@ControllerAdvice注解的使用、全局异常捕获、自定义异常捕获

@ControllerAdvice
public class DefaultExceptionHandler {

    @ExceptionHandler({UnauthorizedException.class})
    @ResponseStatus(HttpStatus.UNAUTHORIZED)
    public ModelAndView processUnauthenticatedException(NativeWebRequest request, UnauthorizedException e) {
        ModelAndView mv = new ModelAndView();
        mv.addObject("exception", e);
        mv.setViewName("/Error/Unauthorized");
        return mv;
    }


    @ExceptionHandler({RuntimeException.class})
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public ModelAndView processRuntimeException(NativeWebRequest request, RuntimeException e) {
        ModelAndView mv = new ModelAndView();
        mv.addObject("exception", e);
        mv.setViewName("/Error/Error");
        return mv;
    }

    @ExceptionHandler({MessageException.class})
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public ModelAndView processMessageException(NativeWebRequest request, MessageException e) {
        ModelAndView mv = new ModelAndView();
        mv.addObject("exception", e);
        mv.setViewName("/Error/NotFound");
        return mv;
    }

    @ExceptionHandler({DuplicateKeyException.class})
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public ModelAndView processDuplicateKeyException(NativeWebRequest request, DuplicateKeyException e) {
        ModelAndView mv = new ModelAndView();
        mv.addObject("exception", e);
        mv.setViewName("/Error/500");
        return mv;
    }

    @ExceptionHandler({Exception.class})
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public ModelAndView processException(NativeWebRequest request, Exception e) {
        ModelAndView mv = new ModelAndView();
        mv.addObject("exception", e);
        mv.setViewName("/Error/404");
        return mv;
    }

}

捕获异常也可以返回json：

@ExceptionHandler
@ResponseBody
public APIManageBaseResp exceptionHandler(Exception e) {
    logger.error("调用接口出现异常:{}",e);
    APIManageBaseResp<String> resp = new APIManageBaseResp();
    resp.setResultCode(HttpStatus.SC_INTERNAL_SERVER_ERROR);
    if(e instanceof MessageException){
        resp.setErrorMsg(e.getMessage());
    }else{
        resp.setErrorMsg("调用接口出现异常:"+e.getMessage());
    }
    resp.setDataFiled("");
    return resp;
}

@RequestMapping(value = "/testFacade")
@ResponseBody
public String testFacade() {
    int a = 1/0;

    return "ok";
}


@RequestMapping(value = "/testFacade1")
@ResponseBody
public String testFacade1() throws MessageException {
    throw new MessageException("错了en ");

}


@RequestMapping(value = "/testFacade2")
@ResponseBody
public String testFacade2() {
    throw new UnauthorizedException("错了b ");

}


@RequestMapping(value = "/testFacade3")
@ResponseBody
public String testFacade3() {
    throw new RuntimeException("错了a ");

}