Xmpp 使用Smack加载vCard信息时出错：“0”；EmptyResultIQ不能强制转换为org.jivesoftware.smackx.vcardtemp.packet.VCard“；_Xmpp_Ejabberd_Smack_Vcf Vcard

Xmpp 使用Smack加载vCard信息时出错：“0”；EmptyResultIQ不能强制转换为org.jivesoftware.smackx.vcardtemp.packet.VCard“；

xmpp

Xmpp 使用Smack加载vCard信息时出错：“0”；EmptyResultIQ不能强制转换为org.jivesoftware.smackx.vcardtemp.packet.VCard“；,xmpp,ejabberd,smack,vcf-vcard,Xmpp,Ejabberd,Smack,Vcf Vcard,我正在使用smack 4.1.1创建一个android聊天应用程序我可以在本地测试服务器（Openfire）上加载用户vcard 但现在，在ejabberd服务器上，当我尝试加载vcard时，出现以下错误： 07-19 11:11:26.175: E/AndroidRuntime(13849): java.lang.RuntimeException: An error occured while executing doInBackground() 07-19 11:11:26.175: E/

我正在使用smack 4.1.1创建一个android聊天应用程序

我可以在本地测试服务器（Openfire）上加载用户vcard

但现在，在ejabberd服务器上，当我尝试加载vcard时，出现以下错误：

07-19 11:11:26.175: E/AndroidRuntime(13849): java.lang.RuntimeException: An error occured while executing doInBackground()
07-19 11:11:26.175: E/AndroidRuntime(13849):    at android.os.AsyncTask$3.done(AsyncTask.java:300)
07-19 11:11:26.175: E/AndroidRuntime(13849):    at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
07-19 11:11:26.175: E/AndroidRuntime(13849):    at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
07-19 11:11:26.175: E/AndroidRuntime(13849):    at java.util.concurrent.FutureTask.run(FutureTask.java:242)
07-19 11:11:26.175: E/AndroidRuntime(13849):    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
07-19 11:11:26.175: E/AndroidRuntime(13849):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
07-19 11:11:26.175: E/AndroidRuntime(13849):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
07-19 11:11:26.175: E/AndroidRuntime(13849):    at java.lang.Thread.run(Thread.java:818)
07-19 11:11:26.175: E/AndroidRuntime(13849): Caused by: java.lang.ClassCastException: org.jivesoftware.smack.packet.EmptyResultIQ cannot be cast to org.jivesoftware.smackx.vcardtemp.packet.VCard
07-19 11:11:26.175: E/AndroidRuntime(13849):    at org.jivesoftware.smackx.vcardtemp.VCardManager.loadVCard(VCardManager.java:125)
07-19 11:11:26.175: E/AndroidRuntime(13849):    at service.ChatService$Connect.doInBackground(ChatService.java:331)
07-19 11:11:26.175: E/AndroidRuntime(13849):    at service.ChatService$Connect.doInBackground(ChatService.java:1)
07-19 11:11:26.175: E/AndroidRuntime(13849):    at android.os.AsyncTask$2.call(AsyncTask.java:288)
07-19 11:11:26.175: E/AndroidRuntime(13849):    at java.util.concurrent.FutureTask.run(FutureTask.java:237)

这一行：

org.jivesoftware.smack.packet.EmptyResultIQ cannot be cast to org.jivesoftware.smackx.vcardtemp.packet.VCard

这是我获得vcard的方式：

VCard info;
    for (RosterEntry entry : entries) {
        Presence entryPresence = roster.getPresence(entry.getUser());
        Presence.Type type = entryPresence.getType();
        Log.d(entry.getUser(), "bar jid");
        if(entry.getUser().lastIndexOf("@") == -1)
            continue;
        String username = entry.getUser().substring(0,
                entry.getUser().lastIndexOf("@"));      
        try {
            info = VCardManager.getInstanceFor(connection).loadVCard(entry.getUser());
            if(info.getMiddleName() != null)
            {

                uh.updateAvatar(username, info.getMiddleName());
            }
        } catch (NoResponseException | XMPPErrorException
                | NotConnectedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        }
    }

logcat提到这一行是问题的根源：

        info = VCardManager.getInstanceFor(connection).loadVCard(entry.getUser());

