构建WebIM聊天程序

末蓝、 2022-08-23 05:53 314阅读 0赞

最近研究了一下WebIM，现将学习笔记记录于此。

### 一、WebIM采用技术 ###

本篇实现的WebIM是对现有技术的整合，它包含了如下技术：  
seajs：用于JavaScript模块化编程，seajs简介及用途可以看这儿：[http://blog.csdn.net/fengshuiyue/article/details/51177458][http_blog.csdn.net_fengshuiyue_article_details_51177458]  
layim：阿里大牛贤心制作的一款webim聊天界面，很美观，源码下载地为[http://sentsin.com/layui/layim/][http_sentsin.com_layui_layim]  
JsJac：基于jabber/xmpp的javascript实现，在此完成与后台servlet（JabberHttpBind）的数据交互。下载地址为[https://github.com/sstrigler/JSJaC/][https_github.com_sstrigler_JSJaC]  
2）后台：  
JabberHTTPBind:用于和Openfire进行通信，下载地址为[http://stefan-strigler.de/jhb/][http_stefan-strigler.de_jhb]  
3）服务器：  
openfire：开源的聊天服务器

### 二、通信技术简介 ###

#### 1.xmpp ####

1）webIM采用的是标准通信协议XMPP（Extensible Messageing and Presence Protocol：可扩展消息与存在协议），它目前是主流的四种IM（IM：instant messaging,即时消息）协议之一，其他三种分别为：即时信息和空间协议(IMPP)、空间和即时信息协议(PRIM)、针对即时通讯和空间平衡扩充的进程开始协议SIP(SIMPLE)。  
2）xmpp是采用TCP进行传输的xml流，这不同于QQ的方式（QQ是用二进制流进行传输的）、不同于MSN的方式（MSN采用的是纯文本指令加空格加参数加换行苻的方式），下图是传输XMPP经过的协议栈：  
![xmpp协议][xmpp]  
3）xmpp地址格式：  
一个实体在xmpp网络结构中被称为一个接点，它有唯一的标示符**jabber identifier(JID)**，即实体地址，用来表示一个Jabber用户，但是也可以表示其他内容，例如一个聊天室。一个有效的JID包括下列元素：

> 域名(domain identifier)；  
> 节点(node identifier)；  
> 源(resource identifier)；

**JID完整格式： node@domain/resource**  
4）xmpp格式  
xmpp中定义了3个顶层XML元素:

> Message：用于在两个jabber用户之间发送信息  
> Presence：用来表明用户的状态  
> IQ：一种请求／响应机制，从一个实体从发送请求，另外一个实体接受请求，并进行响应．例如，client在stream的上下文中插入一个元素，向Server请求得到自己的好友列表，Server返回一个里面是请求的结果．

① Message实例

发送端发送的信息：

<?xml version="1.0" encoding="utf-8"?>
    
    <body xmlns="http://jabber.org/protocol/httpbind" rid="424681" sid="Okig9EHLCTA15a-BZ3NRDqOW" key="08ca4f4beeaa588cd170d700fa78a01c8d469df1">
      <message xmlns="jabber:client" to="webchattest@openfire402/webim" type="chat">
        <body>您好，webchattest</body>
      </message>
    </body>

接收端接收到的信息：

<?xml version="1.0" encoding="utf-8"?>
    
    <body xmlns="http://jabber.org/protocol/httpbind">
      <message xmlns="jabber:client" from="admin@openfire402/webim" to="webchattest@openfire402/webim" type="chat">
        <body>您好，webchattest</body>
        <delay xmlns="urn:xmpp:delay" from="openfire402" stamp="2016-06-11T04:52:23.153Z"></delay>
      </message>
    </body>

<?xml version="1.0" encoding="utf-8"?>
    
    <body xmlns="http://jabber.org/protocol/httpbind">
      <message xmlns="jabber:client" from="admin@openfire402/webim" to="webchattest@openfire402/webim" type="chat">
        <body>webchattest上线后admin发的信息</body>
      </message>
    </body>

**message属性介绍：**

> **from属性**：设置消息发送方自身的FullJID（node@domain/resource）  
> **to属性**：设置消息接收方的Bare JID（node@domain），通常第一次发送方无法确知接收方的Full JID，通过服务器中转路由时由服务器根据Base JID映射接收方的Full JID；但如果这个消息是在回复之前接收到的消息，则to属性应该包含对方完整的Full JID；如此设计的好处在于：当to属性设定为Full JID时可以帮助服务器省却了接收者资源定位（接入定位），在一个IM服务集群环境中这种定位通常意味着一次分布式缓存读取操作。  
> **type属性**：XMPP约定了type的枚举值，包括：
> 
>  *  chat：表明在一个点对点会话环境中的聊天消息。
>  *  groupchat：表明在一个多人会话环境中的聊天消息。
>  *  headline： 通常一些系统通知、警告、实时数据更新采用此类型，这类消息不期待客户端回复或响应，具有很高的实时性，不需要离线存储。
>  *  normal： 默认的消息类型（缺乏type属性时），通常表达一种要求接收方必须确认的消息，一般用于系统提示强制用户确认或取消等。
>  *  error： 表示一个错误消息，可能由服务端发送给客户端，也可能是另一个客户接收端回应给客户发送端，此类消息也不需要离线存储。

**message子元素：**

<subject>表明一个消息主题，通常客户端实现显示在聊天窗口标题栏处
    <body>消息内容部分
    <subject>和<subject>都允许包含多个元素标签，不同的标签根据xml:lang表达了不同的语言（XMPP可是一个国际化协议）

下面这是完整的message消息格式：

<message from='node@domain/resource' to='node@domain' type='chat' xml:lang='en'>
      <subject>hello!</subject>
      <subject xml:lang='zh'>
        你好
      </subject>
      <body>welcome to meet you</body>
      <body xml:lang='zh'>
         很高兴认识你
      </body>
    </message>

② Presence  
用来表明用户的状态，如：online、away、dnd(请勿打扰)等。当用户离线或改变自己的状态时，就会在stream的上下文中插入一个Presence元素，来表明自身的状态．结构如下所示：

