本文目录一览：
jsp登陆界面源代码
1、login.jsp文件
%@ page language="java" contentType="text/html; charset=GB18030"
pageEncoding="GB18030"%
%@ page import="java.util.*" %
!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
html
head
title登录页面/title
/head
body
form name="loginForm" method="post" action="judgeUser.jsp"
table
tr
td用户名:input type="text" name="userName" id="userName"/td
/tr
tr
td密码:input type="password" name="password" id="password"/td
/tr
tr
tdinput type="submit" value="登录" style="background-color:pink" input
type="reset" value="重置" style="background-color:red"/td
/tr
/table
/form
/body
/html
2、judge.jsp文件
%@ page language="java" contentType="text/html; charset=GB18030"
pageEncoding="GB18030"%
%@ page import="java.util.*" %
!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
html
head
title身份验证/title
/head
body
%
request.setCharacterEncoding("GB18030");
String name = request.getParameter("userName");
String password = request.getParameter("password");
if(name.equals("abc") password.equals("123")) {
3、afterLogin.jsp文件
%
jsp:forward page="afterLogin.jsp"
jsp:param name="userName" value="%=name%"/
/jsp:forward
%
}
else {
%
jsp:forward page="login.jsp"/
%
}
%
/body
/html
%@ page language="java" contentType="text/html; charset=GB18030"
pageEncoding="GB18030"%
!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
html
head
title登录成功/title
/head
body
%
request.setCharacterEncoding("GB18030");
String name = request.getParameter("userName");
out.println("欢迎登录页面代码你:" + name);
%
/body
/html
扩展资料：
java web登录界面源代码：
1、Data_uil.java文件
import java.sql.*;
public class Data_uil
{
public Connection getConnection()
{
try{
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
}catch(ClassNotFoundException e)
{
e.printStackTrace();
}
String user="***";
String password="***";
String url="jdbc:sqlserver://127.0.0.1:1433;DatabaseName=***";
Connection con=null;
try{
con=DriverManager.getConnection(url,user,password);
}catch(SQLException e)
{
e.printStackTrace();
}
return con;
}
public String selectPassword(String username)
{
Connection connection=getConnection();
String sql="select *from login where username=?";
PreparedStatement preparedStatement=null;
ResultSet result=null;
String password=null;
try{
preparedStatement=connection.prepareStatement(sql);
preparedStatement.setString(1,username);
result=preparedStatement.executeQuery();//可执行登录页面代码的 查询
if(result.next())
password=result.getString("password");
}catch(SQLException e){
e.printStackTrace();
}finally
{
close(preparedStatement);
close(result);
close(connection);
}
System.out.println("找到的数据库密码为："+password);
return password;
}
public void close (Connection con)
{
try{
if(con!=null)
{
con.close();
}
}catch(SQLException e)
{
e.printStackTrace();
}
}
public void close (PreparedStatement preparedStatement)
{
try{
if(preparedStatement!=null)
{
preparedStatement.close();
}
}catch(SQLException e)
{
e.printStackTrace();
}
}
public void close(ResultSet resultSet)
{
try{
if(resultSet!=null)
{
resultSet.close();
}
}catch(SQLException e)
{
e.printStackTrace();
}
}
}
2、login_check.jsp:文件
%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%
!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" ""
html
head
meta http-equiv="Content-Type" content="text/html; charset=utf-8"
title验证用户密码/title
/head
body
jsp:useBean id="util" class="util.Data_uil" scope="page" /
%
String username=(String)request.getParameter("username");
String password=(String)request.getParameter("password");
if(username==null||"".equals(username))
{
out.print("script language='javaScript' alert('用户名不能为空');/script");
response.setHeader("refresh", "0;url=user_login.jsp");
}
else
{
System.out.println("输入的用户名:"+username);
String passwordInDataBase=util.selectPassword(username);
System.out.println("密码："+passwordInDataBase);
if(passwordInDataBase==null||"".equals(passwordInDataBase))
{
out.print("script language='javaScript' alert('用户名不存在');/script");
response.setHeader("refresh", "0;url=user_login.jsp");
}
else if(passwordInDataBase.equals(password))
{
out.print("script language='javaScript' alert('登录成功');/script");
