ESB MULE passing the parameters to the java method

2019-04-12 17:06发布

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????

2条回答
2楼-- · 2019-04-12 18:03

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]" />

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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我想做一个坏孩纸
3楼-- · 2019-04-12 18:07
  1. Make your Java component implement org.mule.api.lifecycle.Callable
  2. In its onCall you can get the message as follows:

    MuleMessage message = eventContext.getMessage();

  3. Now you can obtain the inbound properties:

    Object someProp = message.getInboundProperty("some_prop_name");

  4. After operating over it, you place it back as an outbound property:

    message.setOutboundProperty("some_prop_name", someProp);

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