<presence>
        from='node@domain/resource'
        to='node@domain'
        <status>online</status>
    </presence>

presence 元素可以取下面几种值:

*  probe :用于向接受消息方发送特殊的请求
 *  subscribe:当接受方状态改变时，自动向发送方发送presence信息。

③ IQ

一种请求／响应机制，从一个实体从发送请求，另外一个实体接受请求，并进行响应．例如，client在stream的上下文中插入一个元素，向Server请求得到自己的好友列表，Server返回一个里面是请求的结果。结构如下所示：

IQ 主要的属性是type。包括:

*  get：获取当前域值；
 *  set：设置或替换get查询的值；
 *  result：说明成功的响应了先前的查询；
 *  error：查询和响应中出现的错误；

#### 2.openfire ####

本文采用的是openfire4.0.2版本的，openfire的安装配置简单记录如下：  
1）在官网[http://www.igniterealtime.org/downloads/index.jsp\#openfire][http_www.igniterealtime.org_downloads_index.jsp_openfire] 下载openfire，安装即可  
2）在“openfire安装目录/bin”目录下运行openfired.exe程序，运行效果如下图：  
![openfired][]  
3）第一次登陆[http://localhost:9090/][http_localhost_9090] 会进入openfire配置页面，基本上使用默认值即可，下面介绍需要注意的几个地方  
a.服务器设置  
需要注意的是 **域** 的设置，这块儿会关系到 JID（node@domain/resource） domain的取值  
![域][20160611140830683]  
b.数据库设置  
如果选择 **标准数据库连接** ![标准数据库连接][20160611140329848] ，则需要导入openfire的sql文件，该文件存储在：openfire安装目录\\resources\\database 目录下，如下图：  
![openfire][]

### 三、webIM实现 ###

由于使用的都是现成的技术，故本篇的webIM重在前端的编程

#### 1.封装JsJac通信类 ####

该类采用了该博主（[http://www.cnblogs.com/hoojo][http_www.cnblogs.com_hoojo]）js端 通信类，该类定义如下：

define(function(require, exports,module){ 
        require('../base_module/jsjac/jsjac.js');
        require('../base_module/jquery-1.11.1.min.js');
        var util = require('../util/util.js');
    
        var 
            chatConnConfig = {
                httpbase: '',//window.contextPath + "/JHB/", //请求后台http-bind服务器url
                domain: '', //window["serverDomin"], //"192.168.5.231", // 192.168.5.231 当前有效域名
                username: "",
                pass: "",
                timerval: 2000, // 设置请求超时
                resource: "webim", // 链接资源标识
                register: false // 是否注册
            },
            chatObj = null, //聊天实体
            //writeReceiveMessage = null;
            chatConnection = {},
            onlineStatus = {
                available: '在线',
                chat: '欢迎聊天',
                away: '离开',
                xa: '不可用',
                dnd: '请勿打扰',
                invisible: '隐身',
                unavailable: '离线'
            };
            chatConnection.connected = function(){ 
    
            }
        /** * chatConnCfg = { * httpbase: '',//window.contextPath + "/JHB/", //请求后台http-bind服务器url domain: '', //window["serverDomin"], //"192.168.5.231", // 192.168.5.231 当前有效域名 timerval: 2000, // 设置请求超时 resource: '' } */
        init = function(chatConnCfg,chatobjparam){ 
            chatObj = chatobjparam;
            //chatConnConfig.oDbg = new JSJaCConsoleLogger(4);
            if(chatConnCfg){
                $.extend(chatConnConfig, chatConnConfig, chatConnCfg);
                //chatConnConfig.httpbase = chatConnCfg.httpbase;
                //chatConnConfig.domain = chatConnCfg.domain;
                //chatConnConfig.resource = chatConnCfg.resource;
                //chatConnConfig.timerval = chatConnCfg.timerval;
                //chatConnConfig.writeReceiveMessage = chatConnCfg.writeReceiveMessage;
            }
    
            // Debugger plugin
            if (typeof (Debugger) == "function") {
                chatConnConfig.oDbg = new Debugger(2, chatConnConfig.resource);
                chatConnConfig.oDbg.start();
            } else {
                chatConnConfig.oDbg = function () { 
                };
                chatConnConfig.oDbg.log = function () { 
                };
            }
            try {
                if (JSJaCCookie.read("btype").getValue() == "binding") {
                    chatConnection = new JSJaCHttpBindingConnection({ "oDbg": chatConnConfig.oDbg});
                    //rdbgerjac.chat.setupEvent(remote.connection);
                    setupEvent(chatConnection)
                    if (chatConnection.resume()) {
                    }
                } 
            } catch (e) {
    
            } // reading cookie failed - never mind
        }
    
        /** * loginPerson为对象 * loginPerson = { username:'', password:'', register:false //是否注册改用户 } */
        login = function (loginPerson) { 
            try {
                // 链接参数
                var connectionConfig = chatConnConfig;
                // Debugger console
                if (typeof (oDbg) != "undefined") {
                    connectionConfig.oDbg = oDbg;
                }
                chatConnection = new JSJaCHttpBindingConnection(connectionConfig);
                // 安装（注册）Connection事件模型
                setupEvent(chatConnection);
                // setup args for connect method
                if (loginPerson) {
                    connectionConfig.username = loginPerson.username;
                    connectionConfig.pass = loginPerson.password;
                    connectionConfig.register = loginPerson.register;
                }
                // 连接服务器
                chatConnection.connect(connectionConfig);
    
                changeStatus("away", "away", 1, "chat");
            } catch (e) {
                //登录错误信息显示
                alert(e.toString());
            } finally {
                return false;
            }
        },
    
        setupEvent = function (con) { 
            con.registerHandler('message', handleMessage);
            con.registerHandler('presence', handlePresence);
            con.registerHandler('iq', handleIQ);
            con.registerHandler('onconnect', handleConnected);
            con.registerHandler('onerror', handleError);
            con.registerHandler('status_changed', handleStatusChanged);
            con.registerHandler('ondisconnect', handleDisconnected);
    
            con.registerIQGet('query', NS_VERSION, handleIqVersion);
            con.registerIQGet('query', NS_TIME, handleIqTime);
        },
    
