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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
view sourceprint?
<%@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
view sourceprint?
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
view sourceprint?
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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