed
*/
public class FXMLDocumentController implements Initializable {
Stage tt;
//anchor
AnchorPane ancpa;
//labels fxid
Label labeln1;
Label labeln2;
Label labelslo; // text field
Button labelsear; // help
Button labelpop; // about
Label labeloren; // nejma
Label labelpros; // search
Label labelno;
// text field
TextField text11;
//buttons fxid
//button links
Button but1;
Button but2;
Button but3;
Button but4;
Button but5;
Button but6;
Button but7;
Button but8;
Button but9;
Button but10;
Button but11;
Button but12;
Button but13;
Button but14;
Button but15;
Button but16;
// other buttons
Button butser;
Button butnext;
Button butprev;
Button butref;
Button buth;
Button butg;
Button but1f;
Button butnej;
Button butab;
// tabpanes
TabPane tabpane1;
Tab tab1;
Tab tab2;
Tab tab3;
Tab tab4;
Tab tab5;
Tab tab6;
Tab tab7;
Tab tab8;
Tab tab9;
// wabpanes
WebView web1;
WebView web2;
WebView web3;
WebView web4;
WebView web5;
WebView web6;
WebView web7;
WebView web8;
WebView web9;
//other window (chooser)
@FXML
Label que;
@FXML
Button tab1b;
Button tab2b;
Button tab3b;
Button tab4b;
Button tab5b;
Button tab6b;
Button tab7b;
Button tab8b;
Button tab9b;
@FXML
AnchorPane panoo;
@FXML
private void searchButton (ActionEvent evt) throws IOException {
Stage stage = new Stage();
Parent root = FXMLLoader.load(getClass().getResource("Choose.fxml"));
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
text11.setOnKeyTyped(new EventHandler<KeyEvent>(){
public void hendeller (KeyEvent evty) throws IOException{
if (evty.getCode() == KeyCode.ENTER){
Stage stage = new Stage();
Parent root = FXMLLoader.load(getClass().getResource("Choose.fxml"));
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
}
}
@Override
public void handle(KeyEvent t) {
}
});
}
@FXML
private void tabfirst (ActionEvent ee) throws IOException { // for tha Chooser frame text.
String hh = text11.getText();
Socket socket = new Socket();
try {
web1.setVisible(true);
//open cursor
panoo.setCursor(Cursor.WAIT);
que.setCursor(Cursor.WAIT);
//add
ancpa.setCursor(Cursor.WAIT);
web1.setCursor(Cursor.WAIT);
web2.setCursor(Cursor.WAIT);
web3.setCursor(Cursor.WAIT);
web4.setCursor(Cursor.WAIT);
web5.setCursor(Cursor.WAIT);
web6.setCursor(Cursor.WAIT);
web7.setCursor(Cursor.WAIT);
web8.setCursor(Cursor.WAIT);
web9.setCursor(Cursor.WAIT);
//do work
URL url = new URL (hh);
url.getContent();
WebEngine myWebEngine = web1.getEngine();
myWebEngine.load(url.toExternalForm());
//close the window chooser
Stage stage = new Stage();
Parent root = FXMLLoader.load(getClass().getResource("Choose.fxml"));
Scene scene = new Scene(root);
stage.setOnCloseRequest(new EventHandler<WindowEvent>() {
@Override public void handle(WindowEvent t) { } });
//close cursor
ancpa.setCursor(Cursor.DEFAULT);
web1.setCursor(Cursor.DEFAULT);
web2.setCursor(Cursor.DEFAULT);
web3.setCursor(Cursor.DEFAULT);
web4.setCursor(Cursor.DEFAULT);
web5.setCursor(Cursor.DEFAULT);
web6.setCursor(Cursor.DEFAULT);
web7.setCursor(Cursor.DEFAULT);
web8.setCursor(Cursor.DEFAULT);
web9.setCursor(Cursor.DEFAULT);
}
catch (IOException e){
final Stage stg = new Stage();
stg.initModality(Modality.APPLICATION_MODAL);
stg.initOwner(stg);
stg.setTitle("Cannot connect to the internet /n Please Verify your connection internet");
labelno.setText("Cannot connect to the internet...");
//close chooser
Stage stage = new Stage();
Parent root = FXMLLoader.load(getClass().getResource("Choose.fxml"));
stage.setOnCloseRequest(new EventHandler<WindowEvent>() {
@Override public void handle(WindowEvent t) { } });
//set cursor
ancpa.setCursor(Cursor.DEFAULT);
web1.setCursor(Cursor.DEFAULT);
web2.setCursor(Cursor.DEFAULT);
web3.setCursor(Cursor.DEFAULT);
web4.setCursor(Cursor.DEFAULT);
web5.setCursor(Cursor.DEFAULT);
web6.setCursor(Cursor.DEFAULT);
web7.setCursor(Cursor.DEFAULT);
web8.setCursor(Cursor.DEFAULT);
web9.setCursor(Cursor.DEFAULT);
} finally{
try{ socket.close(); } catch (Exception e){ }
}
}
@FXML
private void err (ActionEvent eer) {
web1.setVisible(true);
ancpa.setCursor(Cursor.WAIT);
}
@Override
public void initialize(URL url, ResourceBundle rb) {
}
}
这是StuckTrace：
ant -f C:\\Users\\Midoo\\Documents\\NetBeansProjects\\AmNet23 jfxsa-run
init:
Deleting: C:\Users\Midoo\Documents\NetBeansProjects\AmNet23\build\built-jar.properties
deps-jar:
Updating property file: C:\Users\Midoo\Documents\NetBeansProjects\AmNet23\build\built-jar.properties
