【发布时间】：2014-10-31 07:37:59
【问题描述】：
我正在尝试从 App Server(TOMCAT) 创建多用户聊天组，我在 servlet 中创建了一个 XMPP 机器人。
根据我的要求，我必须从应用服务器创建一个多用户聊天组（在应用服务器上使用 xmpp bot），并从 android 应用加入用户。
创建多用户聊天组并从 Android 加入用户（使用 aSmack）工作得很好，当我尝试在 appServer（TOMCAT）上做同样的事情时，我收到错误，
起初，当我尝试创建 MUC 时，我收到“无法使用 Android 的 aSmack 库创建多用户聊天 (MUC) 房间：”packet.DefaultPacketExtension 无法转换为 packet.MUCUser”，
当我在 SO 上搜索时，我发现 POST @FLOW 提到了这个错误的原因
org.jivesoftware.smack.packet.DefaultPacketExtension 不能转换为 org.jivesoftware.smackx.packet.MUCUser 通常是一个指示符 您没有初始化负责处理的 aSmack 的静态代码 为各种数据包（和数据包）注册 Smack 提供程序 扩展）类的 Smack。 对于大多数 aSmack 版本，只需调用
SmackAndroid.init(Context ctx)
会成功的。
核心 Smack 包中没有这样的方法，它负责为 Smack 的各种数据包（和数据包扩展）类注册 Smack 提供程序。
所以我在这个 link 上使用 configure(ProviderManager pm) 方法手动配置提供
现在配置提供程序后，一切都应该可以正常工作，但我仍然无法创建 MUC 组
我的代码如下
SmackConfiguration.setPacketReplyTimeout(packetReplyTimeout);
if(service != null)
config = new ConnectionConfiguration(server, port, service);
else
config = new ConnectionConfiguration(server, port);
config.setSASLAuthenticationEnabled(true);
config.setSecurityMode(SecurityMode.disabled);
config.setDebuggerEnabled(true);
connection = new XMPPConnection(config);
connection.connect();
System.out.println("Connected: " + connection.isConnected());
chatManager = connection.getChatManager();
messageListener = new MyMessageListener();
if (connection!=null && connection.isConnected()) {
configure(ProviderManager.getInstance());
connection.login(username, password);
}
MultiUserChat muc = new MultiUserChat(connection, "1234567@conference.localhost");
muc.create("Jonny");
Form form = muc.getConfigurationForm();
Form submitForm = form.createAnswerForm();
for (Iterator<FormField> fields = form.getFields(); fields.hasNext();) {
FormField field = (FormField) fields.next();
if (!FormField.TYPE_HIDDEN.equals(field.getType())
&& field.getVariable() != null) {
// show("field: " + field.getVariable());
// Sets the default value as the answer
submitForm.setDefaultAnswer(field.getVariable());
}
}
List<String> owners = new ArrayList<String>();
owners.add(xmppManager.getXmppConnection().getUser());
submitForm.setAnswer("muc#roomconfig_roomowners", owners);
//submitForm.setAnswer("muc#roomconfig_roomname", );
submitForm.setAnswer("muc#roomconfig_persistentroom", true);
muc.sendConfigurationForm(submitForm);
muc.join(MucNick);
muc.sendMessage("hello everybody");
muc.addMessageListener(
new PacketListener() {
@Override
public void processPacket(Packet packet) {
message = (Message) packet;
if (message.getBody() != null) {
String fromName = StringUtils.parseBareAddress(message
.getFrom());
System.out.println("andro xmpp client"+ "Text Recieved--" + message.getBody()
+ " from " + fromName );
//messages.add(fromName + ":");
//messages.add(message.getBody());
//infobox.append("message arrieved "+" from::"+message.getFrom()+"__"+message.getBody());
// Add the incoming message to the list view
//Log.i("andro xmpp client","group messages__"+ messages.toString());
}
}
}
);
这里是堆栈跟踪::
Exception in thread "Smack Packet Reader (0)" java.lang.NoSuchMethodError: org.jivesoftware.smack.util.StringUtils.parseDate(Ljava/lang/String;)Ljava/util/Date;
at org.jivesoftware.smackx.provider.DelayInformationProvider.parseExtension(DelayInformationProvider.java:45)
at org.jivesoftware.smack.util.PacketParserUtils.parsePacketExtension(PacketParserUtils.java:768)
at org.jivesoftware.smack.util.PacketParserUtils.parsePresence(PacketParserUtils.java:248)
at org.jivesoftware.smack.PacketReader.parsePackets(PacketReader.java:232)
at org.jivesoftware.smack.PacketReader.access$000(PacketReader.java:43)
at org.jivesoftware.smack.PacketReader$1.run(PacketReader.java:70)
No response from server.:
at org.jivesoftware.smackx.muc.MultiUserChat.create(MultiUserChat.java:367)
at com.sentiinel.egovern.testcase1.testing2.createMUC(testing2.java:510)
at com.sentiinel.egovern.testcase1.testing2.insertRequest(testing2.java:303)
at com.sentiinel.egovern.testcase1.testing2.doPost(testing2.java:133)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at com.sentiinel.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:115)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
对上述问题的任何帮助都会非常有帮助
提前致谢！！！
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