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登錄界面源碼

發布時間: 2022-02-07 17:11:57

java 中 GUI登錄界面設計源代碼

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;

public class Login {

private JFrame frame = new JFrame("登錄");
private Container c = frame.getContentPane();
private JTextField username = new JTextField();
private JPasswordField password = new JPasswordField();
private JButton ok = new JButton("確定");
private JButton cancel = new JButton("取消");
public Login(){
frame.setSize(300,200);
c.setLayout(new BorderLayout());
initFrame();
frame.setVisible(true);
}

private void initFrame() {

//頂部
JPanel titlePanel = new JPanel();
titlePanel.setLayout(new FlowLayout());
titlePanel.add(new JLabel("系統管理員登錄"));
c.add(titlePanel,"North");

//中部表單
JPanel fieldPanel = new JPanel();
fieldPanel.setLayout(null);
JLabel l1 = new JLabel("用戶名:");
l1.setBounds(50, 20, 50, 20);
JLabel l2 = new JLabel("密 碼:");
l2.setBounds(50, 60, 50, 20);
fieldPanel.add(l1);
fieldPanel.add(l2);
username.setBounds(110,20,120,20);
password.setBounds(110,60,120,20);
fieldPanel.add(username);
fieldPanel.add(password);
c.add(fieldPanel,"Center");

//底部按鈕
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new FlowLayout());
buttonPanel.add(ok);
buttonPanel.add(cancel);
c.add(buttonPanel,"South");
}

public static void main(String[] args){
new Login();
}

}

㈡ asp登錄界面源代碼

要是你要的話。我可以發一個文件給你。裡面的內容是一本書的所有例子。包括有
「留言板、注冊和登陸、Blog、小型論壇、新聞發布等等。」
都是ASP版的。只要你建好站點。復制相應的文件到你站點下就行了。

㈢ html網頁設計:一個簡單的登錄界面代碼!

大致形式應該是這樣的:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>3</title>
</head>
<body>
<div align="center">
<form action="" name="myform">
<table>
<tr>
<td>用戶名:</td>
<td><input type="text" id="user" /></td>
</tr>
<tr>
<td>密 碼:</td>
<td><input type="text" id="password" /></td>
</tr>
<tr>
<td>驗證碼:</td>
<td align="left"><input type="text" size="5" id="code" /></td>
</tr>
</table>
</form>
<table>
<tr>
<td>
<input type="submit" value="提交" onclick=myfun_submit() />
</td>
<td>
<input type="submit" value="重置" onclick=myfun_reset() />
</td>
</tr>
</table>
</div>
<script type="text/javascript">
function myfun_submit(){

var user_val = document.getElementById("user").value;
var password_val = document.getElementById("password").value;
if(user_val==""){

alert("用戶名不能為空!!");

}else if(password_val==""){

alert("密碼不能為空!!!");

}

}
function myfun_reset(){
document.getElementById("user").value = "";
document.getElementById("password").value = "";
document.getElementById("code").value = "";

}
</script>
</body>
</html>

㈣ 基於B/S的登錄界面源代碼,要java的

java中沿用C輸出習慣的用法
%s代表當前位置輸出字元串(String)
\n代表一個換行
執行
System.out.printf("%s\n","hello");
System.out.println("new line");
將輸出
hello
new line

㈤ 用html代碼編寫一個簡單的登陸界面

<!DOCTYPE html><html lang="zh-CN"><head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>登錄</title>
<link href="css/bootstrap.min.css" rel="stylesheet"></head><body><nav class="navbar navbar-default">
<div class="container-fluid">
<div class="navbar-header">
<a class="navbar-brand" href="./">jsp作業</a>
</div>
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav navbar-right">
<li><a href="login.html">登錄</a></li>
</ul>
</div>
</div></nav><div class="container">
<div class="row">
<div class="col-md-4">

</div>
<div class="col-md-4">
<form class="form-signin" target="submitFrame" method="post">
<h2 class="form-signin-heading">登錄到jsp作業</h2>
<label for="inputEmail">Email</label>
<input type="email" id="inputEmail" class="form-control" placeholder="請輸入Email" required autofocus><br>
<label for="inputPassword">密碼</label>
<input type="password" id="inputPassword" class="form-control" placeholder="請輸入密碼" required>
<div class="checkbox">
<label>
<input type="checkbox" value="remember-me" checked="checked"> 記住密碼 </label>
</div>
<button type="submit" class="btn btn-primary" id="btn-login">登錄</button>
<a href="reg.html" class="btn btn-default">注冊</a>
</form>
<iframe style="display: none;" name="submitFrame" src="about:blank"></iframe>
</div>
<div class="col-md-4">
</div>
</div>
<script src="js/jquery.min.js"></script></body></html>

