SpringMVC Interceptor攔截器
阿新 • • 發佈:2018-12-20
今天偶爾看見的,以前還沒見過,就瞭解下
該攔截器主要是:在進Controller之前,
出Controller之後到達檢視之前,
渲染檢視之後,分別呼叫.
主要用途:https://www.cnblogs.com/maybo/p/5189540.html
1.先自定義實現HandlerInterceptor介面:
public class handlerInterceptor implements HandlerInterceptor{ private static org.slf4j.Logger logger=LoggerFactory.getLogger(handlerInterceptor.class); public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { logger.info("進入。。。preHandle"+request.getRequestURI().toString()); return true; } public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { // TODO Auto-generated method stub logger.info("進入。。。postHandle"+request.getRequestURI().toString()); } public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { // TODO Auto-generated method stub logger.info("進入。。。afterHandle"+request.getRequestURI().toString()); } }
2.寫進配置檔案
<mvc:interceptors> <mvc:interceptor> <!--攔截什麼路徑 --> <mvc:mapping path="/**"/> <!-- 不攔截什麼路徑--> <mvc:exclude-mapping path="/user/index"/> <!--剛剛實現的介面--> <bean class="Controller.handlerInterceptor"></bean> </mvc:interceptor> </mvc:interceptors>
控制檯: