使用拦截器来拦截请求handlerInterceptor

来源：互联网发布：linux添加管理员权限编辑：程序博客网时间：2024/04/20 14:51

这个其实蛮简单的。。

就是自己写的拦截器继承

HandlerInterceptorAdapter

 这个类是实现了HandlerInterceptor接口的

有三个方法preHandle(..)

postHandle(..)执行时

afterCompletion(..)

如下例子：：：：【定义自己的类】

package samples;public class TimeBasedAccessInterceptor extends HandlerInterceptorAdapter {    private int openingTime;    private int closingTime;    public void setOpeningTime(int openingTime) {        this.openingTime = openingTime;    }    public void setClosingTime(int closingTime) {        this.closingTime = closingTime;    }    public boolean preHandle(            HttpServletRequest request,            HttpServletResponse response,            Object handler) throws Exception {        Calendar cal = Calendar.getInstance();        int hour = cal.get(HOUR_OF_DAY);        if (openingTime <= hour && hour < closingTime) {            return true;        } else {            response.sendRedirect("http://host.com/outsideOfficeHours.html");            return false;        }    }}

配置xml bean:

<beans>    <bean id="handlerMapping"          class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping">        <property name="interceptors">            <list>                <ref bean="officeHoursInterceptor"/>            </list>        </property>    </bean>    <bean id="officeHoursInterceptor"          class="samples.TimeBasedAccessInterceptor">        <property name="openingTime" value="9"/>        <property name="closingTime" value="18"/>    </bean><beans>

----------------但是我不知道为什么一直不知道拦截之后怎么处理？