Struts2-学习笔记系列(14)-拦截器

 1 public class MyInterceptor extends AbstractInterceptor {
 2 
 3     private String name;
 4 
 5 
 6     @Override
 7     public String intercept(ActionInvocation actionInvocation) throws Exception {
 8         //获取被拦截的action实例
 9         LoginAction action = (LoginAction) actionInvocation.getAction();
10         System.out.print(name + " 拦截器开始执行：" + new Date());
11         long start = System.currentTimeMillis();
12         //执行该拦截器的下一个拦截器
13         //然后调用action 的执行方法
14         String result = actionInvocation.invoke();
15         System.out.print(name + " action执行完成后：" + new Date());
16         long end = System.currentTimeMillis();
17         System.out.print("执行完该action的时间为：" + (end - start) + "毫秒");
18         return result;
19     }
20 
21     public void setName(String name) {
22         this.name = name;
23     }
24 }
25 
26  

 1 <package name="lee" extends="struts-default">
 2     <interceptors>
 3         <interceptor name="zcx" class="interceptors.MyInterceptor">
 4             <param name="name"></param>
 5         </interceptor>
 6     </interceptors>
 7     <action name="login" class="zcx.controller.LoginAction">
 8         <!-- 配置名为input的逻辑视图，当转换失败后转入该逻辑视图 -->
 9         <result name="input">/WEB-INF/content/input.jsp</result>
10         <result>/WEB-INF/content/welcome.jsp</result>
11         <result name="error">/WEB-INF/content/welcome.jsp</result>
12         <interceptor-ref name="defaultStack"></interceptor-ref>
13         <interceptor-ref name="zcx">
14             <param name="name">改名后的拦截器</param>
15         </interceptor-ref>
16     </action>
17     <action name="*">
18         <result>/WEB-INF/content/{1}.jsp</result>
19     </action>
20 </package>

 1 public class MyMethondInterceptor extends MethodFilterInterceptor {
 2     private String name;
 3 
 4     @Override
 5     protected String doIntercept(ActionInvocation actionInvocation) throws Exception {
 6         //获取被拦截的action实例
 7         LoginAction action = (LoginAction) actionInvocation.getAction();
 8         System.out.print(name + " 拦截器开始执行：" + new Date());
 9         long start = System.currentTimeMillis();
10         //执行该拦截器的下一个拦截器
11         //然后调用action 的执行方法
12         String result = actionInvocation.invoke();
13         System.out.print(name + " action执行完成后：" + new Date());
14         long end = System.currentTimeMillis();
15         System.out.print("执行完该action的时间为：" + (end - start) + "毫秒");
16         return result;
17     }
18 
19     public void setName(String name) {
20         this.name = name;
21     }
22 }

 1 <package name="lee" extends="struts-default">
 2     <interceptors>
 3         <interceptor name="zcx" class="interceptors.MyMethondInterceptor">
 4             <param name="name">嘻嘻</param>
 5         </interceptor>
 6     </interceptors>
 7     <action name="login" class="zcx.controller.LoginAction">
 8         <!-- 配置名为input的逻辑视图，当转换失败后转入该逻辑视图 -->
 9         <result name="input">/WEB-INF/content/input.jsp</result>
10         <result>/WEB-INF/content/welcome.jsp</result>
11         <result name="error">/WEB-INF/content/welcome.jsp</result>
12         <interceptor-ref name="defaultStack"></interceptor-ref>
13         <interceptor-ref name="zcx">
14             <param name="name">改名后的拦截器</param>
15             <!--指定execute不需要被拦截-->
16             <param name="excludeMethods">execute</param>
17             <param name="includeMethods">execute</param>
18         </interceptor-ref>
19     </action>
20     <action name="*">
21         <result>/WEB-INF/content/{1}.jsp</result>
22     </action>
23 </package>