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📄 fresh1.jsp

📁 JSP+AJAX开发的聊天室(毕业设计)
💻 JSP
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<%@ page import="java.util.*"%>
<%@ page import="java.util.Vector"%>
<%@ page import="java.io.FileInputStream" %>
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<html>
<head>
<title>
</title>
</head>
<body bgcolor="#FFF7DD">
<%! int maxMessage=100;
    int lessMessage=50;
%>
<%
 String message="";
   if(session.getAttribute("load")!=null)
  {
   int startAt=Integer.parseInt(session.getAttribute("load").toString());
   Calendar ca = Calendar.getInstance();
  int m=ca.get(Calendar.MINUTE);
  getServletContext().setAttribute(session.getAttribute("username").toString(),Integer.toString(m));
  Vector tempVector=(Vector)getServletContext().getAttribute("chatmsg");
  if(tempVector!=null)
    {
  session.setAttribute("load",Integer.toString(tempVector.size()));
  if(startAt>tempVector.size()){
	startAt=startAt-maxMessage+lessMessage-1;
	}
   
  for(int i=startAt;i<=tempVector.size()-1;i++)
        {

    message=tempVector.elementAt(i).toString()+message;
 
       }
    }  
  }
else{
	session.setAttribute("load","0");
  }
  response.setContentType("text/html");
  ServletOutputStream sout=response.getOutputStream();
  FileInputStream str=new FileInputStream(message);
  byte b[]=new byte[1024];
    for(int i=str.read(b);i!=-1;)
    {
      sout.write(b);
      i=str.read(b);
     }
   sout.flush();
   sout.close();
   str.close();
%>
</body>
</html>

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