compile:
Detected JavaFX Ant API version 1.2
jfx-deployment:
jar:
Copying 12 files to C:\Users\Midoo\Documents\NetBeansProjects\AmNet23\dist\run1416917689
jfx-project-run:
Executing C:\Users\Midoo\Documents\NetBeansProjects\AmNet23\dist\run1416917689\AmNet23.jar using platform C:\Program Files\Java\jdk1.7.0_65\jre/bin/java
java.lang.IllegalAccessException: Class javafx.fxml.FXMLLoader$ValueElement can not access a member of class amnet23.FXMLDocumentController with modifiers ""
file:/C:/Users/Midoo/Documents/NetBeansProjects/AmNet23/dist/run1416917689/AmNet23.jar!/amnet23/WorkSpace.fxml:15
at javafx.fxml.FXMLLoader$ValueElement.processValue(FXMLLoader.java:664)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:575)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2356)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2172)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2069)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2830)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2809)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2795)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2782)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2771)
at amnet23.AmNet23.start(AmNet23.java:23)
at com.sun.javafx.application.LauncherImpl$5.run(LauncherImpl.java:319)
at com.sun.javafx.application.PlatformImpl$5.run(PlatformImpl.java:219)
at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:182)
at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:179)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl$4.run(PlatformImpl.java:179)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:76)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:17)
at com.sun.glass.ui.win.WinApplication$3$1.run(WinApplication.java:67)
at java.lang.Thread.run(Thread.java:745)
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.javafx.main.Main.launchApp(Main.java:698)
at com.javafx.main.Main.main(Main.java:871)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:403)
at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:47)
at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:115)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: java.lang.IllegalAccessException: Class javafx.fxml.FXMLLoader$ValueElement can not access a member of class amnet23.FXMLDocumentController with modifiers ""
at javafx.fxml.FXMLLoader$ValueElement.processValue(FXMLLoader.java:664)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:575)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2356)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2172)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2069)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2830)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2809)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2795)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2782)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2771)
at amnet23.AmNet23.start(AmNet23.java:23)
at com.sun.javafx.application.LauncherImpl$5.run(LauncherImpl.java:319)
at com.sun.javafx.application.PlatformImpl$5.run(PlatformImpl.java:219)
at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:182)
at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:179)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl$4.run(PlatformImpl.java:179)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:76)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:17)
at com.sun.glass.ui.win.WinApplication$3$1.run(WinApplication.java:67)
... 1 more
Caused by: java.lang.IllegalAccessException: Class javafx.fxml.FXMLLoader$ValueElement can not access a member of class amnet23.FXMLDocumentController with modifiers ""
at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:109)
at java.lang.reflect.AccessibleObject.slowCheckMemberAccess(AccessibleObject.java:261)
at java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:253)
at java.lang.reflect.Field.set(Field.java:738)
at javafx.fxml.FXMLLoader$ValueElement.processValue(FXMLLoader.java:662)
... 21 more
Java Result: 1
Deleting directory C:\Users\Midoo\Documents\NetBeansProjects\AmNet23\dist\run1416917689
jfxsa-run:
BUILD SUCCESSFUL (total time: 6 seconds)
所以我不明白这个问题是由任何人帮助我所能引起的，并提前致谢：）
答案 0 :(得分：1)
你还没有展示FXML，所以这是一个猜测，但你的控制器中的大多数字段都没有@FXML - 注释，似乎没有在其他地方初始化。所以我怀疑FXMLLoader正在尝试注入一个（或多个）没有@FXML注释的字段。您需要注释从FXML文件注入的所有字段。