[置顶] JavaScript/jQuery、HTML、CSS 构建 Web IM 远程及时聊天通信程序

这篇文章主要介绍用JavaScript和jQuery、HTML、CSS以及用第三方聊天JavaScript（jsjac）框架构建一个BS Web的聊天应用程序。此程序可以和所有连接到Openfire服务器的应用进行通信、发送消息。如果要运行本程序还需要一个聊天服务器Openfire，

以及需要用到Http方式和Openfire通信的第三方库（JabberHTTPBind）。

JabberHTTPBind是jabber提供的XMPP协议通信的Http bind发送的形式，它可以完成WebBrowser和Openfire建立长连接通信。

主要通信流程如下图所示：

用户A通过JavaScript jsjac.js库发送一条消息到JabberHTTPBind这个Servlet容器，然后JabberHTTPBind的Servlet容器会向Openfire发送XMPP协议的XML报文。Openfire Server接收到报文后解析，然后发送给指定的用户B。JabberHTTPBind获取到Openfire Server发送的数据后，解析报文向当前Servlet容器中的链接的Session中找到指定的用户再发送数据给用户B。

WebBrowser端用的是jsjac和JabberHTTPBind建立的连接，所有数据都要经过JabberHTTPBind解析/转换发送给Openfire。

先上张图看看效果，呵呵~这里是用户hoojo和girl的聊天画面，双方在进行互聊……

可以发送表情、改变字体样式（对方界面也可以看到你的字体样式），同时右侧是显示/收缩详情的信息

收缩详情

聊天界面部分截图

用户登录、注册，sendTo表示你登录后向谁发送聊天消息、并且建立一个聊天窗口

登录成功后，你可以在日志控制台看到你的登陆状态、或是在firebug控制台中看到你的连接请求状态

登陆失败

只有connecting，就没有下文了

登陆成功后，你就可以给指定用户发送消息，且设置你想发送消息的新用户点击new Chat按钮创建新会话

如果你来了新消息，在浏览器的标题栏会有新消息提示

如果你当前聊天界面的窗口都是关闭状态，那么在右下角会有消息提示的闪动图标

这里已经贴出了所有的源代码了，如果你非常的需要源代码（但我希望你能自己创建一个工程去复制源代码，这是我希望看到的），那么你可以通过以下方式联系我

Email：hoojo_@126.com

Blog：http://blog.csdn.net/IBM_hoojo

http://hoojo.cnblogs.com/

http://hoojo.blogjava.net

注：我不会保证在第一时间给你代码，但我会在空闲的时间给你发送源码

导读

如果你对openfire还不是很了解或是不知道安装，建议你看看这2篇文章

http://www.cnblogs.com/hoojo/archive/2012/05/17/2506769.html

http://www.cnblogs.com/hoojo/archive/2012/05/13/2498151.html

因为这里还用到了JabberHTTPBind 以及在使用它或是运行示例的时候会遇到些问题，那么你可以看看这篇文章

http://www.cnblogs.com/hoojo/archive/2012/05/17/2506845.html

开发环境

System：Windows

JavaEE Server：Tomcat 5.0.28+/Tomcat 6

WebBrowser：IE6+、Firefox3.5+、Chrome 已经兼容浏览器

JavaSDK：JDK 1.6+

Openfire 3.7.1

IDE：eclipse 3.2、MyEclipse 6.5

开发依赖库

jdk1.4+

serializer.jar
xalan.jar
jhb-1.0.jar

log4j-1.2.16.jar

jhb-1.0.jar 这个就是JabberHTTPBind，我把编译的class打成jar包了

JavaScript lib

jquery.easydrag.js 窗口拖拽JavaScript lib
jquery-1.7.1.min.js jquery lib
jsjac.js 通信核心库
local.chat-2.0.js 本地会话窗口发送消息JavaScript库
remote.jsjac.chat-2.0.js 远程会话消息JavaScript库
send.message.editor-1.0.js 窗口编辑器JavaScript库

一、准备工作

jsjac JavaScript lib下载：https://github.com/sstrigler/JSJaC/

如果你不喜欢用jsjac JavaScript lib和Openfire通信，那么有一款jQuery的plugin可以供你使用，下载地址

jQuery-XMPP-plugin https://github.com/maxpowel/jQuery-XMPP-plugin

这里有所以能支持Openfire通信的第三方库，有兴趣的可以研究下 http://xmpp.org/xmpp-software/libraries/

jquery.easydrag 下载：http://fromvega.com/code/easydrag/jquery.easydrag.js

jquery 下载：http://code.jquery.com/jquery-1.7.1.min.js

JabberHTTPBind jhb.jar 下载：http://download.csdn.net/detail/ibm_hoojo/4489188

images 图片素材：http://download.csdn.net/detail/ibm_hoojo/4489439

工程目录结构

二、核心代码演示

1、主界面（登陆、消息提示、日志、建立新聊天窗口）代码 index.jsp

<%@ page language="java" pageEncoding="UTF-8" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">

    <title>WebIM Chat</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="author" content="hoojo">
    <meta http-equiv="email" content="hoojo_@126.com">
    <meta http-equiv="blog" content="http://blog.csdn.net/IBM_hoojo">
    <meta http-equiv="blog" content="http://hoojo.cnblogs.com">
    <link rel="stylesheet" type="text/css" href="css/chat-2.0.css" />
    <script type="text/javascript">
        window.contextPath = "<%=path%>";
        window["serverDomin"] = "192.168.8.22";
    </script>
    <script type="text/javascript" src="jslib/jquery-1.7.1.min.js"></script>
    <script type="text/javascript" src="jslib/jsjac.js"></script>
    <!-- script type="text/javascript" src="debugger/Debugger.js"></script-->
    <script type="text/javascript" src="jslib/send.message.editor-1.0.js"></script>
    <script type="text/javascript" src="jslib/jquery.easydrag.js"></script>
    <script type="text/javascript" src="jslib/remote.jsjac.chat-2.0.js"></script>
    <script type="text/javascript" src="jslib/local.chat-2.0.js"></script>
    <script type="text/javascript">
        $(function () {

