logout.jsp

一个使用jdbc存储和调用大对象（比如图片等）的例子

<% 
String logout=(String)request.getParameter("logout");
if (logout.equals("yes")) {	
	synchronized (application) {
		Vector UserName=null;  
		UserName= (Vector)application.getAttribute("UserName");
		UserName.remove(session.getValue("Name"));
	}
	
	synchronized (application) {
		String Name = (String) session.getValue("Name");
		Vector outMessage=null;	  
		outMessage= (Vector)application.getAttribute("Message");
		if(outMessage==null) 
		outMessage= new Vector(30,10);
		String outstr="系统公告：<font color=blue>"+Name+"</font>依依不舍的离开了聊天室";
		String str1="no";	
		String systemSpeak = "yes";		
		outMessage.addElement(str1); 
		outMessage.addElement(Name);
		outMessage.addElement(str1);
		outMessage.addElement(outstr);
		outMessage.addElement(systemSpeak);
		outMessage.addElement(str1);
		application.setAttribute("Message", outMessage);
		//session.destroy("Name");                
		%>
		<script language="JavaScript">
			window.close();
		</script>  
		<%
	}	
}
%>