JAX-RS, path params don't work

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I try to pass a parameter via GET to a REST method.

@GET
@Path("{id}")
public Response getUser(@PathParam("id") String id) {
    Query qry = em.createQuery("from User c WHERE id = :user_id");
    qry.setParameter("user_id", id);
    List<User> results = qry.getResultList();

    if(results.size() > 0) {
        return Response.ok(results.get(0),MediaType.APPLICATION_JSON_TYPE).build();
    } else {
        return Response.serverError().status(Response.Status.NOT_FOUND).build();
    }
}

If I call it via the Rest Client with:

client = ClientBuilder.newClient();    
Response response = client.target(TestPortProvider.generateURL("/user")+"/abc").request().get(Response.class);

then the method gets called but the parameter is empty. If I remove the "abc" from the GET url the method gets not called. Also if I remove the @Path("{id}") it doesn't work too. It seems as there is a parameter but it's empty for no reason. Maybe some one can help me to fix the problem.

kind regards

sadly the reason was a wrong import for PathParam. so a big note to my desk ... if unchecked things doesn't work ... check your imports that are generated by your IDE.

java - JAX-RS, path params don't work, sadly the reason was a wrong import for PathParam. so a big note to my desk if unchecked things doesn't work check your imports that are generated by  In JAX-RS @Path is used on method level to determinate the URI path to which the method responds. @PathParam is used to retrieve the value of an URI path variable. In other words you can use @PathParem to inject the value of URI parameter that defined in @Path expression, into method input parameters.

{} is not required in the method parameter, just give the name. Try the following:

 public Response getUser(@PathParam("id") String id) 

JAX-RS, path params don't work, I try to pass a parameter via GET to a REST method. @GET @Path("{id}") public Response getUser(@PathParam("id") String id) { Query qry = em. Path Parameters (@PathParam) Path parameters take the incoming URL and match parts of the path as a parameter. By including {name} in a @Path annotation, the resource can later access the matching part of the URI to a path parameter with the corresponding "name". Path parameters make parts of the request URL as parameters which can be useful in

The import can get defaulted to:

import javax.websocket.server.PathParam;

Replace it with the one from the JAX-RS API:

import javax.ws.rs.PathParam;

Chapter 13 Building RESTful Web Services with JAX-RS (The Java , The JAX-RS API uses Java programming language annotations to simplify the URI path parameters are extracted from the request URI, and the parameter If you don't set this property, the file index.jsp will appear by default when the  This guide covers all the standard JAX-RS Parameter Annotations used for Rest API development. @PathParam @DefaultValue @QueryParam @FormParam @MatrixParam @CookieParam @HeaderParam Let's see each annotation with an example.

The reason it would have not worked is the wrong import for PathParam. So import the javax.ws.rs.PathParam and check it again.

Chapter 3. JAX-RS Application, Resources and Sub-Resources, import javax.ws.rs.GET;. import javax.ws.rs.Path;. import javax.ws.rs.Produces;. @​Path Example 3.11. Obtaining general map of URI path and/or query parameters I.e. you don't need to use the @Context annotation. Another kind of​  As we saw in previous tutorials, JAX-RS supports extracting request values and mapping them into Java fields, properties and parameters using annotations such as @HeaderParam, @QueryParam, etc. JAX-RS also supports mapping of request body. In that case we don't have to use any JAX-RS annotations. such parameter is called entity parameter.

JAX-RS @Path URI matching example – Mkyong.com, In JAX-RS, you can use @Path to bind URI pattern to a Java method. brace “}”, is represents a parameter, and can be access with @PathParam . failed, don't match “[a-zA-Z][a-zA-Z_0-9]”, first character need “[a-zA-Z]”,  31 videos Play all Developing RESTful APIs with JAX-RS Java Brains "Uncle" Bob Martin - "The Future of Programming" - Duration: 1:18:21. Expert Talks Mobile 1,241,066 views

JAX-RS @PathParam example – Mkyong.com, In JAX-RS, you can use @PathParem to inject the value of URI parameter that defined in @Path expression, into Java method. JAX-RS optional path params example. GitHub Gist: instantly share code, notes, and snippets.

JAX-RS @Path URI Matching, Learn to use JAX-RS @Path annotation and write resource path in it for URI matching. Paths can be written in simple form (static or path parameter) or complex  JAX-RS @PathParam annotation example This page gives you an example using JAX-RS @PathParam annotation, which injects value from URI to your method input parameters. In the previous examples we have given details of application setup, dependencies, web.xml file configurations: If you want to know about these configuration, please refer these:

Comments
  • Happened the same to me, I was going crazy!
  • ya same here.Thanks!!
  • My bad, fixed this mistake but it's still empty :/