            $("#login").click(function () {
                var userName = $(":text[name='userName']").val();
                var receiver = $("*[name='to']").val();
                // 建立一个聊天窗口应用，并设置发送者和消息接收者
                $.WebIM({
                    sender: userName,
                    receiver: receiver
                });
                // 登陆到openfire服务器
                 remote.jsjac.chat.login(document.userForm);
                 $("label").text(userName);
                 $("form").hide();
                 $("#newConn").show();
            });

            $("#logout").click(function () {
                 // 退出openfire登陆，断开链接
                 remote.jsjac.chat.logout();
                 $("form").show();
                 $("#newConn").hide();
                 $("#chat").hide(800);
            });

            $("#newSession").click(function () {
                var receiver = $("#sendTo").val();
                // 建立一个新聊天窗口，并设置消息接收者（发送给谁？）
                $.WebIM.newWebIM({
                    receiver: receiver
                });
            });
        });
    </script>
  </head>

  <body>
    <!-- 登陆表单 -->
    <form name="userForm" style="background-color: #fcfcfc; width: 100%;">
        userName：<input type="text" name="userName" value="boy"/>
        password：<input type="password" name="password" value="boy"/>

        register: <input type="checkbox" name="register"/>
        sendTo： <input type="text" id="to" name="to" value="hoojo" width="10"/>
        <input type="button" value="Login" id="login"/> 
    </form>
    <!-- 新窗口聊天 -->
    <div id="newConn" style="display: none; background-color: #fcfcfc; width: 100%;">
           User：<label></label>
           sendTo： <input type="text" id="sendTo" value="hoojo" width="10"/>
           <input type="button" value="new Chat" id="newSession"/> 
           <input type="button" value="Logout" id="logout"/>
    </div>
    <!-- 日志信息 -->
    <div id="error" style="display: ; background-color: red;"></div>
    <div id="info" style="display: ; background-color: #999999;"></div>
    <!-- 聊天来消息提示 -->
    <div class="chat-message">
        <img src="images/write_icon.png" class="no-msg"/>
        <img src="images/write_icon.gif" class="have-msg" style="display: none;"/>
    </div>
  </body>
</html>

下面这段代码尤为重要，它是设置你链接openfire的地址。这个地址一段错误你将无法进行通信！

<script type="text/javascript">

    window.contextPath = "<%=path%>";

    window["serverDomin"] = "192.168.8.22";

</script>

$.WebIM方法是主函数，用它可以覆盖local.chat中的基本配置，它可以完成聊天窗口的创建。$.WebIM.newWebIM方法是新创建一个窗口，只是消息的接收者是一个新用户。

$.WebIM({

sender: userName,

receiver: receiver

});

$.WebIM.newWebIM({

receiver: receiver

});

remote.jsjac.chat.login(document.userForm);方法是用户登录到Openfire服务器

参数如下：

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: "", // 登录用户名

pass: "", // 密码

timerval: 2000, // 设置请求超时

resource: "WebIM", // 链接资源标识

register: true // 是否注册

remote.jsjac.chat.logout();是退出、断开openfire的链接

2、本地聊天应用核心代码 local.chat-2.0.js

/***
 * jquery local chat
 * @version v2.0 
 * @createDate -- 2012-5-28
 * @author hoojo
 * @email hoojo_@126.com
 * @blog http://hoojo.cnblogs.com & http://blog.csdn.net/IBM_hoojo
 * @requires jQuery v1.2.3 or later, send.message.editor-1.0.js
 * Copyright (c) 2012 M. hoo
 **/

;(function ($) {

if (/1\.(0|1|2)\.(0|1|2)/.test($.fn.jquery) || /^1.1/.test($.fn.jquery)) {
alert('WebIM requires jQuery v1.2.3 or later!  You are using v' + $.fn.jquery);
return;
}

var faceTimed, count = 0;

var _opts = defaultOptions = {
version: 2.0,
chat: "#chat",
chatEl: function () {
var $chat = _opts.chat;
if ((typeof _opts.chat) == "string") {
$chat = $(_opts.chat);
} else if ((typeof _opts.chat) == "object") {
if (!$chat.get(0)) {
$chat = $($chat);
}
} 
return $chat;
},
sendMessageIFrame: function (receiverId) {
return $("iframe[name='sendMessage" + receiverId + "']").get(0).contentWindow;
},
receiveMessageDoc: function (receiverId) {
receiverId = receiverId || "";
var docs = [];
$.each($("iframe[name^='receiveMessage" + receiverId + "']"), function () {
docs.push($(this.contentWindow.document));
});
return docs;
//return $($("iframe[name^='receiveMessage" + receiverId + "']").get(0).contentWindow.document);
},
sender: "", // 发送者
receiver: "", // 接收者
setTitle: function (chatEl) {
var receiver = this.getReceiver(chatEl);
chatEl.find(".title").html("和" + receiver + "聊天对话中");
},
getReceiver: function (chatEl) {
var receiver = chatEl.attr("receiver");
if (~receiver.indexOf("@")) {
receiver = receiver.split("@")[0];
}
return receiver;
},

