Mule-在Mule流中设置弹簧对象调用的属性

Question

I'm using Mule 3.3.CE

I have a Class called SpringObject which implements Callable interface

package com.threads.test;

import org.mule.api.MuleEventContext;
import org.mule.api.lifecycle.Callable;

public class SpringObject implements Callable {

    private String someData;
    public String getSomeData() {
        return someData;
    }

    public void setSomeData(String someData) {
        this.someData = someData;
    }

    @Override
    public Object onCall(MuleEventContext eventContext) throws Exception {
        System.out.println("CALL SPRING --->>"+someData);

        return eventContext.getMessage();
    }

}    

And my flow is

<http:connector name="httpConnectorEntryPoint" doc:name="HTTP\HTTPS"/>

<spring:beans xmlns="http://www.springframework.org/schema/beans">
<spring:bean id="component" name="component" class="com.threads.test.SpringObject" lazy-init="false">   
</spring:bean>
</spring:beans>
<flow name="TestThreadsFlow1" doc:name="TestThreadsFlow1">
    <http:inbound-endpoint exchange-pattern="request-response" host="localhost" port="8099" path="m" connector-ref="httpConnectorEntryPoint" doc:name="HTTP"/>
        <set-payload value="#[&quot;ExitA&quot;]" doc:name="Set Payload"/>
        <component doc:name="Java">
            <spring-object bean="component">
                <property key="someData" value="Information"/>
            </spring-object>
        </component>
    </flow>

The problem is that when I run my flow and use the http connector, the console shows

CALL SPRING --->>null

instead of

CALL SPRING --->>Information

What could be?

Answer 1

you can try to configure your spring bean outside the flow as follow:

<spring:bean id="component" name="component"
    class="com.threads.test.SpringObject" lazy-init="false">
    <spring:property name="someData" value="Information" />
</spring:bean>

and inside the flow do:

<component>
    <spring-object bean="component" />
</component>

Answer 2

From the property element description in the XSD:

Sets a Mule property. This is a name/value pair that can be set on components, services, etc., and which provide a generic way of configuring the system. Typically, you shouldn't need to use a generic property like this, since almost all functionality is exposed via dedicated elements. However, it can be useful in configuring obscure or overlooked options and in configuring transports from the generic endpoint elements.

This means it's not intended for what you are trying to use it. The appropriate way to set a property in your bean is as follows:

<spring:bean id="component" name="component" class="com.threads.test.SpringObject" lazy-init="false">
    <spring:property name="someData" value="Information"/>
</spring:bean>