直到成功的失败表达式都将检查多种类型的异常 [英] Until successful failure expression that checks for multiple types of exceptions

问题描述

在Mule中，我正在HTTP端点周围使用直到成功，以捕获连接异常/超时.我捕获了3种不同的Java异常:

In Mule, I'm using an until successful around an HTTP endpoint, to catch connection exceptions/timeouts. I'm catching 3 different Java exceptions:

• java.net.ConnectException
• java.net.SocketTimeoutException
• java.net.SocketException

我想将这3个捕获到我的until-successful块中的failureExpression中，但是当我尝试做类似

I want to put the catching of these 3 into a failureExpression in my until-successful block, however when I try to do something like

• #[exception-type:XYZ || exception-type:ZYX]
• #[exception-type:XYZ] || #[exception-type:ZYX]

• #[exception-type:XYZ || exception-type:ZYX]
• #[exception-type:XYZ] || #[exception-type:ZYX]

我收到一个错误，它无法解析这些错误.有什么方法可以指定failureExpression来检查多种异常类型吗?

I get an error that it cannot parse these. Is there any way I can specify for the failureExpression to check for multiple exception types?

推荐答案

使用此功能，我可以实现自己想要的功能:

I was able to achieve what I wanted using this:

failureExpression="#[exception != null && (exception.causedBy(java.net.ConnectException) || exception.causedBy(java.net.SocketTimeoutException) || exception.causedBy(java.net.SocketException))]"

我的问题是失败表达式中的exception可能是null，因此我必须执行空检查.

My problem was the exception in the failure expression could be null, so I had to perform a null check.

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