界面建議用可視化來(lái)做,美觀且便捷。下面這個(gè)是完全用代碼寫的,僅供參考。
創(chuàng)新互聯(lián)公司網(wǎng)絡(luò)公司擁有十余年的成都網(wǎng)站開發(fā)建設(shè)經(jīng)驗(yàn),上千多家客戶的共同信賴。提供網(wǎng)站設(shè)計(jì)、網(wǎng)站建設(shè)、網(wǎng)站開發(fā)、網(wǎng)站定制、賣鏈接、建網(wǎng)站、網(wǎng)站搭建、響應(yīng)式網(wǎng)站開發(fā)、網(wǎng)頁(yè)設(shè)計(jì)師打造企業(yè)風(fēng)格,提供周到的售前咨詢和貼心的售后服務(wù)
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.sql.*;
public class Register extends JFrame {
JLabel jl1 = new JLabel("用戶名");
JTextField jt1 = new JTextField();
JLabel jl2 = new JLabel("郵箱");
JTextField jt2 = new JTextField();
JLabel jl3 = new JLabel("密碼");
JPasswordField jpw1 = new JPasswordField();
JLabel jl4 = new JLabel("密碼確認(rèn)");
JPasswordField jpw2 = new JPasswordField();
JButton register = new JButton("注冊(cè)");
JButton clean = new JButton("清空");
public Register(){
setLayout(new GridLayout(5,2));
add(jl1);
add(jt1);
add(jl2);
add(jt2);
add(jl3);
add(jpw1);
add(jl4);
add(jpw2);
add(register);
add(clean);
String name = jt1.getText();
String email = jt2.getText();
String pw = jpw1.getText();
register.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
try{
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost/db","root","");
Statement sta = con.createStatement();
sta.executeUpdate("INSERT INTO register VALUES(name,email,pw)");
JOptionPane.showMessageDialog(null,"注冊(cè)成功","提示",JOptionPane.INFORMATION_MESSAGE);
}
catch(Exception ex){
ex.getStackTrace();
}
}
});
clean.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
jt1.setText("");
jt2.setText("");
jpw1.setText("");
jpw2.setText("");
}
});
}
public static void main(String[] args){
Register frame = new Register();
frame.setTitle("用戶注冊(cè)");
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(400,400);
frame.setVisible(true);
}
}
效果圖
代碼
!DOCTYPE?html
html
head
meta?charset="UTF-8"
title先鋒圖書館管理系統(tǒng)-登錄/title
style
*{
margin:?0;
padding:?0;
list-style:?none;
}
#top{
width:?1000px;
height:?95px;
margin:?0?auto;
margin-top:?25px;
}
#top_top{
width:?1000px;
height:?65px;
background:?deepskyblue;
}
#top_top_left{
width:?300px;
height:?65px;
float:?left;
}
#top_top_leftlabel{
width:?200px;
height:?65px;
color:?white;
float:?right;
}
#top_top_left#a2{
padding-left:?10px;
padding-top:?20px;
font-size:?16px;
}
#top_bottom{
width:?1000px;
height:?30px;
}
#top_bottom_left{
width:?340px;
height:?30px;
line-height:?30px;
font-size:?12px;
background:?skyblue;
color:?white;
text-indent:?2em;
float:?left;
}
#top_bottom_right{
width:?660px;
height:?30px;
line-height:?30px;
font-size:?12px;
color:?blueviolet;
text-align:?center;
float:?right;
background:?lightskyblue;
}
#content{
width:?1000px;
height:?600px;
margin:?0?auto;
background:#587FBA;
}
#content#text{
width:?1000px;
height:?50px;
line-height:?50px;
padding-top:?100px;
font-size:?36px;
font-family:"楷體";
font-weight:?bold;
text-align:?center;
}
#content#login{
width:?480px;
height:?210px;
margin-top:?20px;
margin-left:?260px;
background:?#85A0CB;
}
#content#loginimg{
float:?left;
}
#content#login#select{
width:?305px;
height:?210px;
float:?right;
}
#content#login#selectdiv{
width:?230;
height:?30px;
margin-left:?30px;
}
#content#login#select#d1{
margin-top:30px;
margin-bottom:?3px;
}
#content#login#selectp{
font-size:?14px;
margin-left:?95px;
}
#bottom{
width:?1000px;
height:?35px;
line-height:?35px;
margin:?0?auto;
background:?deepskyblue;
text-align:?center;
color:?white;
}
/style
/head
body
div?id="top"
div?id="top_top"
div?id="top_top_left"
img?src="img/test/a13.png"?width="78px"?height="65px"label?id="a2"先鋒圖書館系統(tǒng)管理平臺(tái)/label
/div
/div
div?id="top_bottom"
div?id="top_bottom_left"當(dāng)前位置?:?首頁(yè)??系統(tǒng)管理??登錄/div
div?id="top_bottom_right"當(dāng)前時(shí)間?:?label?id="lable"/label/div
/div
/div
div?id="content"
div?id="text"歡迎登錄先鋒圖書館管理系統(tǒng)/div
div?id="login"
img?src="img/test/a14.png"??width="175px"?height="210px"/
form?id="select"
div?id="d1"用戶名:?nbsp;nbsp;input?type="text"?//div
div密????nbsp;?碼:?nbsp;nbsp;input?type="password"?//div
p
input?type="radio"?name="user"?value="read"/讀者nbsp;nbsp;nbsp;nbsp;
input?type="radio"?name="user"?value="admin"/管理員