// 接收消息iframe样式
receiveStyle: [
'<html>',
'<head><style type="text/css">',
'body{border:0;margin:0;padding:3px;height:98%;cursor:text;background-color:white;font-size:12px;font-family:Courier,serif,monospace;}',
'.msg{margin-left: 1em;}p{margin:0;padding:0;}.me{color: blue;}.you{color:green;}',
'</style></head>',
'<body></body>',
'</html>'
].join(""),
writeReceiveStyle: function (receiverId) {
this.receiveMessageDoc(receiverId)[0].get(0).write(this.receiveStyle);
},

datetimeFormat: function (v) {
if (~~v < 10) {
return "0" + v;
}
return v;
},
getDatetime: function () {
// 设置当前发送日前
var date = new Date();
var datetime = date.getFullYear() + "-" + date.getMonth() + "-" + date.getDate();
datetime = " " + _opts.datetimeFormat(date.getHours()) 
+ ":" + _opts.datetimeFormat(date.getMinutes()) 
+ ":" + _opts.datetimeFormat(date.getSeconds());
return datetime;
},

/***
 * 发送消息的格式模板
 * flag = true 表示当前user是自己，否则就是对方
 **/ 
receiveMessageTpl: function (userName, styleTpl, content, flag) {
var userCls = flag ? "me" : "you";
if (styleTpl && flag) {
content = [ "<span style='", styleTpl, "'>", content, "</span>" ].join("");
}
return [
'<p class="', userCls, '">', _opts.getDatetime(), '  ', userName, ':</p>',
'<p class="msg">', content, '</p>'
].join("");
},

// 工具类按钮触发事件返回html模板
sendMessageStyle: {
 cssStyle: {
 bold: "font-weight: bold;",
 underline: "text-decoration: underline;",
 italic: "font-style: oblique;"
 },
 setStyle: function (style, val) {
 if (val) {
 _opts.sendMessageStyle[style] = val;
 } else {
 var styleVal = _opts.sendMessageStyle[style];
 if (styleVal === undefined || !styleVal) {
 _opts.sendMessageStyle[style] = true;
 } else {
 _opts.sendMessageStyle[style] = false;
 }
 }
 },
 getStyleTpl: function () {
 var tpl = "";
 $.each(_opts.sendMessageStyle, function (style, item) {
 //alert(style + "#" + item + "#" + (typeof item));
 if (item === true) {
 tpl += _opts.sendMessageStyle.cssStyle[style];
 } else if ((typeof item) === "string") {
 //alert(style + "-------------" + sendMessageStyle[style]);
 tpl += style + ":" + item + ";";
 }
 });
 return tpl;
 }
},
// 向接收消息iframe区域写消息
writeReceiveMessage: function (receiverId, userName, content, flag) {
if (content) {
// 发送消息的样式
var styleTpl = _opts.sendMessageStyle.getStyleTpl();
var receiveMessageDoc = _opts.receiveMessageDoc(receiverId);
$.each(receiveMessageDoc, function () {
var $body = this.find("body");
// 向接收信息区域写入发送的数据
$body.append(_opts.receiveMessageTpl(userName, styleTpl, content, flag));
// 滚动条滚到底部
this.scrollTop(this.height());
});
}
},
// 发送消息
sendHandler: function ($chatMain) {
var doc = $chatMain.find("iframe[name^='sendMessage']").get(0).contentWindow.document;

var content = doc.body.innerHTML;
content = $.trim(content);
content = content.replace(new RegExp("<br>", "gm"), "");
// 获取即将发送的内容
if (content) {
var sender = $chatMain.attr("sender");
var receiverId = $chatMain.attr("id");
// 接收区域写消息
_opts.writeReceiveMessage(receiverId, sender, content, true);

//############# XXX
var receiver = $chatMain.find("#to").val();
//var receiver = $chatMain.attr("receiver");
// 判断是否是手机端会话，如果是就发送纯text，否则就发送html代码
var flag = _opts.isMobileClient(receiver);
if (flag) {
var text = $(doc.body).text();
text = $.trim(text);
if (text) {
// 远程发送消息
remote.jsjac.chat.sendMessage(text, receiver);
}
} else { // 非手机端通信 可以发送html代码
var styleTpl = _opts.sendMessageStyle.getStyleTpl();
content = [ "<span style='", styleTpl, "'>", content, "</span>" ].join("");
remote.jsjac.chat.sendMessage(content, receiver);
}

// 清空发送区域
$(doc).find("body").html("");
}
}, 

faceImagePath: "images/emotions/",
faceElTpl: function (i) {
return [
"<img src='",
this.faceImagePath,
(i - 1),
"fixed.bmp' gif='",
this.faceImagePath,
(i - 1),
".gif'/>"
].join("");
},
// 创建表情html elements
createFaceElement: function ($chat) {
var faces = [];
for (var i = 1; i < 100; i++) {
 faces.push(this.faceElTpl(i));
 if (i % 11 == 0) {
 faces.push("<br/>");
 } 
}
$chat.find("#face").html(faces.join(""));
this.faceHandler($chat);
},
// 插入表情
faceHandler: function ($chat) {
$chat.find("#face img").click(function () {
 $chat.find("#face").hide(150);
 var imgEL = "<img src='" + $(this).attr("gif") + "'/>";
 var $chatMain = $(this).parents(".chat-main");
 var win = $chatMain.find("iframe[name^='sendMessage']").get(0).contentWindow;
 var doc = win.document;
 sendMessageEditor.insertAtCursor(imgEL, doc, win);
});
// 表情隐藏
$chat.find("#face, #face img").mouseover(function () {
window.clearTimeout(faceTimed);
}).mouseout(function () {
window.clearTimeout(faceTimed);
faceTimed = window.setTimeout(function () {
$chat.find("#face").hide(150);
}, 700);
});
},
/***
 * 发送消息工具栏按钮事件方法
 **/
toolBarHandler: function () {
var $chat = $(this).parents(".chat-main");
var targetCls = $(this).attr("class");
if (targetCls == "face") {
$chat.find("#face").show(150);
window.clearTimeout(faceTimed);
faceTimed = window.setTimeout(function () {
$chat.find("#face").hide(150);
}, 1000);
} else if (this.tagName == "DIV") {
_opts.sendMessageStyle.setStyle(targetCls);
} else if (this.tagName == "SELECT") {
_opts.sendMessageStyle.setStyle($(this).attr("name"), $(this).val());
if ($(this).attr("name") == "color") {
$(this).css("background-color", $(this).val());
}
}

// 设置sendMessage iframe的style css
_opts.writeSendStyle();
},
// 设置sendMessage iframe的style css
writeSendStyle: function () {
var styleTpl = _opts.sendMessageStyle.getStyleTpl();
var styleEL = ['<style type="text/css">body{', styleTpl,'}</style>'].join("");

$("body").find("iframe[name^='sendMessage']").each(function () {
var $head = $(this.contentWindow.document).find("head");
if ($head.find("style").size() > 1) {
$head.find("style:gt(0)").remove();
}
if (styleTpl) {
$head.append(styleEL);
}
});
},

isMobileClient: function (receiver) {
var moblieClients = ["iphone", "ipad", "ipod", "wp7", "android", "blackberry", "Spark", "warning", "symbian"];
var flag = false;
for (var i in moblieClients) {
if (~receiver.indexOf(moblieClients[i])) {
return true;
}
}
return false;
},

// 聊天界面html元素
chatLayoutTemplate: function (userJID, sender, receiver, product, flag) {
var display = "";
if (flag) {
display = "style='display: none;'";
}
return [
'<div class="chat-main" id="', userJID,
'" sender="', sender, '" receiver="', receiver, '">',

    '<div id="chat"><div class="radius">',
    '<table>',
    '<tr>',
    '<td colspan="3" class="title"></td>',
    '</tr>',
    '<tr>',
    '<td class="receive-message">',
    '<iframe name="receiveMessage', userJID,'" frameborder="0" width="100%" height="100%"></iframe>',
    '</td>',
    '<td rowspan="4" class="split" ', display, '> </td>',
    '<td rowspan="4" class="product-info" ', display, '>',
    '<ul>',
    '<div class="header"> 商品详情</div>',
    '<li class="pic">',
    '<img src="', product.pic, '"/></li>',
    '<li class="product-name">', product.name, '</li>',
    '<li class="price">团购价：<span>', product.price, '</span>元</li>',
    '<li class="market-price">市场价：<s><i>', product.marketPrice, '</i></s>元</li>',
    '<li>快递公司：', product.deliverOrgs, '</li>',
    '<li>仓库：', product.wareHouses, '</li>',
    product.skuAttrs,
    '</ul>',
    '</td>',
    '</tr>',
    '<tr class="tool-bar">',
    '<td>',
    '<select name="font-family" class="family">',
    '<option>宋体</option>',
    '<option>黑体</option>',
    '<option>幼圆</option>',
    '<option>华文行楷</option>',
    '<option>华文楷体</option>',
    '<option>华文楷体</option>',
    '<option>华文彩云</option>',
    '<option>华文隶书</option>',
    '<option>微软雅黑</option>',
    '<option>Fixedsys</option>',
    '</select>',

    '<select name="font-size">',
    '<option value="12px">大小</option>',
    '<option value="10px">10</option>',
    '<option value="12px">12</option>',
    '<option value="14px">14</option>',
    '<option value="16px">16</option>',
    '<option value="18px">18</option>',
    '<option value="20px">20</option>',
    '<option value="24px">24</option>',
    '<option value="28px">28</option>',
    '<option value="36px">36</option>',
    '<option value="42px">42</option>',
    '<option value="52px">52</option>',
    '</select>',
    '<select name="color">',
'<option value="" selected="selected">颜色</option>',
'<option value="#000000" style="background-color:#000000"></option>',
'<option value="#FFFFFF" style="background-color:#FFFFFF"></option>',
'<option value="#008000" style="background-color:#008000"></option>',
'<option value="#800000" style="background-color:#800000"></option>',
'<option value="#808000" style="background-color:#808000"></option>',
'<option value="#000080" style="background-color:#000080"></option>',
'<option value="#800080" style="background-color:#800080"></option>',
'<option value="#808080" style="background-color:#808080"></option>',
'<option value="#FFFF00" style="background-color:#FFFF00"></option>',
'<option value="#00FF00" style="background-color:#00FF00"></option>',
'<option value="#00FFFF" style="background-color:#00FFFF"></option>',
'<option value="#FF00FF" style="background-color:#FF00FF"></option>',
'<option value="#FF0000" style="background-color:#FF0000"></option>',
'<option value="#0000FF" style="background-color:#0000FF"></option>',
'<option value="#008080" style="background-color:#008080"></option>',
'</select>',
    '<div class="bold"></div>',
    '<div class="underline"></div>',
    '<div class="italic"></div>',
    '<div class="face"></div>',
    '<div class="history">消息记录</div>',
'</td>',
    '</tr>',
    '<tr class="send-message">',
    '<td>',
    '<iframe name="sendMessage', userJID,'" width="100%" height="80px" frameborder="0"></iframe>',
'</td>',
    '</tr>',
    '<tr class="bottom-bar">',
    '<td><input type="text" id="to" name="to" value="hoojo" style="width: 100px;"/><input type="button" value="关闭" id="close"/> ',
    '<input type="button" value="发送(Enter)" id="send"/> </td>',
    '</tr>',
    '</table></div>',
    '<div id="face"></div>',
    '</div>',
'</div>'
].join("");
},

initWebIM: function (userJID, receiver) {
var product = {
name: "小玩熊",
pic: "http://avatar.csdn.net/9/7/A/2_ibm_hoojo.jpg",
price: "198.00",
marketPrice: "899.90",
deliverOrgs: "EMS",
wareHouses: "A库",
skuAttrs: ""
};
var chatEl = $(_opts.chatLayoutTemplate(userJID, _opts.sender, receiver, product));
$("body").append(chatEl);

