Spring3 配置拦截器，HandlerInterceptorAdapter

自己的拦截器需要继承org.springframework.web.servlet.handler.HandlerInterceptorAdapter， 根据自己的业务需求复写其的几个方法 ?

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import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.web.servlet.ModelAndView;import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;/** * 用户登录会话校验 * */public class LoginInterceptor extends HandlerInterceptorAdapter  {    private String mappingURL;    public void setMappingURL(String mappingURL) {        this.mappingURL = mappingURL;    }            /**     * 在DispatcherServlet完全处理完请求后被调用     */    @Override    public void afterCompletion(HttpServletRequest arg0,            HttpServletResponse arg1, Object arg2, Exception arg3)            throws Exception {       System.out.println("--afterCompletion");        // TODO Auto-generated method stub            }            /**     * 在业务处理器处理请求执行完成后,生成视图之前执行的动作     */    @Override    public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,            Object arg2, ModelAndView arg3) throws Exception {        System.out.println("--postHandle");        // TODO Auto-generated method stub            }            /**     * 在业务处理之前调用     */    @Override    public boolean preHandle(HttpServletRequest request, HttpServletResponse response,Object arg2) throws Exception {        System.out.println("--preHandle");        String url=request.getRequestURL().toString();                   //       // UserInfo userInfo = (UserInfo) request.getSession().getAttribute( "userInfo");//        if (mappingURL == null || !url.matches(mappingURL)) {//            response.sendRedirect("/login.htm");//            return false;//        }             return true;     }}

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applicationContext.xml内添加:

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<!-- 拦截器 -->    <mvc:interceptors><mvc:interceptor><mvc:mapping path="/student/*"/><bean /></mvc:interceptor></mvc:interceptors>

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