在连接中关联如下:
// iq提供者 ProviderManager.getInstance().addIQProvider("ping", "urn:xmpp:ping", new PingIQProvider()); connection.addPacketListener(new PacketListener() { @Override public void processPacket(Packet p) { PingIQ pingIQ = (PingIQ) p; IQ pongIQ = pingIQ.createResultIQ(pingIQ); // 返回 connection.sendPacket(pongIQ); } }, new PacketTypeFilter(PingIQ.class));
两个关联类,PingIQ,PingIQProvider
import org.jivesoftware.smack.packet.IQ; public class PingIQ extends IQ { public static final String ELEMENT = "ping"; public static final String NAMESPACE = "urn:xmpp:ping"; @Override public String getChildElementXML() { StringBuffer sb = new StringBuffer(); sb.append("<").append(ELEMENT).append(" xmlns=\"").append(NAMESPACE) .append("\">"); sb.append("</").append(ELEMENT).append(">"); return sb.toString(); } }
import org.jivesoftware.smack.packet.IQ; import org.jivesoftware.smack.provider.IQProvider; import org.xmlpull.v1.XmlPullParser; public class PingIQProvider implements IQProvider { @Override public IQ parseIQ(XmlPullParser parser) throws Exception { // TODO Auto-generated method stub PingIQ iq = new PingIQ(); return iq; } }
报文如下:
<iq xmlns="jabber:client" type="get" id="65dfds" from="localhost" to="[email protected]/test"><ping xmlns="urn:xmpp:ping"/></iq> <iq type="result" to="localhost" id="65dfds"/>