// 拖拽
$("#" + userJID).easydrag();
// 初始化sendMessageEditor相关信息
sendMessageEditor.iframe = this.sendMessageIFrame(userJID);
sendMessageEditor.init(userJID);

_opts.setTitle(chatEl);
_opts.writeReceiveStyle(userJID);
_opts.writeSendStyle();
_opts.createFaceElement(chatEl);

// 查看更多详情
chatEl.find(".more").click(function () {
var $ul = $(this).parents("ul");
$ul.find(".more").toggle();
$ul.find(".info").toggle();
$ul.find(".pic").toggle();
});

// 收缩详情
chatEl.find(".split").toggle(function () {
$(".product-info").hide();
$(this).parents(".radius").css("border-right-width", "0");
}, function () {
$(".product-info").show();
$(this).parents(".radius").css("border-right-width", "8px");
});

// 工具类绑定事件 settings.toolBarHandler
chatEl.find(".tool-bar td").children().click(this.toolBarHandler);
 chatEl.find("#send").click(function () {
 var $chatMain = $(this).parents(".chat-main");
_opts.sendHandler($chatMain);
 });
 chatEl.find("#close").click(function () {
 var $chatMain = $(this).parents(".chat-main");
$chatMain.hide(500);
 });

 // 首先取消事件绑定，当一次性发多条消息的情况下会同时绑定多个相同事件
$(".have-msg, .no-msg, .chat-main").unbind("click");
 $(".have-msg").bind("click", function () {
$(this).hide();
$(".no-msg").show();
$(".chat-main:hidden").show(150);
});

$(".no-msg").click(function () {
$(".chat-main:hidden").each(function (i, item) {
var top = i * 10 + 50;
var left = i * 20 + 50;
$(this).show(500).css({top: top, left: left});
});
});

$(".chat-main").click(function () {
$(".chat-main").css("z-index", 9999);
$(this).css({"z-index": 10000});
});

 $(this.sendMessageIFrame(userJID).document).keyup(function (event) {
 var e = event || window.event;
 var keyCode = e.which || e.keyCode;
 if (keyCode == 13) {
 var $chatMain = $("#" + $(this).find("body").attr("jid"));
 _opts.sendHandler($chatMain);
 }
 });
},

// 建立新聊天窗口
newWebIM: function (settings) {
var chatUser = remote.userAddress(settings.receiver);
var userJID = "u" + hex_md5(chatUser);
_opts.initWebIM(userJID, chatUser);

$("#" + userJID).find(remote.receiver).val(chatUser);
$("#" + userJID).show(220);
},

// 远程发送消息时执行函数
messageHandler: function (user, content) {
var userName = user.split("@")[0];
var tempUser = user;
if (~tempUser.indexOf("/")) {
tempUser = tempUser.substr(0, tempUser.indexOf("/"));
}
var userJID = "u" + hex_md5(tempUser);

// 首次初始webIM
if (!$("#" + userJID).get(0)) {
// 初始IM面板；
_opts.initWebIM(userJID, user);
} 
// 设置消息接受者的名称
$("#" + userJID).find(remote.receiver).val(user);

if ($("#" + userJID).get(0)) {
// 消息提示
if ($("div[id='" + userJID + "']:hidden").get(0)) {
var haveMessage = $(".have-msg");
haveMessage.show();
$(".no-msg").hide();
}

_opts.messageTip("闪聊有了新消息，请查收！");
// 向chat接收信息区域写消息
remote.jsjac.chat.writeMessage(userJID, userName, content);
} 
},

// 消息提示
messageTip: function () {
if (count % 2 == 0) {
window.focus();
document.title = "你来了新消息，请查收！";
} else {
document.title = "";
}
if (count > 4) {
document.title = "";
count = 0;
} else {
window.setTimeout(_opts.messageTip, 1000);
count ++;
}
}
};

// 初始化远程聊天程序相关方法
var initRemoteIM = function (settings) {

// 初始化远程消息
remote.jsjac.chat.init();

// 设置客户端写入信息方法
remote.jsjac.chat.writeReceiveMessage = settings.writeReceiveMessage;

// 注册事件
$(window).bind({
 unload: remote.jsjac.chat.unloadHandler,
 error: remote.jsjac.chat.errorHandler,
 beforeunload: remote.jsjac.chat.logout
});
}

$.extend({
WebIM: function (opts) {
opts = opts || {};
// 覆盖默认配置
defaultOptions = $.extend(defaultOptions, defaultOptions, opts);
var settings = $.extend({}, defaultOptions, opts);
initRemoteIM(settings);

settings.newWebIM(settings);

$.WebIM.settings = settings;
}
});

$.WebIM.settings = $.WebIM.settings || _opts;
$.WebIM.initWebIM = _opts.initWebIM;
$.WebIM.newWebIM = _opts.newWebIM;
$.WebIM.messageHandler = _opts.messageHandler;

})(jQuery);

这里的方法基本上是聊天窗口上的应用，主要是本地聊天程序的js、HTML元素的操作。如字体、字体大小、颜色、表情、消息的发送等，不涉及到聊天消息发送的核心代码，其中有用到发送远程消息的方法。

remote.jsjac.chat.sendMessage(text, receiver); 这个是发送远程消息的方法，参数1是消息内容、参数2是消息的接收者

如果你有看到这篇文章http://www.cnblogs.com/hoojo/archive/2012/06/18/2553886.html 它是一个单纯的WebIM本地的聊天界面。

