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云代码 - jsp代码库

jsp留言本 （基于Javabean，非数据库版）

2012-10-08 作者： 小蜜锋举报

[jsp]代码库

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

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
	<head>
		<base href="<%=basePath%>">
		<title>留言本 - 无数据库版</title>
		<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
		<style type="text/css">
<!--
textarea {
	FONT: 12px Tahoma;
	COLOR: #333333;
	margin-top: 3px;
	margin-bottom: 3px;
}

.input1 {
	width: 300px;
	height: 25px;
	margin-top: 3px;
	margin-bottom: 3px;
}

.input2 {
	width: 150px;
	height: 25px;
	margin-top: 3px;
	margin-bottom: 3px;
}

.submit1 {
	width: 50px;
	border: #CCCCCC solid 1px;
	height: 30px;
	background: #FFFFFF
}

#form1 tr th {
	text-align: right;
}

input {
	text-align: left;
}

body {
	font-family: "微软雅黑", Verdana, sans-serif, "宋体";
	color: #300;
	margin-right: auto;
	margin-left: auto;
	text-align: center;
	border: 1px solid #333;
}

.mybutton {
	width: 70px;
	height: 25px;
	margin-top: 5px;
	margin-bottom: 5px;
	text-align: center;
}

h1 {
	color: #333;
	font-weight: bold;
	font-size: 24px;
	margin-bottom: 25px;
}

#message div .name {
	float: right;
	margin-right: 10px;
	width: 100px;
}

#message .row {
	width: 500px;
	margin-right: auto;
	margin-left: auto;
	text-align: left;
	font-size: 10px;
	font-family: "微软雅黑", Verdana, sans-serif, "宋体";
	border-left-width: 5px;
	border-left-style: solid;
	border-left-color: #999;
	margin-bottom: 10px;
	background-color: #f5f5f5;
}

#message .row .time {
	float: right;
}

#message .row .msg {
	text-indent: 2em;
	font-size: 12px;
	margin-top: 2px;
	border-bottom-width: 1px;
	border-bottom-style: dashed;
	border-bottom-color: #FFF;
	font-family: "微软雅黑", Verdana, sans-serif, "宋体";
	font-weight: bold;
}

#message {
	margin-bottom: 50px;
}
-->
</style>
		<script>
	function addCheck() {
		var name = document.getElementById("name").value;
		var msg = document.getElementById("msg").value;

		if (name == "") {
			alert("姓名不能为空!")
			document.getElementById("name").focus();
			return false;
		}
		if (msg == "") {
			alert("留言不能为空!")
			document.getElementById("title").focus();
			return false;
		}

	}
</script>
	</head>

	<body>
		<h1>
			留言本（无数据库版）
		</h1>
		<div id="message">
			<%
				//输出所有留言
				MessageList messageList = (MessageList) application
						.getAttribute("MessageList");
				if (messageList == null) {
					out.println("留言本是空的！");
				} else {
					Iterator iterator = messageList.get().iterator();
					while (iterator.hasNext()) {
						String[] row = (String[]) iterator.next();
			%>
			<div class="row">
				<div class="msg">
					<%=row[1]%></div>
				<div class="time">
					<%=row[2]%>
				</div>
				<div class="name">
					姓名：<%=row[0]%>
				</div>
			</div>
			<%
				}
				}
			%>
		</div>
		<table width="500" align="center" cellpadding="2" cellspacing="0">
			<form name="form1" id="form1"
				action="<%=basePath%>servlet/AddMessage" method="post"
				onSubmit="javascript: return addCheck()">
				<tr>
					<th width="70" align="right">
						姓名：
					</th>
					<td width="280" align="left">
						<input name="name" type="text" class="input2" id="name">
					</td>
				</tr>
				<tr>
					<th>
						<span class="STYLE1">留言</span>：
					</th>
					<td>
						<textarea name="msg" id="content" cols="60" rows="5"></textarea>
					</td>
				</tr>
				<tr>
					<td colspan="2" align="center">
						<input type="submit" name="submit" id="submit" value="提交留言"
							class="mybutton" onsubmit="javascript:return addCheck()">
						&nbsp;
						<input type="reset" name="reset" id="reset" value="重新填写"
							class="mybutton">
					</td>
				</tr>
			</form>
		</table>
	</body>
</html>


AddMessage.java 
package com.demo;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 添加留言
 * 
 * @author Feng
 * 
 */
public class AddMessage extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		request.setCharacterEncoding("utf-8");

		ServletContext servletContext = request.getSession()
				.getServletContext();
		MessageList messageList = (MessageList) servletContext
				.getAttribute("MessageList");
		if (messageList == null) {
			messageList = new MessageList();
		}

		SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		String currentTime = formatter.format(new Date());

		String name = request.getParameter("name");
		String msg = request.getParameter("msg");
		String time = currentTime.toString();

		messageList.add(name, msg, time);

		servletContext.setAttribute("MessageList", messageList);

		response.sendRedirect(request.getContextPath() + "/index.jsp");

	}
}

MessageList.java
package com.demo;

import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import com.sun.org.apache.regexp.internal.recompile;

/**
 * 留言列表
 * 
 * @author Feng
 * 
 */
public class MessageList {

	private List<String[]> messageList = new ArrayList<String[]>();

	/**
	 * 添加留言
	 * 
	 * @param name
	 * @param msg
	 * @param time
	 */
	public void add(String name, String msg, String time) {

		String[] message = new String[3];

		message[0] = name;
		message[1] = msg;
		message[2] = time;

		this.messageList.add(message);
	}

	/**
	 * 获取全部留言
	 * 
	 * @return
	 */
	public List<String[]> get() {

		return this.messageList;
	}

}




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