資源簡介
聊天室的基本功能就是聊天，其他功能都是對基本功能的一個強化。本章中的聊天室主要包括以下功能。
? 用戶登錄，包括驗證用戶是否在線。
? 實時顯示在線人員列表及在線人數。
? 用戶發言，包括選擇表情和字體顏色功能。
? 安全退出聊天室。
代碼片段和文件信息
/*
?*?To?change?this?template?choose?Tools?|?Templates
?*?and?open?the?template?in?the?editor.
?*/
package?com.wgh.filter;
import?java.io.IOException;
import?javax.servlet.*;
public?class?CharacterEncodingFilter?implements?Filter{
????protected?String?encoding?=?null;
????protected?FilterConfig?filterConfig?=?null;
????public?void?init（FilterConfig?filterConfig）?throws?ServletException?{
????????this.filterConfig?=?filterConfig;
????????this.encoding?=?filterConfig.getInitParameter（“encoding“）;
????}
????public?void?doFilter（ServletRequest?request?ServletResponse?response?FilterChain?chain）?throws?IOException?ServletException?{
????????if?（encoding?!=?null）?{
????????????request.setCharacterEncoding（encoding）;
????????????response.setContentType（“text/html;?charset=“+encoding）;
????????}
????????chain.doFilter（request?response）;
????}
????public?void?destroy（）?{
????????this.encoding?=?null;
????????this.filterConfig?=?null;
????}
}
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2014-07-29?07:35??源程序\
?????文件??????????69??2009-12-26?09:27??源程序\content.jsp
?????目錄???????????0??2014-07-29?07:35??源程序\CSS\
?????文件?????????960??2009-12-26?09:27??源程序\CSS\st
?????目錄???????????0??2014-07-29?07:35??源程序\images\
?????文件???????12633??2009-12-26?09:27??源程序\images\bg.jpg
?????文件????????9685??2009-12-26?09:27??源程序\images\bottom.jpg
?????文件???????11620??2009-12-26?09:27??源程序\images\button.jpg
?????文件??????115360??2009-12-26?09:27??源程序\images\login.jpg
?????文件???????37953??2009-12-26?09:27??源程序\images\main_bj.jpg
?????文件??????166293??2009-12-26?09:27??源程序\images\top.jpg
?????文件????????1178??2009-12-26?09:27??源程序\index.jsp
?????目錄???????????0??2014-07-29?07:35??源程序\JS\
?????文件????????1490??2009-12-26?09:27??源程序\JS\AjaxRequest.js
?????文件?????????125??2009-12-26?09:27??源程序\leave.jsp
?????文件????????1188??2009-12-26?09:27??源程序\login.jsp
?????文件?????????149??2009-12-26?09:27??源程序\login_ok.jsp
?????文件????????7297??2009-12-26?09:27??源程序\main.jsp
?????目錄???????????0??2014-07-29?07:35??源程序\me
?????文件??????????39??2009-12-26?09:24??源程序\me
?????文件?????????911??2009-12-26?09:27??源程序\online.jsp
?????文件?????????311??2009-12-26?09:27??源程序\safe.jsp
?????文件?????????129??2009-12-26?09:27??源程序\send.jsp
?????目錄???????????0??2014-07-29?07:35??源程序\src\
?????目錄???????????0??2014-07-29?07:35??源程序\src\com\
?????目錄???????????0??2014-07-29?07:35??源程序\src\com\wgh\
?????目錄???????????0??2014-07-29?07:35??源程序\src\com\wgh\filter\
?????文件?????????959??2009-12-26?09:33??源程序\src\com\wgh\filter\CharacterEncodingFilter.java
?????目錄???????????0??2014-07-29?07:35??源程序\src\com\wgh\model\
?????文件?????????729??2009-12-26?09:34??源程序\src\com\wgh\model\UserInfo.java
?????目錄???????????0??2014-07-29?07:35??源程序\src\com\wgh\servlet\
............此處省略18個文件信息
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