/pbr/
p
input?type="button"?value="確定"?style="width:?50px;"?onclick="put()"/nbsp;nbsp;nbsp;nbsp;
input?type="reset"?value="重置"?style="width:?50px;"/
/p
/form
/div
/div
div?id="bottom"欣欣科技有限公司版權(quán)所有/div
/body
script?type="text/javascript"?src="JQuery/jquery.js"/script
script?type="text/javascript"?src="js/GetCurrentTime.js"/script
script
//驗(yàn)證用戶名和密碼
function?put(){
var?d?=?$("#selectdivinput");//獲取用戶名和密碼
var?name?=?d[0].value;
var?pass?=?d[1].value;
var?user?=?null;
var?r?=?document.getElementsByName("user");//獲取用戶類型
for(i=0;ir.length;i++){
if(r[i].checked){
user=r[i].value;
}
}
//console.log(name?+?","?+pass?+?","?+user);//輸出測(cè)試
if(user==null){
window.alert("請(qǐng)選擇用戶類型!");
}else?if(user=="admin"??name!="admin"){
window.alter("用戶名錯(cuò)誤!");
}else?if(user=="admin"??name=="admin"??pass!="123456"){
window.alert("密碼錯(cuò)誤!");
}else?if(name=="admin"??pass=="123456"??user=="admin"){
window.location.href="work_02_welcome.html";//在js中在本頁(yè)面中打開新鏈接
}else{
window.alert("用戶名錯(cuò)誤");
}
}
/script
/html
public class User{
//定義私有屬性 ?用戶名和密碼
private String userName;
private String password;
public User(String userName,String password){
this.userName=userName;
this.password=password;
}
//私有屬性的set ?get 方法
public void setUserName(String userName){
this.userName=userName;
}
public void setPassword(String password){
this.password=password; ?
}
public String getUserName(){
return this.userName;
}
public String getPassword(){
return this.password;
}
//用來(lái)判斷用戶名和密碼是否正確
public boolean panDuan(){
if("用戶名".equals(this.userName)"密碼".equals(this.password)){
? ? ?System.out.println("登入成功!");
? ? return true;
?}else{
? ? System.out.println("登入失??!");
? ?return false;
?}
}
public static void main (String[] args){
System.out.println("請(qǐng)輸入用戶名:");
scanner sc=new scanner(System.in);
String userName=sc.nextLine();
System.out.println("請(qǐng)輸入密碼:");
String password=sc.nextLine();
User u=new User(userName,password);
u.panDuan();
}
}
補(bǔ)充:Java是一種可以撰寫跨平臺(tái)應(yīng)用程序的面向?qū)ο蟮某绦蛟O(shè)計(jì)語(yǔ)言。Java 技術(shù)具有卓越的通用性、高效性、平臺(tái)移植性和安全性,廣泛應(yīng)用于PC、數(shù)據(jù)中心、游戲控制臺(tái)、科學(xué)超級(jí)計(jì)算機(jī)、移動(dòng)電話和互聯(lián)網(wǎng),同時(shí)擁有全球最大的開發(fā)者專業(yè)社群。
String username = "",password = "",passwordagain = ""; // 定義用戶名和密碼
將該變量等于為全局變量 或局部變量即可
//這個(gè)是我寫的,里面有連接數(shù)據(jù)庫(kù)的部分。你可以拿去參考一下
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.sql.*;
class LoginFrm extends JFrame implements ActionListener// throws Exception
{
JLabel lbl1 = new JLabel("用戶名:");
JLabel lbl2 = new JLabel("密碼:");
JTextField txt = new JTextField(5);
JPasswordField pf = new JPasswordField();
JButton btn1 = new JButton("確定");
JButton btn2 = new JButton("取消");
public LoginFrm() {
this.setTitle("登陸");
JPanel jp = (JPanel) this.getContentPane();
jp.setLayout(new GridLayout(3, 2, 5, 5));
jp.add(lbl1);
jp.add(txt);
jp.add(lbl2);
jp.add(pf);
jp.add(btn1);
jp.add(btn2);
btn1.addActionListener(this);
btn2.addActionListener(this);
}
public void actionPerformed(ActionEvent ae) {
if (ae.getSource() == btn1) {
try {
Class.forName("com.mysql.jdbc.Driver");// mysql數(shù)據(jù)庫(kù)
Connection con = DriverManager.getConnection(
"jdbc:mysql://localhost/Car_zl", "root", "1");// 數(shù)據(jù)庫(kù)名為Car_zl,密碼為1
System.out.println("com : "+ con);
Statement cmd = con.createStatement();
String sql = "select * from user where User_ID='"
+ txt.getText() + "' and User_ps='"
+ pf.getText() + "'" ;
ResultSet rs = cmd
.executeQuery(sql);// 表名為user,user_ID和User_ps是存放用戶名和密碼的字段名
if (rs.next()) {
JOptionPane.showMessageDialog(null, "登陸成功!");
} else
JOptionPane.showMessageDialog(null, "用戶名或密碼錯(cuò)誤!");
} catch (Exception ex) {
}
if (ae.getSource() == btn2) {
System.out.println("1111111111111");
//txt.setText("");
//pf.setText("");
System.exit(0);
}
}
}
public static void main(String arg[]) {
JFrame.setDefaultLookAndFeelDecorated(true);
LoginFrm frm = new LoginFrm();
frm.setSize(400, 200);
frm.setVisible(true);
}
}
新聞標(biāo)題:java賬號(hào)密碼注冊(cè)代碼,java注冊(cè)賬號(hào)的代碼
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