可运行jar中的SQL？

我知道这可能是简单的东西，但我不知道它...可运行jar中的SQL？

我试图将我的程序之一转换为一个可运行的jar，它使用JDBC做一些SQL。当我导出项目时，我选择“将所有必需的库提取到可运行jar”，我在我的构建路径上有JDBC。

这里是我得到挂在我的代码的一部分...

String serverURL = **** 
String user = **** 
String pass = **** 
try { 
    conn = DriverManager.getConnection(serverURL, user, pass); 
} catch (SQLException e) { 
    //print stacktrack to a dialogbox 
} 
ResultSet rs = null; 
try { 
    rs = conn.createStatement().executeQuery("SELECT * FROM myDB"); 
} catch (SQLException e) { 
    //print stacktrack to a dialogbox 
}

所以该程序运行正常在Eclipse中，但是当我运行它运行的JAR执行似乎在停止executeQuery行。我已经做了一些JDialogs来查看问题可能出现在哪里，看起来conn是如何设置的（或者至少它不是null）。由于conn不为空，我假设这意味着JDBC工作正常。奇怪的事情我没有异常，据我所知，程序只停在executeQuery行。任何想法，为什么这可能是？

编辑：问题之前堆栈跟踪发生

java.lang.Object.wait(Native Method) 
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143) 
com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:64) 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
java.lang.Thread.run(Thread.java:745) 
sun.awt.windows.WToolkit.eventLoop(Native Method) 
sun.awt.windows.WToolkit.run(WToolkit.java:306) 
java.lang.Thread.run(Thread.java:745) 
java.lang.Object.wait(Native Method) 
java.lang.Object.wait(Object.java:502) 
java.lang.ref.Reference.tryHandlePending(Reference.java:191) 
java.lang.ref.Reference$ReferenceHandler.run(Reference.java:153) 
java.lang.Object.wait(Native Method) 
java.lang.Object.wait(Object.java:502) 
sun.awt.AWTAutoShutdown.run(AWTAutoShutdown.java:295) 
java.lang.Thread.run(Thread.java:745) 
java.lang.Thread.dumpThreads(Native Method) 
java.lang.Thread.getAllStackTraces(Thread.java:1607) 
HandMapper.loadRecorded(HandMapper.java:161) 
HandMapper.load(HandMapper.java:88) 
HandMapper.main(HandMapper.java:255) 
sun.awt.windows.WComponentPeer._dispose(Native Method) 
sun.awt.windows.WComponentPeer.disposeImpl(WComponentPeer.java:638) 
sun.awt.windows.WWindowPeer.disposeImpl(WWindowPeer.java:117) 
sun.awt.windows.WObjectPeer.dispose(WObjectPeer.java:88) 
java.awt.Component.removeNotify(Component.java:7042) 
java.awt.Container.removeNotify(Container.java:2820) 
java.awt.Window.removeNotify(Window.java:782) 
java.awt.Frame.removeNotify(Frame.java:1041) 
java.awt.Window$1DisposeAction.run(Window.java:1190) 
java.awt.Window.doDispose(Window.java:1206) 
java.awt.Window.dispose(Window.java:1147) 
javax.swing.SwingUtilities$SharedOwnerFrame.dispose(SwingUtilities.java:1814) 
javax.swing.SwingUtilities$SharedOwnerFrame.windowClosed(SwingUtilities.java:1792) 
java.awt.AWTEventMulticaster.windowClosed(AWTEventMulticaster.java:359) 
java.awt.Window.processWindowEvent(Window.java:2057) 
javax.swing.JDialog.processWindowEvent(JDialog.java:683) 
java.awt.Window.processEvent(Window.java:2013) 
java.awt.Component.dispatchEventImpl(Component.java:4889) 
java.awt.Container.dispatchEventImpl(Container.java:2294) 
java.awt.Window.dispatchEventImpl(Window.java:2746) 
java.awt.Component.dispatchEvent(Component.java:4711) 
java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758) 
java.awt.EventQueue.access$500(EventQueue.java:97) 
java.awt.EventQueue$3.run(EventQueue.java:709) 
java.awt.EventQueue$3.run(EventQueue.java:703) 
java.security.AccessController.doPrivileged(Native Method) 
java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80) 
java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90) 
java.awt.EventQueue$4.run(EventQueue.java:731) 
java.awt.EventQueue$4.run(EventQueue.java:729) 
java.security.AccessController.doPrivileged(Native Method) 
java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80) 
java.awt.EventQueue.dispatchEvent(EventQueue.java:728) 
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201) 
java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) 
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) 
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) 
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) 
java.awt.EventDispatchThread.run(EventDispatchThread.java:82) 
java.lang.Object.wait(Native Method) 
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143) 
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164) 
java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209) 
java.lang.Object.wait(Native Method) 
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143) 
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164) 
sun.java2d.Disposer.run(Disposer.java:148) 
java.lang.Thread.run(Thread.java:745)

来源

2017-06-01 Ben Arnao

打印出所有堆栈痕迹。总是。有重要的信息。 –

你可以添加程序的堆栈跟踪吗？ – yorodm

@yorodm我在问题发生之前就添加了完整的堆栈跟踪。不知道这是你想要的吗？ –

我建议Maven来打包你的依赖和你的应用程序

一个很好的网站访问https://www.mkyong.com/maven/create-a-fat-jar-file-maven-assembly-plugin/

一个例子：

<project> 
[...] 
<build> 
    <plugins> 
     <plugin> 
      <artifactId>maven-assembly-plugin</artifactId> 
      <configuration> 
       <archive> 
        <manifest> 
         <addClasspath>true</addClasspath> 
         <mainClass>fully.qualified.MainClass</mainClass> 
        </manifest> 
       </archive> 
       <descriptorRefs> 
        <descriptorRef>jar-with-dependencies</descriptorRef> 
       </descriptorRefs> 
      </configuration> 
      <executions> 
       <execution> 
        <id>make-my-jar-with-dependencies</id> 
        <phase>package</phase> 
        <goals> 
         <goal>single</goal> 
        </goals> 
       </execution> 
      </executions> 
     </plugin> 
    [...] 
    </plugins> 
    [...] 
</build> 
</project>

来源

2017-06-01 20:51:38

可运行jar中的SQL？

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