//加上该注解,交给IOC管理
@Component
public class CustomExceptionResolver implements HandlerExceptionResolver {

	@Override
	public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler,
			Exception ex) {
		//统一处理异常
		CustomException customException = null;
		if(ex instanceof CustomException){
			customException = (CustomException) ex;
		} else {
			customException = new CustomException("系统错误，请与系统管理 员联系！");
		}
		
		//设置数据
		ModelAndView modelAndView = new ModelAndView();
		modelAndView.addObject("message", customException.getMessage());
		modelAndView.setViewName("error");
		
		return modelAndView;
	}

}