尽管有 @ResponseStatus 注释，ResponseEntityExceptionHandler 不会向客户端发送错误代码

Question

我想阻止 spring 将 Runtimexceptions 的完整堆栈跟踪发送到前端。我做了这样的事情：

@ControllerAdvice
public class RestErrorHandler extends ResponseEntityExceptionHandler {

    @ExceptionHandler(Exception.class)
    @ResponseStatus(value = HttpStatus.INTERNAL_SERVER_ERROR)
    @Override
    protected ResponseEntity<Object> handleExceptionInternal(Exception e, Object body, 
               HttpHeaders headers, HttpStatus status, WebRequest request) {
        logger.error("Error happened while executing controller.", e);
        return null;
    }
}

我的objective是只向前端发送错误代码，不发送任何其他内容。以上方法returns status 200 OK 到前端。应该返回什么而不是 null ？

Answer 1

与@ResponseStatus, if providing only a value, HttpServletResponse.setStatus(int)一起使用：

This method is used to set the return status code when there is no error (for example, for the SC_OK or SC_MOVED_TEMPORARILY status codes).

If this method is used to set an error code, then the container's error page mechanism will not be triggered. If there is an error and the caller wishes to invoke an error page defined in the web application, then sendError(int, java.lang.String) must be used instead.

如果提供 reason as well, then HttpServletResponse.sendError(int, String) 则改为使用。

@ControllerAdvice
public class RestErrorHandler {
    @ResponseStatus(value = HttpStatus.INTERNAL_SERVER_ERROR, reason = "INTERNAL_SERVER_ERROR")
    @ExceptionHandler(Exception.class)
    public void handleConflict(Exception e) {
        // log me
    }
}

尽管有 @ResponseStatus 注释，ResponseEntityExceptionHandler 不会向客户端发送错误代码

ResponseEntityExceptionHandler does not send an error code to the client despite @ResponseStatus annotation

java

exception-handling

spring-mvc

exceptionhandler