Spring第七篇【异常处理】

SimpleMappingExceptionResolver

    <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
        <property name="defaultErrorView" value="error.jsp"/>
        <property name="exceptionMappings">
            <props>
                <prop key="java.lang.ArithmeticException">error1.jsp</prop>
                <prop key="java.lang.NullPointerException">error2.jsp</prop>
            </props>
        </property>
    </bean>

自定义异常处理器

      <!--注册bean-->
      <bean class="com.MyExceptionResolver"/>

package com;

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

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

public class MyExceptionResolver implements HandlerExceptionResolver {
    @Override
    public ModelAndView resolveException(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) {
        ModelAndView modelAndView = new ModelAndView();
        if(e instanceof ArithmeticException){
            modelAndView.setViewName("error1.jsp");
        }else if(e instanceof NullPointerException){
            modelAndView.setViewName("error2.jsp");
        }else {
            modelAndView.setViewName("error.jsp");
        }
        return modelAndView;
    }
}