javax.swing中的应用程序捕获异常 [英] Catch exceptions in javax.swing application

问题描述

我与的javax.swing 努力使生成（使用JAXFront库）从XML架构形式和存储由它们的用户转换成XML填充数据的aplication文档。

I'm working with javax.swing to make an aplication which generates forms from XML Schema (using JAXFront library) and stores the data filled by the user them into XML documents.

我已经把的try-catch-finally块，当我需要它，但我有一个小问题，捕获异常时，主线程结束（AWT的线程仍在运行）。

I have put try-catch-finally blocks when I need it, but I have a little problem catching exceptions when the main thread ends (The AWT threads are still running).

我有两个类里面做的主要工作和其它类这是不是问题非常重要：

I have two classes which do the main work and other classes which aren't important for the question:

• 的 主要类的：它具有以下的结构。初始化应用程序并运行主框架

• Main class: It has the following structure. Initializes the application and runs the main frame

public class Main { 
    public static void main(String[] args) {
        readArgs(); // An INI file with the app config
        Model model = initializeElements(args); // My model class
        try {
            MyFrame mfr = new MyFrame(title,model);
            mfr.visualize(); // Assembling view and setting visible
        } catch( Excepion e ) {
            doCleanUp();
            System.exit(-1);
        }
    }
}

的 框架类的：生成的看法，并听取事件

Frame Class: Generates the view and listen events

public class MyFrame extends JFrame implements ActionListener,MenuListener { 
    // Some attributes
    // Other mthods without importance
    /**
     * Compose the elements, add listeners and set visible the frame
     */
    public void visualize() {
        generateFormPanel();
        setListeners();
        validate();
        setVisible(true);
    }

    public MyFrame(String title, Modele model) {
        super(title);
        createElementsUsing(model);
    }

    public void actionPerformed(ActionEvent e) {
        // Code to manage events
    }
}

那么，问题如下：
当形象化功能从主方法exectuted，生成并显示图。在那一刻，是当我失去了追赶的异常的控制。然后我的问题是，如果有一些办法赶上了这一点后，倒掉的可能RuntimeExceptions

我希望你明白我的英语水平能回答这个问题。

I hope you understand my English and can answer the question.

先谢谢了。

推荐答案

最简单的版本设置默认的未捕获异常处理程序：

Simplest version is to set the default uncaught exception handler:

Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
    public void uncaughtException(Thread t, Throwable e) {
        // do something
    }
});

不过，捕捉程序中的藏汉的其他部分抛出未捕获的异常。

But that catches uncaught exceptions thrown in other parts of the program aswell.

然而，你能赶上揭去使用代理Swing事件分派线程仅运行时异常（见的此页面了解更多信息，复制$ C $从那里C）：

You could however catch only runtime exceptions thrown off the swing event dispatching thread using a proxy (See this page for more information, copied code from there):

class EventQueueProxy extends EventQueue {

    protected void dispatchEvent(AWTEvent newEvent) {
        try {
            super.dispatchEvent(newEvent);
        } catch (Throwable t) {
            // do something more useful than: t.printStackTrace();
        }
    }
}

现在安装它是这样的：

Toolkit.getDefaultToolkit().getSystemEventQueue().push(new EventQueueProxy());

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