JSP留言栏

第三发作业

先上效果图

一如既往贴贴代码水过去，原谅哈，目前没什么时间，暑假发的博，肯定详解

功能就是：留言，留言字数到达上限会清除留言栏内容，上限为100000字

tellMe.jsp  (HTML界面代码)

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>



  
  
  
  
  

  
		 
		
		

		tell me content
		

		
		

		
		

		

		查看留言
	
 
  

逻辑处理页面

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>



  
  
  
  
  	<%
  		request.setCharacterEncoding("utf-8");
  		String n = request.getParameter("name");
  		String t =request.getParameter("title");
  		String c =request.getParameter("content");
  		
  		if(application.getAttribute("message") != null){
  			application.setAttribute("message",  (String)application.getAttribute("message") + "\n" + n + " 留言： " + "\n" + t +" : " + c  + "\n"  );
  		}else{
  			application.setAttribute("message",  n + " 留言： " + "\n" + t +" : " + c  + "\n");
  		}
  		out.println(n + " : 留言成功,3秒后返回留言界面" );
  		response.setHeader("Refresh", "3;tellMe.jsp ");
  		
  	 %>
	  	 
  

留言栏页

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>



  
    
    
    
    
	
	
	    
	
	
	
		
	
  
  
  
  
  		 	
留言栏
  		 	  		 	<%
  		 			request.setCharacterEncoding("utf-8");
  		 			String  m = (String )application.getAttribute("message");
  		 			out.print(m);
  		 			if(m.length() > 1000000000){
  		 				application.setAttribute("message", "清屏");
  		 			}
  		 	%>