Swift中XMPP的简单使用

var xs : XMPPStream?

建立通道：

func buildStream(){

     xs = XMPPStream()

     xs?.addDelegate(self,delegateQueue:   dispatch_get_main_queue ())

}

发送上线状态

    func goOnline() {
        let p = XMPPPresence ()
       
        xs !. sendElement (p)
    }

   

发送下线状态

    func goOffline() {
        let p = XMPPPresence (type: "unavailabe" )
       
        xs !. sendElement (p)

    }

连接服务器 ( 查看服务器是否可连接 )

    func connect() -> Bool {
        // 建立通道

        buildStream ()

        // 通道已经连接
        if xs !. isConnected () {
            return true

        }

        // 取系统中保存的用户名 / 密码 / 服务器地址
        let user = NSUserDefaults . standardUserDefaults (). stringForKey ( "weixinID" )
        let password = NSUserDefaults . standardUserDefaults (). stringForKey ( "weixinPwd" )

        let server = NSUserDefaults.standardUserDefaults().stringForKey("wxserver")  

        if (user != nil && password != nil ) {
           
            // 通道的用户名
            xs !. myJID = XMPPJID . jidWithString (user!)
           
            xs !. hostName = server!
           
            // 密码保存备用
            pwd = password!
           
            do {
                try xs !. connectWithTimeout ( 5000 )
            } catch _ {
            }
       

        }

断开连接

   func disConnect() {

        if xs != nil {
            if xs !. isConnected () {
                goOffline ()
                xs !. disconnect ()
            }
        }

    }

然后就是实现XMPPStreamDelegate代理协议

// 收到消息
    func xmppStream(sender: XMPPStream !, didReceiveMessage message: XMPPMessage !) {
       
        // 如果是聊天消息
        if message. isChatMessage () {
            var msg = WXMessage ()
           
            // 对方正在输入
            if message. elementForName ( "composing" ) != nil {
                msg. isComposing = true
            }
           
            // 离线消息
            if message. elementForName ( "delay" ) != nil {
                msg. isDelay = true
            }
           
            // 消息正文
            if let body = message. elementForName ( "body" ) {
                msg. body = body. stringValue ()
            }
           
            // 完整用户名
            msg. from = message. from (). user + "@" + message. from (). domain
           
            // 添加到消息代理中
            xxdl ?. newMsg (msg)
           
        }
    }
   
    // 收到状态
    func xmppStream(sender: XMPPStream !, didReceivePresence presence: XMPPPresence !) {
        // 我自己的用户名
        let myUser = sender. myJID . user
       
        // 好友的用户名
        let user = presence. from (). user
       
        // 用户所在的域
        let domain = presence. from (). domain
       
        // 状态类型
        let pType = presence. type ()
       
        // 如果状态不是自己的
        if (user != myUser) {
            // 状态保存的结构
            var zt = Zhuangtai ()
           
            // 保存了状态的完整用户名
            zt. name = user + "@" + domain
           
            // 上线
            if pType == "available" {
                zt. isOnline = true
                ztdl ?. isOn (zt)
               
            } else if pType == "unavailable" {
                ztdl ?. isOff (zt)
               
            }
           
        }
       
       
    }

    

    // 连接成功
    func xmppStreamDidConnect(sender: XMPPStream !) {
        isOpen = true
        do {
            // 验证密码
            try xs !. authenticateWithPassword ( pwd )
        } catch _ {
        }
    }
   
    // 验证成功
    func xmppStreamDidAuthenticate(sender: XMPPStream !) {
        // 上线
        goOnline ()

    }

//使用时，在控制器中获取总代理，接管ztdl和xxdl，实现ztdl和xxdl代理协议

发送消息时，则需要构建xml信息

@IBAction func send(sender: UIBarButtonItem ) {
        // 获取聊天框文本
        let msgStr = msgTF . text
       
        // 如果文本不为空
        if ( !msgStr!. isEmpty ) {
            // 构建 XML 元素 message
            var xmlmessage = DDXMLElement . elementWithName ( "message" ) as ! DDXMLElement
           
            // 增加属性
            xmlmessage. addAttributeWithName ( "type" , stringValue: "chat" )
            xmlmessage. addAttributeWithName ( "to" , stringValue: toBuddyName )
            xmlmessage. addAttributeWithName ( "from" , stringValue: NSUserDefaults . standardUserDefaults (). stringForKey ( "weixinID" ))
           
            // 构建正文
            var body = DDXMLElement . elementWithName ( "body" ) as ! DDXMLElement
            body. setStringValue (msgStr)
           
            // 消息的子节点中加入正文
            xmlmessage. addChild (body)
           
            // 通过通道发送 XML 文本
            zdl (). xs !. sendElement (xmlmessage)
           
            // 清空聊天框
            msgTF . text = ""
           
            // 保存自己的消息

            var msg = WXMessage ()

            msg. isMe = true
            msg. body = msgStr!
           
            // 加入到聊天记录
            msgList . append (msg)
           
            // 通知表格刷新
            self . tableView . reloadData ()
           

        }

注：感谢小波老师