The document provides instructions for creating a "Hello World" SOAP service in Mule ESB in 5 minutes. It involves creating a service interface and implementation class, configuring an HTTP listener, CXF component to handle SOAP, and Java component for the service logic. The service returns the input string passed to its "sayHi" method. Testing is done by importing the exposed WSDL into a tool like soap-ui.

1. Mule ESB
How to build a Hello World Soap Service in 5 minutes
Gennaro Spagnoli - 2016

2. Contents
 Overview
 Creating the service interface
 Creating the service implementation
 Configuring the HTTP component
 Configuring the CXF component
 Configuring the Java component
 Deployment and testing
Gennaro Spagnoli - 2016

3. Overview
The goal of the tutorial is to create a simple HelloWorld Web Service using Anypoint Studio and
Mule Esb.
The Soap Service implementation on Mule ESB is based on CXF Framework:
https://cxf.apache.org/
To understand this tutorial you will just need to have a basic knowledge on the JAX-WS api, which
CXF is based on, and some familiarity on flows creation and configuration on Anypoint Studio:
https://jax-ws.java.net/
Gennaro Spagnoli - 2016

4. Creating the service interface
The first step is the creation of the java service interface HelloWorldService.java as follows:
package soapservicetest;
import javax.jws.WebParam;
import javax.jws.WebService;
@WebService(name="HelloWorldService")
public interface HelloWorldService {
String sayHi(@WebParam(name="input") String text);
}
As you can see, the service just exposes a simple sayHi method, which will send back the input
provided to the service
Gennaro Spagnoli - 2016

5. Creating the service implementation
It’s now time to implement the business logic of the service, in a new class called
HelloWorldServiceImpl.java as follows:
package soapservicetest;
public class HelloWorldServiceImpl implements HelloWorldService {
public String sayHi(String input){
return "Hello World, "+input;
}
}
As you can see, the service just implements the sayHi method, which as expected, returns back
the input message.
Gennaro Spagnoli - 2016

6. Configuring the HTTP component
Create a new flow and insert an HTTP listener listening on default port , configured in this way:
Gennaro Spagnoli - 2016

7. Configuring the CXF component
Now you need the add the CXF component which will manage the generation of the wsdl, and
will respond to the incoming SOAP messages:
e
Gennaro Spagnoli - 2016
Choose JAX-WS service in the Operation field, to tell
CXF that the component is actually a service
implementation and fill the Service Class form with
the name of your interface service

8. Configuring the JAVA component
The last step will be to add a Java component addressing the implementation of the service:
Gennaro Spagnoli - 2016

9. Deployment and testing
It’s now time to test the newly created service.
You can test it with one of the several tools for the ws consuming, like soap-ui.
Just import the wsdl exposed on the url:
http://localhost:8081/helloworld?wsdl
You should now obtain something like this:
Gennaro Spagnoli - 2016