Spring3中的mvc:interceptors標籤配置攔截器

mvc:interceptors

這個標籤用於註冊一個自定義攔截器或者是WebRequestInterceptors.

能夠經過定義URL來進行路徑請求攔截，能夠作到較爲細粒度的攔截控制。

例如在配置文件加入

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

xmlns:mvc="http://www.springframework.org/schema/mvc"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="

http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

http://www.springframework.org/schema/mvc

http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

<!-- 如下配置將攔截全部的URL請求 -->

<mvc:interceptors>

<bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor" />

</mvc:interceptors>

<!-- 如下配置將攔截特有的URL請求 -->

<mvc:interceptors>

<mvc:interceptor>

<mvc:mapping path="/secure/*"/>

<bean class="org.example.SecurityInterceptor" />

</mvc:interceptor>

<mvc:interceptor>

<mvc:mapping path="/admin/*.do"/>

<bean class="org.example.admin.ControlInterceptor" />

</mvc:interceptor>

</mvc:interceptors>

</beans>

定義的攔截器只須要實現

@Override

public boolean preHandle(HttpServletRequest req,HttpServletResponse res, Object handler)