我的问题与测试Spring @RestController有关,它也使用@ControllerAdvice和@ExceptionHandler.这是代码:
@ControllerAdvice类:
@ControllerAdvice
public class MyAppExceptionHandler {
@ExceptionHandler({ NoSuchEntityException.class })
@ResponseStatus(value = HttpStatus.NOT_FOUND)
public @ResponseBody
ErrorDTO handleNotFoundException(Exception ex) throws IOException {
return new ErrorDTO.Builder().setStatus(HttpStatus.NOT_FOUND)
.setCause(ex.getClass().getName())
.setThrowable(ex).build();
}
}
在应用程序中使用它时一切正常 – 通过JSON解释完美地获得404响应,但在测试期间尝试使用它时 – 会发生不好的事情.
我的考试班:
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = { WebConfig.class })
@WebAppConfiguration
public class SomeTest {
@Mock
private SomeService service;
@InjectMocks
private SomeController controller;
private mockmvc mvc;
private ExceptionHandlerExceptionResolver createExceptionResolver() {
ExceptionHandlerExceptionResolver exceptionResolver = new ExceptionHandlerExceptionResolver() {
@Override
protected ServletinvocableHandlerMethod getExceptionHandlerMethod(
HandlerMethod handlerMethod,Exception exception) {
Method method = new ExceptionHandlerMethodResolver(
MyAppExceptionHandler.class).resolveMethod(exception);
return new ServletinvocableHandlerMethod(
new MyAppExceptionHandler(),method);
}
};
exceptionResolver.afterPropertiesSet();
return exceptionResolver;
}
@Before
public void setup() {
MockitoAnnotations.initMocks(this);
mvc = mockmvcBuilders.standalonesetup(controller)
.setHandlerExceptionResolvers(createExceptionResolver())
.build();
}
@Test
public void thatExceptionHappens() throws Exception {
when(service.get(10)).thenThrow(new NoSuchEntityException(Some.class,10));
mvc.perform(get("/api/some/10")).andExpect(status().isNotFound());
}
}
尝试运行时:
2014-07-15 19:35:01.376 [main] ERROR com.package.someTest$1 - Failed to invoke @ExceptionHandler method: public com.package.ErrorDTO com.package.MyAppExceptionHandler.handleNotFoundException(java.lang.Exception) throws java.io.IOException
org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation
我认为可能在测试我的@ExceptionHandler期间没有加载MappingJackson2HttpMessageConverter(但它在WebConfig.class中配置,并且在尝试执行典型测试时 – 一个没有抛出任何异常 – 一切正常).
在此先感谢您的帮助.
最佳答案
我不确定这是否是最佳解决方案(我想听听另一个),
但这就是我如何解决你面临的问题:
但这就是我如何解决你面临的问题:
将此行添加到createExceptionResolver():
exceptionResolver.getMessageConverters().add(
new MappingJackson2HttpMessageConverter());
像这样的东西:
private ExceptionHandlerExceptionResolver createExceptionResolver() {
ExceptionHandlerExceptionResolver exceptionResolver = new ExceptionHandlerExceptionResolver() {
@Override
protected ServletinvocableHandlerMethod getExceptionHandlerMethod(
HandlerMethod handlerMethod,Exception exception) {
Method method = new ExceptionHandlerMethodResolver(
MyAppExceptionHandler.class).resolveMethod(exception);
return new ServletinvocableHandlerMethod(
new MyAppExceptionHandler(),method);
}
};
exceptionResolver.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
exceptionResolver.afterPropertiesSet();
return exceptionResolver;
}
由于某些我不知道的原因,Spring没有加载我的MappingJackson2HttpMessageConverter.
这条线修复了我的问题.
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