Shulou(Shulou.com)06/03 Report--

About ajax error and background abnormal problem solving is how, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain for you in detail, people with this need can come to learn, I hope you can gain something.

When using ajax to asynchronously request to the background in project development, a check exception is actively thrown, and it is found that the error method cannot catch this exception. Later, I consulted that the runtime exception must be thrown in order to catch an exception in the error method.

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