SpringBoot全局捕捉异常

新建一个类

@ControllerAdvice

public class GlobalDefaultExceptionHandler {

    @ExceptionHandler(Exception.class)
    @ResponseBody
    public String defaultExpectionHandler(HttpServletRequest req,Exception e){
//        返回视图
//        ModelAndView mv = new ModelAndView();
//        mv.setViewName("");
    return "服务器出错";
    }
}