Spring 拦截器配置

新建一个类继承extends HandlerInterceptorAdapter
重写方法
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception{
里面写要拦截的代码
}

然后在spring-mvc.xml中配置（下面是个例子）

<mvc:interceptors>
    <mvc:interceptor>
        <mvc:mapping path="拦截的地址如：/index/**" />
        <bean class="com.*.*.interceptor.RequestInterceptor" />
    </mvc:interceptor>
</mvc:interceptors>