异常处理 --springmvc中

A：全局异常处理
定义一个异常处理类
注意：不要忘记交给spring管理–@Controller

//实现了HandlerExceptionResolver接口
@Controller
public class ExceptionHandlerResolver implements HandlerExceptionResolver{

	@Override
	public ModelAndView resolveException(HttpServletRequest httpServletRequest, 
			HttpServletResponse httpServletResponse, Object object,
			Exception exception) {
		
		String message=exception.getMessage();
		ModelAndView modelAndView=new ModelAndView();
		modelAndView.addObject("message", message);
		modelAndView.setViewName("/error.jsp");
		return modelAndView;
	}

}

B：同一个controller中的异常处理

//使用@ExceptionHandler   注解

	@ExceptionHandler
	 public ModelAndView exception(Exception exception){
		 
		 ModelAndView modelAndView=new ModelAndView();
		 modelAndView.addObject("message", exception.getMessage());
		 modelAndView.setViewName("/error.jsp");
		 return modelAndView;
	 }
	 
	 @RequestMapping("/test6")
	 public String test6() throws Exception{
		 int i=5/0;
		 System.out.println("====");
		 return "redirect:/index.jsp";
	 }