java js留言板

package com.zhh.test;

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import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

public class JB extends JFrame implements ActionListener

{

private JTextField Input1,Input2,Input3;

private JButton btnOK;

private static final String OK="计算";

private JTextField ShowAnswer;

public JB(String strTitle)

{

super(strTitle);

Container c=getContentPane();

c.setLayout(new FlowLayout());

Input1=new JTextField(4);

Input2=new JTextField(4);

Input3=new JTextField(4);

ShowAnswer=new JTextField(4);

btnOK=new JButton(OK);

c.add(new JLabel("请输入待计算的两个数据:"));

c.add(Input1);

c.add(Input2);

c.add(new JLabel("请输入计算符(1 for + ,2 for - ,3 for * ,4 for / ):"));

c.add(Input3);

c.add(new JLabel("计算结果："));

c.add(ShowAnswer);

c.add(btnOK);

btnOK.addActionListener(this);

this.addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent e)

{

System.exit(0);

}

});

this.setSize(310,100);

this.setVisible(true);

}

public static void main(String[] args)

{

new JB("JButtonTest Testing!!!");

}

public void actionPerformed(ActionEvent e){

int num4 = 0;

int num1=Integer.parseInt(Input1.getText());

int num2=Integer.parseInt(Input2.getText());

int num3=Integer.parseInt(Input3.getText());

if(num3==1){ num4=num1+num2 ;}

if(num3==2){ num4=num1-num2 ;}

if(num3==3){ num4=num1*num2 ;}

if(num3==4){ num4=num1/num2 ;}

ShowAnswer.setText(String.valueOf(num4));

}

}

求jsp编写的简易留言板代码！

LOGIN.JSP

%@ page contentType="text/html;charset=gb2312"%

html

head

titleJSP+JDBC 留言管理程序――登陆/title

/head

body

center

h1留言管理范例 ―― JSP + JDBC实现/h1

hr

br

%

// 判断是否有错误信息，如果有则打印

// 如果没有此段代码，则显示时会直接打印null

if(request.getAttribute("err")!=null)

{

%

h2%=request.getAttribute("err")%/h2

%

}

%

form action="login_conf.jsp" method="post"

table width="80%"

tr

td colspan="2"用户登陆/td

/tr

tr

td用户名：/td

tdinput type="text" name="id"/td

/tr

tr

td密 码：/td

tdinput type="password" name="password"/td

/tr

tr

td colspan="2"

input type="submit" value="登陆"

input type="reset" value="重置"

/td

/tr

/table

/form

/center

/body

/html

LOGIN_CONF.JSP

%@ page contentType="text/html;charset=gb2312"%

%@ page import="java.sql.*"%

html

head

titleJSP+JDBC 留言管理程序――登陆/title

/head

body

center

h1留言管理范例 ―― JSP + JDBC实现/h1

hr

br

%!

String DBDRIVER = "oracle.jdbc.driver.OracleDriver" ;

String DBURL = "jdbc:oracle:thin:@localhost:1521:three" ;

String DBUSER = "scott" ;

String DBPASSWORD = "tiger" ;

Connection conn = null ;

PreparedStatement pstmt = null ;

ResultSet rs = null ;

%

%

// 声明一个boolean变量，用于保存用户是否合法的状态

boolean flag = false ;

// 接收参数

String id = request.getParameter("id") ;

String password = request.getParameter("password") ;

%

%

String sql = "SELECT name FROM person WHERE id=? and password=?" ;

try

{

Class.forName(DBDRIVER) ;

conn = DriverManager.getConnection(DBURL,DBUSER,DBPASSWORD) ;

pstmt = conn.prepareStatement(sql) ;

pstmt.setString(1,id) ;

pstmt.setString(2,password) ;

rs = pstmt.executeQuery() ;

if(rs.next())

{

// 用户合法

flag = true ;

// 将用户名保存在session之中

session.setAttribute("uname",rs.getString(1)) ;

}

else

{

// 保存错误信息

request.setAttribute("err","错误的用户名及密码！！！") ;

}

rs.close() ;

pstmt.close() ;

conn.close() ;

}

catch(Exception e)

{}

%

%

// 跳转

if(flag)

{

// 用户合法

%

jsp:forward page="login_success.jsp"/

%

}

else

{

// 用户非法

%

jsp:forward page="login.jsp"/

%

}

%

/center

/body

/html

LOGIN_SUCCESS.JSP

%@ page contentType="text/html;charset=gb2312"%

html

head

titleJSP+JDBC 留言管理程序――登陆/title

/head

body

center

h1留言管理范例 ―― JSP + JDBC实现/h1

hr

br

%

if(session.getAttribute("uname")!=null)

{

// 用户已登陆

%

h2登陆成功/h2

h2欢迎font color="red" size="12"

%=session.getAttribute("uname")%

/font光临MLDN留言程序/h2

h3a href="list_notes.jsp"进入留言管理页面/a/h3

%

}

else

{

// 用户未登陆，提示用户登陆，并跳转

response.setHeader("refresh","2;URL=login.jsp") ;

%

您还未登陆，请先登陆！！！br

两秒后自动跳转到登陆窗口！！！br

如果没有跳转，请按a href="login.jsp"这里/a！！！br

%

}

%

/center

/body

/html

INSERT.JSP

%@ page contentType="text/html;charset=gb2312"%

html

head

titleJSP+JDBC 留言管理程序――登陆/title

/head

body

center

h1留言管理范例 ―― JSP + JDBC实现/h1

hr

br

%

if(session.getAttribute("uname")!=null)

{

// 用户已登陆

%

form action="insert_do.jsp" method="post"

table

tr

td colspan="2"添加新留言/td

/tr

tr

td标题：/td

tdinput type="text" name="title"/td

/tr

tr

td作者：/td

tdinput type="text" name="author"/td

/tr

tr

td内容：/td

tdtextarea name="content" cols="30" rows="6"/textarea/td

/tr

tr

td colspan="2"

input type="submit" value="添加"

input type="reset" value="重置"

/td

/tr

/table

/form

h3a href="list_notes.jsp"回到留言列表页/a/h3

%

}

else

{

// 用户未登陆，提示用户登陆，并跳转

response.setHeader("refresh","2;URL=login.jsp") ;

%

您还未登陆，请先登陆！！！br

两秒后自动跳转到登陆窗口！！！br

如果没有跳转，请按a href="login.jsp"这里/a！！！br

%

}

%

/center

/body

/html

INSERT_DO.JSP

%@ page contentType="text/html;charset=gb2312"%

%@ page import="java.sql.*"%

html

head

titleJSP+JDBC 留言管理程序――登陆/title

/head

body

center

h1留言管理范例 ―― JSP + JDBC实现/h1

hr

br

%

// 进行乱码处理

request.setCharacterEncoding("GB2312") ;

%

%

if(session.getAttribute("uname")!=null)

{

// 用户已登陆

%

%!

