marshalling work

spring-rest/src/main/java/org/baeldung/web/controller/FooController.java

@@ -23,8 +23,8 @@ public class FooController {
     // API - read
 
     @RequestMapping(method = RequestMethod.GET, value = "/foos/{id}")
-    public @ResponseBody
+    @ResponseBody
-    Foo findById(@PathVariable final long id) {
+    public Foo findById(@PathVariable final long id) {
         return new Foo(Long.parseLong(randomNumeric(2)), randomAlphabetic(4));
     }
 
@@ -32,8 +32,9 @@ public class FooController {
 
     @RequestMapping(method = RequestMethod.PUT, value = "/foos/{id}")
     @ResponseStatus(HttpStatus.OK)
-    public void updateFoo(@PathVariable("id") final String id, @RequestBody final Foo foo) {
+    @ResponseBody
+    public Foo updateFoo(@PathVariable("id") final String id, @RequestBody final Foo foo) {
         System.out.println(foo);
+        return foo;
     }
-
 }

spring-rest/src/test/java/org/baeldung/web/test/SpringHttpMessageConvertersIntegrationTestsCase.java

@@ -1,5 +1,8 @@
 package org.baeldung.web.test;
 
+import static org.hamcrest.Matchers.notNullValue;
+import static org.junit.Assert.assertThat;
+
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
@@ -13,6 +16,7 @@ import org.springframework.http.HttpMethod;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.http.converter.HttpMessageConverter;
+import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
 import org.springframework.http.converter.xml.MarshallingHttpMessageConverter;
 import org.springframework.oxm.xstream.XStreamMarshaller;
 import org.springframework.web.client.RestTemplate;
@@ -29,20 +33,17 @@ public class SpringHttpMessageConvertersIntegrationTestsCase {
      * server (in this case json)
      */
     @Test
-    public void testGetFoo() {
+    public void whenRetrievingAFoo_thenCorrect() {
         final String URI = BASE_URI + "foos/{id}";
 
         final RestTemplate restTemplate = new RestTemplate();
         final Foo resource = restTemplate.getForObject(URI, Foo.class, "1");
 
-        Assert.assertEquals(1l, resource.getId());
+        assertThat(resource, notNullValue());
     }
 
-    /**
-     * Specifying Accept Header with application/xml for getting the xml response from the server.
-     */
     @Test
-    public void testGetFooAcceptXML() {
+    public void givenConsumingXml_whenReadingTheFoo_thenCorrect() {
         final String URI = BASE_URI + "foos/{id}";
 
         final RestTemplate restTemplate = new RestTemplate();
@@ -55,22 +56,35 @@ public class SpringHttpMessageConvertersIntegrationTestsCase {
         final ResponseEntity<Foo> response = restTemplate.exchange(URI, HttpMethod.GET, entity, Foo.class, "1");
         final Foo resource = response.getBody();
 
-        Assert.assertEquals(1l, resource.getId());
+        assertThat(resource, notNullValue());
-
     }
 
-    /**
-     * Specifying Accept Header with application/xml for getting the xml response from the server.
-     */
     @Test
-    public void testPUTFooXML() {
+    public void givenConsumingJson_whenReadingTheFoo_thenCorrect() {
+        final String URI = BASE_URI + "foos/{id}";
+
+        final RestTemplate restTemplate = new RestTemplate();
+        restTemplate.setMessageConverters(getMessageConverters());
+
+        final HttpHeaders headers = new HttpHeaders();
+        headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
+        final HttpEntity<String> entity = new HttpEntity<String>(headers);
+
+        final ResponseEntity<Foo> response = restTemplate.exchange(URI, HttpMethod.GET, entity, Foo.class, "1");
+        final Foo resource = response.getBody();
+
+        assertThat(resource, notNullValue());
+    }
+
+    @Test
+    public void givenConsumingXml_whenWritingTheFoo_thenCorrect() {
         final String URI = BASE_URI + "foos/{id}";
         final RestTemplate restTemplate = new RestTemplate();
         restTemplate.setMessageConverters(getMessageConverters());
 
-        final Foo resource = new Foo(4, "andres");
+        final Foo resource = new Foo(4, "jason");
         final HttpHeaders headers = new HttpHeaders();
-        headers.setAccept(Arrays.asList(MediaType.APPLICATION_XML));
+        headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
         headers.setContentType((MediaType.APPLICATION_XML));
         final HttpEntity<Foo> entity = new HttpEntity<Foo>(resource, headers);
 
@@ -82,17 +96,16 @@ public class SpringHttpMessageConvertersIntegrationTestsCase {
 
     // UTIL
 
-    /**
-     * Configures Message Converters.
-     */
     private List<HttpMessageConverter<?>> getMessageConverters() {
         final List<HttpMessageConverter<?>> converters = new ArrayList<HttpMessageConverter<?>>();
-        // adds XML converter using XStreamMarshaller
-        final XStreamMarshaller marshaller = new XStreamMarshaller();
-        marshaller.setAnnotatedClasses(Foo.class);
 
-        final MarshallingHttpMessageConverter marshallingConverter = new MarshallingHttpMessageConverter(marshaller);
+        final MarshallingHttpMessageConverter xmlConverter = new MarshallingHttpMessageConverter();
-        converters.add(marshallingConverter);
+        final XStreamMarshaller xstreamMarshaller = new XStreamMarshaller();
+        xmlConverter.setMarshaller(xstreamMarshaller);
+        xmlConverter.setUnmarshaller(xstreamMarshaller);
+
+        converters.add(xmlConverter);
+        converters.add(new MappingJackson2HttpMessageConverter());
 
         return converters;
     }