java界⾯登录界⾯_Java登录界⾯的实现（注册、登录、背景
图⽚）
*/
* Copyright (c) 2016，烟台⼤学计算机与控制⼯程学院
* All rights reserved.
* ⽂件名：text.java
* 作者：常轩
* ：Worldhello
* 完成⽇期：2016年12⽉27⽇
* 版本号：V1.0
* 程序输⼊：⽆
* 程序输出：见运⾏结果
*/
/*功能描述：
登录界⾯有插⼊了背景图⽚
实现了登录界⾯GUI，可以进⾏ 账号注册，和账号登录，对注册的账号⽤⽂件进⾏存储
*/
package com.xuan.main;
//登录界⾯
import java.awt.Container;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException; public class denglu extends JFrame {
//设置⼀个含有背景图⽚的⾯板
private MyPanel panel;
private JLabel lab_zhanghao = new JLabel("账号:");
private JTextField jta_text = new JTextField();
Font lab = new Font("楷体",1,30);
private JLabel lat_password = new JLabel("密码:");
Font lat = new Font("楷体",1,30);
private JPasswordField jtb_text = new JPasswordField(); private JButton btn_register = new JButton("注册"); private JButton btn_land = new JButton("登陆");
Font btn = new Font("⿊体",2,30);
public static int pd = 0;
public static String ak1, ak2;
private Container contentPane = ContentPane(); public denglu () {
this.setSize(400,267);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setLocationRelativeTo(null);
this.setTitle("登陆");
this.setResizable(false);
btn_register.addActionListener(new ActionListener() {
@SuppressWarnings("deprecation")
public void actionPerformed(ActionEvent e) {
pd = 1;
ak1 = jta_text .getText();
ak2 = jtb_text .getText();
String fileName = "users.dat";
try {
FileWriter writer = new FileWriter(fileName,true);
BufferedWriter outWriter=new BufferedWriter(writer);
outWriter.write("ID:"+ak1+"&&"+"Password:"+ak2);
outWriter.close();
writer.close();
} catch (IOException e1) {
e1.printStackTrace();
}
jta_text.setText("");
jtb_text.setText("");
JOptionPane.showMessageDialog(null,"注册成功！ 您的⽤户名是："+ak1+"密码是："+ ak2); }
});
btn_land.addActionListener(new ActionListener() {
@SuppressWarnings("deprecation")
public void actionPerformed(ActionEvent e) {
if(pd==1||pd==0) {
File fileName=new File("users.dat");
try{
FileReader inOne=new FileReader(fileName);
BufferedReader inTwo=new BufferedReader(inOne);
String s=null;
int judge=1;
while((adLine())!=null)
{
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append("ID:");
stringBuilder.append(Text());
stringBuilder.append("&&");
stringBuilder.append("Password:");
stringBuilder.append(Text());
String String();
if(s.equals(ak)) {
JOptionPane.showMessageDialog(null, "登录成功！");
jta_text .setText("");
jtb_text .setText("");
judge=0;
break;
}
}
inTwo.close();
inOne.close();
if(judge==1) {
JOptionPane.showMessageDialog(null,"登陆失败！检查账号密码是否正确或请注册后登录",null,JOptionPane.ERROR_MESSAGE, null);
jta_text .setText("");
jtb_text .setText("");
}
if(judge==0){
new JMFMediaPlayer("JMF媒体播放器"); //在此处new出新的窗⼝
dispose();
return;
}
}catch(IOException event){
JOptionPane.showMessageDialog(null,"系统错误"+event,null,JOptionPane.ERROR_MESSAGE, null);
}
}
}
});
init();
panel = new MyPanel();
//将所有的组件添加到panel⾯板中
panel.add(lab_zhanghao);
panel.add(lat_password);
panel.add(jta_text);
panel.add(jtb_text);
panel.add(btn_register);
panel.add(btn_land);
panel.setLayout(null);
getContentPane().add(panel);
}
private void init() {
lab_zhanghao.setSize(200,100);
lab_zhanghao. setLocation(50,20);
lab_zhanghao.setFont(lab);
lat_password.setSize(200,100);
lat_password.setLocation(50,80);图片下载站源码
lat_password.setFont(lat);
jta_text.setSize(190,30);
jta_text.setLocation(160,55);
jtb_text.setSize(190,30);
jtb_text.setLocation(160,115);
btn_register.setSize(120, 40);
btn_register.setLocation(60, 180);
btn_land.setSize(120, 40);
btn_land.setLocation(230, 180);
btn_register.setFont(btn);
btn_land.setFont(btn);
}
public static void main(String[] args)
throws ClassNotFoundException,
InstantiationException, IllegalAccessException,
UnsupportedLookAndFeelException {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel"); new denglu().setVisible(true);
}
}
package com.xuan.main;
//登录界⾯背景
import java.awt.*;
import javax.swing.*;

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