String DBDRIVER = "oracle.jdbc.driver.OracleDriver" ;

String DBURL = "jdbc:oracle:thin:@localhost:1521:three" ;

String DBUSER = "scott" ;

String DBPASSWORD = "tiger" ;

Connection conn = null ;

PreparedStatement pstmt = null ;

%

%

// 声明一个boolean变量

boolean flag = false ;

// 接收参数

String title = request.getParameter("title") ;

String author = request.getParameter("author") ;

String content = request.getParameter("content") ;

%

%

// 现在note表中的主键是sequence生成

String sql = "INSERT INTO note VALUES(note_sequ.nextVal,?,?,?)" ;

try

{

Class.forName(DBDRIVER) ;

conn = DriverManager.getConnection(DBURL,DBUSER,DBPASSWORD) ;

pstmt = conn.prepareStatement(sql) ;

pstmt.setString(1,title) ;

pstmt.setString(2,author) ;

pstmt.setString(3,content) ;

pstmt.executeUpdate() ;

pstmt.close() ;

conn.close() ;

// 如果插入成功，则肯定能执行到此段代码

flag = true ;

}

catch(Exception e)

{}

%

%

response.setHeader("refresh","2;URL=list_notes.jsp") ;

if(flag)

{

%

留言添加成功，两秒后跳转到留言列表页！！！br

如果没有跳转，请按a href="list_notes.jsp"这里/a！！！

%

}

else

{

%

留言添加失败，两秒后跳转到留言列表页！！！br

如果没有跳转，请按a href="list_notes.jsp"这里/a！！！

%

}

%

%

}

else

{

// 用户未登陆，提示用户登陆，并跳转

response.setHeader("refresh","2;URL=login.jsp") ;

%

您还未登陆，请先登陆！！！br

两秒后自动跳转到登陆窗口！！！br

如果没有跳转，请按a href="login.jsp"这里/a！！！br

%

}

%

/center

/body

/html

LIST_NOTES.JSP

%@ page contentType="text/html;charset=gb2312"%

%@ page import="java.sql.*"%

html

head

titleJSP+JDBC 留言管理程序――登陆/title

/head

body

center

h1留言管理范例 ―― JSP + JDBC实现/h1

hr

br

%

// 编码转换

request.setCharacterEncoding("GB2312") ;

if(session.getAttribute("uname")!=null)

{

// 用户已登陆

%

%!

String DBDRIVER = "oracle.jdbc.driver.OracleDriver" ;

String DBURL = "jdbc:oracle:thin:@localhost:1521:three" ;

String DBUSER = "scott" ;

String DBPASSWORD = "tiger" ;

Connection conn = null ;

PreparedStatement pstmt = null ;

ResultSet rs = null ;

%

%

// 如果有内容，则修改变量i，如果没有，则根据i的值进行无内容提示

int i = 0 ;

String sql = null;

String keyword = request.getParameter("keyword") ;

// out.println(keyword) ;

if(keyword==null)

{

// 没有任何查询条件

sql = "SELECT id,title,author,content FROM note" ;

}

else

{

// 有查询条件

sql = "SELECT id,title,author,content FROM note WHERE title like ? or author like ? or content like ?" ;

}

try

{

Class.forName(DBDRIVER) ;

conn = DriverManager.getConnection(DBURL,DBUSER,DBPASSWORD) ;

pstmt = conn.prepareStatement(sql) ;

// 如果存在查询内容，则需要设置查询条件

if(keyword!=null)

{

// 存在查询条件

pstmt.setString(1,"%"+keyword+"%") ;

pstmt.setString(2,"%"+keyword+"%") ;

pstmt.setString(3,"%"+keyword+"%") ;

}

rs = pstmt.executeQuery() ;

%

form action="list_notes.jsp" method="POST"

请输入查询内容：input type="text" name="keyword"

input type="submit" value="查询"

/form

h3a href="insert.jsp"添加新留言/a/h3

table width="80%" border="1"

tr

td留言ID/td

td标题/td

td作者/td

td内容/td

td删除/td

/tr

%

while(rs.next())

{

i++ ;

// 进行循环打印，打印出所有的内容，以表格形式

// 从数据库中取出内容

int id = rs.getInt(1) ;

String title = rs.getString(2) ;

String author = rs.getString(3) ;

String content = rs.getString(4) ;

if(keyword!=null)

{

// 需要将数据返红

title = title.replaceAll(keyword,"font color=\"red\""+keyword+"/font") ;

author = author.replaceAll(keyword,"font color=\"red\""+keyword+"/font") ;

content = content.replaceAll(keyword,"font color=\"red\""+keyword+"/font") ;

}

%

tr

td%=id%/td

tda href="update.jsp?id=%=id%"%=title%/a/td

td%=author%/td

td%=content%/td

tda href="delete_do.jsp?id=%=id%"删除/a/td

/tr

%

}

// 判断i的值是否改变，如果改变，则表示有内容，反之，无内容

if(i==0)

{

// 进行提示

%

tr

td colspan="5"没有任何内容！！！/td

/tr

%

}

%

/table

%

rs.close() ;

pstmt.close() ;

conn.close() ;

}

catch(Exception e)

{}

%

%

}

else

{

// 用户未登陆，提示用户登陆，并跳转

response.setHeader("refresh","2;URL=login.jsp") ;

%

您还未登陆，请先登陆！！！br

两秒后自动跳转到登陆窗口！！！br

如果没有跳转，请按a href="login.jsp"这里/a！！！br

%

}

%

/center

/body

/html

UPDATE.JSP

%@ page contentType="text/html;charset=gb2312"%

%@ page import="java.sql.*"%

html

head

titleJSP+JDBC 留言管理程序――登陆/title

/head

body

center

h1留言管理范例 ―― JSP + JDBC实现/h1

hr

br

%

if(session.getAttribute("uname")!=null)

{

// 用户已登陆

%

%!

