package test2;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class MainServlet
extends HttpServlet {
private static final String CONTENT_TYPE = "text/html; charset=GBK";
//Initialize global variables
public void init() throws ServletException {
}
//Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
response.setContentType(CONTENT_TYPE);
PrintWriter out = response.getWriter();
request.setCharacterEncoding("gbk");
String username = request.getParameter("username"); //获取输入的昵称
username = username == null ? "" : username; //防止空异常
if (!username.equals("")) {
HttpSession s = request.getSession(); //创建一个会话
s.setAttribute("username", username); //更新昵称名单
Vector vec = (Vector)this.getServletContext().getAttribute("userlist"); //创建一个集合
if (vec == null) {
vec = new Vector(); //新建一个新集合
}
if (!vec.contains(username)) {
vec.add(username);
this.getServletContext().setAttribute("userlist", vec); //更新昵称用户名
//框架
out.println("<html>");
out.println("<head><title>MainServlet</title></head>");
out.println("<frameset rows=4*,1*>");//两行
out.println("<frameset cols=4*,1*>");
out.println("<frame src='leftservlet'>");//两列
out.println("<frame src='rightservlet'>");
out.println("</frameset>");
out.println("<frame src='bottomservlet'>");//底部
out.println("</frameset>");
out.println("</html>");
}
else {
out.println("用户已经 存在 ");
}
}
else {
out.println("用户名不能为空 ！");
}
out.close();
}
//Process the HTTP Post request
public void doPost(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
doGet(request, response);
}
//Clean up resources
public void destroy() {
}
}
聊天系统-聊天管理系统
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2008-09-11
20:15:07
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聊天程序.rar （19个子文件） 
聊天程序 Tomcat work WebModule1 
tldCache.ser 44B webapps Servlet.library 227B test2.jpx 8KB WebModule1 WEB-INF web.xml 1KB classes test2 RightServlet.class 2KB LeftServlet.class 2KB MainServlet.class 3KB BottomServlet.class 3KB
login.html 322B bak WebModule1 WEB-INF test2 src test2 BottomServlet.java 2KB LeftServlet.java 1KB RightServlet.java 1KB MainServlet.java 2KB test2.jpx.local 3KB classes package cache test2.dep2 7KB test2 RightServlet.class 2KB LeftServlet.class 2KB MainServlet.class 3KB BottomServlet.class 3KB
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