3、远程聊天JavaScript核心代码，它是和jsjac库关联的。

remote.jsjac.chat-2.0.js

/**
 * IM chat jsjac remote message
 * @author: hoojo
 * @email: hoojo_@126.com
 * @blog http://hoojo.cnblogs.com & http://blog.csdn.net/IBM_hoojo
 * @createDate: 2012-5-24
 * @version 2.0
 * @requires jQuery v1.2.3 or later
 * Copyright (c) 2012 M. hoo
 **/

var remote = {
debug: "info, error",
chat: "body",
receiver: "#to", // 接受者jquery expression
console: {
errorEL: function () {
if ($(remote.chat).get(0)) {
return $(remote.chat).find("#error");
} else {
return $("body").find("#error");
}
},
infoEL: function () {
if ($(remote.chat).get(0)) {
return $(remote.chat).find("#info");
} else {
return $("body").find("#info");
}
},
// debug info
info: function (html) {
if (~remote.debug.indexOf("info")) {
remote.console.infoEL().append(html);
remote.console.infoEL().get(0).lastChild.scrollIntoView();
}
},
// debug error
error: function (html) {
if (~remote.debug.indexOf("error")) {
remote.console.errorEL().append(html); 
}
},
// clear info/debug console
clear: function (s) {
if ("debug" == s) {
remote.console.errorEL().html("");
} else {
remote.console.infoEL().html("");
}
}
},

userAddress: function (user) {
if (user) {
if (!~user.indexOf("@")) {
user += "@" + remote.jsjac.domain;// + "/" + remote.jsjac.resource;
} else if (~user.indexOf("/")) {
user = user.substr(0, user.indexOf("/"));
}
}
return user;
},
jsjac: {
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: true // 是否注册
}
};
remote.jsjac.chat = {
writeReceiveMessage: function () {
},
setState: function () {
var onlineStatus = new Object();
onlineStatus["available"] = "在线";
onlineStatus["chat"] = "欢迎聊天";
onlineStatus["away"] = "离开";
onlineStatus["xa"] = "不可用";
onlineStatus["dnd"] = "请勿打扰";
onlineStatus["invisible"] = "隐身";
onlineStatus["unavailable"] = "离线";
remote.jsjac.chat.state = onlineStatus;
return onlineStatus;
},
state: null,
init: function () {
// Debugger plugin
if (typeof (Debugger) == "function") {
remote.dbger = new Debugger(2, remote.jsjac.resource);
remote.dbger.start();
} else {
    // if you're using firebug or safari, use this for debugging
    // oDbg = new JSJaCConsoleLogger(2);
    // comment in above and remove comments below if you don't need debugging
remote.dbger = function () {
};
remote.dbger.log = function () {
};
}

try { 
// try to resume a session
if (JSJaCCookie.read("btype").getValue() == "binding") {
remote.connection = new JSJaCHttpBindingConnection({ "oDbg": remote.dbger});
rdbgerjac.chat.setupEvent(remote.connection);
if (remote.connection.resume()) {
remote.console.clear("debug");
}
} 
} catch (e) {
remote.console.errorEL().html(e.name + ":" + e.message);
} // reading cookie failed - never mind

remote.jsjac.chat.setState();
},
login: function (loginForm) {
remote.console.clear("debug"); // reset
try {
// 链接参数
var connectionConfig = remote.jsjac;

// Debugger console
if (typeof (oDbg) != "undefined") {
connectionConfig.oDbg = oDbg;
}
var connection = new JSJaCHttpBindingConnection(connectionConfig);
remote.connection = connection;
// 安装（注册）Connection事件模型
remote.jsjac.chat.setupEvent(connection);

    // setup args for connect method
if (loginForm) {
//connectionConfig = new Object();
//connectionConfig.domain = loginForm.domain.value;
connectionConfig.username = loginForm.userName.value;
connectionConfig.pass = loginForm.password.value;
connectionConfig.register = loginForm.register.checked;
}
// 连接服务器
connection.connect(connectionConfig);

//remote.jsjac.chat.changeStatus("available", "online", 1, "chat");
} catch (e) {
remote.console.errorEL().html(e.toString());
} finally {
return false;
}
},
// 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
if (remote.connection) {
//remote.connection.send(presence);
}

//presence = new JSJaCPresence();
presence.setStatus(status); // online
presence.setPriority(priority); // 1
presence.setShow(show); // chat
if (remote.connection) {
remote.connection.send(presence);
}
},

// 为Connection注册事件
setupEvent: function (con) {
var remoteChat = remote.jsjac.chat;
    con.registerHandler('message', remoteChat.handleMessage);
    con.registerHandler('presence', remoteChat.handlePresence);
    con.registerHandler('iq', remoteChat.handleIQ);
    con.registerHandler('onconnect', remoteChat.handleConnected);
    con.registerHandler('onerror', remoteChat.handleError);
    con.registerHandler('status_changed', remoteChat.handleStatusChanged);
    con.registerHandler('ondisconnect', remoteChat.handleDisconnected);

