Changing the Echo Example to add in my own JavaBean - Mule FAQ - Open Source ESB and Integration Platform

How do I then take the Echo example from Mule, and add in my own code to be executed, rather than the built in EchoComponent - org.mule.components.simple.EchoComponent

To do this, I assume that you have already read - How do I get Started developing applications with Mule?

The next step is to create a JavaBean. In this example I have craeted the following bean -

package net.customware.enterprise;

public class Project {

	public Project(){
		
	}
	
	public String getProjectName(String name){
		return name + "_"+ System.currentTimeMillis();
	}
}

I have then modified the echo-config.xml to use this implementation, rather than the built in echo component:

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE mule-configuration PUBLIC "-//MuleSource //DTD mule-configuration XML V1.0//EN"
                                "http://mule.mulesource.org/dtds/mule-configuration.dtd">

<mule-configuration id="Mule_Echo_Sample" version="1.0">

    <description>
    This is a simple component example that demostrates how to expose a component over multiple transports.

    To invoke the EchoUMO component as a webservice hit the following URL -
    http://localhost:8081/services/EchoUMO?method=echo&amp;param=Is there an echo?
    (remember to replace the '&amp;' with an ampersand)

    To view the WSDL for the EchoUMO service go to -
    http://localhost:8081/services/EchoUMO?wsdl
    </description>

    <!--
        The system stream connector is used to send and receive information via the
        System.in and System.out. Note this connector is only really useful for testing
        purposes.
        promptMessage - is what is written to the console
        messageDelayTime - is the time in milliseconds before the user is prompted again.
        These properties are set as bean properties on the connector.
    -->
    <connector name="SystemStreamConnector" className="org.mule.providers.stream.SystemStreamConnector">
        <properties>
            <property name="promptMessage" value="Please enter something: "/>
            <property name="messageDelayTime" value="1000"/>
        </properties>
    </connector>

     <transformers>
        <transformer name="HttpRequestToSoapRequest" className="org.mule.providers.soap.transformers.HttpRequestToSoapRequest"/>
    </transformers>

    <!--
        The Mule model initialises and manages your UMO components
    -->
    <model name="echoSample">
        <!--
            A Mule descriptor defines all the necessary information about how your components will
            interact with the framework, other components in the system and external sources.
            Please refer to the Configuration Guide for a full description of all the parameters.
        -->
        <mule-descriptor name="EchoUMO" implementation="net.customware.enterprise.Project">
            <!-- any number of endpoints can be added to an inbound router -->
            <inbound-router>
                <endpoint address="stream://System.in"/>
                <endpoint address="xfire:http://localhost:8081/services" transformers="HttpRequestToSoapRequest" />                
            </inbound-router>
            <!-- An outbound router can have one or more router configurations
            that can be invoked depending on business rules, message contents, headers
            or ant other criteria.
            The OutboundPassthroughRouter is a router that automically sends every
            message it receives -->
            <outbound-router>
                <router className="org.mule.routing.outbound.OutboundPassThroughRouter">
                    <endpoint address="stream://System.out"/>
                </router>
            </outbound-router>
        </mule-descriptor>
    </model>
</mule-configuration>

After this I can run the example with the following URL:

http://localhost:8081/services/EchoUMO?method=getProjectName&param=chickenrice

Following is the result!

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
	<soap:Body>
		<getProjectNameResponse xmlns="http://www.muleumo.org">
		  	<out>chickenrice_1172206588437</out> 
		</getProjectNameResponse>
	</soap:Body>
</soap:Envelope>