SpringBoot异常处理之注解@ExceptionHander和@ControllerAdvice

只恨天高2025-04-17 10:20

springboot里处理异常有五种方式，看第2、3种：

2、注解@ExceptionHander

java 复制代码

@ExceptionHandler(value = {java.lang.NullPointerException.class})
public ModelAndView testExceptionHander(Exception e){
   ModelAndView modelAndView = new ModelAndView();
   modelAndView.addObject("exception",e);
   modelAndView.setViewName("error");
   return modelAndView;
}

java 复制代码

@ExceptionHandler(value = {java.lang.ArithmeticException.class})
public ModelAndView testExceptionHander1(Exception e){
    ModelAndView modelAndView = new ModelAndView();
    modelAndView.addObject("exception",e);
    modelAndView.setViewName("error");
    return modelAndView;
}

3、注解@ControllerAdvice

java 复制代码

@ControllerAdvice
public class ErrorController {
    @ExceptionHandler(value = {java.lang.NullPointerException.class})
    public ModelAndView testExceptionHander(Exception e){
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("exception",e);
        modelAndView.setViewName("error");
        return modelAndView;
    }
@ControllerAdvice
public class ErrorController {
    @ExceptionHandler(value = {java.lang.NullPointerException.class})
    public ModelAndView testExceptionHander(Exception e){
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("exception",e);
        modelAndView.setViewName("error");
        return modelAndView;
    }

java 复制代码

    @ExceptionHandler(value = {java.lang.ArithmeticException.class})
    public ModelAndView testExceptionHander1(Exception e){
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("exception",e);
        modelAndView.setViewName("error");
        return modelAndView;
    }
}