openfire插件开发三，java端开发

也就是服务器端的开发，扩展的协议，需要在服务器端处理。比如送礼物的协议，需要保存用户发送礼物的记录，并且判断用户是否有足够的礼物发送。部分代码记录如下。

1. 扩展IQHandler的模板
   

   package com.xxxx.openfire.handler;import java.awt.TrayIcon.MessageType;import org.jivesoftware.openfire.IQHandlerInfo;import org.jivesoftware.openfire.PacketException;import org.jivesoftware.openfire.XMPPServer;import org.jivesoftware.openfire.auth.UnauthorizedException;import org.jivesoftware.openfire.handler.IQHandler;import org.jivesoftware.openfire.muc.ForbiddenException;import org.jivesoftware.openfire.muc.MUCRole;import org.jivesoftware.openfire.muc.MUCRoom;import org.jivesoftware.openfire.muc.MultiUserChatService;import org.jivesoftware.openfire.user.UserNotFoundException;import org.xmpp.packet.IQ;import org.xmpp.packet.IQ.Type;import org.xmpp.packet.JID;import org.xmpp.packet.Message;import org.xmpp.packet.PacketError;import org.xmpp.packet.PacketExtension;import com.rayclear.openfire.database.DataManager;import de.javawi.jstun.attribute.MessageAttributeInterface.MessageAttributeType;public class XXXXHandler extends IQHandler {private IQHandlerInfo info;private static final String MODULE_NAME = "xxx handler";private static final String NAME_SPACE = "xxx:xxxx:gift";public RayclearHandler(String moduleName) {super(MODULE_NAME);info = new IQHandlerInfo("query", NAME_SPACE);}@Overridepublic IQ handleIQ(IQ packet) throws UnauthorizedException {return reply;}@Overridepublic IQHandlerInfo getInfo() {return info;}}

   
   
   
2. 在route里注册
   

   IQHandler myHandler = new xxxxHandler("xxxx");IQRouter iqRouter = XMPPServer.getInstance().getIQRouter();iqRouter.addHandler(myHandler);

   注册到route链里，就可以 抓取与命名空间匹配的packet了
   
   
3. 取得请求的iq节点
   

   Element groups = packet.getChildElement();Element childElement = packet.getChildElement();        String namespace = childElement.getNamespaceURI();    Element childElementCopy = packet.getChildElement().createCopy();                final String toUser = groups.elementText("host").split("@")[0]

   packet可以取得来自与请求的element元素
   
   
4. 设置返回的节点
   

   IQ reply = IQ.createResultIQ(packet);reply.setType(IQ.Type.error);Element reason = DocumentHelper.createElement("reason");reason.addNamespace("", NAME_SPACE);reason.setText("no");reply.setChildElement(reason);

   由请求方的packet生成回复的packet-
   
   
5. 处理请求后，将消息发送到房间

   String roomjid = "song@conference.192.168.1.126";JID rJid = new JID(roomjid);MultiUserChatService chatService =                XMPPServer.getInstance().getMultiUserChatManager().getMultiUserChatService(rJid);MUCRoom room = chatService.getChatRoom(rJid.getNode());//room.send(reply);org.xmpp.packet.Message  message = new org.xmpp.packet.Message();message.setTo(roomjid);message.setBody("给张飞送花了哦，数量共一朵~");message.setType(Message.Type.groupchat);MUCRole senderRole;try {senderRole = room.getOccupant("tester001");room.sendPublicMessage(message, senderRole);} catch (UserNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (ForbiddenException e) {// TODO Auto-generated catch blocke.printStackTrace();}

   MultiUserChatService :  群组聊天服务，有一系列的服务方法MUCRoom:  房间类，有取的房间信息和向房间发送消息的方法MUCRole： 用户角色，发送消息等需要

6. 如何遍历房间中的所有用户，并使用他们发送消息？
   

   if (room != null) { //改方法，是每个人都发一条信息，显然不行    for (MUCRole role : room.getOccupants()) {    try {room.sendPublicMessage(message, role);} catch (ForbiddenException e) {// TODO Auto-generated catch blocke.printStackTrace();}    }    }