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);
   	}
   
   	@Override
   	public IQ handleIQ(IQ packet) throws UnauthorizedException {
   		return reply;
   	}
   
   	@Override
   	public 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 = "[email protected]";
   		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 block
   			e.printStackTrace();
   		} catch (ForbiddenException e) {
   			// TODO Auto-generated catch block
   			e.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 block
   					e.printStackTrace();
   				}
   	    	}
   	    }