嵌入式Java Gate

Question

我正在尝试使用Gate embedded来提取一些实体。我包含了bin和lib文件夹中的jar文件，代码如下：

    Out.prln("Initialising GATE...");
    Properties props = System.getProperties();
    props.setProperty("gate.home", "/Applications/GATE_Developer_8.2");
    SwingUtilities.invokeAndWait(new Runnable() { 
        public void run() {
            MainFrame.getInstance().setVisible(true);
            try {
                Factory.newDocument("This is a document");
            } catch (ResourceInstantiationException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();

但我总是得到以下异常。有人知道我做错了什么吗？谢谢

Exception in thread "main" java.lang.reflect.InvocationTargetException
    at java.awt.EventQueue.invokeAndWait(EventQueue.java:1312)
    at java.awt.EventQueue.invokeAndWait(EventQueue.java:1287)
    at javax.swing.SwingUtilities.invokeAndWait(SwingUtilities.java:1348)
    at gate.Gate.main(Gate.java:25)
Caused by: java.lang.NoSuchMethodError: gate.Gate.getUserConfig()Lgate/util/OptionsMap;
    at gate.swing.XJFileChooser.getLocations(XJFileChooser.java:140)
    at gate.swing.XJFileChooser.<init>(XJFileChooser.java:70)
    at gate.gui.MainFrame.<init>(MainFrame.java:493)
    at gate.gui.MainFrame.getInstance(MainFrame.java:352)
    at gate.gui.MainFrame.getInstance(MainFrame.java:348)
    at gate.Gate$1.run(Gate.java:27)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:301)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:749)
    at java.awt.EventQueue.access$500(EventQueue.java:97)
    at java.awt.EventQueue$3.run(EventQueue.java:702)
    at java.awt.EventQueue$3.run(EventQueue.java:696)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:719)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

Answer 1

出现此错误是因为类在类路径中，但它的版本与您的需要不匹配。找到了这个类，但是调用了一个在这个类的版本中不存在的方法。

我认为您应该使用更新版本的GATE库。

例如，此版本的https://gate.ac.uk/releases/gate-3.1-build2270-ALL/doc/javadoc/包含提供公共方法OptionsMap getUserConfig()的the gate.Gate类。

Answer 2

在查看堆栈跟踪时，我认为您的主类被命名为gate.Gate -与GATE库的中心类同名。这种名称的冲突导致了这个问题。

只需重命名您的类或更改它的包，错误应该就会消失。