java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:297) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286) at java.lang.ClassLoader.loadClass(ClassLoader.java:253) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:120) at student.Frame1.qu_jButton2_actionPerformed(Frame1.java:105) at student.Frame1$1.actionPerformed(Frame1.java:65) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1450) at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1504) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:378) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:250) at javax.swing.plaf.basic.BasicRootPaneUI$DefaultAction.actionPerformed(BasicRootPaneUI.java:156) at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1384) at javax.swing.JComponent.processKeyBinding(JComponent.java:2078) at javax.swing.KeyboardManager.fireBinding(KeyboardManager.java:252) at javax.swing.KeyboardManager.fireKeyboardAction(KeyboardManager.java:205) at javax.swing.JComponent.processKeyBindingsForAllComponents(JComponent.java:2145) at javax.swing.JComponent.processKeyBindings(JComponent.java:2138) at javax.swing.JComponent.processKeyEvent(JComponent.java:2045) at java.awt.Component.processEvent(Component.java:3553) at java.awt.Container.processEvent(Container.java:1164) at java.awt.Component.dispatchEventImpl(Component.java:2593) at java.awt.Container.dispatchEventImpl(Container.java:1213) at java.awt.Component.dispatchEvent(Component.java:2497) at java.awt.LightweightDispatcher.processKeyEvent(Container.java:2155) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2135) at java.awt.Container.dispatchEventImpl(Container.java:1200) at java.awt.Window.dispatchEventImpl(Window.java:914) at java.awt.Component.dispatchEvent(Component.java:2497) at java.awt.EventQueue.dispatchEvent(EventQueue.java:339) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:131) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:98)
没有驱动呀!
你是不是没有把驱动加入Classpath。
呵呵,或者你根本就没有驱动。
C:\mm.mysql\mm.mysql-2.0.13\mm.mysql-2.0.13-bin
[email protected]
可以连接起来,得到正确的结果。
但是在jb里面怎么设置啊!