我使用Spring restTemplate。我在单独的应用程序中将REST服务和客户端作为单元测试。我有返回用户列表和用户创建方法的方法:
@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();
}
如果我要求在浏览器中向我显示所有用户,它会向我显示xml。没关系。但是,当我尝试使用它时:
@Test
public void testGetAll() {
List list = new RestTemplate().getForObject(URL + "all", List.class);
System.out.println(list);
}
我得到了
WARNING: GET request for "http://localhost:8080/REST/all" resulted in 500 (Internal Server Error); invoking error handler
我试着调试一下。方法工作期间没有例外。浏览器向我展示了用户的xml。 有什么不对?
另外,我想知道如何从模板对象获取状态代码或消息(用于测试)?
感谢您的回答。
编辑:
我修改了我的测试方法:
@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);
}
我得到了例外:
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)
答案 0 :(得分:43)
RestTemplate template = new RestTemplate(true);
ResponseEntity<TblGps[]> responseEntity = restTemplate.getForEntity(urlGETList, TblGps[].class);
TblGps[]=responseEntity.getBody();
答案 1 :(得分:7)
您需要使用List
的具体实现,例如,您可以使用ArrayList
,请参阅此示例:
ResponseEntity<? extends ArrayList<User>> responseEntity = restTemplate.getForEntity(restEndPointUrl, (Class<? extends ArrayList<User>>)ArrayList.class, userId);
它甚至适用于完全通用的设置:
ResponseEntity<? extends ArrayList<HashMap<String,Object>>> responseEntity = restTemplate.getForEntity(restEndPointUrl, (Class<? extends ArrayList<HashMap<String,Object>>>)ArrayList.class, parameterId);
答案 2 :(得分:5)
设置Jaxb2RootElementHttpMessageConverter
后,您将覆盖RestTemplate
附带的默认转换器。其中一个默认转换器(我认为是字符串转换器)可以处理text/xml
类型。移除整个Jaxb2RootElementHttpMessageConverter
,但在预期ArrayList.class
而不是List.class
时保留该部分,这将有效:
@Test
public void testGetAll() {
RestTemplate template = new RestTemplate();
List list = template.getForObject(URL + "all",
ArrayList.class);
System.out.println(list);
}
您可能还需要添加accept
标头以选择使用text/xml
,而不是其他生产类型之一:
HttpHeaders requestHeaders = new HttpHeaders();
requestHeaders.setAccept(Arrays.asList(new MediaType[] {MediaType.TEXT_XML}));
并将exchange
与RestTemplate
(而不是getForObject
)一起使用:
List list = template.exchange(URL + "all", new HttpEntity<String>(requestHeaders()), ArrayList.class);
答案 3 :(得分:0)
您可以使用restTemplate.getForEntity()
。它将返回ResponseEntity
所有响应信息(包括状态)。