        // 改变用户状态
        changeStatus = function (type, status, priority, show) { 
            type = type || "unavailable";
            status = status || "online";
            priority = priority || "1";
            show = show || "chat";
            var presence = new JSJaCPresence();
            presence.setType(type); // unavailable invisible
            presence.setStatus(status); // online
            presence.setPriority(priority); // 1
            presence.setShow(show); // chat
            if (chatConnection) {
                chatConnection.send(presence);
            }
        },
    
        // 发送远程消息
        sendMessage = function (msg, to) { 
            try {
                if (msg == "") {
                    return false;
                }
    
                var tosendstr = "";
                if (to) {
                    tosendstr= to + '@' + chatConnConfig.domain 
                                  + '/' +chatConnConfig.resource;
                } else {
                    // 向chat接收信息区域写消息
                    if (chatObj.writeReceiveMessage) {
    // var html = "你没有指定发送者的名称";
    // var msgobj = { 
    // receiveType:'noSendUser',
    // objtime:'',
    // objname:'',
    // objface:'',
    // content:html
    // };
    // chatObj.writeReceiveMessage(msgobj);
                    }
                    return false;
                }
                // 构建jsjac的message对象
                var message = new JSJaCMessage();
                message.setTo(new JSJaCJID(tosendstr));
                message.setType("chat"); // 单独聊天，默认为广播模式
                message.setBody(msg);
                // 发送消息
                chatConnection.send(message);
                return false;
            } catch (e) {
                //var html = "<div class='msg error''>Error: " + e.message + "</div>";
                alert(e.message);
                return false;
            }
        },
        // 退出、断开链接
        logout = function () { 
            var presence = new JSJaCPresence();
            presence.setType("unavailable");
            if (chatConnection) {
                chatConnection.send(presence);
                chatConnection.disconnect();
            }
        },
    
        errorHandler = function (event) { 
            var e = event || window.event;
            //alert(e);显示错误信息
            if (chatConnection && chatConnection.connected()) {
                chatConnection.disconnect();
            }
            return false;
        },
        unloadHandler = function () { 
            var con = chatConnection;
            if (typeof con != "undefined" && con && con.connected()) {
                  // save backend type
                if (con._hold) { // must be binding
                    (new JSJaCCookie("btype", "binding")).write();
                } 
                if (con.suspend) {
                    con.suspend();
                }
            }
        },
    
        // 重新连接服务器
        reconnection = function () { 
            chatConnConfig.register = false;
            if (chatConnection.connected()) {
                chatConnection.disconnect();
            }
            login();
        }
    
    /* ########################### Handler Event ############################# */   
        handleIQ =  function (aIQ) { 
            chatConnection.send(aIQ.errorReply(ERR_FEATURE_NOT_IMPLEMENTED));
            var content = aIQ.xml().htmlEnc();
            var nowstr = util.getDatetime();
    
            var msgobj = {
                    receiveType:'handleIQ',
                    objtime:nowstr,
                    objname:'',
                    objface:'',
                    content:content
            };
            chatObj.writeReceiveMessage(msgobj);
        },
        handleMessage = function (aJSJaCPacket) { 
            var user = aJSJaCPacket.getFromJID().toString();
            var userName = user.split("@")[0];
            var content = aJSJaCPacket.getBody();
            var nowstr = util.getDatetime();
    
            var msgobj = {
                    receiveType:'handleMessage',
                    objtime:nowstr,
                    objname:userName,
                    objface:'',
                    content:content
            };
            if(content == undefined || content == null || content == ''){
    
            }else{
                chatObj.writeReceiveMessage(msgobj);
            }
        },
        handlePresence = function (aJSJaCPacket) { 
            var user = aJSJaCPacket.getFromJID();
            var userName = user.toString().split("@")[0];
            var status = '';
            var html = "<div class=\"msg\">";
            if (!aJSJaCPacket.getType() && !aJSJaCPacket.getShow()) {
                html += "<b>" + userName + " 上线了.</b>";
            } else {
                html += "<b>" + userName + " 设置 presence 为： ";
                if (aJSJaCPacket.getType()) {
                    html += aJSJaCPacket.getType() + ".</b>";
                } else {
                    html += aJSJaCPacket.getShow() + ".</b>";
                }
                if (aJSJaCPacket.getStatus()) {
                    html += " (" + aJSJaCPacket.getStatus().htmlEnc() + ")";
                }
            }
            html += "</div>";
    
            // 向chat接收信息区域写消息
            var nowstr = util.getDatetime();
            var msgobj = {
                    receiveType:'handlePresence',
                    objtime:nowstr,
                    objname:userName,
                    objface:'',
                    content:html
            };
            chatObj.writeReceiveMessage(msgobj);
        },
    
        handleError = function (event) { 
            var e = event || window.event;
            var html = "An error occured:<br />" 
                + ("Code: " + e.getAttribute("code") 
                + "\nType: " + e.getAttribute("type") 
                + "\nCondition: " + e.firstChild.nodeName).htmlEnc();
    
            var content = "";
            switch (e.getAttribute("code")) {
                case "401":
                    content = "登陆验证失败！";
                    break;
                // 当注册发现重复，表明该用户已经注册，那么直接进行登陆操作 
                case "409":
                    //content = "注册失败！\n\n请换一个用户名！";
                    chatConnection.reconnection();
                    break;
                case "503":
                    content = "无法连接到IM服务器，请检查相关配置！";
                    break;
                case "500":
                    var content = "服务器内部错误！\n\n连接断开！<br/><a href='javascript: self.parent.remote.jsjac.chat.reconnection();'>重新连接</a>";
                    // 向chat接收信息区域写消息
    
                    break;
                default:
                    break;
            }
            if (content) {
                var nowstr = util.getDatetime();
                var msgobj = {
                        receiveType:'handleError',
                        objtime:nowstr,
                        objname:chatConnConfig.username,
                        objface:'',
                        content:content
                };
                chatObj.writeReceiveMessage(msgobj);
            }
            if (chatConnection.connected()) {
                chatConnection.disconnect();
            }
        },
        // 状态变化触发事件
        handleStatusChanged = function (status) { 
            //remote.console.info("<div>当前用户状态: " + status + "</div>");
            //remote.dbger.log("当前用户状态: " + status);
            if (status == "disconnecting") {
                var html = "<b style='color:red;'>你离线了！</b>";
                // 向chat接收信息区域写消息
                var nowstr = util.getDatetime();
                var msgobj = {
                        receiveType:'handleStatusChanged',
                        objtime:nowstr,
                        objname:chatConnConfig.username,
                        objface:'',
                        content:html
                };
                chatObj.writeReceiveMessage(msgobj);
            }
        },
        // 建立链接触发事件方法
        handleConnected = function () { 
            chatConnection.send(new JSJaCPresence());
        },
        // 断开链接触发事件方法
        handleDisconnected = function () { 
    
