why this happen?

[Migrated From Jforum.net]

one user repeat several times in the online user list.
Why this happen ?

[originally posted on jforum.net by lynx286]

[Migrated From Jforum.net]

and when I refresh again and again, it became more and more online users. the same user repeat lots of times.
[originally posted on jforum.net by lynx286]

[Migrated From Jforum.net]

I resolved this issue by myself. :lol:

In ForumAction.java , add this line: removeDuplicate(onlineUsersList);
before: this.context.put("userSessions", onlineUsersList);

add a function:

public static void removeDuplicate(List list) {   
        for (int i = 0; i < list.size() - 1; i++) {   
            for (int j = list.size() - 1; j > i; j--) {   
                String jName = ((UserSession) list.get(j)).getUsername();   
                String iName = ((UserSession) list.get(i)).getUsername();   
                if (jName.equals(iName)) {   
                    list.remove(j);   
                }   
            }   
        }   
        // System.out.println(list);   
    }  

http://www.mydwbi.com/posts/list/103.page
For your reference.
[originally posted on jforum.net by lynx286]