String DBDRIVER = "oracle.jdbc.driver.OracleDriver" ;

String DBURL = "jdbc:oracle:thin:@localhost:1521:three" ;

String DBUSER = "scott" ;

String DBPASSWORD = "tiger" ;

Connection conn = null ;

PreparedStatement pstmt = null ;

ResultSet rs = null ;

%

%

// 接收参数

int id = 0 ;

try

{

id = Integer.parseInt(request.getParameter("id")) ;

}

catch(Exception e)

{}

%

%

// 如果有内容，则修改变量i，如果没有，则根据i的值进行无内容提示

int i = 0 ;

String sql = "SELECT id,title,author,content FROM note WHERE id=?" ;

try

{

Class.forName(DBDRIVER) ;

conn = DriverManager.getConnection(DBURL,DBUSER,DBPASSWORD) ;

pstmt = conn.prepareStatement(sql) ;

// 设置查询条件

pstmt.setInt(1,id) ;

rs = pstmt.executeQuery() ;

%

%

if(rs.next())

{

i++ ;

// 进行循环打印，打印出所有的内容，以表格形式

// 从数据库中取出内容

id = rs.getInt(1) ;

String title = rs.getString(2) ;

String author = rs.getString(3) ;

String content = rs.getString(4) ;

%

form action="update_do.jsp" method="post"

table

tr

td colspan="2"添加新留言/td

/tr

tr

td标题：/td

tdinput type="text" name="title" value="%=title%"/td

/tr

tr

td作者：/td

tdinput type="text" name="author" value="%=author%"/td

/tr

tr

td内容：/td

tdtextarea name="content" cols="30" rows="6"%=content%/textarea/td

/tr

tr

td colspan="2"

input type="hidden" name="id" value="%=id%"

input type="submit" value="更新"

input type="reset" value="重置"

/td

/tr

/table

/form

%

}

else

{

%

没有发现，要更新的内容！！br

请确认要更新的留言是否存在！！br

%

}

%

%

rs.close() ;

pstmt.close() ;

conn.close() ;

}

catch(Exception e)

{}

%

h3a href="list_notes.jsp"回到留言列表页/a/h3

%

}

else

{

// 用户未登陆，提示用户登陆，并跳转

response.setHeader("refresh","2;URL=login.jsp") ;

%

您还未登陆，请先登陆！！！br

两秒后自动跳转到登陆窗口！！！br

如果没有跳转，请按a href="login.jsp"这里/a！！！br

%

}

%

/center

/body

/html

UPDATE_DO.JSP

%@ page contentType="text/html;charset=gb2312"%

%@ page import="java.sql.*"%

html

head

titleJSP+JDBC 留言管理程序――登陆/title

/head

body

center

h1留言管理范例 ―― JSP + JDBC实现/h1

hr

br

%

// 进行乱码处理

request.setCharacterEncoding("GB2312") ;

%

%

if(session.getAttribute("uname")!=null)

{

// 用户已登陆

%

%!

String DBDRIVER = "oracle.jdbc.driver.OracleDriver" ;

String DBURL = "jdbc:oracle:thin:@localhost:1521:three" ;

String DBUSER = "scott" ;

String DBPASSWORD = "tiger" ;

Connection conn = null ;

PreparedStatement pstmt = null ;

%

%

// 声明一个boolean变量

boolean flag = false ;

// 接收参数

String title = request.getParameter("title") ;

String author = request.getParameter("author") ;

String content = request.getParameter("content") ;

int id = 0 ;

try

{

id = Integer.parseInt(request.getParameter("id")) ;

}

catch(Exception e)

{}

%

%

// 更新note表中的数据

String sql = "UPDATE note set title=?,author=?,content=? WHERE id=?" ;

try

{

Class.forName(DBDRIVER) ;

conn = DriverManager.getConnection(DBURL,DBUSER,DBPASSWORD) ;

pstmt = conn.prepareStatement(sql) ;

pstmt.setString(1,title) ;

pstmt.setString(2,author) ;

pstmt.setString(3,content) ;

pstmt.setInt(4,id);

pstmt.executeUpdate() ;

pstmt.close() ;

conn.close() ;

// 如果修改成功，则肯定能执行到此段代码

flag = true ;

}

catch(Exception e)

{}

%

%

response.setHeader("refresh","2;URL=list_notes.jsp") ;

if(flag)

{

%

留言修改成功，两秒后跳转到留言列表页！！！br

如果没有跳转，请按a href="list_notes.jsp"这里/a！！！

%

}

else

{

%

留言修改失败，两秒后跳转到留言列表页！！！br

如果没有跳转，请按a href="list_notes.jsp"这里/a！！！

%

}

%

%

}

else

{

// 用户未登陆，提示用户登陆，并跳转

response.setHeader("refresh","2;URL=login.jsp") ;

%

您还未登陆，请先登陆！！！br

两秒后自动跳转到登陆窗口！！！br

如果没有跳转，请按a href="login.jsp"这里/a！！！br

%

}

%

/center

/body

/html

DELETE_DO.JSP

%@ page contentType="text/html;charset=gb2312"%

%@ page import="java.sql.*"%

html

head

titleJSP+JDBC 留言管理程序――登陆/title

/head

body

center

h1留言管理范例 ―― JSP + JDBC实现/h1

hr

br

%

if(session.getAttribute("uname")!=null)

{

// 用户已登陆

%

%!

