REST client restTemplate can't get Collection of objects

Question

I use Spring restTemplate. I made a REST service and client as unit test in separated application. I have method that return List of users and method for user creating:

@GET @Produces({ MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON,         MediaType.TEXT_XML }) @Path("/all") public Response getAllUsers() {     List<User> list = dao.getAll();     GenericEntity<List<User>> result = new GenericEntity<List<User>>(list) {     };     return Response.status(Status.OK).entity(result).build(); } 

If I request to show me all users in browser, it displays to me xml. It's OK. But, when I try to use this:

@Test public void testGetAll() {     List list = new RestTemplate().getForObject(URL + "all", List.class);     System.out.println(list); } 

I got

WARNING: GET request for "http://localhost:8080/REST/all" resulted in 500 (Internal Server Error); invoking error handler 

I tried to debug this. No exceptions during method works. And browser shows me the xml with users. What can be wrong?

Also, I want to know, how I can get status code or message from template object (for test)?

Thanks for your answers.

EDITED:

I modified my test method:

@Test public void testGetAll() {     RestTemplate template = new RestTemplate();      List<HttpMessageConverter<?>> messageConverters = new    ArrayList<HttpMessageConverter<?>>();     Jaxb2RootElementHttpMessageConverter jaxbMessageConverter = new Jaxb2RootElementHttpMessageConverter();     List<MediaType> mediaTypes = new ArrayList<MediaType>();     mediaTypes.add(MediaType.APPLICATION_XML);     jaxbMessageConverter.setSupportedMediaTypes(mediaTypes);     messageConverters.add(jaxbMessageConverter);      template.setMessageConverters(messageConverters);     List list = template.getForObject(URL + "all",             ArrayList.class);     System.out.println(list); } 

And I got exception:

org.springframework.web.client.RestClientException: Could not extract response: no suitable HttpMessageConverter found for response type [class java.util.ArrayList] and content type [application/xml] at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:107) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:496) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:452) at org.springframework.web.client.RestTemplate.getForObject(RestTemplate.java:222) at com.nixsolutions.web.service.rest.UserRESTServiceTest.testGetAll(UserRESTServiceTest.java:61) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) at org.junit.runners.ParentRunner.run(ParentRunner.java:309) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) 

Answer 1

maybe this way ....

RestTemplate template = new RestTemplate(true);   ResponseEntity<TblGps[]> responseEntity = restTemplate.getForEntity(urlGETList, TblGps[].class);  TblGps[]=responseEntity.getBody();