这就是我在坠机前得到的信息：

07-19 12:38:06.030: D/SMACK(16307): SENT (0): <stream:stream xmlns='jabber:client' to='myserver.com' xmlns:stream='http://etherx.jabber.org/streams' version='1.0' xml:lang='en'>
07-19 12:38:06.665: D/SMACK(16307): RECV (0): <?xml version='1.0'?><stream:stream xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' id='184908447' from='myserver.com' version='1.0' xml:lang='en'><stream:features><starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/><compression xmlns='http://jabber.org/features/compress'><method>zlib</method></compression><mechanisms xmlns='urn:ietf:params:xml:ns:xmpp-sasl'><mechanism>PLAIN</mechanism><mechanism>DIGEST-MD5</mechanism><mechanism>SCRAM-SHA-1</mechanism></mechanisms><c xmlns='http://jabber.org/protocol/caps' hash='sha-1' node='http://www.process-one.net/en/ejabberd/' ver='wwrSvLFOLzC92POh074kJuEqYxE='/><register xmlns='http://jabber.org/features/iq-register'/></stream:features>
07-19 12:38:06.665: D/SMACK(16307): SENT (0): <auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='PLAIN'>AG1laGRpMTIzADEyMzQ=</auth>
07-19 12:38:07.390: D/SMACK(16307): RECV (0): <success xmlns='urn:ietf:params:xml:ns:xmpp-sasl'/>
07-19 12:38:07.390: D/SMACK(16307): SENT (0): <stream:stream xmlns='jabber:client' to='myserver.com' xmlns:stream='http://etherx.jabber.org/streams' version='1.0' id='184908447' xml:lang='en'>
07-19 12:38:08.005: D/SMACK(16307): RECV (0): <?xml version='1.0'?><stream:stream xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' id='1619836774' from='myserver.com' version='1.0' xml:lang='en'><stream:features><bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'/><session xmlns='urn:ietf:params:xml:ns:xmpp-session'/><c xmlns='http://jabber.org/protocol/caps' hash='sha-1' node='http://www.process-one.net/en/ejabberd/' ver='wwrSvLFOLzC92POh074kJuEqYxE='/><register xmlns='http://jabber.org/features/iq-register'/></stream:features>
07-19 12:38:08.005: D/SMACK(16307): SENT (0): <iq id='VSflA-4' type='set'><bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'><resource>roo</resource></bind></iq>
07-19 12:38:08.725: D/SMACK(16307): RECV (0): <iq id='VSflA-4' type='result'><bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'><jid>mehdi123@myserver.com/roo</jid></bind></iq>
07-19 12:38:08.725: D/SMACK(16307): SENT (0): <iq id='VSflA-6' type='set'><session xmlns='urn:ietf:params:xml:ns:xmpp-session'/></iq>
07-19 12:38:09.245: D/SMACK(16307): RECV (0): <iq type='result' id='VSflA-6'><session xmlns='urn:ietf:params:xml:ns:xmpp-session'/></iq>
07-19 12:38:09.245: D/SMACK(16307): User logged (0): mehdi123@myserver.com:5222/roo
07-19 12:38:09.245: D/received from authenticated service(16307): connected: true
07-19 12:38:09.245: D/SMACK(16307): SENT (0): <iq id='VSflA-8' type='get'><query xmlns='jabber:iq:roster'></query></iq>
07-19 12:38:09.245: D/SMACK(16307): SENT (0): <iq id='VSflA-9' type='get'><vCard xmlns='vcard-temp'/></iq>
07-19 12:38:09.860: D/SMACK(16307): RECV (0): <iq from='mehdi123@myserver.com' to='mehdi123@myserver.com/roo' id='VSflA-9' type='result'><vCard xmlns='vcard-temp'><N><FAMILY/><GIVEN>gigi</GIVEN><MIDDLE>http://31.170.166.15/avatars/mehdi123.jpg</MIDDLE></N><FN>gigi http://31.170.166.15/avatars/mehdi123.jpg </FN><NICKNAME>gigi </NICKNAME><EMAIL><HOME/><INTERNET/><PREF/><USERID>iyi</USERID></EMAIL><TEL><HOME/><CELL/><NUMBER>hfu</NUMBER></TEL><ADR><HOME/><CTRY/><LOCALITY/><REGION/></ADR></vCard></iq><iq from='mehdi123@myserver.com' to='mehdi123@myserver.com/roo' id='VSflA-8' type='result'><query xmlns='jabber:iq:roster'><item subscription='from' jid='jafar123@myserver.com'/></query></iq>
07-19 12:38:09.860: D/http://31.170.166.15/avatars/mehdi123.jpg(16307): http://31.170.166.15/avatars/mehdi123.jpg from chatservice
07-19 12:38:09.865: D/SMACK(16307): XMPPConnection authenticated (0)
07-19 12:38:09.865: I/XMPPChatDemoActivity(16307): connected & logged in
07-19 12:38:09.865: D/SMACK(16307): SENT (0): <presence id='VSflA-12'><c xmlns='http://jabber.org/protocol/caps' hash='sha-1' node='http://www.igniterealtime.org/projects/smack' ver='os2Kusj3WEOivn5n4iFr/ZEO8ls='/></presence>
07-19 12:38:09.875: D/SMACK(16307): SENT (0): <presence to='iran@conference.myserver.com/mehdi123' id='VSflA-13'><x xmlns='http://jabber.org/protocol/muc'><password></password><history maxstanzas='0'/></x><c xmlns='http://jabber.org/protocol/caps' hash='sha-1' node='http://www.igniterealtime.org/projects/smack' ver='os2Kusj3WEOivn5n4iFr/ZEO8ls='/></presence>