        },
        handleIqVersion = function (iq) { 
            chatConnection.send(iq.reply([
                iq.buildNode("name", chatConnConfig.resource), 
                iq.buildNode("version", JSJaC.Version), 
                iq.buildNode("os", navigator.userAgent)
            ]));
            return true;
        },
        handleIqTime = function (iq) { 
            var now = new Date();
            chatConnection.send(iq.reply([
                iq.buildNode("display", now.toLocaleString()), 
                iq.buildNode("utc", now.jabberDate()), 
                iq.buildNode("tz", now.toLocaleString().substring(now.toLocaleString().lastIndexOf(" ") + 1))
            ]));
            return true;
        }
    
        //exports.writeReceiveMessage = writeReceiveMessage;
        exports.init = init;
        exports.login = login;
        exports.sendMessage = sendMessage;
        exports.changeStatus = changeStatus;
        exports.logout = logout;
        exports.chatObj = chatObj;
    
        $(window).bind({
            unload: unloadHandler,
            error: errorHandler,
            beforeunload: logout
       });
    });

#### 2.调用layim.js实现聊天界面类 ####

define(function(require, exports,module){ 
    
        //require('../base_module/lay/lib.js');
        require('../base_module/jquery-1.11.1.min.js');
        require('../base_module/lay/layer/layer.min.js');
        serverChat = require('./serverchat.js');
        var util = require('../util/util.js');
    
        var config = {
            msgurl: '私信地址',
            chatlogurl: '聊天记录url前缀',
            aniTime: 200,
            right: -232,
            api: {
                friend: 'js/layim/friend.json', //好友列表接口
                group: 'js/layim/group.json', //群组列表接口 
                chatlog: 'js/layim/chatlog.json', //聊天记录接口
                groups: 'js/layim/groups.json', //群组成员接口
                sendurl: '' //发送消息接口
            },
            user: { //当前用户信息
                name: '测试用户',
                face: 'http://tp3.sinaimg.cn/3850354634/180/40048989275/0'
            },
    
            //自动回复内置文案，也可动态读取数据库配置
            autoReplay: [
                '您好，我现在有事不在，一会再和您联系。', 
                '你没发错吧？',
                '洗澡中，请勿打扰，偷窥请购票，个体四十，团体八折，订票电话：一般人我不告诉他！',
                '你好，我是主人的美女秘书，有什么事就跟我说吧，等他回来我会转告他的。',
                '我正在拉磨，没法招呼您，因为我们家毛驴去动物保护协会把我告了，说我剥夺它休产假的权利。',
                '<（@￣︶￣@）>',
                '你要和我说话？你真的要和我说话？你确定自己想说吗？你一定非说不可吗？那你说吧，这是自动回复。',
                '主人正在开机自检，键盘鼠标看好机会出去凉快去了，我是他的电冰箱，我打字比较慢，你慢慢说，别急……',
                '(*^__^*) 嘻嘻，是贤心吗？'
            ],
    
    
            chating: {},
            hosts: (function(){ 
                var dk = location.href.match(/\:\d+/);
                dk = dk ? dk[0] : '';
                return 'http://' + document.domain + dk + '/';
            })(),
            json: function(url, data, callback, error){ 
                return $.ajax({
                    type: 'POST',
                    url: url,
                    data: data,
                    dataType: 'json',
                    success: callback,
                    error: error
                });
            },
            stopMP: function(e){ 
                e ? e.stopPropagation() : e.cancelBubble = true;
            }
        }, dom = [$(window), $(document), $('html'), $('body')], xxim = {};
    
        /** * obj = { receiveType: //handleIQ,handleMessage,handlePresence,handleError,handleStatusChanged content: } */
    
        //主界面tab
        xxim.tabs = function(index){ 
            var node = xxim.node;
            node.tabs.eq(index).addClass('xxim_tabnow').siblings().removeClass('xxim_tabnow');
            node.list.eq(index).show().siblings('.xxim_list').hide();
            if(node.list.eq(index).find('li').length === 0){
                xxim.getDates(index);
            }
        };
    
        //节点
        xxim.renode = function(){ 
            var node = xxim.node = {
                tabs: $('#xxim_tabs>span'),
                list: $('.xxim_list'),
                online: $('.xxim_online'),
                setonline: $('.xxim_setonline'),
                onlinetex: $('#xxim_onlinetex'),
                xximon: $('#xxim_on'),
                layimFooter: $('#xxim_bottom'),
                xximHide: $('#xxim_hide'),
                xximSearch: $('#xxim_searchkey'),
                searchMian: $('#xxim_searchmain'),
                closeSearch: $('#xxim_closesearch'),
                layimMin: $('#layim_min')
            }; 
        };
    
        //主界面缩放
        xxim.expend = function(){ 
            var node = xxim.node;
            if(xxim.layimNode.attr('state') !== '1'){
                xxim.layimNode.stop().animate({right: config.right}, config.aniTime, function(){ 
                    node.xximon.addClass('xxim_off');
                    try{
                        localStorage.layimState = 1;
                    }catch(e){}
                    xxim.layimNode.attr({state: 1});
                    node.layimFooter.addClass('xxim_expend').stop().animate({marginLeft: config.right}, config.aniTime/2);
                    node.xximHide.addClass('xxim_show');
                });
            } else {
                xxim.layimNode.stop().animate({right: 1}, config.aniTime, function(){ 
                    node.xximon.removeClass('xxim_off');
                    try{
                        localStorage.layimState = 2;
                    }catch(e){}
                    xxim.layimNode.removeAttr('state');
                    node.layimFooter.removeClass('xxim_expend');
                    node.xximHide.removeClass('xxim_show');
                });
                node.layimFooter.stop().animate({marginLeft: 0}, config.aniTime);
            }
        };
    
