📄 landingchat.java
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package pchat;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class LandingChat 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("GB2312");
String netname = null;
netname = request.getParameter("txtName");
// netname = new String(netname.getBytes("ISO-8859-1"), "GB2312");
if (netname.equals("")) {
out.println("<center><h1>请输入角色名!!!</h1></center>");
} else {
Vector cnet = (Vector)this.getServletContext().getAttribute(
"userArray");
if (cnet == null) {
cnet = new Vector();
}
if (cnet.contains(netname)) {
response.sendRedirect("Landing.html");
} else {
cnet.add(netname);
this.getServletContext().setAttribute("userArray", cnet);
}
out.println("<html>");
out.println("<frameset rows='10%,70%,*'>");
out.println("<frame src=/ChatWeb/message>");
out.println("<frame src=/ChatWeb/top>");
out.println("<frame src=/ChatWeb/chatroom?txtName=" + netname +">");
System.out.println("Landingchat:"+netname);
out.println("</frameset>");
out.println("</html>");
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() {
}
}
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