Struts2自定义拦截器

LoginInterceptor.java

  
    

   
     
   
     package
   
      com.tq365.util;


   
     import
   
      javax.servlet.http.HttpServletRequest;

   
     import
   
      javax.servlet.http.HttpSession;


   
     import
   
      org.apache.struts2.ServletActionContext;


   
     import
   
      com.opensymphony.xwork2.ActionInvocation;

   
     import
   
      com.opensymphony.xwork2.interceptor.AbstractInterceptor;

   
     import
   
      com.tq365.vo.User;


   
     /**
   
     
 * 自定义的拦截器（放行登录操作和已经登录用户的操作）
 * 
   
     @author
   
      archie2010
 *
 
   
     */
   
     

   
     public
   
      
   
     class
   
      LoginInterceptor 
   
     extends
   
      AbstractInterceptor{

 
   
     private
   
      
   
     static
   
      
   
     final
   
      
   
     long
   
      serialVersionUID 
   
     =
   
      
   
     1406123004582563032L
   
     ;

 @Override
 
   
     public
   
      String intercept(ActionInvocation invocation) 
   
     throws
   
      Exception {
 HttpServletRequest request 
   
     =
   
      ServletActionContext.getRequest();
 HttpSession session 
   
     =
   
      ServletActionContext.getRequest().getSession();
 User user 
   
     =
   
      (User)session.getAttribute(
   
     "
   
     USER
   
     "
   
     );
 
   
     //
   
      请求的url
   
     

   
      String path 
   
     =
   
      request.getServletPath();
 
   
     boolean
   
      flag 
   
     =
   
      
   
     false
   
     ;
 
   
     if
   
     (
   
     "
   
     /loginuser.jspx
   
     "
   
     .equals(path)){
 flag 
   
     =
   
      
   
     true
   
     ;
 }
   
     else
   
     {
 
   
     if
   
     (user
   
     !=
   
     null
   
     ){
 flag 
   
     =
   
      
   
     true
   
     ;
 }
 }
 System.out.println(path);
 
   
     return
   
      flag 
   
     ?
   
      invocation.invoke() : 
   
     "
   
     error
   
     "
   
     ;
 }

}

  
    

struts.xml

  
    

   
     
   
      
   
     <
   
     interceptors
   
     >
   
     
 
   
     <!--
   
      login拦截器 
   
     -->
   
     
 
   
     <
   
     interceptor 
   
     name
   
     ="login"
   
      class
   
     ="com.tq365.util.LongInterceptor"
   
     />
   
     
 
 
   
     <
   
     interceptor-stack 
   
     name
   
     ="myInterceptor"
   
     >
   
     
 
 
   
     <
   
     interceptor-ref 
   
     name
   
     ="login"
   
     />
   
     
 
 
   
     <
   
     interceptor-ref 
   
     name
   
     ="paramsPrepareParamsStack"
   
     />
   
     
 
   
     </
   
     interceptor-stack
   
     >
   
     
 
   
     </
   
     interceptors
   
     >
   
     
 
   
     <
   
     default-interceptor-ref 
   
     name
   
     ="myInterceptor"
   
     />