有谁知道为什么我不能在 spring MVC 中的异常处理程序上使用 @ResponseStatus(reason = "My message")
同时仍然返回 @ResponseBody。似乎发生的是,如果我使用 reason
属性
// this exception handle works, the result is a 404 and the http body is the json serialised
// {"message", "the message"}
@ExceptionHandler
@ResponseStatus(value = HttpStatus.NOT_FOUND)
public Map<String, String> notFoundHandler(NotFoundException e){
return Collections.singletonMap("message", e.getMessage());
}
// this doesn't... the response is a 404 and the status line reads 'Really really not found'
// but the body is actually the standard Tomcat 404 page
@ExceptionHandler
@ResponseStatus(value = HttpStatus.NOT_FOUND, reason = "Really really not found")
public Map<String, String> reallyNotFoundHandler(ReallyNotFoundException e){
return Collections.singletonMap("message", e.getMessage());
}
code for this example在github上结束了。
最佳答案
看来这是AnnotationMethodHandlerExceptionResolver
private ModelAndView getModelAndView(Method handlerMethod, Object returnValue, ServletWebRequest webRequest)
throws Exception {
ResponseStatus responseStatusAnn = AnnotationUtils.findAnnotation(handlerMethod, ResponseStatus.class);
if (responseStatusAnn != null) {
HttpStatus responseStatus = responseStatusAnn.value();
String reason = responseStatusAnn.reason();
if (!StringUtils.hasText(reason)) {
// this doesn't commit the response
webRequest.getResponse().setStatus(responseStatus.value());
}
else {
// this commits the response such that any more calls to write to the
// response are ignored
webRequest.getResponse().sendError(responseStatus.value(), reason);
}
}
/// snip
}
这已在 SPR-8251 中报告给 Springsource :
关于java - Spring MVC : using @ResponseStatus(reason = '' ) on a @ResponseBody exception handler in tomcat,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/5637950/