07-19 12:38:10.575: D/SMACK(16307): RECV (0): <presence from='mehdi123@myserver.com/roo' to='mehdi123@myserver.com/roo' xml:lang='en' id='VSflA-12'><c xmlns='http://jabber.org/protocol/caps' hash='sha-1' node='http://www.igniterealtime.org/projects/smack' ver='os2Kusj3WEOivn5n4iFr/ZEO8ls='/></presence>
07-19 12:38:11.310: D/SMACK(16307): RECV (0): <message from='iran@conference.myserver.com' to='mehdi123@myserver.com/roo' type='groupchat'><body>This room is not anonymous</body><x xmlns='http://jabber.org/protocol/muc#user'><status code='100'/></x></message><message from='iran@conference.myserver.com' to='mehdi123@myserver.com/roo' type='groupchat'><body>This room is filtered by external service</body><x xmlns='http://jabber.org/protocol/muc#user'><status code='100'/></x></message><presence from='iran@conference.myserver.com/boy' to='mehdi123@myserver.com/roo' xml:lang='En' ver='2.3.1'><show>dnd</show><status>iN niZ BoGZaRaD ツ</status><c xmlns='http://jabber.org/protocol/caps' node='http://kopete.kde.org/jabber/capshttp://kopete.kde.org/jabber/caps' ver='xzah7XZzG6oCHvM2nNnG2hHNOBM=' hash='sha-1'/><x xmlns='http://jabber.org/protocol/muc#user'><item jid='boy@myserver.com/SaM' affiliation='member' role='participant'/></x></presence><presence from='iran@conference.myserver.com/jafar123' to='mehdi123@myserver.com/roo' id='BYLNs-85'><x xmlns='http://jabber.org/protocol/muc#user'><item jid='jafar123@myserver.com/Spark 2.6.3' affiliation='admin' role='moderator'/></x></presence>
07-19 12:38:11.895: D/SMACK(16307): RECV (0): <presence from='iran@conference.myserver.com/mehdi123' to='mehdi123@myserver.com/roo' xml:lang='en' id='VSflA-13'><c xmlns='http://jabber.org/protocol/caps' hash='sha-1' node='http://www.igniterealtime.org/projects/smack' ver='os2Kusj3WEOivn5n4iFr/ZEO8ls='/><x xmlns='http://jabber.org/protocol/muc#user'><item jid='mehdi123@myserver.com/roo' affiliation='admin' role='moderator'/><status code='110'/><status code='100'/></x></presence><message from='iran@conference.myserver.com' to='mehdi123@myserver.com/roo' type='groupchat'><subject>be dalile barkhi masael va tamirat server named off mishe ta zamani ke barname  android kamel nashe on nemikonam ,  momkene yemah domah ya chand mah zaman bebare</subject><body>mahan has set the subject to: be dalile barkhi masael va tamirat server named off mishe ta zamani ke barname  android kamel nashe on nemikonam ,  momkene yemah domah ya chand mah zaman bebare</body></message>
07-19 12:38:11.895: D/SMACK(16307): SENT (0): <presence to='321@conference.myserver.com/mehdi123' id='VSflA-21'><x xmlns='http://jabber.org/protocol/muc'><password></password><history maxstanzas='0'/></x><c xmlns='http://jabber.org/protocol/caps' hash='sha-1' node='http://www.igniterealtime.org/projects/smack' ver='os2Kusj3WEOivn5n4iFr/ZEO8ls='/></presence>
07-19 12:38:14.790: D/SMACK(16307): RECV (0): <presence from='321@conference.myserver.com/mehdi123' to='mehdi123@myserver.com/roo' xml:lang='en' id='VSflA-21'><c xmlns='http://jabber.org/protocol/caps' hash='sha-1' node='http://www.igniterealtime.org/projects/smack' ver='os2Kusj3WEOivn5n4iFr/ZEO8ls='/><x xmlns='http://jabber.org/protocol/muc#user'><item jid='mehdi123@myserver.com/roo' affiliation='owner' role='moderator'/><status code='110'/><status code='201'/></x></presence>
07-19 12:38:14.790: D/jafar123@myserver.com(16307): bar jid
07-19 12:38:14.790: D/SMACK(16307): SENT (0): <presence id='VSflA-23'><c xmlns='http://jabber.org/protocol/caps' hash='sha-1' node='http://www.igniterealtime.org/projects/smack' ver='os2Kusj3WEOivn5n4iFr/ZEO8ls='/></presence>
07-19 12:38:14.795: D/SMACK(16307): SENT (0): <iq to='jafar123@myserver.com' id='VSflA-26' type='get'><vCard xmlns='vcard-temp'/></iq>
07-19 12:38:15.435: D/SMACK(16307): RECV (0): <presence from='mehdi123@myserver.com/roo' to='mehdi123@myserver.com/roo' xml:lang='en' id='VSflA-23'><c xmlns='http://jabber.org/protocol/caps' hash='sha-1' node='http://www.igniterealtime.org/projects/smack' ver='os2Kusj3WEOivn5n4iFr/ZEO8ls='/></presence>
07-19 12:38:16.040: D/SMACK(16307): RECV (0): <iq from='jafar123@myserver.com' to='mehdi123@myserver.com/roo' id='VSflA-26' type='result'/>

