Spring – Exposing a bean as both REST (xml, json, …) and SOAP WebServices

http://raulraja.com/2009/06/25/spring-exposing-a-bean-as-rest-xml-json-and-soap-webservice/
Often times you have Spring services that you want to expose as web-services. In this small tutorial I’ll just show a few configuration files and code that demonstrate how a service and its implementation can accommodate both REST and SOAP access to the same backbone.

Thanks Justin for the REST part.

This tutorial is available for download with svn:
svn checkout http://raulrajatutorials.googlecode.com/svn/trunk/ raulrajatutorials-read-only
Comments in the code itself should be self-explanatory if you already have some java + spring experience.
I have not included the dependencies on CXF for simplicity but you can take a look at them and some for the other tutorials here.

And now to the point.
applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:cxf="http://cxf.apache.org/core"
       xmlns:jaxws="http://cxf.apache.org/jaxws"
       xmlns:jaxrs="http://cxf.apache.org/jaxrs"
       xsi:schemaLocation="
       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
       http://cxf.apache.org/core
       http://cxf.apache.org/schemas/core.xsd
       http://cxf.apache.org/jaxws
       http://cxf.apache.org/schemas/jaxws.xsd
       http://cxf.apache.org/jaxrs
       http://cxf.apache.org/schemas/jaxrs.xsd"
       default-autowire="byName">
 
    <!-- Load CXF modules from cxf.jar -->
    <import resource="classpath:META-INF/cxf/cxf.xml"/>
    <import resource="classpath:META-INF/cxf/cxf-extension-soap.xml"/>
    <import resource="classpath:META-INF/cxf/cxf-servlet.xml"/>
    <import resource="classpath:META-INF/cxf/cxf-extension-jaxrs-binding.xml"/>
 
    <cxf:bus>
        <cxf:features>
            <cxf:logging/>
        </cxf:features>
    </cxf:bus>
 
    <!-- The hello world service -->
    <bean id="helloWorldService" class="com.raulraja.ws.impl.HelloWorldServiceImpl" autowire="autodetect"/>
 
    <!-- Exposing the Helloworld service as a rest service -->
    <jaxrs:server id="restServer" address="/rest/">
        <jaxrs:serviceBeans>
            <ref bean="helloWorldService"/>
        </jaxrs:serviceBeans>
        <jaxrs:extensionMappings>
            <entry key="feed" value="application/atom+xml"/>
            <entry key="json" value="application/json"/>
            <entry key="xml" value="application/xml"/>
            <entry key="html" value="text/html"/>
        </jaxrs:extensionMappings>
    </jaxrs:server>
 
 
    <!-- Exposing the HelloWorld service as a SOAP service -->
    <bean id="jaxbBean"
          class="org.apache.cxf.jaxb.JAXBDataBinding"
          scope="prototype"/>
 
    <bean id="jaxws-and-aegis-service-factory"
          class="org.apache.cxf.jaxws.support.JaxWsServiceFactoryBean"
          scope="prototype">
        <property name="dataBinding" ref="jaxbBean"/>
        <property name="serviceConfigurations">
            <list>
                <bean class="org.apache.cxf.jaxws.support.JaxWsServiceConfiguration"/>
                <bean class="org.apache.cxf.aegis.databinding.AegisServiceConfiguration"/>
                <bean class="org.apache.cxf.service.factory.DefaultServiceConfiguration"/>
            </list>
        </property>
    </bean>
 
 
    <jaxws:endpoint id="helloWorldServiceEndpoint"
                    serviceName="HelloWorld"
                    implementorClass="com.raulraja.ws.HelloWorldService"
                    implementor="#helloWorldService"
                    address="/helloWorldService">
        <jaxws:serviceFactory>
            <ref bean="jaxws-and-aegis-service-factory"/>
        </jaxws:serviceFactory>
    </jaxws:endpoint>
 
</beans>

HelloWorldService.java

package com.raulraja.ws;
 
import javax.ws.rs.Path;
import javax.ws.rs.GET;
import javax.jws.WebService;
import javax.jws.WebMethod;
 
/**
 * The hello world service interface exposed as soap and rest
 *
 * @ WebService is for soap
 * @ Path is for the rest top path
 */
@Path("/helloWorldService/")
@WebService(serviceName = "HelloWorld", name = "HelloWorldService", targetNamespace = "http://ws.raulraja.com")
public interface HelloWorldService {
 
	/**
	 * Simple methods that says hello
	 *
	 * @return hello world rest and soap!!!
	 * @ WebMethod is for soap
	 * @ GET is for REST
	 * @ Path is for the REST service path
	 */
	@WebMethod
	@GET
	@Path("/")
	HelloWorld sayHello();
 
}

HelloWorldServiceImpl.java

package com.raulraja.ws.impl;
 
import com.raulraja.ws.HelloWorld;
import com.raulraja.ws.HelloWorldService;
 
/**
 * Implementation of the hello world web service.
 */
public class HelloWorldServiceImpl implements HelloWorldService {
 
	/**
	 * Simple methods that says hello
	 *
	 * @return hello world rest and soap!!!
	 */
	public HelloWorld sayHello() {
		HelloWorld helloWorld = new HelloWorld();
		helloWorld.setMessage("Hello world rest and soap!!!");
		return helloWorld;
	}
}

HelloWorld.java

package com.raulraja.ws;
 
import javax.xml.bind.annotation.XmlRootElement;
 
/**
 * Hello world object that demonstrates the service
 */
@XmlRootElement
public class HelloWorld {
 
	/**
	 * the message
	 */
	private String message;
 
	/**
	 * @return the message
	 */
	public String getMessage() {
		return message;
	}
 
	/**
	 * @param message sets the message
	 */
	public void setMessage(String message) {
		this.message = message;
	}
}

And here is some screen captures for the results…

Soap Services list