springMVC的HandlerInterceptor拦截器

/**
* @author Beldon
*/
@Component
public class GlobalInterceptor implements HandlerInterceptor {
//Controller 方法调用之前执行
public boolean preHandle(HttpServletRequest request,
HttpServletResponse response, Object handler) throws Exception {
return true;
}

//Controller 方法调用之后执行
public void postHandle(HttpServletRequest request,
HttpServletResponse response Object handler,
ModelAndView modelAndView) throws Exception {
if (null == modelAndView) {
return;
}
String path = request.getContextPath();
String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path;
//网站basePath
modelAndView.addObject("BASE_PATH", basePath);
}

public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)throws Exception {
// TODO Auto-generated method stub

}

}

<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**"/>
<bean class="gdut.ecms.interceptor.GlobalInterceptor"/>
</mvc:interceptor>
</mvc:interceptors>