07-19 12:38:06.030:D/SMACK（16307）：发送（0）：
7-19 12:38:06.665:D/SMACK（16307）：RECV（0）：ZLIB-MD5紧急停堆-SHA-1
7-19 12:38:06.665:D/SMACK（16307）：发送（0）：AG1laGRpMTIzADEyMzQ=
7-19 12:38:07.390:D/SMACK（16307）：RECV（0）：
07-19 12:38:07.390:D/SMACK（16307）：已发送（0）：
07-19 12:38:08.005:D/SMACK（16307）：RECV（0）：
07-19 12:38:08.005:D/SMACK（16307）：发送（0）：roo
7-19 12:38:08.725:D/SMACK（16307）：RECV（0）：mehdi123@myserver.com/袋鼠
7-19 12:38:08.725:D/SMACK（16307）：已发送（0）：
7-19 12:38:09.245:D/SMACK（16307）：RECV（0）：
07-19 12:38:09.245:D/SMACK（16307）：用户登录（0）：mehdi123@myserver.com：5222/roo
07-19 12:38:09.245:D/从认证服务（16307）接收：已连接：真
7-19 12:38:09.245:D/SMACK（16307）：发送（0）：
7-19 12:38:09.245:D/SMACK（16307）：发送（0）：
7-19 12:38:09.860:D/SMACK（16307）：RECV（0）：gigihttp://31.170.166.15/avatars/mehdi123.jpggigi http://31.170.166.15/avatars/mehdi123.jpg 吉吉伊夫
07-19 12:38:09.860:D/http://31.170.166.15/avatars/mehdi123.jpg(16307): http://31.170.166.15/avatars/mehdi123.jpg 来自聊天室
07-19 12:38:09.865:D/SMACK（16307）：XMPPConnection已验证（0）
07-19 12:38:09.865:I/XMPPChatDemoActivity（16307）：已连接并已登录
7-19 12:38:09.865:D/SMACK（16307）：已发送（0）：
07-19 12:38:09.875:D/SMACK（16307）：已发送（0）：
7-19 12:38:10.575:D/SMACK（16307）：RECV（0）：
7-19 12:38:11.310:D/SMACK（16307）：RECV（0）：此房间不匿名此房间由niZ BoGZaRaD的外部服务进行过滤ツ
7-19 12:38:11.895:D/SMACK（16307）：RECV（0）：Dalie barkhi masael va tamirat服务器命名为mishe ta zamani ke barname android kamel nashe在nemikonam，momkene yemah domah ya chand mah zaman bebaremahan将主题设定为：Dalie barkhi masael va tamirat服务器在nemikonam的mishe ta zamani ke barname android kamel nashe命名，momkene yemah domah ya chand mah zaman bebare
07-19 12:38:11.895:D/SMACK（16307）：发送（0）：
7-19 12:38:14.790:D/SMACK（16307）：RECV（0）：
07-19 12:38:14.790:D/jafar123@myserver.com（16307）：巴吉德
7-19 12:38:14.790:D/SMACK（16307）：发送（0）：
7-19 12:38:14.795:D/SMACK（16307）：已发送（0）：
7-19 12:38:15.435:D/SMACK（16307）：RECV（0）：
7-19 12:38:16.040:D/SMACK（16307）：RECV（0）：

