📄 chatservlet.java
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/*
* Created on 2007-9-7
*
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
*/
package homework;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Vector;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author zhaojy
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
public class chatServlet extends HttpServlet {
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
ServletContext con=this.getServletContext();
PrintWriter out=response.getWriter();
String name=request.getParameter("name");
String mess=request.getParameter("message");
Vector v=(Vector)con.getAttribute("MessList");
if(v==null) { v=new Vector();con.setAttribute("MessList",v);}
v.add(name+mess);
out.println("<html>");
out.println("<body>");
//
out.println("<font size=\"5\">");
for(int i=0;i<v.size();i++){
out.println((String)v.get(i)+"<br>");
}
out.println("</font>");
request.getRequestDispatcher("/chat.html").include(request,response);
out.println("</body>");
out.println("</html>");
out.close();
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
doGet(request,response);
}
}
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