spring mvc 全局异常处理

package com.tool;

public class MyException extends Exception{
    public String Msg;
    public String ErrCode;
    public MyException(String msg,String code)
    {
        super(msg);
        Msg=msg;
        ErrCode=code;
    }
}

package com.tool;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.ModelAndView;

public class MyExceptionHandler implements HandlerExceptionResolver {

    public ModelAndView resolveException(HttpServletRequest request,
            HttpServletResponse response, Object handler, Exception ex) {
        Map<String, Object> model = new HashMap<String, Object>();
        model.put("ex", ex.getMessage());
        // 这里可根据不同错误转向不同页面
        if (ex instanceof MyException) {
            return new ModelAndView("error", model);
        } else {
            return new ModelAndView("error", model);
        }
    }
}

<bean id="exceptionResolver" class="com.tool.MyExceptionHandler" />