    con.registerIQGet('query', NS_VERSION, remoteChat.handleIqVersion);
    con.registerIQGet('query', NS_TIME, remoteChat.handleIqTime);
},
// 发送远程消息
sendMessage: function (msg, to) {
try {
if (msg == "") {
return false;
}
var user = "";
if (to) {
if (!~to.indexOf("@")) {
user += "@" + remote.jsjac.domain;
to += "/" + remote.jsjac.resource;
} else if (~to.indexOf("/")) {
user = to.substr(0, to.indexOf("/"));
}
} else {
// 向chat接收信息区域写消息
if (remote.jsjac.chat.writeReceiveMessage) {
var html = "你没有指定发送者的名称";
alert(html);
//remote.jsjac.chat.writeReceiveMessage(receiverId, "server", html, false);
}
return false;
}
var userJID = "u" + hex_md5(user);
$("#" + userJID).find(remote.receiver).val(to);
// 构建jsjac的message对象
var message = new JSJaCMessage();
message.setTo(new JSJaCJID(to));
message.setType("chat"); // 单独聊天，默认为广播模式
message.setBody(msg);
// 发送消息
remote.connection.send(message);
return false;
} catch (e) {
var html = "<div class='msg error''>Error: " + e.message + "</div>";
remote.console.info(html);
return false;
}
},
// 退出、断开链接
logout: function () {
var presence = new JSJaCPresence();
presence.setType("unavailable");
if (remote.connection) {
remote.connection.send(presence);
remote.connection.disconnect();
}
},
errorHandler: function (event) {
var e = event || window.event;
remote.console.errorEL().html(e);
if (remote.connection && remote.connection.connected()) {
remote.connection.disconnect();
}
return false;
},
unloadHandler: function () {
var con = remote.connection;
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();
}
}
},
writeMessage: function (userJID, userName, content) {
// 向chat接收信息区域写消息
if (remote.jsjac.chat.writeReceiveMessage && !!content) {
remote.jsjac.chat.writeReceiveMessage(userJID, userName, content, false);
}
},
// 重新连接服务器
reconnection: function () {
remote.jsjac.register = false;
if (remote.connection.connected()) {
remote.connection.disconnect();
}
remote.jsjac.chat.login();
},
/* ########################### Handler Event ############################# */

handleIQ: function (aIQ) {
var html = "<div class='msg'>IN (raw): " + aIQ.xml().htmlEnc() + "</div>";
remote.console.info(html);
remote.connection.send(aIQ.errorReply(ERR_FEATURE_NOT_IMPLEMENTED));
},
handleMessage: function (aJSJaCPacket) {
var user = aJSJaCPacket.getFromJID().toString();
//var userName = user.split("@")[0];
//var userJID = "u" + hex_md5(user);
var content = aJSJaCPacket.getBody();
var html = "";
html += "<div class=\"msg\"><b>消息来自 " + user + ":</b><br/>";
html += content.htmlEnc() + "</div>";
remote.console.info(html);

$.WebIM.messageHandler(user, content);
},
handlePresence: function (aJSJaCPacket) {
var user = aJSJaCPacket.getFromJID();
var userName = user.toString().split("@")[0];
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>";
remote.console.info(html);

// 向chat接收信息区域写消息
remote.jsjac.chat.writeMessage("", userName, html);
},
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();
remote.error(html);

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！";
remote.jsjac.chat.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 contents = "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>";
remote.jsjac.chat.writeMessage("", "系统", contents);
break;
default:
break;
}
if (content) {
alert("WeIM: " + content);
}
if (remote.connection.connected()) {
remote.connection.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
remote.jsjac.chat.writeMessage("", "系统", html);
}
},
// 建立链接触发事件方法
handleConnected: function () {
remote.console.clear("debug"); // reset
remote.connection.send(new JSJaCPresence());
},
// 断开链接触发事件方法
handleDisconnected: function () {

},
handleIqVersion: function (iq) {
remote.connection.send(iq.reply([
iq.buildNode("name", remote.jsjac.resource), 
iq.buildNode("version", JSJaC.Version), 
iq.buildNode("os", navigator.userAgent)
]));
return true;
},
handleIqTime: function (iq) {
var now = new Date();
remote.connection.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;
}
};

这个文件的代码就是用jsjac库和openfire建立通信的核心代码，代码中已经有注释，这里我就不再赘述。如果有什么不懂的可以给我留言。

4、消息区域、编辑器代码 send.message.editor-1.0.js

/**
 * IM chat Send Message iframe editor
 * @author: hoojo
 * @email: hoojo_@126.com
 * @blog: http://blog.csdn.net/IBM_hoojo 
 * @createDate: 2012-5-24
 * @version 1.0
 **/
var agent = window.navigator.userAgent.toLowerCase();
var sendMessageEditor = {

 // 获取iframe的window对象
getWin: function () {
        return /*!/firefox/.test(agent)*/false ? sendMessageEditor.iframe.contentWindow : window.frames[sendMessageEditor.iframe.name];
    },

//获取iframe的document对象
getDoc: function () {
return !/firefox/.test(agent) ? sendMessageEditor.getWin().document : (sendMessageEditor.iframe.contentDocument || sendMessageEditor.getWin().document);
},

init: function (userJID) {
//打开document对象，向其写入初始化内容，以兼容FireFox
var doc = sendMessageEditor.getDoc();
doc.open();
var html = [
'<html>', 
'<head><style type="text/css">body{border:0;margin:0;padding:3px;height:98%;cursor:text;background-color:white;font-size:12px;font-family:Courier,serif,monospace;}</style></head>',
'<body jid="', userJID, '"></body>', 
'</html>'].join("");
doc.write(html);
//打开document对象编辑模式
doc.designMode = "on";
doc.close();
},

 getContent: function () {
 var doc = sendMessageEditor.getDoc();
 //获取编辑器的body对象
var body = doc.body || doc.documentElement;
//获取编辑器的内容
var content = body.innerHTML;
//对内容进行处理，例如替换其中的某些特殊字符等等
//Some code