        //初始化窗口格局
        xxim.layinit = function(){ 
            var node = xxim.node;
    
            //主界面
            try{
                if(!localStorage.layimState){       
                    config.aniTime = 0;
                    localStorage.layimState = 1;
                }
                if(localStorage.layimState === '1'){
                    xxim.layimNode.attr({state: 1}).css({right: config.right});
                    node.xximon.addClass('xxim_off');
                    node.layimFooter.addClass('xxim_expend').css({marginLeft: config.right});
                    node.xximHide.addClass('xxim_show');
                }
            }catch(e){
                layer.msg(e.message, 5, -1);
            }
        };
    
        //聊天窗口
        xxim.popchat = function(param){ 
            var node = xxim.node, log = {};
    
            log.success = function(layero){ 
                layer.setMove();
    
                xxim.chatbox = layero.find('#layim_chatbox');
                log.chatlist = xxim.chatbox.find('.layim_chatmore>ul');
    
                log.chatlist.html('<li data-id="'+ param.id +'" type="'+ param.type +'" id="layim_user'+ param.type + param.id +'"><span>'+ param.name +'</span><em>×</em></li>')
                xxim.tabchat(param, xxim.chatbox);
    
                //最小化聊天窗
                xxim.chatbox.find('.layer_setmin').on('click', function(){ 
                    var indexs = layero.attr('times');
                    layero.hide();
                    node.layimMin.text(xxim.nowchat.name).show();
                });
    
                //关闭窗口
                xxim.chatbox.find('.layim_close').on('click', function(){ 
                    var indexs = layero.attr('times');
                    layer.close(indexs);
                    xxim.chatbox = null;
                    config.chating = {};
                    config.chatings = 0;
                });
    
                //关闭某个聊天
                log.chatlist.on('mouseenter', 'li', function(){ 
                    $(this).find('em').show();
                }).on('mouseleave', 'li', function(){ 
                    $(this).find('em').hide();
                });
                log.chatlist.on('click', 'li em', function(e){ 
                    var parents = $(this).parent(), dataType = parents.attr('type');
                    var dataId = parents.attr('data-id'), index = parents.index();
                    var chatlist = log.chatlist.find('li'), indexs;
    
                    config.stopMP(e);
    
                    delete config.chating[dataType + dataId];
                    config.chatings--;
    
                    parents.remove();
                    $('#layim_area'+ dataType + dataId).remove();
                    if(dataType === 'group'){
                        $('#layim_group'+ dataType + dataId).remove();
                    }
    
                    if(parents.hasClass('layim_chatnow')){
                        if(index === config.chatings){
                            indexs = index - 1;
                        } else {
                            indexs = index + 1;
                        }
                        xxim.tabchat(config.chating[chatlist.eq(indexs).attr('type') + chatlist.eq(indexs).attr('data-id')]);
                    }
    
                    if(log.chatlist.find('li').length === 1){
                        log.chatlist.parent().hide();
                    } 
                });
    
                //聊天选项卡
                log.chatlist.on('click', 'li', function(){ 
                    var othis = $(this), dataType = othis.attr('type'), dataId = othis.attr('data-id');
                    xxim.tabchat(config.chating[dataType + dataId]);
                });
    
                //发送热键切换
                log.sendType = $('#layim_sendtype'), log.sendTypes = log.sendType.find('span');
                $('#layim_enter').on('click', function(e){ 
                    config.stopMP(e);
                    log.sendType.show();
                });
                log.sendTypes.on('click', function(){ 
                    log.sendTypes.find('i').text('')
                    $(this).find('i').text('√');
                });
    
                xxim.transmit();
            };
    
            log.html = '<div class="layim_chatbox" id="layim_chatbox">'
                    +'<h6>'
                    +'<span class="layim_move"></span>'
                    +' <a href="'+ param.url +'" class="layim_face" target="_blank"><img src="'+ param.face +'" ></a>'
                    +' <a href="'+ param.url +'" class="layim_names" target="_blank">'+ param.name +'</a>'
                    +' <span class="layim_rightbtn">'
                    +' <i class="layer_setmin"></i>'
                    +' <i class="layim_close"></i>'
                    +' </span>'
                    +'</h6>'
                    +'<div class="layim_chatmore" id="layim_chatmore">'
                    +' <ul class="layim_chatlist"></ul>'
                    +'</div>'
                    +'<div class="layim_groups" id="layim_groups"></div>'
                    +'<div class="layim_chat">'
                    +' <div class="layim_chatarea" id="layim_chatarea">'
                    +' <ul class="layim_chatview layim_chatthis" id="layim_area'+ param.type + param.id +'"></ul>'
                    +' </div>'
                    +' <div class="layim_tool">'
                    +' <i class="layim_addface" title="发送表情"></i>'
                    +' <a href="javascript:;"><i class="layim_addimage" title="上传图片"></i></a>'
                    //+' <a href="javascript:;"><i class="layim_addfile" title="上传附件"></i></a>'
                    +' <a href="" target="_blank" class="layim_seechatlog"><i></i>聊天记录</a>'
                    +' </div>'
                    +' <textarea class="layim_write" id="layim_write"></textarea>'
                    +' <div class="layim_send">'
                    +' <div class="layim_sendbtn" id="layim_sendbtn">发送<span class="layim_enter" id="layim_enter"><em class="layim_zero"></em></span></div>'
                    +' <div class="layim_sendtype" id="layim_sendtype">'
                    +' <span><i>√</i>按Enter键发送</span>'
                    +' <span><i></i>按Ctrl+Enter键发送</span>'
                    +' </div>'
                    +' </div>'
                    +'</div>'
                    +'</div>';
    
