SpringMVC异常处理 SpringMVC异常处理器编写及配置

 @Data
 public class SysException extends Exception {
 private String message;
 public SysException(String message) {
  this.message = message;
   }
 }

public class SysExceptionResolve implements HandlerExceptionResolver {
@Override
public ModelAndView resolveException(HttpServletRequest httpServletRequest,
                   HttpServletResponse httpServletResponse,
                   Object o,
                   Exception e) {
  //处理异常业务逻辑
  SysException sys = null;
  if(e instanceof SysException){
    sys = (SysException) e;
  }else{
    //如果抛出的不是系统自定义异常则重新构造一个系统错误异常。
    sys = new SysException("系统自定义异常....");
  }
  //携带异常信息跳转到提示页面
  ModelAndView mv = new ModelAndView();
  mv.addObject("errorMsg",sys.getMessage());
  mv.setViewName("error");
  return mv;
  }
 }