SpringMVC中的统一异常处理

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  • 实现HandlerExceptionResolver 接口
@Component
public class MyHandlerExceptionResolver implements HandlerExceptionResolver {
    /**
     * 解析异常
     * @param request  请求对象
     * @param response 响应对象
     * @param handler 处理器
     * @param ex  异常对象
     * @return
     */
    @Override
    public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
//        System.out.println("出现了异常");
        ex.printStackTrace();
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("message", "系统错误,请联系管理员!!!");
        modelAndView.setViewName("error");
        return modelAndView;
    }
}
  • springmvc.xml配置异常处理器
<bean class="com.itheima.exception.MyHandlerExceptionResolver"></bean>