springmvc异常处理

public class MyExceptionResolver implements HandlerExceptionResolver{

	public ModelAndView resolveException(HttpServletRequest request,
		     HttpServletResponse response, Object handler, Exception ex) {
	       
	      System. out.println("==============异常开始=============" );
	       ex.printStackTrace();
	      System. out.println("==============异常结束=============" );
	      ModelAndView mv = new ModelAndView("error" );
	       mv.addObject( "exception", ex .toString().replaceAll("n", "<br/>"));
	       return mv ;
       }

}