CODEWITHSUNDEEP
tomcatservletsjerseyjax-rs
Ryan
Ryan

Reputation: 288

JAX-RS/Jersey + Tomcat ServletContext is null

I'm trying to get the servlet context of a Jersey resource deployed in Tomcat, but whenever I attempt this I get a null pointer exception. My code is as follows:

@Path("/resource")
public class MyResource {

@Context ServletContext context;

public MyResource(){

    System.out.println("Context: "+context.getRealPath("/"));

}

}

My web.xml is configured like this:

<servlet>
  <servlet-name>MyResource</servlet-name>
<servlet-class>
  com.sun.jersey.spi.container.servlet.ServletContainer
</servlet-class>
  <init-param>
    <param-name>com.sun.jersey.config.property.packages</param-name>
    <param-value>com.mypackage</param-value>
  </init-param>
  <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>MyResource</servlet-name>
  <url-pattern>/*</url-pattern>
</servlet-mapping>

Any clue what my issue could be? Using Tomcat 6.0.33 and Jersey 1.12.

Upvotes: 3

Views: 4224

Answers (1)

toniedzwiedz
toniedzwiedz

Reputation: 18543

The injection doesn't happen until you use a service method to access a resource.

@Path("/resource")
public class MyResource {

   @Context ServletContext context;

   public MyResource() {
       System.out.println(context); //null
   }

   @GET
   @Path("subresource")
   public Response getASubResource() {
       System.out.println(context); // not null
       return Response.ok("OK").build();
   }



}

Upvotes: 11

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