HttpServletResponse 到 javax.ws.rs.core.Response

Question

I have a Rest Get api:

@GET
@Path("myEndpoint")
public Response getSomething(@Context HttpServletResponse response) {
  // do something with httpServletResponse

}

How do I return the updated HttpServletResponse as javax.ws.rs.core.Response ?

Answer 1

You don't, you have build a Response and return that one:

return Response.ok(entityYouWantToReturn).build();

Example:

@GET
@Path("myEndpoint")
public Response getSomething(@Context HttpServletResponse response) {
    return Response.ok("it worked!").build();
}

This will result in a 200 OK response with body it worked! . You can use @Produces and @Consumes to make your API accept and/or return different datatypes (application/json etc).

Answer 2

You can update HttpServletRequest by adding it with @Context in class

@Context
private HttpServletRequest request;

And check it in method

 // do something with httpServletResponse
 checkRequest(request);

Answer 3

Expanding a bit on @BlackSlash answer, a better syntax would be:

Response.status(Response.Status.OK).entity(any object here).build();
Or another example:
Response.status(Response.Status.BAD_REQUEST).entity("Error message...").build();

Just remember to set the media type correctly for example:

@Produces(MediaType.APPLICATION_JSON)