Java Rest - send parametrized List using GET method

java, jax-rs, jersey, rest

Solution

Use GenericType.

List<User> users = webResource.accept(MediaType.APPLICATION_JSON)
   .get(new GenericType<List<User>>() {});

UPDATE

`ClientResponse` also overloads getEntity to accept `GenericType`s.

List<User> users = response.getEntity(new GenericType<List<User>>() {});

Problem

I am trying to send a List by GET method. Here is my Server side: ``` @GET @Produces(MediaType.APPLICATION_JSON) public List<User> getUsers(){ return managment.getUsers(); } ``` And my client side: ``` public static void getUsers(){ try { ClientConfig clientConfig = new DefaultClientConfig(); clientConfig.getFeatures().put(JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE); Client client = Client.create(clientConfig); WebResource webResource = client .resource("http://localhost:8080/Serwer07/user"); ClientResponse response = webResource.accept("application/json") .get(ClientResponse.class); if (response.getStatus() != 200) { throw new RuntimeException("Failed : HTTP error code : " + response.getStatus()); } List users = response.getEntity(List.class); User user = (User) users.get(0); //cannot cast e.printStackTrace(); } } ``` I have problem with cast from Java Object to User. How can I send this List ? Thanks in advance.

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