response.setHeader("refresh", "0;url=loginSucces.jsp");
}
else
{
out.print("script language='javaScript' alert('密码错误');/script");
response.setHeader("refresh", "0;url=user_login.jsp");
}
}
%
/body
/html
3、loginSucces.jsp文件
%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%
!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" ""
html
head
meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"
titleInsert title here/title
/head
body
hr size="10" width="26%" align="left" color="green"
font size="6" color="red" 登录成功 /font
hr size="10" width="26%" align="left" color="green"
/body
/html
4、user_login.jsp文件
%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%
!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" ""
html
head
meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"
title登录界面/title
/head
body background="C:\Users\win8\workspace\Login\image\9dcbdc339e72a5663b5c289fb5573c13_10.jpg"
center
brbrbrbrbrbr
h1 style="color:yellow"Login/h1
br
form name="loginForm" action="login_check.jsp" method="post"
table Border="0"
tr
td账号/td
tdinput type="text" name="username"/td
/tr
tr
td密码/td
tdinput type="password" name="password"
/td
/tr
/table
br
input type="submit" value="登录" style="color:#BC8F8F"
/form
/center
/body
/html
如何用eclipse写登录注册页面的代码
java写登录页面代码的用户登录实例登录页面代码，实际页面展示使用登录页面代码的jsp登录页面代码，那么下面是jsp的登录页面代码登录页面代码：
1、login.jsp代码
%
string name = request.getparameter("username");
string pwd = request.getparameter("password");
//out.println(name+pwd);
string sql ="select * from info where username='"+name+"' and password='"+pwd+"'";
//out.println(sql);
statement stm= null;
resultset rs =null;
try
{
stm = conn.createstatement();
rs = stm.executequery(sql);
if(rs.next())
{
session.setattribute("username",name);
response.sendredirect("index.html");
}
else
{
response.sendredirect("index1.html");
}
}
catch(sqlexception e)
{
e.printstacktrace();
}
%
!--登录的表单--
form name="form1" method="post" action="login.jsp"
p
label for="username"/label 用户名
input type="text" name="username" id="username"
/p
p
label for="passwrod"/label 密码
input type="text" name="passwrod" id="passwrod"
/p
p
input type="submit" name="button" id="button" value="提交"
/p
/form
2、用户信息表，存放用户名和密码：
user_info 表
create table if not exists `test` (
`id` int(8) not null auto_increment,
`username` char(150) default null,
`password` varchar(32),
`times` int(4) not null,
primary key (`id`)
) engine=myisam default charset=utf8 auto_increment=1 ;
用户登录html代码有哪些？
html
head
title登陆页面/title
/head
form action="login_conf.jsp" method="post"
用户登陆
用户名：input type="text" name="uname"
密码： input type="password" name="upassword"
input type="submit" value="提交"
input type="reset" value="重置"
/form
/body
/html
****************************************************
验证页面jsp代码如下：
html
head
title用户验证页面/title
/head
h1 登陆范例-登陆成功 /h1
/html
不知道你用啥样的前台 是jsp还是asp.net或者是php
世纪佳缘会员登录页面代码是什么
世纪佳缘 登录
登录
# _*_ coding:utf-8 _*_
import urllib2
import urllib
import cookielib
import re
# 通过cookiejar()类构建一个cookieJar对象，用来保存cookie的值
cookie = cookielib.CookieJar()
# 通过HTTPCookieProcessor()处理器类构建一个处理器对象，用来处理cookie
# 参数就是构建的CookieJar()对象
cookie_handler = urllib2.HTTPCookieProcessor(cookie)
# 构建一个自定义的opener
opener = urllib2.build_opener(cookie_handler)
# 通过自定义opener的addheaders的参数，可以添加HTTP报头参数
opener.addheaders = [('User-Agent',
'Mozilla/5.0 (windows NT 6.1; Win64; x64) APPleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.101 Safari/537.36')]
# 世纪佳缘网登录接口
url = ';channel=1position=21refrer=;host=0'
def login_data(login_page):
# 填写自己的用户名和密码
login_data = {u'name': u'158*********',
u'password': u'12*********',
u'remem_pass': u'on'}
pattern = re.compile(r'input type="hidden" name="(\w+)" value="(\w+)"\s*/', re.U)
login_info = pattern.findall(login_page)
for item in login_info:
key, val = item
login_data[key] = val
return login_data
data = login_data(url)
# 通过urlencode()编码转换
data = urllib.urlencode(data)
# 第一次是POST请求，发送登录需要的参数，获取cookie
request = urllib2.Request(url, data=data)
response = opener.open(request)
print response.read()
望采纳。
