我正在使用Derby Embedded Driver创建可执行jar。从IDE启动时，应用程序按预期运行（我使用IntelliJ）。创建jar后会收到错误，因此我认为问题在于依赖项未编译到jar中。
但是，derby.jar文件显示在外部库下。我还尝试手动添加... \ java \ jdk1.8.0_131 \ db \ lib作为依赖项，但没有用。
编辑：该项目是一个JavaFX应用程序，由IntelliJ预设的JavaFX应用程序项目类型生成。添加db \ lib依赖项后，我设置了项目结构＆gt;项目设置＆gt;用于生成JAR的工件（我还使用了生成Java FX应用程序而没有结果差异。）我还添加了META-INF / MANIFEST.MF。
我的问题是，我做错了什么，或者错过了什么。
代码：
package sample;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
import org.apache.derby.jdbc.EmbeddedDriver;
import java.sql.Connection;
import java.sql.DriverManager;
public class Main extends Application {
private final String connectionURL = "jdbc:derby:rbdb;create=true";
private Connection connection;
@Override
public void start(Stage primaryStage) throws Exception{
Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
DriverManager.registerDriver(new EmbeddedDriver());
System.out.println("Driver loaded");
connection = DriverManager.getConnection(connectionURL);
if (connection != null) {
System.out.println("Connected to DB");
}
//Default JavaFX stuff auto-generated by IntelliJ
//Controller.java and sample.fxml are defaults as well
Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
primaryStage.setTitle("Hello World");
primaryStage.setScene(new Scene(root, 300, 275));
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
错误：
C:\Users\<Username>\IdeaProjects\HelloWorld\out\artifacts\HelloWorld_jar>java -jar HelloWorld.jar
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherIml.java:389)
at sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$155(LauncherImpl.java:182)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.apache.derby.jdbc.EmbeddedDriver
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at sample.Main.start(Main.java:20)
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
META-INF / MANIFEST.MF
Manifest-Version: 1.0
Main-Class: sample.Main
以下是其他类似问题的列表，但是，这些问题都没有帮助：