Question

i am using jersey to build a REST webservice.
I created a class, implementing the ContainerRequestFilter interface to determine whether a user is logged in or not. Now I ‘d like to discard each request that is submitted if user == null. How can this be achieved? I don’t want to put a

if (user != null ) {
 ...
} else {
 return //401
}

in each action.

Answer 1

throw WebApplicationException:

public ContainerRequest filter(ContainerRequest request) {
    if (user != null ) {
           //...
        } else {
            throw new WebApplicationException(401);
        }
    return request;
}