我正在尝试将Pubsub模块用于我的应用程序，现在我正在尝试运行一些发布/订阅测试，到目前为止没有结果。
在服务器端，我使用安装了pubsub的ejabberd 2.1.11（或者至少看起来像是这样）
mod_pubsub_odbc: [{access_createnode, pubsub_createnode},
{pep_sendlast_offline, false},
{last_item_cache, false},
{plugins, ["flat", "hometree", "pep"]}]
在客户端，我已经能够创建节点，但我无法订阅它们。这是我的代码
XMPPConnection mycon = new XMPPTCPConnection(connectionConfiguration);
mycon.connect();
mycon.login("phantom_notifier", "phantom_notifier");
PubSubManager mgr = new PubSubManager(mycon);
LeafNode leaf = mgr.getNode("testNode2");
leaf.addItemEventListener(new ItemEventListener()
{
@Override
public void handlePublishedItems(ItemPublishEvent items) {
//TODO
}
});
leaf.subscribe(mycon.getUser());
运行此代码后，我总是得到以下异常
java.io.EOFException: no more data available - expected end tag </stream:stream> to close start tag <stream:stream> from line 1, parser stopped on END_TAG seen ...</x></query></iq>... @1:3734
at org.xmlpull.mxp1.MXParser.fillBuf(MXParser.java:3035)
at org.xmlpull.mxp1.MXParser.more(MXParser.java:3046)
at org.xmlpull.mxp1.MXParser.nextImpl(MXParser.java:1144)
at org.xmlpull.mxp1.MXParser.next(MXParser.java:1093)
at org.jivesoftware.smack.tcp.PacketReader.parsePackets(PacketReader.java:279)
at org.jivesoftware.smack.tcp.PacketReader.access$000(PacketReader.java:47)
at org.jivesoftware.smack.tcp.PacketReader$1.run(PacketReader.java:81)
org.jivesoftware.smack.SmackException$NoResponseException
at org.jivesoftware.smack.PacketCollector.nextResultOrThrow(PacketCollector.java:191)
at org.jivesoftware.smack.PacketCollector.nextResultOrThrow(PacketCollector.java:175)
at org.jivesoftware.smackx.pubsub.PubSubManager.sendPubsubPacket(PubSubManager.java:303)
at org.jivesoftware.smackx.pubsub.Node.sendPubsubPacket(Node.java:443)
at org.jivesoftware.smackx.pubsub.Node.subscribe(Node.java:248)
at main.DBChangesReceiver.main(DBChangesReceiver.java:115)
无论我订阅哪个节点......
另一方面，每当我尝试发布消息时，我都没有收到任何错误但是检查日志我发现我的消息不对。我用来发布消息的代码如下
leaf.publish(new PayloadItem<SimplePayload>("test" + System.currentTimeMillis(),
new SimplePayload("book", "pubsub:test:book",
"test book")));
在调试器中，我上次发送和接收的消息如下：
已发送消息
<iq id="BT97r-10" to="pubsub.myserver" type="set">
<pubsub xmlns="http://jabber.org/protocol/pubsub">
<publish node="testNode2">
<item id="test1413022577642">test book</item>
</publish>
</pubsub>
收到消息
<iq id="BT97r-10" to="phantom_notifier@myserver/Smack" from="pubsub.myserver" type="error">
<pubsub xmlns="http://jabber.org/protocol/pubsub">
<publish xmlns="http://jabber.org/protocol/pubsub">
<item>test book</item>
</publish>
</pubsub>
<error type="modify">
<bad-request xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/>
<invalid-payload xmlns="http://jabber.org/protocol/pubsub#errors"/>
</error>
</iq>
现在我对这个无效的有效载荷一无所知，在互联网上查看文档我看不出有什么大的差别。
编辑
在@Flow建议之后，发送到服务器的包是：
<iq id="XIaTx-11" to="pubsub.myserver" type="set">
<pubsub xmlns="http://jabber.org/protocol/pubsub">
<publish node="testNode2">
<item id="test1413099855673">
<book xmlns="pubsub:test:book">text book</book>
</item>
</publish>
</pubsub>
</iq>
服务器不会发送响应，因为它似乎存在一些严重错误（与我尝试订阅时相同的注释）：
oct 12, 2014 9:44:15 AM org.jivesoftware.smack.XMPPConnection callConnectionClosedOnErrorListener
Connection closed with error
java.io.EOFException: no more data available - expected end tag </stream:stream> to close start tag <stream:stream> from line 1, parser stopped on END_TAG seen ...</x></query></iq>... @1:3625