//返回内容
return content;
 },

  //统一的执行命令方法
execCmd: function (cmd, value, d){
var doc = d || sendMessageEditor.getDoc();
    //doc对象的获取参照上面的代码
    //调用execCommand方法执行命令
    doc.execCommand(cmd, false, value === undefined ? null : value);
},

getStyleState: function (cmd) {
var doc = sendMessageEditor.getDoc();
//doc对象的获取参考上面的对面
//光标处是否是粗体
var state = doc.queryCommandState(cmd);
if(state){
  //改变按钮的样式
}
return state;
},
insertAtCursor: function (text, d, w){
var doc = d || sendMessageEditor.getDoc();
var win = w || sendMessageEditor.getWin();
//win对象的获取参考上面的代码
if (/msie/.test(agent)) {
win.focus();
var r = doc.selection.createRange();
if (r) {
r.collapse(true);
    r.pasteHTML(text);      
}
} else if (/gecko/.test(agent) || /opera/.test(agent)) {
win.focus();
sendMessageEditor.execCmd('InsertHTML', text, doc);
} else if (/safari/.test(agent)) {
sendMessageEditor.execCmd('InsertText', text, doc);
}
}
};

5、css样式 chat-2.0.css

/**
 * function: im web chat css
 * author: hoojo
 * createDate: 2012-5-26 上午11:42:10
 */
@CHARSET "UTF-8";

*, body {
font-family: Courier,serif,monospace;
font-size: 12px;
padding: 0;
margin: 0;
}

.chat-main {
position: absolute;
/*right: 80px;*/
left: 50px;
top: 20px;
z-index: 999;
display: none;
}

.chat-main .radius {
background-color: white;
border: 8px solid #94CADF;
border-radius: 1em;
}

#chat {
position: relative;
/*left: 150px;*/
padding: 0;
margin: 0;
}
#chat table {
border-collapse: collapse;
width: 435px;
*width: 460px;
/*width: 410px;*/
/*width: 320px;*/
}

#chat table .title {
font-weight: bold;
color: green;
padding: 3px;
background-color: #94CADF;
}

/* 收缩条 */
#chat table .split {
background-color: #94CADF;
cursor: pointer;
}

/* ################## product info #################### */
#chat table .product-info {
width: 30%;
/*display: none;*/
padding: 0;
margin: 0;
vertical-align: top;
}

#chat table .product-info ul {
margin: 0;
padding: 0;
}

#chat table .product-info ul div.header {
background-color: #EBEFFE;
line-height: 22px;
font-size: 12px;
color: black;
}

#chat table .product-info ul li {
list-style: none outside none;
background-color: white;
text-overflow: ellipsis;
white-space: nowrap;
overflow: hidden;
padding-left: 5px;
line-height: 22px;
font-size: 11px;
color: #6F6F6F;
width: 140px;
}

#chat table .product-info ul li.pic {
height: 200px;
padding: 0 5px 0 5px;
border: 1px dashed #ccc;
text-align: center;
}

#chat table .product-info ul li.pic img {
}

#chat table .product-info ul li.product-name {
font-weight: bold;
color: black;
}

#chat table .product-info ul li.price span {
font-family: Courier;
font-size: 16px;
font-weight: bold;
color: #ED4E08;
}

#chat table .product-info ul li.market-price s {
color: black;
}

#chat table .product-info ul li a {
float: right;
}

#chat table .product-info ul li.info {
display: none;
}

/*########### 接收消息区域 ############ */
#chat table .receive-message {
height: 250px;
}

#chat table .send-message {
width: 100%;
/*height: auto;*/
}

#chat table td {
/*border: 1px solid white;*/
}

#chat table .bottom-bar {
background-color: #94CADF;
text-align: right;
}

/* ############## 工具条 ################# start */
#chat table .tool-bar {
height: 25px;
background-color: #94CADF;
}

#chat table .tool-bar select {
float: left;
}

#chat table .tool-bar select.family {
width: 45px;
*width: 55px;
}

#chat table .tool-bar div {
width: 17px;
height: 16px;
float: left;
cursor: pointer;
margin-right: 2px;
margin-top: 1px;
*margin-top: 2px;
background: transparent url("../images/tb-sprite.gif") no-repeat scroll 0 0;
}

#chat table .tool-bar .color {
margin-left: 2px;
background-position: -159px 0;
}
#chat table .tool-bar .bold {
/*background-position: 0 0;*/
}
#chat table .tool-bar .italic {
background-position: -18px 0;
}
#chat table .tool-bar .underline {
background-position: -32px 0;
}
#chat table .tool-bar .face {
margin: 2px 0 0 3px;
background-image: url("../images/facehappy.gif");
}
#chat table .tool-bar .history {
background-image: none;
width: 60px;
float: right;
margin-top: 3px;
font-size: 12px;
display: none;
}
/* ###### 表情 ###### */
#chat #face {
border: 1px solid black;
width: 275px;
*width: 277px;
position: relative;
left: 8px;
top: -370px;
_top: -359px;
z-index: 3;
display: none;
}

#chat #face img {
border: 1px solid #ccc;
border-right: none;
border-bottom: none; 
cursor: pointer;
}

#send {
width: 90px;
height: 25px;
}
#close {
width: 40px;
height: 25px;
}

.chat-message {
position: absolute; 
bottom: 0; 
left: 0; 
width: 100%; 
height: 25px; 
background-color: #fcfcfc;
}

.no-msg, .have-msg {
cursor: pointer; 
float: right; 
margin: 5px 5px 0 0;
}

6、web.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>Jabber HTTP Binding Servlet</servlet-name>
<servlet-class>org.jabber.JabberHTTPBind.JHBServlet</servlet-class>
<!-- 
<init-param>
<param-name>debug</param-name>
<param-value>1</param-value>
</init-param>
 -->
</servlet>

<servlet-mapping>
<servlet-name>Jabber HTTP Binding Servlet</servlet-name>
<url-pattern>/JHB/</url-pattern>
</servlet-mapping>

<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

至此，这个应用的全部代码已经贴出来，如果你按照我这边的结构形式应该是可以完成这个聊天应用的。如果你有什么问题或想法，欢迎你给我留言或评论！

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[置顶] JavaScript/jQuery、HTML、CSS 构建 Web IM 远程及时聊天通信程序

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