java - 自定义错误请求HTTP400页面Spring MVC

Question

当错误的请求完成并返回HTTP400错误代码时，是否可以自定义从Spring返回的html页面？

Answer 1

是的，您可以实现这一目标。
您需要定义全局错误处理程序 ControllerAdvice 批注。

示例代码为:

@ControllerAdvice
public class GlobalExceptionHandler {

    public static final String DEFAULT_ERROR_VIEW = "error";

    @ExceptionHandler(value = Exception.class)
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public ModelAndView defaultErrorHandler(HttpServletRequest req, Exception e) throws Exception {

        // If the exception is annotated with @ResponseStatus rethrow it and let
        // the framework handle it.
        if (AnnotationUtils.findAnnotation(e.getClass(), ResponseStatus.class) != null)
            throw e;

        // setup and send the user to a default error-view.
        ModelAndView mav = new ModelAndView();
        mav.addObject("exception", e);
        mav.addObject("url", req.getRequestURL());
        mav.setViewName(DEFAULT_ERROR_VIEW);
        return mav;
    }
}

进一步阅读:

https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/web/bind/annotation/ControllerAdvice.html

https://spring.io/blog/2013/11/01/exception-handling-in-spring-mvc