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客户端主要是指用户使用的浏览器。客户端程序主要由Javascript来实现功能布局与用户的动态交互。客户端样式需要与各网站独立，不能产生样式上的冲突，因此对网站样式的设置也需要特别注册。对样式表的加载也需根据需要动态加载，样式里若用到图片的，需要使用完整的URL路径，即要指名调用服务器的域名。

Clients mainly refers to the user 's browser. Mainly by Javascript client program to achieve functional layout of the dynamic interaction with the user . Client needs with various websites independent style , the style can not produce a conflict , so the site style settings are also required special registration . Load the stylesheet also need to be dynamically loaded, the styles to be used if the pictures , you need to use the full URL path , that is, to call the server's domain name .

客户端在加载并显示完成系统功能窗口后，开始加载在线用户列表，并每隔3分钟向服务器发送更新在线用户列表的请求。用户列表加载完成后，开始每隔一定的时间（如30-50ms）向服务器发送读取通讯信息的请求，若返回的信息列表不为空，则对应信息发送者的头像闪动，或者自动弹出对话窗口显示收到的信息。

Client to complete the system functions to load and display window, start loading the online user list , and every three minutes to send updates to the server list of online users requests. User Lists loading is complete, start at regular intervals ( such as 30-50ms) communications sent to the server reads the request for information , the information returned if the list is not empty , then the corresponding sender 's picture flashing , or automatically pop up dialog window displays the information received .

客户端与服务器的数据交互主要通过Ajax实现，普通的Ajax不支持网站跨域访问，即当前网站不允许直接访问其它网站并操作其数据，因此若为跨域读取数据，需要通过动态加载Javascript脚本文件来实现，这在使用上有比较大的难度。

Client and server data interaction achieved mainly through Ajax , Ajax does not support the common cross-domain access sites that the current site does not allow direct access to other sites and manipulate their data , so if the read data across domains , you need Javascript via dynamic loading script file to achieve this in the use of a relatively large degree of difficulty.

The system uses JAVA development, server-side operating system is XP, the client can use IE6 later IE, FIREFOX3.0 other browsers .

From the functional aspects of the system , the main site registration, check online user list, user registration, user login, user rename, add friends, show your friends list, the user to communicate with each other functions. Which need to use the database entry, query , modify, and delete functions ; Secondly , in order to secure communication between users , but also need to provide some data encryption mechanism .

Each need to add " instant messaging " site will need to register on the site and apply the system function code , the application to get the code later , attached to the inside pages to your site using instant messaging capabilities.

Website Registration required to fill in the user name , password, contact information, website name, website address , website registration numbers , also select the type and location of the site . Click OK to register as webmaster . Web site owners can apply after login code, a webmaster can apply for multiple sites code, but a site can only apply once.

Users access the system functions plus a code page, the current user's information automatically added to the system's online user list , and displays the current page to access a list of all online users .

User registration , enter the login name and password to log into the system system will automatically load the login is successful buddy list .
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