📄 chat_leavechat.java

📁 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

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package ec;import javax.servlet.*;import javax.servlet.http.*;import java.io.*;import java.util.*;public class chat_leavechat 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();    HttpSession session=request.getSession(true);    out.println("<html>");    out.println("<head>");    out.println("<title>离开啦</title>");    out.println("</head>");    out.println("<body>");    String user=(String)session.getAttribute("username");    Vector temp=(Vector)getServletContext().getAttribute("chatUser");    temp.removeElement(user);    getServletContext().setAttribute("chatUser",temp);    temp=(Vector)getServletContext().getAttribute("chatMsg");    temp.addElement("<font color='#0000FF'  size='2'>blueriver管理员通告:");    temp.addElement(user+"离开了本聊天室,欢迎下次再来...<br></font>");    getServletContext().setAttribute("chatMsg",temp);    out.println("<br>");    out.println("<center>真诚感想您的光临！！！</center><br>");    out.println("<center>欢迎下次再来！！！</center><br>");    out.println("<center><a href=\"javascript:window.close();\">关闭窗口！！！</a></center>");    out.println("</body>");    out.println("</html>");  }  /**Clean up resources*/  public void destroy() {  }}

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