String DBDRIVER = "oracle.jdbc.driver.OracleDriver" ;

String DBURL = "jdbc:oracle:thin:@localhost:1521:three" ;

String DBUSER = "scott" ;

String DBPASSWORD = "tiger" ;

Connection conn = null ;

PreparedStatement pstmt = null ;

%

%

// 接收参数

int id = 0 ;

try

{

id = Integer.parseInt(request.getParameter("id")) ;

}

catch(Exception e)

{}

%

%

String sql = "DELETE FROM note WHERE id=?" ;

boolean flag = false ;

try

{

Class.forName(DBDRIVER) ;

conn = DriverManager.getConnection(DBURL,DBUSER,DBPASSWORD) ;

pstmt = conn.prepareStatement(sql) ;

// 设置删除条件

pstmt.setInt(1,id) ;

pstmt.executeUpdate() ;

pstmt.close() ;

conn.close() ;

flag = true ;

}

catch(Exception e)

{}

%

%

response.setHeader("refresh","2;URL=list_notes.jsp") ;

if(flag)

{

%

留言删除成功，两秒后跳转到留言列表页！！！br

如果没有跳转，请按a href="list_notes.jsp"这里/a！！！

%

}

else

{

%

留言删除失败，两秒后跳转到留言列表页！！！br

如果没有跳转，请按a href="list_notes.jsp"这里/a！！！

%

}

%

%

}

else

{

// 用户未登陆，提示用户登陆，并跳转

response.setHeader("refresh","2;URL=login.jsp") ;

%

您还未登陆，请先登陆！！！br

两秒后自动跳转到登陆窗口！！！br

如果没有跳转，请按a href="login.jsp"这里/a！！！br

%

}

%

/center

/body

/html

-- 创建表

-- 用户表（登陆）、留言表

-- 删除表

DROP TABLE person ;

DROP TABLE note ;

-- 删除序列

DROP SEQUENCE note_sequ ;

-- 创建序列

CREATE SEQUENCE note_sequ ;

-- 创建person表

CREATE TABLE person

(

id varchar(20) not null primary key ,

name varchar(20) ,

password varchar(20)

) ;

-- 创建留言表

CREATE TABLE note

(

id int not null primary key , -- sequence

title varchar(20) not null ,

author varchar(20) not null ,

content varchar(50) not null

) ;

-- 插入测试数据

INSERT INTO person VALUES ('LXH','李兴华','zzzzzz') ;

INSERT INTO person VALUES ('MLDN','魔乐','mmmmmm') ;

-- 事务提交

commit ;

用Java web 做一个留言板 留言功能实现了，不知道怎么实现回复和删除留言的功能，知道的高手，请帮帮忙。

先说说回复吧：

假如:

留言表（id , text ）两个字段

回复表（ id , text parentId ）用来存放留言表id 三个字段

目前有一条留言

1001,'这是一条留言';

那么给这条留言的回复就是

1003 , '这是一条回复', 1001(这就是该留言的ID) 这样就把留言和回复关联上了

回复后点保存时，将数据传入后台，数据库做insert操作就行了

删除一样的

如果删除回复，直接传入回复的ID 即可

如果删除留言，得先判断该留言有没有回复，如果有回复，则先删除回复，在删除留言（外键约束）

网页留言板的代码

meta http-equiv="Content-Type" content="text/html;charset=gb2312"

%@ Language=VBScript %

!--#INCLUDE FILE="config.asp" --

!--#INCLUDE FILE="guest_lib.asp" --%

dim ASPBook

dim StrSQL

if not isempty(request("page")) then

Mypage=cint(Request("page"))

else

Mypage=1

end if

set ASPBook = Server.CreateObject("ADODB.Recordset")

StrSQL = "Select * from guest order by ID desc"

ASPBook.open StrSQL,conn,1,1

ASPBook.pagesize=Mypagesize

maxpages=cint(ASPBook.pagecount)

totalsize=cint(Mypagesize)

ASPBook.absolutepage=Mypage

GuestTotal=ASPBook.RecordCount

if cint(Mypage) 1 then

if cint(Mypage) maxpages then

MESSAGE("li没有你所想去的页数！/li")

Response.End

end if

end if

HEADER "显示留言"

MyMenu

%

html

head

title[ 客户留言系统 ]/title

meta http-equiv="Content-Type" content="text/html; charset=gb2312"

link rel="stylesheet" href="css/colorbird.css"

style

BODY {SCROLLBAR-FACE-COLOR: #D4D0C8; SCROLLBAR-HIGHLIGHT-COLOR: #999999; SCROLLBAR-SHADOW-COLOR: #999999; SCROLLBAR-3DLIGHT-COLOR: #FFFFFF; SCROLLBAR-ARROW-COLOR: #000000; SCROLLBAR-TRACK-COLOR: #E3E3E3; SCROLLBAR-DARKSHADOW-COLOR: #666666; }

/style

/head

body bgcolor="#FFFFFF" topmargin="0" leftmargin="0"

p align="center"a href="gb_sign.asp"

img border="0" src="IMAGES/sign.gif" alt="签写留言"/a/p

tdp align="center"font color="#000000"bfont face="Arial" size="1"Total of

font color="#ff0000"%=GuestTotal%/font messages, /font/b/font

font face="Arial"font size="1" color="#ff0000"%=MyPageSize%/fontfont size="1"

messages per page, You are on page/font/font/fontfont color="#FF0000"font size="1" face="Arial"%=cint(Mypage)%/font

%=Greeting%... font color="#000000"%PageLink%/font/p

/font

div align="right"/div/td

div align="center"

center

table width="590" border="0" cellspacing="0" cellpadding="0"

tr

td height="50"a href="gb_sign.asp"img src="IMAGES/shop.gif" alt="签写留言" width="89" height="25" border="0"/a/td

/tr

/table

table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#6699CC" width="590" height="197"

tr

td align="center" height="197"

table width="590" border="0" cellspacing="0" cellpadding="4" style="border-collapse: collapse" height="35" bgcolor="#F7F7F7"

tr

/tr

tr

/tr

/table

table cellspacing="1" border="1" width="592" height="23" style="border-collapse: collapse" cellpadding="0" bgcolor="#C6C3C6" bordercolorlight="#FFFFFF" bordercolordark="#000000" background="table.gif"

tr

td align="right" width="130" height="23"

p align="left"b

font color="#FFFFFF"留言者 :/font/b/p

/td

td align="right" width="445" height="23"

p align="left"b

font color="#FFFFFF"留言内容 :/font/b/p

/td

/tr

/table

table width="590" border="0" cellspacing="0" cellpadding="0"

%

If ASPBook.Eof or ASPBook.Bof then

Response.Write "TR"

