连接数据库经常连接失败问题

2018-05-15 10:56:58
正常:10:56:58 pool-1-thread-1 INFO [root] columnIndex:4[-1]<--->columnValue:java.util.concurrent.ExecutionException: java.lang.Exception: 连接失败
        at java.util.concurrent.FutureTask.report(Unknown Source)
        at java.util.concurrent.FutureTask.get(Unknown Source)
        at javax.swing.SwingWorker.get(Unknown Source)
        at com.fr.design.gui.ilist.TableViewList$3.done(Unknown Source)
        at javax.swing.SwingWorker$5.run(Unknown Source)
        at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.run(Unknown Source)
        at sun.swing.AccumulativeRunnable.run(Unknown Source)
        at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.actionPerformed(Unknown Source)
        at javax.swing.Timer.fireActionPerformed(Unknown Source)
        at javax.swing.Timer$DoPostEvent.run(Unknown Source)
        at java.awt.event.InvocationEvent.dispatch(Unknown Source)
        at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
        at java.awt.EventQueue.access$500(Unknown Source)
        at java.awt.EventQueue$3.run(Unknown Source)
        at java.awt.EventQueue$3.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
        at java.awt.EventQueue.dispatchEvent(Unknown Source)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.Exception: 连接失败
        at com.fr.design.gui.ilist.TableViewList$3.doInBackground(Unknown Source)
        at com.fr.design.gui.ilist.TableViewList$3.doInBackground(Unknown Source)
        at javax.swing.SwingWorker$1.call(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at javax.swing.SwingWorker.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
[java.lang.String]

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