Create Hello JAX-RS service in WAS 8.0

The WAS 8.0 is Java EE 6.0 compliant that means it allows you to deploy JAX-RS compliant service and you dont have to go through painful steps for setting up external JAXRS container such as Jersey in your web application

I wanted to figure out what it takes to create HelloREST application in WAS 8.0 so i followed this steps to create Hello JAX-RS service. You can download the source code for sample from here

• First i used RAD 8.0 to create Servlet Technology 3.0 compliant web application( Which means no need for web.xml or no need of declaring servlets)



• Next create a HelloRestService class that is basically a REST service and is available at /hellorest url
  
  

  
  package com.webspherenotes.rest;
  
  import javax.ws.rs.GET;
  import javax.ws.rs.Path;
  import javax.ws.rs.Produces;
  import javax.ws.rs.QueryParam;
  
  @Path("/hellorest")
  public class HelloRESTService {
  
    @GET
    @Produces("text/html")
    public String sayHello(@QueryParam("name") String name){
      return "Hello " + name;
    }
    
  }
  

  
  
  


• 
  Next create HelloApplication class which is basically a REST servlet class like this.
  

  
  package com.webspherenotes.rest;
  
  import java.util.HashSet;
  import java.util.Set;
  
  import javax.ws.rs.ApplicationPath;
  import javax.ws.rs.core.Application;
  
  @ApplicationPath("/rest/")
  public class HelloApplication extends Application{
  
    @Override
    public Set<Class<?>> getClasses() {
       Set<Class<?>> s = new HashSet<Class<?>>();
       s.add(HelloRESTService.class);
       return s;
    }
    
  }
  

  
  The HelloApplication class extends javax.ws.rs.core.Application which helps you to declare the JAX-RS application, in this class i am overriding the getClasses() method which returns set of JAX-RS classes that act as JAX-RS service. In my case i do have only one HelloRESTService class so i am only adding that
  


• Now deploy the application on your WAS 8.0 server, if you try accessing it by sending GET request to http://localhost:9080/HelloRESTService/rest/hellorest?name=Sunil URL and you should get Hello Sunil as response