Response.Write "TD bgcolor=" Color1 " align=center colspan=6FONT STYLE=font-size:9pt对不起，目前还没有任何留言，如要留言，请按“我要留言”图片！/FONT/TD"

else

i = 0

total = 0

do until ASPBook.Eof or total = totalsize

if i = 0 then

CColor = Color1

else

CColor = Color2

end if

%

tr bgcolor="%=CColor%"

td

table width="590" border="1" cellspacing="8" cellpadding="0" style="border-collapse: collapse" bordercolor="#111111"

tr

/tr

/table

table width="590" border="0" cellpadding="2" style="border-collapse: collapse" bordercolor="#111111" height="1"

tr

td width="137" rowspan="3" height="1" valign="top"

table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="99%" id="AutoNumber2" height="96"

tr

td width="100%" align="center" height="12"b%=ASPBook("名字")%/b/td

/tr

tr

td width="100%" align="center" height="54"%if ASPBook("性别") = "boy" then%

br

img src="images/boy.gif" alt="英俊潇洒的 %=ASPBook("名字")% 先生" align="middle" border="0"

%elseif ASPBook("性别") = "girl" then%

img src="images/girl.gif" alt="美丽又温柔的 %=ASPBook("名字")% 小姐" align="middle" border="0"

br

%end if%/td

/tr

tr

td width="100%" align="center" height="28"Form: %=ASPBook("来自")% /td

/tr

/table

/td

td width="234" height="1"font size="1"

font color="#000000" class="littel"

img src="./icons/em%=ASPBook("表情")%.gif" border="0" align="ABSCENTER"/fontfont color="#0000FF" class="littel"On:

%=ASPBook("留言日期")%/font/fontfont size="1" color="#0000FF"

/font/td

td width="212" height="1"%if ASPBook("邮件")"" then%

a href="mailto:%=ASPBook("邮件")%"

img src="images/email.gif" ALIGN="absmiddle" border="0" width="15" height="16"/a

%end if% %if ASPBook("主页")"" and ASPBook("主页")"http://" then%

a href="%=ASPBook("主页")%" Target="_blank"

img src="images/home.gif" ALIGN="absmiddle" border="0"/a

%end if% %if ASPBook("ICQ")"" then%

img src="images/icq.gif" alt="ICQ：%=ASPBook("ICQ")%" align="absmiddle" border="0" width="15" height="16"

%if ASPBook("OICQ")"" then% %end if%

a href=";%=ASPBook("OICQ")%" target="_blank"

img src="images/oicq.gif" alt="OICQ：%=ASPBook("OICQ")%" align="absmiddle" border="0" width="16" height="16"/a

%end if%

img src="images/ip.gif" alt="%=ASPBook("IP")%" align="absmiddle" border="0" width="13" height="16"

img src="images/system.gif" alt="%=ASPBook("系统")%" align="absmiddle" border="0" width="15" height="16"/td

/tr

tr

td width="450" height="14" colspan="2" valign="top"%=ASPBook("留言")% /td

/tr

tr

%if ASPBook("Reply")"" then%td width="450" height="17" colspan="2" valign="top"

font color="#FF0000"Reply :b /b/font

font color="#0000FF" class="littel" size="1"(%=ASPBook("Reply_Date")%)/fontbr

img src="./icons/em%=ASPBook("Reply_Icon")%.gif" border="0" align="ABSCENTER"%=ASPBook("Reply")%/font/td

%end if%/tr

/table

table width="590" border="0" cellspacing="0" cellpadding="0" style="border-collapse: collapse" bordercolor="#111111"

tr

td width="137" rowspan="2" /td

td width="450"/td

/tr

tr

td width="450" /td

/tr

/table

table width="590" height="24" border="0" cellpadding="0" cellspacing="1" bordercolor="#DCE8F3" bordercolorlight="#FFFFFF" bgcolor="#DCE8F3" style="border-collapse: collapse"

tr

td align="right" width="131" height="20"

p align="left" /p

/td

td align="right" width="448" height="20"

a href="gb_reply.asp?page=%=mypage%Number=%=ASPBook("ID")%"

img src="images/quote.gif" alt="回复该留言" align="absmiddle" border="0" width="16" height="16"/a

a href="gb_delete.asp?page=%=mypage%Number=%=ASPBook("ID")%"

img src="images/recycle.gif" alt="删除该留言" align="absmiddle" border="0" width="16" height="16"/a/td

/tr

/table

/td

/tr

%

ASPBook.MoveNext

i = i + 1

if i = 2 then i = 0

total = total + 1

loop

% %END IF%

/table

%COPYRIGHT%

table border="0" cellpadding="2" cellspacing="0" width="590" height="1" bgcolor="#F7F7F7" style="border-collapse: collapse" bordercolor="#FFFFFF" bordercolorlight="#FFFFFF"

tr

td width="131" height="1"

p align="center"/p

/td

td align="right" width="448" height="1"font color="#000000"%PageLink%

/font /td

/tr

/table

/td

/tr

/table

/center

/div

div align="center"

center

table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="592" id="AutoNumber1"

tr

td width="100%"

p align="center"a href="gb_sign.asp" /abr

/p

/td

/tr

/table

/center

/div

/body

/html

%

function PageLink

PageShowSize = 10

Scriptname=Request.Servervariables("script_name")

PageNextSize=int((MyPage-1)/PageShowSize)+1

Pagetpage=int((GuestTotal-1)/MyPageSize)+1

if Maxpages 1 then

if PageNextSize 1 then

PagePrev=PageShowSize*(PageNextSize-1)