            if(config.chatings < 1){
                $.layer({
                    type: 1,
                    border: [0],
                    title: false,
                    shade: [0],
                    area: ['620px', '493px'],
                    move: ['.layim_chatbox .layim_move', true],
                    moveType: 1,
                    closeBtn: false,
                    offset: [(($(window).height() - 493)/2)+'px', ''],
                    page: {
                        html: log.html
                    }, success: function(layero){ 
                        log.success(layero);
                    }
                })
            } else {
                log.chatmore = xxim.chatbox.find('#layim_chatmore');
                log.chatarea = xxim.chatbox.find('#layim_chatarea');
    
                log.chatmore.show();
    
                log.chatmore.find('ul>li').removeClass('layim_chatnow');
                log.chatmore.find('ul').append('<li data-id="'+ param.id +'" type="'+ param.type +'" id="layim_user'+ param.type + param.id +'" class="layim_chatnow"><span>'+ param.name +'</span><em>×</em></li>');
    
                log.chatarea.find('.layim_chatview').removeClass('layim_chatthis');
                log.chatarea.append('<ul class="layim_chatview layim_chatthis" id="layim_area'+ param.type + param.id +'"></ul>');
    
                xxim.tabchat(param);
            }
    
            //群组
            log.chatgroup = xxim.chatbox.find('#layim_groups');
            if(param.type === 'group'){
                log.chatgroup.find('ul').removeClass('layim_groupthis');
                log.chatgroup.append('<ul class="layim_groupthis" id="layim_group'+ param.type + param.id +'"></ul>');
                xxim.getGroups(param);
            }
            //点击群员切换聊天窗
            log.chatgroup.on('click', 'ul>li', function(){ 
                xxim.popchatbox($(this));
            });
        };
    
        //定位到某个聊天队列
        xxim.tabchat = function(param){ 
            var node = xxim.node, log = {}, keys = param.type + param.id;
            xxim.nowchat = param;
    
            xxim.chatbox.find('#layim_user'+ keys).addClass('layim_chatnow').siblings().removeClass('layim_chatnow');
            xxim.chatbox.find('#layim_area'+ keys).addClass('layim_chatthis').siblings().removeClass('layim_chatthis');
            xxim.chatbox.find('#layim_group'+ keys).addClass('layim_groupthis').siblings().removeClass('layim_groupthis');
    
            xxim.chatbox.find('.layim_face>img').attr('src', param.face);
            xxim.chatbox.find('.layim_face, .layim_names').attr('href', param.href);
            xxim.chatbox.find('.layim_names').text(param.name);
    
            xxim.chatbox.find('.layim_seechatlog').attr('href', config.chatlogurl + param.id);
    
            log.groups = xxim.chatbox.find('.layim_groups');
            if(param.type === 'group'){
                log.groups.show();
            } else {
                log.groups.hide();
            }
    
            $('#layim_write').focus();
    
        };
    
        //弹出聊天窗
        xxim.popchatbox = function(othis){ 
            var node = xxim.node, dataId = othis.attr('data-id'), param = {
                id: dataId, //用户ID
                type: othis.attr('type'),
                name: othis.find('.xxim_onename').text(),  //用户名
                face: othis.find('.xxim_oneface').attr('src'),  //用户头像
                href: config.hosts + 'user/' + dataId //用户主页
            }, key = param.type + dataId;
            if(!config.chating[key]){
                xxim.popchat(param);
                config.chatings++;
            } else {
                xxim.tabchat(param);
            }
            config.chating[key] = param;
    
            var chatbox = $('#layim_chatbox');
            if(chatbox[0]){
                node.layimMin.hide();
                chatbox.parents('.xubox_layer').show();
            }
        };
    
        //请求群员
        xxim.getGroups = function(param){ 
            var keys = param.type + param.id, str = '',
            groupss = xxim.chatbox.find('#layim_group'+ keys);
            groupss.addClass('loading');
            config.json(config.api.groups, {}, function(datas){ 
                if(datas.status === 1){
                    var ii = 0, lens = datas.data.length;
                    if(lens > 0){
                        for(; ii < lens; ii++){
                            str += '<li data-id="'+ datas.data[ii].id +'" type="one"><img src="'+ datas.data[ii].face +'"><span class="xxim_onename">'+ datas.data[ii].name +'</span></li>';
                        }
                    } else {
                        str = '<li class="layim_errors">没有群员</li>';
                    }
    
                } else {
                    str = '<li class="layim_errors">'+ datas.msg +'</li>';
                }
                groupss.removeClass('loading');
                groupss.html(str);
            }, function(){ 
                groupss.removeClass('loading');
                groupss.html('<li class="layim_errors">请求异常</li>');
            });
        };
    
        //聊天模版
        xxim.msgTpl = function(param, type){ 
            return '<li class="'+ (type === 'me' ? 'layim_chateme' : '') +'">'
            +'<div class="layim_chatuser">'
                + function(){ 
                    if(type === 'me'){
                        return '<span class="layim_chattime">'+ param.time +'</span>'
                               +'<span class="layim_chatname">'+ param.name +'</span>'
                               +'<img src="'+ param.face +'" >';
                    } else {
                        return '<img src="'+ param.face +'" >'
                               +'<span class="layim_chatname">'+ param.name +'</span>'
                               +'<span class="layim_chattime">'+ param.time +'</span>';      
                    }
                }()
            +'</div>'
            +'<div class="layim_chatsay">'+ param.content +'<em class="layim_zero"></em></div>'
            +'</li>';
        };
    
