Question

Camel 2.11.0在这里。我有以下Camel路线：

<route id="main-route"> 
    <from uri="timer://runOnce?repeatCount=1&amp;delay=10" /> 

    <to uri="bean:loggingBean?method=main" />

    <to uri="bean:processorBean?method=doSomething" />

    <to uri="bean:loggingBean?method=afterProcessing" />

    <multicast> 
        <to uri="direct:validator" />
        <to uri="direct:rejector" /> 
    </multicast> 
</route>

<route id="validator-route"> 
    <from uri="direct:validator" />
    <to uri="bean:loggingBean?method=validator" />
</route>

<route id="rejector-route"> 
    <from uri="direct:rejector" /> 
    <to uri="bean:loggingBean?method=rejector" />
</route>

... loggingBean的样子：

public class LoggingBean {
    public void main(Exchange e) {
        System.out.println("Starting main route...");
    }

    public void afterProcessing(Exchange e) {
        System.out.println("Processing input...");
    }

    public void validator(Exchange e) {
        System.out.println("In validator route...");
    }

    public void rejector(Exchange e) {
        System.out.println("In rejector route...");
    }
}

当我运行此代码时，我得到以下控制台输出：

Starting main route...
Processing input...
In validator route...

因为我们在这里多广播，所以我希望它也包含拒绝者的输出，如下所示：

Starting main route...
Processing input...
In validator route...
In rejector route...

所以似乎Multicaster只发送到嵌套在其中的第一个元素（在Spring XML中），而不是第二个。嗯，有趣。然后我将<multicast>元素更改为如下所示：

<multicast> 
    <to uri="direct:rejector" /> 
    <to uri="direct:validator" />
</multicast>

这次，控制台输出如下：

Starting main route...
Processing input...
In rejector route...

所以这一点得到了证实：<multicast>只是将交换广播到它下面列出的第一个子元素。 为什么，以及如何解决此问题？

Answer 1

multicast肯定发送到所有端点......我不确定为什么它不是基于你的例子

看到这些基本相同的单元测试：

https://svn.apache.org/repos/asf/camel/trunk/components/camel-spring/src/test/java/org/apache/camel/spring/processor/SpringMulticastTest.java

使用此路线：

https://svn.apache.org/repos/asf/camel/trunk/components/camel-spring/src/test/resources/org/apache/camel/spring/processor/multicast.xml

Answer 2

我测试了你的路线，一切都按预期工作：

<multicast>
    <to uri="direct:rejector" />
    <to uri="direct:validator" />
</multicast>

记录

Starting main route...
Processing input...
In rejector route...
In validator route...

并且

<multicast>
    <to uri="direct:validator" />
    <to uri="direct:rejector" />
</multicast>

记录

Starting main route...
Processing input...
In validator route...
In rejector route...

也许，你读错了Camel配置？

骆驼组播无法正常工作

2 个答案: