我得到了这个例外：
"C:\Program Files\Java\jdk1.8.0_121\bin\java" -Dfile.encoding=windows-1254 -jar C:\Users\Jeredriqs\IdeaProjects\Exporter\out\artifacts\Exporter\Exporter.jar
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$155(LauncherImpl.java:182)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at sample.Main.start(Main.java:213)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
... 1 more
Exception running application sample.Main
Process finished with exit code 1
但我查看了我的代码，无法理解为什么会发生这种情况。它适用于普通的java类，但由于某种原因无法运行jar文件。
异常中提及的行是：
文件fileQueries = new File（this.getClass（）。getClassLoader（）。getResource（“”）。getPath（）+“\ Config \ Queries.ini”）;
File fileProfiles = new File(this.getClass().getClassLoader().getResource("").getPath() + "\\Config\\Config.properties");
if (fileQueries != null && !fileQueries.toString().isEmpty() && fileQueries.exists() && !fileQueries.isDirectory()) {
QueryManager queryManager = new QueryManager();
queryManager.readQueries(fileQueries.toString(), ";");
comboQueries = queryManager.comboQueries;
if (queryManager.isSuccessSql) {
arrayNames = new String[comboQueries.size()];
arrayQueries = new String[comboQueries.size()];
int index = 0;
for (ComboQuery cmb : comboQueries) {
arrayNames[index] = cmb.getName();
arrayQueries[index] = cmb.getQuery();
index++;
}
cmbQuery.getItems().addAll(arrayNames);
}
} else {
fileQueries.getParentFile().mkdirs();
fileQueries.createNewFile();
FileOutputStream fileOutputStream = new FileOutputStream(fileQueries, false);
}
任何帮助都将不胜感激。