Smack API 抛出 item-not-found(404) 异常

Posted 2023-02-24

【中文标题】Smack API 抛出 item-not-found(404) 异常

【英文标题】：Smack API throws item-not-found(404) exception

【发布时间】：2016-05-31 18:40:06

【问题描述】：

这里是代码

Iterator i = MultiUserChat.getJoinedRooms(connectionManager.getXMPPConnection(), "test123@dulanjaya-pc");
while(i.hasNext()) 
    System.out.println(i.next());

【问题讨论】：

发现问题；该代码不包含main(String[]) 方法。此外，connectionManager 永远不会被初始化，并且它们都不包含在类中。

好吧。 connectionManager 已初始化。代码中没有提到

【参考方案1】：

想通了。 需要把服务作为/Smack

Iterator i = MultiUserChat.getJoinedRooms(connectionManager.getXMPPConnection(), "test123@dulanjaya-pc/Smack");

【参考方案2】：

也许这段代码 sn-p 对你有帮助。

boolean supports = MultiUserChat.isServiceEnabled(connection,"test3@pc2010102716/spark");    
if(supports)    
                Iterator<String> joinedRooms = MultiUserChat.getJoinedRooms(connection,"test3@pc2010102716/spark");  
                while(joinedRooms.hasNext())    
                    System.out.println("test3 has joined Room " + joinedRooms.next());   
                   
            

【参考方案3】：

getJoinedRooms 的源代码如下所示，告诉我们该方法的第二个参数需要一个完全限定的 xmpp ID。它显示的 ID 示例不完整，完整的 ID 应包含资源名称，例如 /smack、/spark 和 /android。

 /**
     * Returns an Iterator on the rooms where the requested user has joined. The Iterator will
     * contain Strings where each String represents a room (e.g. [e-mail]).
     *
     * @param connection the connection to use to perform the service discovery.
     * @param user the user to check. A fully qualified xmpp ID, e.g. [e-mail].
     * @return an Iterator on the rooms where the requested user has joined.
     */
    public static Iterator<String> getJoinedRooms(Connection connection, String user) 
        try 
            ArrayList<String> answer = new ArrayList<String>();
            // Send the disco packet to the user
            DiscoverItems result =
                ServiceDiscoveryManager.getInstanceFor(connection).discoverItems(user, discoNode);
            // Collect the entityID for each returned item
            for (Iterator<DiscoverItems.Item> items=result.getItems(); items.hasNext();) 
                answer.add(items.next().getEntityID());
            
            return answer.iterator();
        
        catch (XMPPException e) 
            e.printStackTrace();
            // Return an iterator on an empty collection
            return new ArrayList<String>().iterator();