structs2.8创建拦截器

控制层

 public class PrintUsername {
     private String username;

     public String getUsername() {
         return username;
     }

     public void setUsername(String username) {
         this.username = username;
     }

     public String execute(){
         System.out.println("PrintUSrn execute()");
         return "toPrintUsernameJSP";
     }
 }

配置struts.xml

 <struts>
 <package name="struct2.8" extends="struts-default">

     <interceptors>
         <interceptor name="myinterceptor" class="myinterceptor.MyInterceptor">
         </interceptor>
         <interceptor-stack name="myInterceptorStack">
             <interceptor-ref name="defaultStack"></interceptor-ref>
             <interceptor-ref name="myinterceptor"></interceptor-ref>
         </interceptor-stack>
     </interceptors>

     <default-interceptor-ref name="myInterceptorStack"></default-interceptor-ref>

     <action name="printUsername" class="controller.PrintUsername">
         <result name="toPrintUsernameJSP">
             /printUsername.jsp
         </result>
     </action>
 </package>

 </struts>

显示层列出

控制台界面