附录中列举了一个简单的异常处理器的例子。

An example of a simple exception handler is presented in in the Appendix.

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为了解决这个问题，我们将实现一个全局异常处理器。

To solve this problem we will implement a global exception handler.

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异常处理器也是一种action处理器，当节点执行时出现异常，它将会被调用。

An exception handler is a kind of action handler, which is invoked when exception occurs during the node execution.

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