Response.write "a href='" Scriptname "?page=" PagePrev "'[]/a-"

end if

if Mypage-1 0 then

Prev_Page = MyPage - 1

Response.write "a href='" Scriptname "?page=" Prev_Page "'[]/a "

end if

if maxpages=PageNextSize*PageShowSize then

PageSizeShow = PageShowSize

else

PageSizeShow = Maxpages-PageShowSize*(PageNextSize-1)

end if

for PageCounterSize=1 to PageSizeShow

PageLink = (PageCounterSize+PageNextSize*10)-10

if PageLink cint(Mypage) then

Response.write "a href='" Scriptname "?page=" PageLink "'[" PageLink "]/a "

else

Response.Write PageLink " "

end if

next

if Mypage+1 =Pagetpage then

Next_Page = MyPage + 1

Response.write "a href='" Scriptname "?page=" Next_Page "'[]/a"

end if

if maxpages PageShowSize*PageNextSize then

PageNext = PageShowSize * PageNextSize + 1

Response.write "-a href='" Scriptname "?page=" PageNext "'[]/a"

end if

else

Response.write "[1]"

end if

END function

set ASPBook=nothing

conn.Close

set conn = nothing

%

开源里有没有留言板的源代码，JAVA的

绝对开源，绝对明了的留言板，便于学习的源码

用JAVA写的留言板原代码

/*

* guestbookServlet.java

*

* */

import javax.servlet.*;

import javax.servlet.http.*;

import java.sql.*;

import java.util.Date;

/**

*

* */

public class guestbookServlet extends HttpServlet {

boolean debug=false;

String sDBDriver;

Connection conn=null;

ResultSet rs=null;

/** Initializes the servlet.

*/

public void init(ServletConfig config) throws ServletException {

super.init(config);

if(debug)

sDBDriver=new String("sun.jdbc.odbc.JdbcOdbcDriver");

else

sDBDriver=new String("org.gjt.mm.mysql.Driver");

try{

Class.forName(sDBDriver);

}

catch(java.lang.ClassNotFoundException e){

System.err.println("Driver类初始化:"+e.getMessage());

}

}

/** Destroys the servlet.

*/

public void destroy() {

}

/** Processes requests for both HTTP codeGET/code and codePOST/code methods.

* @param request servlet request

* @param response servlet response

*/

protected void processRequest(HttpServletRequest request, HttpServletResponse response)

throws ServletException, java.io.IOException {

response.setContentType("text/html;charset=gb2312");

java.io.PrintWriter out = response.getWriter();

boolean empty=true;

boolean noResult=true;

String sqlStr;

int currentPage=0;

int totalPage=0;

int reccount=0;

ResultSet myrs=null;

String username=request.getParameter("username");

String email=request.getParameter("email");

String ucontent=request.getParameter("ucontent");

String ipage=request.getParameter("ipage");

if(ipage==null||ipage.length()==0)

currentPage=1;

else

currentPage=Integer.parseInt(ipage);

if((username==null||username.length()==0)||(ucontent==null||ucontent.length()==0))empty=true;

else empty=false;

Date myDate=new Date();

//String intime=new String(String.valueOf(myDate.getYear()+1990)+String.valueOf(myDate.getMonth()));

String year=String.valueOf(myDate.getYear()+1900);

String month=String.valueOf(myDate.getMonth()+1);

if(month.length()==1)

month=new String("0"+month);

String days=String.valueOf(myDate.getDate());

if(days.length()==1)

days=new String("0"+days);

String hours=String.valueOf(myDate.getHours());

if(hours.length()==1)

hours=new String("0"+hours);

String minutes=String.valueOf(myDate.getMinutes());

if(minutes.length()==1)

minutes=new String("0"+minutes);

String intime=year+"-"+month+"-"+days+" "+hours+":"+minutes;

if(email==null||email.length()==0)

email=new String("");

if(!empty){

//username=convert(username);

//email=convert(email);

//ucontent=convert(ucontent);

sqlStr="insert into Mintegbook(Mname,Memail,Mcontent,Mtime,Mid) values("+username+","+email+","+ucontent+","+intime+",1)";

getDsnConn();

executeInsert(sqlStr);

}

sqlStr=new String("select Mname,Memail,Mcontent,Mtime from Mintegbook order by Mtime DESC");

getDsnConn();

reccount=getRecordCount("Mintegbook");

if(reccount==0)

noResult=true;

else

noResult=false;

if(!noResult){

int ipageSize=10;

totalPage=getTotalPage("Mintegbook",ipageSize);

if(currentPagetotalPage)

currentPage=totalPage;

int cursor=(currentPage-1)*ipageSize+1;

try{

myrs=executeScrollableQuery(sqlStr);

myrs.absolute(cursor);

}

catch(SQLException e){

noResult=true;

}

}

out.println("HTMLHEADTITLE我的Servlet留言板/TITLE");

out.println("META http-equiv="Content-Type" content="text/html; charset=gb2312"");

out.println("STYLE type="text/css"");

out.println("!--");

out.println(".mytext { font-family: "宋体"; font-size: 12px}");

out.println(" --");

out.println("/STYLE");

out.println("/HEAD");

out.println("BODY bgcolor="#FFFFFF" text="#000000"");

out.println("TABLE width="600" border="0" cellspacing="0" cellpadding="0" align="CENTER" class="mytext"");

out.println("TRTD height="22" | a href=""我的主页/a | 我的Servlet留言板(A href="mailto:yf188@21cn.com"川石/A制作)/TD/TR");

out.println("TRTD height="1" bgcolor="#999933"/TD/TR");

out.println("/TABLE");

out.println("BR");

out.println("TABLE width="600" border="0" cellspacing="0" cellpadding="0" align="CENTER" class="mytext"");

out.println("TRTD height="8"/TD/TR");

out.println("TRTD height="18" bgcolor="#f7f7f7"DIV align="right"");

out.println("共有 "+reccount + " 条留言 ");

out.println(" 当前第font color=#ff0000"+currentPage+"/font/共 "+totalPage+" 页 ");

if(currentPage1)

out.println(" a href=guestbookServlet?ipage=1首页/a a href=guestbookServlet?ipage="+(currentPage-1)+"上一页/a ");

else

out.println(" 首页 上一页 ");

if(currentPagetotalPage)

out.println(" a href=guestbookServlet?ipage="+(currentPage+1)+"下一页/a a href=guestbookServlet?ipage="+totalPage+"末页/a ");

else

out.println(" 下一页 末页 ");

out.println("/DIV/TD/TR");

out.println("/TABLE");

out.println("BR");

//这里是显示留言内容

if(!noResult){

String dname;

String demail;

String dcontent;

String dtime;

Date temptime;

try{

do{

dname=new String(myrs.getString("Mname"));

demail=new String(myrs.getString("Memail"));

dcontent=new String(myrs.getString("Mcontent"));

try{

dtime=new String(myrs.getObject("Mtime").toString());

