The Interceptor is triggered when ajax initiates an action.

The Interceptor is triggered when ajax initiates an action.

A problem occurred during project creation. When ajax initiates an action and triggers the interceptor, the returned value will not initiate a jump if it does not receive the same result, the pos form t can be used for submission.

 

After a long struggle, I have found a method that is not very scientific. I hope that someone with good intentions will find a solution to the experts later.

 

The feasible solution is as follows:

The struts2 configuration is as follows:

 

          
 
  
   
    
     
      
      
     
    
   
  
  
   
    
     Nologin
    
   
  
 

        
 
  
// Note that the above package name is inherited
  
   Message
  
 

The JS Code is as follows:

 

 

Function focusInsert (detailid, liketype) {var uid = document. getElementById (idaaa). value; // alert (uid); if (confirm (Are you sure you want to follow this information ?)) {$. Post (insertfocus. action, // you can change the name of the following parameter to {mfocus. uid: uid, mfocus. detailid: detailid, mfocus. liketype: liketype}, function (result) {if (result = null) {alert ('System error'); return false;} else if (result. nologin) {alert (you have not logged on. Please log on and continue to operate ...);} else {alert (followed successfully); location. reload () ;}, 'json ');}}

 

The. java class of the interceptor is as follows:

 

Package nwsuaf. intercept; import javax. servlet. http. httpServletResponse; import org. apache. struts2.ServletActionContext; import nwsuaf. bean. loginBean; import com. opensymphony. xwork2.Action; import com. opensymphony. xwork2.ActionContext; import com. opensymphony. xwork2.ActionInvocation; import com. opensymphony. xwork2.interceptor. abstractInterceptor; public class MethodInterceptor extends actintercepto R {/*** interceptor */private static final long serialVersionUID = 1L; @ Overridepublic String intercept (ActionInvocation invocation) throws Exception {// TODO Auto-generated method stubSystem. out. println (the interceptor works !); LoginBean u = (LoginBean) ActionContext. getContext (). getSession (). get (loginedUser); if (u! = Null) {System. out. println (interceptor u! = Null: + u); return invocation. invoke ();} System. out. println (interceptor u = null: + u); // HttpServletResponse response = ServletActionContext. getResponse (); // response. getWriter (). println ({olgoin: true}); return nologin ;}}

 

The action class is as follows:

 

public class FocusAction extends BaseAction {   

// The method in action does not need to be changed. You only need to add a flag field. Note that the set method must be private boolean nologin = true;

 

Global Interceptor:

 

 
  
   
    
     
      
      
     
    
   
  
  
   
    
     
/EC/user/userLogin. jsp
       
   
  
 // The difference between this and above is that all the interceptors that need to be implemented only need to inherit the "myPackage" package.

 

 

 

public class LoginInterceptor extends AbstractInterceptor{@Overridepublic String intercept(ActionInvocation arg0) throws Exception {Map session=arg0.getInvocationContext().getSession();User user=(User)session.get(user);System.out.println(user);if(user!=null){return arg0.invoke();}elsereturn Action.LOGIN;}}