        //消息接收
        xxim.writeReceiveMessage = function(obj){ 
            var node = xxim.node, log = {};
            node.sendbtn = $('#layim_sendbtn');
            node.imwrite = $('#layim_write');
            var keys = xxim.nowchat.type + xxim.nowchat.id;
            var imarea = xxim.chatbox.find('#layim_area'+ keys);
            if(xxim.nowchat.id === obj.objname){
                obj.objface = xxim.nowchat.face;
            }else{
                obj.objface = 'images/3.png';
            }
    
    
            if(obj.receiveType === 'handleIQ'){
    
            }else if(obj.receiveType === 'handleMessage'){
                xxim.messageTip(1);
                imarea.append(xxim.msgTpl({
                    time: obj.objtime,
                    name: obj.objname,
                    face: obj.objface,
                    content: obj.content
                }));
            }else if(obj.receiveType === 'handlePresence'){
                //对聊天对象to的头像状态的修改
            }else if(obj.receiveType === 'handleError'){
                imarea.append(webxxim.xxim.msgTpl({
                    time: obj.objtime,
                    name: obj.objname,
                    face: obj.objface,
                    content: obj.content
                }),'me');
            }else if(obj.receiveType === 'handleStatusChanged'){
                //对自己头像状态的修改
            }else{
    
            }
            node.imwrite.val('').focus();
            imarea.scrollTop(imarea[0].scrollHeight);
        }
    
        //消息传输
        xxim.transmit = function(){ 
            var node = xxim.node, log = {};
            node.sendbtn = $('#layim_sendbtn');
            node.imwrite = $('#layim_write');
    
            //发送
            log.send = function(){ 
                var data = {
                    content: node.imwrite.val(),
                    id: xxim.nowchat.id,
                    sign_key: '', //密匙
                    _: +new Date
                };
    
                if(data.content.replace(/\s/g, '') === ''){
                    layer.tips('说点啥呗！', '#layim_write', 2);
                    node.imwrite.focus();
                } else {
                    //此处皆为模拟
                    var keys = xxim.nowchat.type + xxim.nowchat.id;            
                    var imarea = xxim.chatbox.find('#layim_area'+ keys);
                    var nowstr = util.getDatetime();
                    imarea.append(xxim.msgTpl({
                        time: nowstr,
                        name: config.user.name,
                        face: config.user.face,
                        content: data.content
                    }, 'me'));
                    node.imwrite.val('').focus();
                    imarea.scrollTop(imarea[0].scrollHeight);
    
    
    /发送信息到服务器///
    
                    serverChat.sendMessage(data.content,xxim.nowchat.id);
    
    //
    
    // setTimeout(function(){ 
    // imarea.append(xxim.msgTpl({ 
    // time: '2014-04-26 0:38',
    // name: xxim.nowchat.name,
    // face: xxim.nowchat.face,
    // content: config.autoReplay[(Math.random()*config.autoReplay.length) | 0]
    // }));
    // imarea.scrollTop(imarea[0].scrollHeight);
    // }, 500);
    
                    /* that.json(config.api.sendurl, data, function(datas){ }); */
                }
    
            };
            node.sendbtn.on('click', log.send);
    
            node.imwrite.keyup(function(e){ 
                if(e.keyCode === 13){
                    log.send();
                }
            });
        };
    
        //事件
        xxim.event = function(){ 
            var node = xxim.node;
    
            //主界面tab
            node.tabs.eq(0).addClass('xxim_tabnow');
            node.tabs.on('click', function(){ 
                var othis = $(this), index = othis.index();
                xxim.tabs(index);
            });
    
            //列表展收
            node.list.on('click', 'h5', function(){ 
                var othis = $(this), chat = othis.siblings('.xxim_chatlist'), parentss = othis.parent();
                if(parentss.hasClass('xxim_liston')){
                    chat.hide();
                    parentss.removeClass('xxim_liston');
                } else {
                    chat.show();
                    parentss.addClass('xxim_liston');
                }
            });
    
            //设置在线隐身
            node.online.on('click', function(e){ 
                config.stopMP(e);
                node.setonline.show();
            });
            node.setonline.find('span').on('click', function(e){ 
                var index = $(this).index();
                config.stopMP(e);
                if(index === 0){
                    node.onlinetex.html('在线');
                    node.online.removeClass('xxim_offline');
                } else if(index === 1) {
                    node.onlinetex.html('隐身');
                    node.online.addClass('xxim_offline');
                }
                node.setonline.hide();
            });
    
            node.xximon.on('click', xxim.expend);
            node.xximHide.on('click', xxim.expend);
    
            //搜索
            node.xximSearch.keyup(function(){ 
                var val = $(this).val().replace(/\s/g, '');
                if(val !== ''){
                    node.searchMian.show();
                    node.closeSearch.show();
                    //此处的搜索ajax参考xxim.getDates
                    node.list.eq(3).html('<li class="xxim_errormsg">没有符合条件的结果</li>');
                } else {
                    node.searchMian.hide();
                    node.closeSearch.hide();
                }
            });
            node.closeSearch.on('click', function(){ 
                $(this).hide();
                node.searchMian.hide();
                node.xximSearch.val('').focus();
            });
    
            //弹出聊天窗
            config.chatings = 0;
            node.list.on('click', '.xxim_childnode', function(){ 
                var othis = $(this);
                xxim.popchatbox(othis);
            });
    
            //点击最小化栏
            node.layimMin.on('click', function(){ 
                $(this).hide();
                $('#layim_chatbox').parents('.xubox_layer').show();
            });
    
    
            //document事件
            dom[1].on('click', function(){ 
                node.setonline.hide();
                $('#layim_sendtype').hide();
            });
        };
    