我实际上在另一个问题中写到了这个问题。我希望我不是一个野蛮人，在这里重新发布修复程序：

您可能面临的问题是JID的后缀。getUser（）方法将JID返回为user@example.com/啪。要获取vCard详细信息，您需要按以下方式查询它：user@example.com（没有打耳光）。尝试一下，并告诉我它是否有效。

发送：
SENT: <iq to='jafar123@myserver.com' id='VSflA-26' type='get'><vCard xmlns='vcard-temp'/></iq>
RECV: <iq from='jafar123@myserver.com' to='mehdi123@myserver.com/roo' id='VSflA-26' type='result'/>

记录：

这似乎是服务器实现中的一个bug。XEP-54§3.2明确指出，vcard get的结果必须为

有效的vcard结果

错误智商

如果不存在vCard或用户不存在，服务器必须返回一节错误

这里的服务器返回一个空的IQ结果

我建议将此情况报告给服务器开发人员。

跟踪将有助于诊断问题。请看，我在崩溃之前放置了smack调试。当它关闭时，一切正常。但是为什么？我不认为TLS是相关的。你可能推断出不存在的因果关系。是的，我已经读过了，老实说，这是正确的答案！我与服务器所有者交谈，问他是否以某种方式禁用了获取vcard，他说：我不确定，但我认为服务器上的某些安全措施阻止普通用户获取vcard。他还说，出于安全原因，我们需要有这样一个东西，因为有些人在滥用……说得好，尤达，说得好。但那不是我的问题。我会记住你的解决方案，因为它可能在将来的某个地方发生：D