Restful WADL WebService that serves the XML

In this tutorial, I am showing you how to develop a simple  RESTFUL web application that serves the XML request and response

Jar files required :

1. cxf-bundle-2.7.3.jar
2. httpasyncclient-4.0-beta3.jar
3. httpclient-4.2.1.jar
4. httpcore-4.2.2.jar
5. httpcore-nio-4.2.2.jar
6. javax.ws.rs-api-2.0-m10.jar
7. jaxb-impl-1.0.6.jar
8. jettison-1.3.3.jar
9. neethi-3.0.2.jar
10. org-apache-commons-logging.jar
11. xmlschema-core-2.0.jar

1. Creating a simple Bean class

package com.student;

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement(name = "Student")

public class Student {

  private String name;

  public String getName() {

    return name;

  }

  public void setName(String name) {

    this.name = name;

  }

}

2. Create a Web Service Endpoint Interface

package com.student;

public interface ChangeStudentDetails {

  Student changeName(Student student);

  Student getName();

}

3.  Create a Web Service Endpoint Implementation

package com.student;

import javax.ws.rs.Consumes;

import javax.ws.rs.GET;

import javax.ws.rs.POST;

import javax.ws.rs.Path;

import javax.ws.rs.Produces;

@Consumes("application/xml")

@Produces("application/xml")

public class ChangeStudentDetailsImpl implements ChangeStudentDetails {

  @POST

  @Path("/changeName")

  public Student changeName(Student student) {

    student.setName("HELLO " + student.getName());

    return student;

  }

  @GET

  @Path("/getName")

  public Student getName() {

    Student student = new Student();

    student.setName("Rockey");

    return student;

  }

}

4. The Web Application Deployment Descriptor

<web-app id="WebApp_ID" version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"

xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"

        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemalocation="http://java.sun.com/xml/ns/javaee 

        http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

<servlet>

        <display-name>test</display-name>

        <servlet-name>test</servlet-name>

        <servlet-class>org.apache.cxf.jaxrs.servlet.CXFNonSpringJaxrsServlet</servlet-class>

        <init-param>

              <param-name>jaxrs.serviceClasses</param-name>

              <param-value>com.student.ChangeStudentDetailsImpl </param-value>

        </init-param>

       <init-param>

             <param-name>jaxrs.address</param-name>

             <param-value>/rest</param-value>

        </init-param>

</servlet>

<servlet-mapping>

       <servlet-name>test</servlet-name>

       <url-pattern>/test/*</url-pattern>

</servlet-mapping>

</web-app>

5. Run it

 You can access this example in the following URL.

  http://localhost:8080/application/test?_wadl