}

catch(java.lang.NullPointerException e){

dtime=new String("2001-04-06 12:30");

}

if(dname==null)

dname=new String("川石");

if(demail==null)

demail=new String("yf188@21cn.com");

if(dcontent==null)

dcontent=new String("test");

if(dtime==null)

dtime=new String("2001-04-06 12:30");

dname=convert(dname);

dcontent=convert(dcontent);

//temptime=myrs.getDate("Mtime");

/*

String tempyear=String.valueOf(temptime.getYear()+1900);

String tempmonth=String.valueOf(temptime.getMonth()+1);

if(tempmonth.length()==1)

tempmonth=new String("0"+tempmonth);

String tempdays=String.valueOf(temptime.getDate());

if(tempdays.length()==1)

tempdays=new String("0"+tempdays);

String tempminute=String.valueOf(temptime.getMinutes());

if(tempminute.length()==1)

tempminute=new String("0"+tempminute);

String temphours=String.valueOf(temptime.getHours());

if(temphours.length()==1)

temphours=new String("0"+temphours);

String dtime=tempyear+" 年 "+ tempmonth +" 月 "+ tempdays +" 日 " + temphours+ " 时 "+ tempminute + " 分 ";

*/

out.println("TABLE width="600" border="0" cellspacing="0" cellpadding="4" align="CENTER" class="mytext"");

out.println("TRTD姓名 A href="mailto:"+demail+"""+dname+"/A 留言时间："+dtime+"/TD/TR");

out.println("TRTD height="10"/TD/TR");

out.println("TRTD height="10""+dcontent+"/TD/TR");

out.println("/TABLE");

out.println("HR width="600" size="1"");

}while(myrs.next());}

catch(SQLException e){

out.println("error found");

}

}

else{

out.println("还没有留言！");

}

//结束

out.println("FORM name="form1" method="post" action="guestbookServlet"");

out.println("TABLE width="600" border="0" cellspacing="0" cellpadding="4" align="CENTER" class="mytext"");

out.println("TRTD width="80"姓名:/TDTDINPUT type="text" name="username"*/TD/TR");

out.println("TRTDEmail:/TDTDINPUT type="text" name="email"*/TD/TR");

out.println("TRTD留言：/TDTDTEXTAREA name="ucontent" cols="65" rows="4"/TEXTAREA/TD/TR");

out.println("/TABLE");

out.println("TABLE width="400" border="0" cellspacing="0" cellpadding="6" align="CENTER" class="mytext"");

out.println("TRTD height="15" width="200" /TDTD /TD/TR");

out.println("TRTDDIV align="RIGHT"INPUT type="button" name="Button" value=" 提 交 " style="cursor:hand" onclick="javascript:check()"/DIV/TD");

out.println("TDINPUT type="reset" name="Submit2" value=" 重 置 "/TD/TR");

out.println("/TABLE");

out.println("/FORM");

out.println("TABLE width="400" border="0" cellspacing="0" cellpadding="4" align="CENTER" class="mytext"");

out.println("TRTD width="15" /TD/TR");

out.println("TRTDDIV align="LEFT"/DIV/TD/TR");

out.println("TRTD /TD/TR");

out.println("/TABLE");

out.println("/BODY");

out.println("/HTML");

out.println("SCRIPT language="javascript"");

out.println("function check(){");

out.println("if(form1.username.value.length1||form1.ucontent.value.length1)");

out.println("{alert(姓名和留言是必须有的!);}else{form1.submit();}}");

out.println("/SCRIPT");

out.close();

}

/** Handles the HTTP codeGET/code method.

* @param request servlet request

* @param response servlet response

*/

protected void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, java.io.IOException {

processRequest(request, response);

}

/** Handles the HTTP codePOST/code method.

* @param request servlet request

* @param response servlet response

*/

protected void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, java.io.IOException {

processRequest(request, response);

}

protected void getDsnConn(){

String sqlUrl="jdbc:mysql://10.0.0.1/你申请用户名?user=你的名字password=你的帐号";

try{

if(debug)

conn=DriverManager.getConnection("jdbc:odbc:ODBC源","用户名","密码口令");

else

conn=DriverManager.getConnection(sqlUrl);

}

catch(SQLException es){

System.err.println("和库连接时出错:"+es.getMessage());

}

}

protected void executeInsert(String sqlStr){

try{

Statement stmt=conn.createStatement();

stmt.executeUpdate(sqlStr);

}

catch(SQLException es){

System.err.println("执行插入时:"+es.getMessage());

}

}

protected void executeUpdate(String sqlStr){

try{

Statement stmt=conn.createStatement();

stmt.executeUpdate(sqlStr);

}

catch(SQLException e){

System.err.println("error in query record");

}

}

//查寻

protected ResultSet executeQuery(String sqlStr){

rs=null;

try{

Statement stmt=conn.createStatement();

rs=stmt.executeQuery(sqlStr);

}

catch(SQLException ex){

System.err.println("执行查寻出错："+ex.getMessage());

}

return rs;

}

protected ResultSet executeScrollableQuery(String sqlStr){

rs=null;

try{

Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);

rs=stmt.executeQuery(sqlStr);

}

catch(SQLException e){

System.err.println("执行动态查寻出错");

}

return rs;

}

//得到表记录总数

protected int getRecordCount(String sTableName){

rs=null;

int CountResult=0;

String sqlStr="select count(*) from "+sTableName;

try{

Statement stmt=conn.createStatement();

rs=stmt.executeQuery(sqlStr);

if(rs.next())

CountResult=rs.getInt(1);

rs=null;

stmt.close();

}

catch(SQLException ex){

System.err.println(ex.getMessage());

}

return CountResult;

}

//得到记录总页数

protected int getTotalPage(String sTableName,int iPageSize){

int totalPage;

int totalRecNum=getRecordCount(sTableName);

if(totalRecNum%iPageSize==0)

totalPage=totalRecNum/iPageSize;

else

totalPage=totalRecNum/iPageSize+1;

return totalPage;

}

protected String convert(String InputStr){

String converted=new String();

byte[] bytes;

try{

bytes=InputStr.getBytes("ISO8859-1");

converted=new String(bytes,"GB2312");

}

catch(java.io.UnsupportedEncodingException e){

System.out.print("error");

}

return converted;

}

/** Returns a short description of the servlet.

