WebMvcConfigurerAdapter拦截器执行顺序（转）

最新推荐文章于 2025-03-28 10:44:26 发布

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最新推荐文章于 2025-03-28 10:44:26 发布

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分类专栏： Spring 文章标签： java 测试

本文链接：https://blog.youkuaiyun.com/bug_yun/article/details/84856019

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本文详细介绍了SpringMVC中拦截器的实现方式，通过implements HandlerInterceptor接口创建拦截器，并探讨了配置文件中的设置。文章进一步解释了拦截器的执行流程，从preHandle到afterCompletion，阐述了拦截器的执行顺序。

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转自：http://blog.youkuaiyun.com/u010509052/article/details/51120580

1.springMVC中拦截器实现这个接口implements HandlerInterceptor

第一个拦截器

public class MyInterceptor1 implements HandlerInterceptor{  
  
 public void afterCompletion(HttpServletRequest arg0,  
   HttpServletResponse arg1, Object arg2, Exception arg3)  
   throws Exception {  
  System.out.println("=======> my interceptor1 :afterCompletion() ");  
 }  
  
 public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,  
   Object arg2, ModelAndView arg3) throws Exception {  
  // TODO Auto-generated method stub  
  System.out.println("=======> my interceptor1:postHandle() ");  
 }  
  
 public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1,  
   Object arg2) throws Exception {  
  System.out.println("=======> my interceptor1:preHandle() ");  
  return true;  
 }  
  
}

第二个拦截器

public class MyInterceptor2 implements HandlerInterceptor{  
  
    public void afterCompletion(HttpServletRequest arg0,  
            HttpServletResponse arg1, Object arg2, Exception arg3)  
            throws Exception {  
        System.out.println("=======> my interceptor2:afterCompletion() ");  
    }  
  
    public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,  
            Object arg2, ModelAndView arg3) throws Exception {  
        // TODO Auto-generated method stub  
        System.out.println("=======> my interceptor2:postHandle() ");  
    }  
  
    public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1,  
            Object arg2) throws Exception {  
        System.out.println("=======> my interceptor2:preHandle()");  
        return true;  
    }

2.在springmvc的配置文件中

<mvc:interceptors>  
            <mvc:interceptor>  
                <mvc:mapping path="/**"/>  
                <bean class="com.lifeng.interceptor.MyInterceptor1" />  
            </mvc:interceptor>  
              
            <mvc:interceptor>  
                <mvc:mapping path="/**"/>  
                <bean class="com.lifeng.interceptor.MyInterceptor2" />  
            </mvc:interceptor>  
              
 </mvc:interceptors>

3.执行顺序：

=======> my interceptor1:preHandle()
=======> my interceptor2:preHandle()
.......
=======> my interceptor2:postHandle()
=======> my interceptor1:postHandle()
=======> my interceptor2:afterCompletion()
=======> my interceptor1 :afterCompletion()