从Java组件访问MuleMessage和流变量 [英] Accessing MuleMessage and a flow variable from Java component

查看:513
本文介绍了从Java组件访问MuleMessage和流变量的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我有一个接收有效负载(JsonData)的Java组件,如下所示:

I have a Java component that receives a payload (JsonData), like this:

public String myMethod(JsonData payload) throws IOException {
  // do things with payload.
}

这个工作正常,但我还需要访问一个流变量方法。我明白,为此,我需要运行myMessage.getInvocationProperty(my-variable-name);
但是,由于我只传递了有效负载,因此我无法访问MuleMessage。如何更改方法以便我可以访问我的消息/属性?

This is working fine, but I also need to access a flow variable within the method. I understand that, to do so, I need to run myMessage.getInvocationProperty("my-variable-name"); However, since I'm only passing the payload, I don't have access to the MuleMessage. How can I change my method so I can get access to my message/property?

我试过:

org.mule.RequestContext.getEvent().getMessage()

但它已被弃用。

此外,我已经阅读了有关此问题的各种答案,但从未找到完整答案。

Also, I've read all sorts of answers on this issue but never found a complete answer.

谢谢,

推荐答案

将流量变量作为第二个参数传递给 myMethod 通过调用消息处理器。

Pass the flow variable as a second argument to myMethod via the invoke message processor.

因此,假设<$ c的新签名$ c> myMethod 是:

public String myMethod(JsonData payload, String myVariable) throws IOException {
  // do things with payload.
}

你会这样做:

<invoke object-ref="myComponent"
        method="myMethod"
        methodArguments="#[message.payload],#[flowVars['my-variable-name']]" />

这篇关于从Java组件访问MuleMessage和流变量的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

查看全文
登录 关闭
扫码关注1秒登录
发送“验证码”获取 | 15天全站免登陆