Question

I am building a webservices application using jersey,jax-rs

I have single jax-rs resource file at path “/authenticate”

I have multiple methods with individual paths like “/user” “/test”

@Path ("/authenticate")
public class Authenticate{
private static final Log log = LogFactory.getLog(Authenticate.class);

@QueryParam("entityId")
String entity;

@GET
@Path ("/{param}")
public Response getMsg(@PathParam ("param") String msg) {
    String o = "Hello Welcome Back:"+msg;
    return Response.status(200).entity(o).build();
}

@GET
@Path ("/user")
@Produces({"application/json"})
public UserDTO getUser (@Context HttpServletRequest request,
        @QueryParam("userId") int userId) {
    System.out.println("In Get User, User:"+userId);    
    System.out.println("In Get User, Entity:"+entity);
}

@GET
@Path ("/test")
@Produces({"application/json"})
public TestPOJO getTestPOJO () {
    System.out.println("In Get TestPOJO");
    System.out.println("In Get Test, Entity:"+entity);
    return new TestPOJO();
}

}

As suggested for jersey client, I am using a single webresource from client and build subsequent webresources from the same webresource by using .path(“/xxx”).

Here is how I create the initial web resource

WebResource webResource = client.resource("http://localhost:8080/Service/jaxrs/authenticate");
webResource.queryParam("entityId", securityHelper.getEntityId().toString());

Here is how I use the webresource subsequently

MultivaluedMap<String, String> params = new MultivaluedMapImpl();           
ClientResponse userRes = webResource.path("/user").queryParams(params).accept("application/json").get(ClientResponse.class);

I want to assign a queryparam to the initial webresource, and I want that to be retained by all subsequent webresources created using the .path(). But that is not happening right now. For example in the above code “entityId” is not available when the call with path(“/user”) is made.

My idea is to assign common parameters once and all subsequent users of the webResource need not add those again and again. Is there a way to do it? Will this approach work?

Answer 1

The line below creates a new WebResource and not changing the state of the webResource object:

webResource.queryParam("entityId", securityHelper.getEntityId().toString())

Eventually you could change your code like this to create the “base” resource:

WebResource webResource = client.resource("http://localhost:8080/Service/jaxrs/authenticate").queryParam("entityId", securityHelper.getEntityId().toString());

And then use this resource to create another resources as you like. WebResource.queryParam and WebResource.queryParams always create a new WebResource object.