*/

public String getServletInfo() {

return "Short description";

}

}

急急急！java简单留言板

您好。我重新地帮你写了代码，完全地符合了你的图片中的界面要求、功能要求。代码如下：（解决了问题，记得给我分哦~^_^呵呵……）

import java.awt.BorderLayout;

import javax.swing.JPanel;

import javax.swing.JFrame;

import java.awt.Rectangle;

import javax.swing.JLabel;

import javax.swing.SwingConstants;

import java.awt.Font;

import javax.swing.JTextArea;

import javax.swing.JScrollBar;

import javax.swing.JScrollPane;

import javax.swing.JComboBox;

import javax.swing.JTextField;

import javax.swing.JButton;

public class Liuyb extends JFrame {

private static final long serialVersionUID = 1L;

private JPanel jContentPane = null;

private JLabel jLabel = null;

private JTextArea jTextArea = null;

private JScrollPane jScrollPane = null;

private JLabel jLabel1 = null;

private JComboBox jComboBox = null;

private JLabel jLabel2 = null;

private JTextField jTextField = null;

private JButton jButton = null;

private JButton jButton1 = null;

private JButton jButton2 = null;

private JButton jButton3 = null;

/**

* This is the default constructor

*/

public Liuyb() {

super();

initialize();

}

/**

* This method initializes this

*

* @return void

*/

private void initialize() {

this.setContentPane(getJContentPane());

this.setTitle("留言板程序");

this.setBounds(new Rectangle(0, 0, 640, 480));

this.setVisible(true);

}

/**

* This method initializes jContentPane

*

* @return javax.swing.JPanel

*/

private JPanel getJContentPane() {

if (jContentPane == null) {

jLabel2 = new JLabel();

jLabel2.setBounds(new Rectangle(214, 407, 45, 24));

jLabel2.setFont(new Font("Dialog", Font.BOLD, 14));

jLabel2.setText("地说：");

jLabel1 = new JLabel();

jLabel1.setBounds(new Rectangle(32, 407, 15, 24));

jLabel1.setFont(new Font("Dialog", Font.BOLD, 14));

jLabel1.setText("你");

jLabel = new JLabel();

jLabel.setBounds(new Rectangle(283, 15, 45, 20));

jLabel.setHorizontalAlignment(SwingConstants.CENTER);

jLabel.setFont(new Font("Dialog", Font.BOLD, 14));

jLabel.setText("留言板");

jContentPane = new JPanel();

jContentPane.setLayout(null);

jContentPane.add(jLabel, null);

jContentPane.add(getJScrollPane(), null);

jContentPane.add(jLabel1, null);

jContentPane.add(getJComboBox(), null);

jContentPane.add(jLabel2, null);

jContentPane.add(getJTextField(), null);

jContentPane.add(getJButton(), null);

jContentPane.add(getJButton1(), null);

jContentPane.add(getJButton2(), null);

jContentPane.add(getJButton3(), null);

}

return jContentPane;

}

/**

* This method initializes jTextArea

*

* @return javax.swing.JTextArea

*/

private JTextArea getJTextArea() {

if (jTextArea == null) {

jTextArea = new JTextArea();

jTextArea.setText("留言内容：");

jTextArea.setEditable(false);

}

return jTextArea;

}

/**

* This method initializes jScrollPane

*

* @return javax.swing.JScrollPane

*/

private JScrollPane getJScrollPane() {

if (jScrollPane == null) {

jScrollPane = new JScrollPane();

jScrollPane.setBounds(new Rectangle(22, 49, 534, 347));

jScrollPane.setViewportView(getJTextArea());

}

return jScrollPane;

}

/**

* This method initializes jComboBox

*

* @return javax.swing.JComboBox

*/

private JComboBox getJComboBox() {

if (jComboBox == null) {

jComboBox = new JComboBox();

jComboBox.setBounds(new Rectangle(54, 407, 149, 24));

String[] mycbox={"微笑","大笑","痛苦"};

jComboBox.addItem(mycbox[0]);

jComboBox.addItem(mycbox[1]);

jComboBox.addItem(mycbox[2]);

}

return jComboBox;

}

/**

* This method initializes jTextField

*

* @return javax.swing.JTextField

*/

private JTextField getJTextField() {

if (jTextField == null) {

jTextField = new JTextField();

jTextField.setBounds(new Rectangle(265, 407, 231, 24));

}

return jTextField;

}

/**

* This method initializes jButton

*

* @return javax.swing.JButton

*/

private JButton getJButton() {

if (jButton == null) {

jButton = new JButton();

jButton.setBounds(new Rectangle(505, 407, 70, 24));

jButton.setText("提交");

jButton.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent e) {

jTextArea.setText(jTextArea.getText()+"\r\n"+"你"+jComboBox.getSelectedItem().toString()+"地说："+jTextField.getText());

}

});

}

return jButton;

}

/**

* This method initializes jButton1

*

* @return javax.swing.JButton

*/

private JButton getJButton1() {

if (jButton1 == null) {

jButton1 = new JButton();

jButton1.setBounds(new Rectangle(565, 51, 60, 32));

jButton1.setText("清屏");

jButton1.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent e) {

jTextArea.setText("留言内容：");

}

});

}

return jButton1;

}

/**

* This method initializes jButton2

*

* @return javax.swing.JButton

*/

private JButton getJButton2() {

if (jButton2 == null) {

jButton2 = new JButton();

jButton2.setBounds(new Rectangle(565, 112, 60, 32));

jButton2.setText("置顶");

jButton2.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent e) {

jTextArea.setCaretPosition(0);

}

});

}

return jButton2;

}

/**

* This method initializes jButton3

*

* @return javax.swing.JButton

*/

private JButton getJButton3() {

if (jButton3 == null) {

jButton3 = new JButton();

jButton3.setBounds(new Rectangle(565, 173, 60, 32));

jButton3.setText("至尾");

jButton3.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent e) {

jTextArea.setCaretPosition((int)jTextArea.getText().length());

}

});

}

return jButton3;

}

public static void main(String args[]){

new Liuyb();

}

}

本文名称：java网页留言板源代码 JAVA留言板
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