㈥ 登錄界面代碼怎麼寫

  • 步驟一:登錄頁面總共分為四個部分。

    第一部分:DIV整體布局。

    第二部分:登錄標題部分。

    第三部分:用戶名和密碼輸入框。

    第四部分:網頁布局樣式。

㈦ 求一個用Java寫的登陸界面的源代碼,輸入用戶名,密碼,登錄後顯示歡迎登錄,加分

這個是我之前做著玩的,只做了個登錄,不要介意,登錄名:admin,密碼:admin。

㈧ jsp登陸界面源代碼

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>登錄頁面</title>

</head>

<body>

<form name="loginForm" method="post" action="judgeUser.jsp">

<table>

<tr>

<td>用戶名:<input type="text" name="userName" id="userName"></td>

</tr>

<tr>

<td>密碼:<input type="password" name="password" id="password"></td>

</tr>

<tr>

<td><input type="submit" value="登錄" 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>身份驗證</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>登錄成功</title>

</head>

<body>

<%

request.setCharacterEncoding("GB18030");

String name = request.getParameter("userName");

out.println("歡迎你:" + name);

%>

</body>

</html>

(8)登錄界面源碼擴展閱讀:

java web登錄界面源代碼:

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();//可執行的 查詢

if(result.next())

password=result.getString("password");

}catch(SQLException e){

e.printStackTrace();

}finally

{

close(preparedStatement);

close(result);

close(connection);

}

System.out.println("找到的資料庫密碼為:"+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" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

<title>驗證用戶密碼</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('用戶名不能為空');</script>");

response.setHeader("refresh", "0;url=user_login.jsp");

}

else

{

System.out.println("輸入的用戶名:"+username);

String passwordInDataBase=util.selectPassword(username);

System.out.println("密碼:"+passwordInDataBase);

if(passwordInDataBase==null||"".equals(passwordInDataBase))

{

out.print("<script language='javaScript'> alert('用戶名不存在');</script>");

response.setHeader("refresh", "0;url=user_login.jsp");

}

else if(passwordInDataBase.equals(password))

{

out.print("<script language='javaScript'> alert('登錄成功');</script>");

response.setHeader("refresh", "0;url=loginSucces.jsp");

}

else

{

out.print("<script language='javaScript'> alert('密碼錯誤');</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" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">

<title>Insert title here</title>

</head>

<body>

<hr size="10" width="26%" align="left" color="green">

<font size="6" color="red" >登錄成功 </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" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">

<title>登錄界面</title>

</head>

<body background="C:Userswin8workspaceLoginimage\_10.jpg" >

<center>

<br><br><br><br><br><br>

<h1 style="color:yellow">Login</h1>

<br>

<form name="loginForm" action="login_check.jsp" method="post">

<table Border="0" >

<tr >

<td>賬號</td>

<td><input type="text" name="username"></td>

</tr>

<tr>

<td>密碼</td>

<td><input type="password" name="password">

</td>

</tr>

</table>

<br>

<input type="submit" value="登錄" style="color:#BC8F8F">

</form>

</center>

</body>

</html>

㈨ 這是登錄頁面的後台代碼:

我感覺你的代碼很清晰,位置也對(有一點,我覺得判斷驗證碼應該在最先,不過這無所謂,不會影響程序)。是不是session丟失的問題,你可以這樣試試,
<system.web>
<sessionState mode="StateServer" timeout="30"/>
</system.web>
並且手動啟動服務ASP.NET State Service
還有你的母版頁,我寫都是在Init事件中判斷session,因為一個頁面套用了母版頁後,順序是這樣的:先是普通頁的init事件,然後母版頁的init,普通頁的load,母版頁的load
,還有你的!ispostback,我也不太知道對不對,去掉試試。
如果還不行的話,那就不好意思了,小弟能力有限,就當我路過...

㈩ html登陸界面代碼

實現這個功能要兩個網頁,一個是前台靜態網頁,用兩個文本框分別為t1,t2,一個按鈕active後面寫上你要跳轉的後台網頁的名稱如"houtai.asp"
以下是houtai.asp的代碼
<%
dim
a,b
a=request.from("t1")
b=request.from("t2")
if
a<>admin
then
response.write
"用戶名錯誤"
else
if
b<> 123456
then

response.write
"密碼錯誤"

else
response.redirect
"你要轉到的主頁.asp"
end
if
end
if
%>

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