chat_listuser.java

来自「jsp 应用开发详解源代码 电子工业出版社 包含书中个源代码」· Java 代码 · 共 48 行

JAVA
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package ec;import javax.servlet.*;import javax.servlet.http.*;import java.io.*;import java.util.*;public class chat_listuser 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();    out.println("<html>");    out.println("    <head>");    out.println("<title>聊天室用户列表</title>");    out.println("</head>");    out.println("<body bgcolor=\"#CCCC99\">");    out.println("<b><font size=\"+2\" color=\"#000033\">blueriver</font></b><br>");    out.println("<b><font color=\"#000033\" size=\"+3\">聊天室</font></b><br>");    out.println("<font color=\"#FF0033\"><b>总人数:</b></font>");    out.println("<font color=\"#0000FF\" size=\"2\"><b> ");    Vector tempuser=(Vector)getServletContext().getAttribute("chatUser");    out.println(tempuser.size());    out.println("</font></b><br><br><br>");    out.println("<b> <font color=\"red\" size=\"2\"> 用户列表: </font><br>");    out.println("<font size=\"2\" color=\"#0000FF\">");    for (int i=0;i<tempuser.size();i++)    {            out.println(tempuser.elementAt(tempuser.size()-i-1).toString());            out.println("<br>");    }    out.println("</font></b>");    out.println("<br>");    out.println("</body>");    out.println("</html>");  }  /**Clean up resources*/  public void destroy() {  }}

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