在java中打开文件并给出异常

我通过filenamechooser获取一个文件名并将其发送到我想要的处理方法，但问题是它不接受文件名。我使用JPcap打开文件。当我硬编码时，它会给我完美的结果，但当我发送文件名时，它会给我异常。这是我的代码

     JpcapCaptor captor = JpcapCaptor.openFile("E:\\10.pcap");

我拿了这个文件的打印声明，它给了我这个

      System.out.println("E:\\10.pcap");

在控制台上我得到这个

E:\10.pcap

  SEVERE: null
 java.io.IOException: E:\10.pcap
: Invalid argument
at jpcap.JpcapCaptor.openFile(JpcapCaptor.java:93)
at dpi.Functions.PortBasedAnalysis(Functions.java:52)
at dpi.GraphicalInterface.jButton1MouseClicked(GraphicalInterface.java:104)
at dpi.GraphicalInterface.access$000(GraphicalInterface.java:25)
at dpi.GraphicalInterface$1.mouseClicked(GraphicalInterface.java:49)
at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:253)
at java.awt.Component.processMouseEvent(Component.java:6041)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3260)
at java.awt.Component.processEvent(Component.java:5803)
at java.awt.Container.processEvent(Container.java:2058)
at java.awt.Component.dispatchEventImpl(Component.java:4410)
at java.awt.Container.dispatchEventImpl(Container.java:2116)
at java.awt.Component.dispatchEvent(Component.java:4240)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4322)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3995)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3916)
at java.awt.Container.dispatchEventImpl(Container.java:2102)
at java.awt.Window.dispatchEventImpl(Window.java:2429)
at java.awt.Component.dispatchEvent(Component.java:4240)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at      java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)

但是，当我将这个文件名从我的GUI发送到这个openfile函数时，它会给我这个异常，尽管当我获取这个文件名的printing语句时，它也是相同的E:\10.pcap

  SEVERE: null
 java.io.IOException: E:\10.pcap
: Invalid argument
at jpcap.JpcapCaptor.openFile(JpcapCaptor.java:93)
at dpi.Functions.PortBasedAnalysis(Functions.java:52)
at dpi.GraphicalInterface.jButton1MouseClicked(GraphicalInterface.java:104)
at dpi.GraphicalInterface.access$000(GraphicalInterface.java:25)
at dpi.GraphicalInterface$1.mouseClicked(GraphicalInterface.java:49)
at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:253)
at java.awt.Component.processMouseEvent(Component.java:6041)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3260)
at java.awt.Component.processEvent(Component.java:5803)
at java.awt.Container.processEvent(Container.java:2058)
at java.awt.Component.dispatchEventImpl(Component.java:4410)
at java.awt.Container.dispatchEventImpl(Container.java:2116)
at java.awt.Component.dispatchEvent(Component.java:4240)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4322)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3995)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3916)
at java.awt.Container.dispatchEventImpl(Container.java:2102)
at java.awt.Window.dispatchEventImpl(Window.java:2429)
at java.awt.Component.dispatchEvent(Component.java:4240)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at      java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)

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在文件选择器返回的路径上尝试使用trim（）函数

是否转义从文件选择器获得的路径？是否在从文件选择器获得的路径上尝试trim（）函数？@Rocky我没有使用trim，那是什么？从文件选择器返回的路径可能有一些尾随空格，为了删除它们，可以使用trim（）函数，我想Mat也建议使用下面的方法。