ESB MULE将参数传递给java方法 [英] ESB MULE passing the parameters to the java method

问题描述

我使用MULE版本3.3.0 CE，我想从入站头中获取一些值，然后将其传递给java方法，在java方法中对传递的值进行一些更改，最后再次将其从java方法传递给出站???

I use MULE version 3.3.0 CE, I want to get some value from header in inbound and then pass it to a java method, in java method making some changes on passed value, finally again I pass it from java method to the outbound????

推荐答案

您可以仅使用MEL来代替Java Bean与Mule API的绑定(使用Callable)，例如:

Instead of tying your Java beans to the Mule API (with Callable), you can do this using MEL only, for example with:

<invoke object-ref="yourBean"
        method="yourMethod"
        methodArguments="#[message.inboundProperties['inboundPropertyName']]" />

<set-property propertyName="outboundPropertyName"
              value="#[payload]" />

这有一个警告，消息有效负载受invoke元素影响.如果这是一个问题，那么您可以选择:

This has the caveat that the message payload is affected by the invoke element. If this is a problem then you can go with:

<expression-component>
    propVal = app.registry.yourBean.yourMethod(message.inboundProperties['inboundPropertyName']);
    message.outboundProperties['outboundPropertyName'] = propVal;
</expression-component>

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