at org.xmlpull.mxp1.MXParser.fillBuf(MXParser.java:3035)
at org.xmlpull.mxp1.MXParser.more(MXParser.java:3046)
at org.xmlpull.mxp1.MXParser.nextImpl(MXParser.java:1144)
at org.xmlpull.mxp1.MXParser.next(MXParser.java:1093)
at org.jivesoftware.smack.tcp.PacketReader.parsePackets(PacketReader.java:279)
at org.jivesoftware.smack.tcp.PacketReader.access$000(PacketReader.java:47)
at org.jivesoftware.smack.tcp.PacketReader$1.run(PacketReader.java:81)
这里我有ejabberd错误日志（希望它很有用）
=ERROR REPORT==== 2014-10-12 09:45:38 ===
** State machine <0.4880.3> terminating
** Last message in was {route,
{jid,[],"pubsub.myserver",[],[],
"pubsub.myserver",[]},
{jid,"phantom_notifier","myserver","Smack",
"phantom_notifier","myserver","Smack"},
{xmlelement,"iq",
[{"type","error"},
{"from","pubsub.myserver"},
{"id","XIaTx-11"}],
[{xmlelement,"pubsub",
[{"xmlns","http://jabber.org/protocol/pubsub"}],
[{xmlelement,"publish",
[{"node","testNode2"}],
[{xmlelement,"item",
[{"id","test1413099855673"}],
[{xmlelement,"book",
[{"xmlns","pubsub:test:book"}],
[{xmlcdata,<<"text book">>}]}]}]}]},
{aborted,no_transaction}]}}
** When State == session_established
** Data == {state,
{socket_state,gen_tcp,#Port<0.218148>,<0.4879.3>},
ejabberd_socket,#Ref<0.0.12.23022>,false,"2115632325",
{sasl_state,"jabber","myserver",[],
#Fun<ejabberd_c2s.1.30334249>,
#Fun<ejabberd_c2s.2.32721014>,
#Fun<ejabberd_c2s.3.7052687>,cyrsasl_digest,
{state,5,"3654209317","phantom_notifier",[],
#Fun<ejabberd_c2s.1.30334249>,
#Fun<ejabberd_c2s.3.7052687>,
ejabberd_auth_internal,"myserver"}},
c2s,c2s_shaper,false,true,false,false,
[verify_none,{certfile,"/etc/ejabberd/ejabberd.pem"}],
true,
{jid,"phantom_notifier","myserver","Smack",
"phantom_notifier","myserver","Smack"},
"phantom_notifier","myserver5","Smack",
{{1413,99937,977476},<0.4880.3>},
{pres_t,1},
{pres_f,1},
{pres_a,1},
{pres_i,0},
{xmlelement,"presence",
[{"id","XIaTx-9"}],
[{xmlelement,"status",[],
[{xmlcdata,<<"Phantom on the phone">>}]},
{xmlelement,"priority",[],[{xmlcdata,<<"42">>}]}]},
undefined,
{{2014,10,12},{7,45,37}},
false,
{userlist,none,[],false},
c2s,ejabberd_auth_internal,
{{84,125,131,61},56127},
[]}
** Reason for termination =
** {{badxml,
{xmlelement,"iq",
[{"from","pubsub.myserver"},
{"to","phantom_notifier@myserver/Smack"},
{"type","error"},
{"id","XIaTx-11"}],
[{xmlelement,"pubsub",
[{"xmlns","http://jabber.org/protocol/pubsub"}],
[{xmlelement,"publish",
[{"node","testNode2"}],
[{xmlelement,"item",
[{"id","test1413099855673"}],
[{xmlelement,"book",
[{"xmlns","pubsub:test:book"}],
[{xmlcdata,<<"text book">>}]}]}]}]},
{aborted,no_transaction}]},
{{case_clause,{aborted,no_transaction}},
[{xml,element_to_string_nocatch,1},
{xml,'-element_to_string_nocatch/1-lc$^0/1-0-',1},
{xml,'-element_to_string_nocatch/1-lc$^0/1-0-',1},
{xml,element_to_string_nocatch,1},
{xml,element_to_string,1},
{xml,element_to_binary,1},
{ejabberd_c2s,send_element,2},
{ejabberd_c2s,handle_info,3}]}},
[{xml,element_to_string,1},
{xml,element_to_binary,1},
{ejabberd_c2s,send_element,2},
{ejabberd_c2s,handle_info,3},
{p1_fsm,handle_msg,10},
{proc_lib,init_p_do_apply,3}]}
我们可以看到的错误与客户端中给出的错误有关，这是一个构造错误的xml元素。
答案 0 :(得分：3)
我认为问题是item只有文本而没有封闭的XML元素。对于Smack的SimplePayload课来说，这是一个不幸的设计问题。基本上你想要替换
"test book"
与
"<book xmlns='pubsub:test:book'>text book</book>"
构造SimplePayload
时