springmvc拦截器和拦截器执行顺序

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最新推荐文章于 2025-06-23 10:43:17 发布

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分类专栏： springmvc 文章标签： spring mvc

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本文详细介绍了SpringMVC中的拦截器（HandlerInterceptor）及其执行顺序。包括自定义拦截器的实现方式，如FirstInterceptor和SecondInterceptor，并展示了不同场景下拦截器方法的调用顺序，特别是当拦截器方法抛出异常时的行为。

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springmvc拦截器和拦截器执行顺序

HandlerInterceptor和HandlerInterceptorAdapter
HandlerInterceptor接口，子类实现后要实现接口中所有方法。
HandlerInterceptorAdapter抽象类，子类继承后重写需要使用到的方法即可。

自定义拦截器执行顺序

自定义拦截器FirstInterceptor：

public class FirstInterceptor implements HandlerInterceptor {

    @Override
    public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
            throws Exception {
        System.out.println("FirstInterceptor.afterCompletion()");
    }

    @Override
    public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
            throws Exception {
        System.out.println("FirstInterceptor.postHandle()");
    }

    @Override
    public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2) throws Exception {
        System.out.println("FirstInterceptor.preHandle()");
        return true;
    }
}

自定义拦截器SecondInterceptor

public class SecondInterceptor implements HandlerInterceptor {

    @Override
    public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
            throws Exception {
        System.out.println("SecondInterceptor.afterCompletion()");
    }

    @Override
    public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
            throws Exception {
        System.out.println("SecondInterceptor.postHandle()");
    }

    @Override
    public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2) throws Exception {
        System.out.println("SecondInterceptor.preHandle()");
        return true;
    }
}

springmvc配置文件的配置如下：

    <mvc:interceptors>
        <bean class="com.springmvc.intercepter.FirstInterceptor" />
        <bean class="com.springmvc.intercepter.SecondInterceptor" />
    </mvc:interceptors>

执行顺序：

FirstInterceptor.preHandle()
SecondInterceptor.preHandle()
SecondInterceptor.postHandle()
FirstInterceptor.postHandle()
SecondInterceptor.afterCompletion()
FirstInterceptor.afterCompletion()

自定义拦截器抛出异常的执行处理

FirstInterceptor方法preHandle抛异常

FirstInterceptor.preHandle()
七月 06, 2017 9:48:33 上午 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet [springDispatcherServlet] in context with path [/springmvc] threw exception [Request processing failed; nested exception is java.lang.Exception] with root cause
java.lang.Exception

以上，
FirstInterceptor.preHandle()执行抛异常
->SecondInterceptor.preHandle()不执行
->SecondInterceptor.postHandle()不执行
->FirstInterceptor.postHandle()不执行
->SecondInterceptor.afterCompletion()不执行
->FirstInterceptor.afterCompletion()不执行

SecondInterceptor方法preHandle抛异常

FirstInterceptor.preHandle()
SecondInterceptor.preHandle()
FirstInterceptor.afterCompletion()
七月 06, 2017 9:51:45 上午 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet [springDispatcherServlet] in context with path [/springmvc] threw exception [Request processing failed; nested exception is java.lang.Exception] with root cause
java.lang.Exception

以上，
FirstInterceptor.preHandle()执行
->SecondInterceptor.preHandle()执行抛异常
->SecondInterceptor.postHandle()不执行
->FirstInterceptor.postHandle()不执行
->SecondInterceptor.afterCompletion()不执行
->FirstInterceptor.afterCompletion()执行

FirstInterceptor方法postHandle抛异常

FirstInterceptor.preHandle()
SecondInterceptor.preHandle()
SecondInterceptor.postHandle()
FirstInterceptor.postHandle()
SecondInterceptor.afterCompletion()
FirstInterceptor.afterCompletion()
七月 06, 2017 10:05:56 上午 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet [springDispatcherServlet] in context with path [/springmvc] threw exception [Request processing failed; nested exception is java.lang.Exception] with root cause
java.lang.Exception

FirstInterceptor.preHandle()执行
->SecondInterceptor.preHandle()执行
->SecondInterceptor.postHandle()执行
->FirstInterceptor.postHandle()执行抛异常
->SecondInterceptor.afterCompletion()执行
->FirstInterceptor.afterCompletion()执行

SecondInterceptor方法postHandle抛异常

FirstInterceptor.preHandle()
SecondInterceptor.preHandle()
SecondInterceptor.postHandle()
SecondInterceptor.afterCompletion()
FirstInterceptor.afterCompletion()
七月 06, 2017 10:00:10 上午 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet [springDispatcherServlet] in context with path [/springmvc] threw exception [Request processing failed; nested exception is java.lang.Exception] with root cause
java.lang.Exception

FirstInterceptor.preHandle()执行
->SecondInterceptor.preHandle()执行
->SecondInterceptor.postHandle()执行抛异常
->FirstInterceptor.postHandle()不执行
->SecondInterceptor.afterCompletion()执行
->FirstInterceptor.afterCompletion()执行