【插件开发三】开发继承IQHandler的插件

OF的插件开发有三种方式，关于如何开发OF的插件，请参考别的文章，本文就不具体描述了。下面讲述如何Register a plugin as anIQHandler。

我们如果要做自己的IQ包处理，可以自定义类如TestTemplateMethodHandler：class TestTemplateMethodHandler extends IQHandler。

以下需要注意：

1.IQ handlers相应包中特定的元素名或命名空间，在public IQHandlerInfo getInfo()方法中写上自己想要注册的元素名及命名空间，

2.在public IQ handlerIQ(IQ packet)方法中写上自己想要对丢进来的IQ包做什么样的处理（注意IQ包是基于问答形式的，所以应该有IQ包的reply）。

3.继承IQHandler的插件，需要注册到IQRouter中去。

以下是注册一个继承IQHandler的插件到IQRouter中的代码：

IQHandler myHandler = new MyIQHander();IQRouter iqRouter = XMPPServer.getInstance().getIQRouter();iqRouter.addHandler(myHandler);

 

接下来就是展示具体的实现继承IQHandler的插件两种方式：（区别主要是在把IQHandler的继承类和插件是否绑定在一起）

1.注册继承IQHandler的插件到IQrouter可以在这个插件初始化的时候：

package com.bis.plugins.iqhandler;import java.io.File;import org.jivesoftware.openfire.IQHandlerInfo;import org.jivesoftware.openfire.IQRouter;import org.jivesoftware.openfire.XMPPServer;import org.jivesoftware.openfire.auth.UnauthorizedException;import org.jivesoftware.openfire.container.Plugin;import org.jivesoftware.openfire.container.PluginManager;import org.jivesoftware.openfire.handler.IQHandler;import org.xmpp.packet.IQ;public class MyIQHandler extends IQHandler implements Plugin{private IQHandlerInfo info;public MyIQHandler() {super("MyIQHandler");info = new IQHandlerInfo("query", "jabber:iq:roster");}@Overridepublic IQHandlerInfo getInfo() {// TODO Auto-generated method stubreturn info;}@Overridepublic IQ handleIQ(IQ packet) throws UnauthorizedException {// TODO Auto-generated method stubIQ reply = IQ.createResultIQ(packet);System.out.println("【iq from】:" + reply.getFrom());System.out.println("【iq to】:" + reply.getTo());return reply;}@Overridepublic void initializePlugin(PluginManager manager, File pluginDirectory) {IQRouter iqRouter = XMPPServer.getInstance().getIQRouter(); iqRouter.addHandler(this); System.out.println("==init myIQHandler==");}@Overridepublic void destroyPlugin() {// TODO Auto-generated method stub}}

或者，单独写一个IQHandler的实现类，再单独写一个插件专门用于把所有扩展的IQHandler继承类注册到IQRouter中：

IQHandler的继承类：

public class GroupTreeIQHander extends IQHandler{    private static final String MODULE_NAME = "group tree handler";    private static final String NAME_SPACE = "com:im:group";    private IQHandlerInfo info;    public GroupTreeIQHander()    {        super(MODULE_NAME);        info = new IQHandlerInfo("gruops", NAME_SPACE);    }    /*     * (non-Javadoc)     *      * @see org.jivesoftware.openfire.handler.IQHandler#getInfo()     */    @Override    public IQHandlerInfo getInfo()    {        return info;    }    /*     * (non-Javadoc)     *      * @see org.jivesoftware.openfire.handler.IQHandler#handleIQ(org.xmpp.packet.IQ)     */    @Override    public IQ handleIQ(IQ packet) throws UnauthorizedException    {        IQ reply = IQ.createResultIQ(packet);        Element groups = packet.getChildElement();//1                if (!IQ.Type.get.equals(packet.getType()))        {            System.out.println("非法的请求类型");            reply.setChildElement(groups.createCopy());            reply.setError(PacketError.Condition.bad_request);            return reply;        }                String userName = StringUtils.substringBefore(packet.getFrom().toString(),"@");        GroupManager.getInstance().initElement(groups,userName);                reply.setChildElement(groups.createCopy());//2        System.out.println("返回的最终XML" + reply.toXML());        return reply;    }}

再写一个插件，用于把扩展的IQHandler继承类注册到IQRouter中：

/** * 服务器端插件类 *  * @author Phoenix *  * Mar 14, 2008 11:03:11 AM *  * version 0.1 */public class GroupTreePlugin implements Plugin{    private XMPPServer server;    /*     * (non-Javadoc)     *      * @see org.jivesoftware.openfire.container.Plugin#destroyPlugin()     */    public void destroyPlugin()    {    }    /*     * (non-Javadoc)     *      * @see org.jivesoftware.openfire.container.Plugin#initializePlugin(org.jivesoftware.openfire.container.PluginManager,     *      java.io.File)     */    public void initializePlugin(PluginManager manager, File pluginDirectory)    {        PluginLog.trace("注册群组树IQ处理器");        server = XMPPServer.getInstance();                server.getIQRouter().addHandler(new GroupTreeIQHander()); //1        server.getIQRouter().addHandler(new UserInfoIQHandler());        server.getIQRouter().addHandler(new DelUserIQHandler());        server.getIQRouter().addHandler(new CreateUserIQHandler());        server.getIQRouter().addHandler(new AddGroupUserIQHandler());        server.getIQRouter().addHandler(new SetRoleIQHandler());    }}