        //请求列表数据
        xxim.getDates = function(index){ 
            var api = [config.api.friend, config.api.group, config.api.chatlog],
                node = xxim.node, myf = node.list.eq(index);
            myf.addClass('loading');
            config.json(api[index], {}, function(datas){ 
                if(datas.status === 1){
                    var i = 0, myflen = datas.data.length, str = '', item;
                    if(myflen > 1){
                        if(index !== 2){
                            for(; i < myflen; i++){
                                str += '<li data-id="'+ datas.data[i].id +'" class="xxim_parentnode">'
                                    +'<h5><i></i><span class="xxim_parentname">'+ datas.data[i].name +'</span><em class="xxim_nums">（'+ datas.data[i].nums +'）</em></h5>'
                                    +'<ul class="xxim_chatlist">';
                                item = datas.data[i].item;
                                for(var j = 0; j < item.length; j++){
                                    if(item[j].name == config.user.name)
                                        continue;
                                    str += '<li data-id="'+ item[j].id +'" class="xxim_childnode" type="'+ (index === 0 ? 'one' : 'group') +'"><img src="'+ item[j].face +'" class="xxim_oneface"><span class="xxim_onename">'+ item[j].name +'</span></li>';
                                }
                                str += '</ul></li>';
                            }
                        } else {
                            str += '<li class="xxim_liston">'
                                +'<ul class="xxim_chatlist">';
                            for(; i < myflen; i++){
                                str += '<li data-id="'+ datas.data[i].id +'" class="xxim_childnode" type="one"><img src="'+ datas.data[i].face +'" class="xxim_oneface"><span class="xxim_onename">'+ datas.data[i].name +'</span><em class="xxim_time">'+ datas.data[i].time +'</em></li>'; 
                            }
                            str += '</ul></li>';
                        }
                        myf.html(str);
                    } else {
                        myf.html('<li class="xxim_errormsg">没有任何数据</li>');
                    }
                    myf.removeClass('loading');
                } else {
                    myf.html('<li class="xxim_errormsg">'+ datas.msg +'</li>');
                }
            }, function(){ 
                myf.html('<li class="xxim_errormsg">请求失败</li>');
                myf.removeClass('loading');
            });
        };
    
        //渲染骨架
        xxim.view = function(){ 
            var xximNode = xxim.layimNode = $('<div id="xximmm" class="xxim_main">'
                    +'<div class="xxim_top" id="xxim_top">'
                    +' <div class="xxim_search"><i></i><input id="xxim_searchkey" /><span id="xxim_closesearch">×</span></div>'
                    +' <div class="xxim_tabs" id="xxim_tabs"><span class="xxim_tabfriend" title="好友"><i></i></span><span class="xxim_tabgroup" title="群组"><i></i></span><span class="xxim_latechat" title="最近聊天"><i></i></span></div>'
                    +' <ul class="xxim_list" style="display:block"></ul>'
                    +' <ul class="xxim_list"></ul>'
                    +' <ul class="xxim_list"></ul>'
                    +' <ul class="xxim_list xxim_searchmain" id="xxim_searchmain"></ul>'
                    +'</div>'
                    +'<ul class="xxim_bottom" id="xxim_bottom">'
                    +'<li class="xxim_online" id="xxim_online">'
                        +'<i class="xxim_nowstate"></i><span id="xxim_onlinetex">在线</span>'
                        +'<div class="xxim_setonline">'
                            +'<span><i></i>在线</span>'
                            +'<span class="xxim_setoffline"><i></i>隐身</span>'
                        +'</div>'
                    +'</li>'
                    +'<li class="xxim_mymsg" id="xxim_mymsg" title="我的私信"><i></i><a href="'+ config.msgurl +'" target="_blank"></a></li>'
                    +'<li class="xxim_seter" id="xxim_seter" title="设置">'
                        +'<i></i>'
                        +'<div class="">'
    
                        +'</div>'
                    +'</li>'
                    +'<li class="xxim_hide" id="xxim_hide"><i></i></li>'
                    +'<li id="xxim_on" class="xxim_icon xxim_on"></li>'
                    +'<div class="layim_min" id="layim_min"></div>'
                +'</ul>'
            +'</div>');
            dom[3].append(xximNode);
    
            xxim.renode();
            xxim.getDates(0);
            xxim.event();
            xxim.layinit();
        };
    
        // 消息提示
        xxim.messageTip = function (countparam) { 
            if (countparam % 4 != 0) {
                window.focus();
                document.title = "你来了新消息，请查收！";
                countparam ++;
                window.setTimeout(function(){ 
                    xxim.messageTip(countparam)
                    }, 1000);
            } else {
                document.title = "";                
            }
        }
    
    
        //exports.webim = xxim;
        /** * obj = { username: password: * } */
        exports.initWebim = function(obj){ 
            xxim.view();
    
            var chatConnConfig = {
                    httpbase: "http://localhost:8080/webim/JHB/", //请求后台http-bind服务器url
                    domain: 'openfire402', // //"192.168.5.231", // 192.168.5.231 当前有效域名
                    username: "",
                    pass: "",
                    timerval: 2000, // 设置请求超时
                    resource: "webim", // 链接资源标识
                    register: true
            }
            //serverChat.writeReceiveMessage = xxim.writeReceiveMessage;
            serverChat.init(chatConnConfig,xxim);
            var loginPerson = {
                    username:obj.username,
                    password:obj.password,
                    register:false  //是否注册改用户
            }
            serverChat.login(loginPerson);
            if(obj.username == 'webchattest')
            {
                config.user.face = 'http://tp1.sinaimg.cn/1571889140/180/40030060651/1';
            }
            config.user.name = loginPerson.username;
    
        }
    
    });

实现效果如下图：  
![效果][20160611142353414]

源码可在此[下载][Link 1]。

[http_blog.csdn.net_fengshuiyue_article_details_51177458]: http://blog.csdn.net/fengshuiyue/article/details/51177458
[http_sentsin.com_layui_layim]: http://sentsin.com/layui/layim/
[https_github.com_sstrigler_JSJaC]: https://github.com/sstrigler/JSJaC/
[http_stefan-strigler.de_jhb]: http://stefan-strigler.de/jhb/
[xmpp]: /images/20220721/7934565182b74c75a4bbfdd65e312e50.png
[http_www.igniterealtime.org_downloads_index.jsp_openfire]: http://www.igniterealtime.org/downloads/index.jsp#openfire
[openfired]: /images/20220721/e7d2c98b026a484ba59903dcb4f2ca19.png
[http_localhost_9090]: http://localhost:9090/
[20160611140830683]: /images/20220721/5d96d634c7294434a0a3028b4228b8a2.png
[20160611140329848]: /images/20220721/10aa64e284864fe4b61f90ffc143058a.png
[openfire]: /images/20220721/b2ba1e0ed6ce4f6c9d905cd61ded017d.png
[http_www.cnblogs.com_hoojo]: http://www.cnblogs.com/hoojo
[20160611142353414]: /images/20220721/6cf46144489343f1ac743ab164a2a930.png
[Link 1]: http://download.csdn.net/detail/fengshuiyue/9546243