import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import java.util.Properties;
import java.util.Set;
import javax.swing.JOptionPane;
import cn.cast.LoginFrame;
import cn.cast.TextFrame;
/**
*
* @author Administrator
* 这是一个登录界面
*/
public class LoginFrame extends javax.swing.JFrame {
private static final long serialVersionUID = 7359199181033703764L;
public LoginFrame() {
initComponents();
this.setTitle("登录界面");
this.setResizable(false);
this.setLocation(400, 200);
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
Name = new javax.swing.JLabel();
PassWord = new javax.swing.JLabel();
UserName = new javax.swing.JTextField();
Password = new javax.swing.JPasswordField();
Login = new javax.swing.JToggleButton();
Regist = new javax.swing.JToggleButton();
Cancel = new javax.swing.JToggleButton();
jLabel1.setText("jLabel1");
jLabel2.setText("jLabel2");
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel3.setFont(new java.awt.Font("宋体", 1, 18)); // NOI18N
jLabel3.setForeground(new java.awt.Color(153, 0, 153));
jLabel3.setText("用户登录");
Name.setText("用户名");
PassWord.setText("密 码");
Login.setText("登录");
Login.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
try {
LoginMouseClicked(evt);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
Login.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
LoginActionPerformed(evt);
}
});
Regist.setText("注册");
Regist.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
RegistMouseClicked(evt);
}
});
Regist.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
RegistActionPerformed(evt);
}
});
Cancel.setText("取消");
Cancel.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
CancelMouseClicked(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 116, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(131, 131, 131))
.addGroup(layout.createSequentialGroup()
.addGap(67, 67, 67)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(PassWord)
.addComponent(Name))
.addGap(35, 35, 35)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(UserName, javax.swing.GroupLayout.DEFAULT_SIZE, 189, Short.MAX_VALUE)
.addComponent(Password))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addGap(49, 49, 49)
.addComponent(Login, javax.swing.GroupLayout.PREFERRED_SIZE, 85, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(26, 26, 26)
.addComponent(Cancel, javax.swing.GroupLayout.PREFERRED_SIZE, 85, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 26, Short.MAX_VALUE)
.addComponent(Regist, javax.swing.GroupLayout.PREFERRED_SIZE, 85, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(44, 44, 44))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(38, 38, 38)
.addComponent(jLabel3))
.addGroup(layout.createSequentialGroup()
.addGap(100, 100, 100)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(UserName, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(Name))))
.addGap(35, 35, 35)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(PassWord)
.addComponent(Password, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(49, 49, 49)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(Login)
.addComponent(Regist)
.addComponent(Cancel))
.addContainerGap(51, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void CancelMouseClicked(java.awt.event.MouseEvent evt) {
System.exit(0);
// TODO add your handling code here:
}
private void RegistMouseClicked(java.awt.event.MouseEvent evt) {
dispose();
RegistFrame re=new RegistFrame();
re.setVisible(true);
}
private void LoginMouseClicked(java.awt.event.MouseEvent evt) throws IOException {
String name = this.UserName.getText().trim();//获取输入信息
String pwd = this.Password.getText().trim();
Properties prop = new Properties();//创建集合
Reader r = new FileReader("user.txt");
prop.load(r);
r.close();
Set<String> set = prop.stringPropertyNames();
//判断用户名是否相同
if (set.contains(name)) {
for (String key : set) {//遍历集合，获取键所对应的值
String value = prop.getProperty(key);
//判断密码是否相同
if(pwd.equals(value)){
dispose();
TextFrame tf = new TextFrame();
tf.setVisible(true);
break;
}
}
} else {
JOptionPane.showMessageDialog(this, "用户名或密码错误，请重新登录！");
dispose();
LoginFrame lf = new LoginFrame();
lf.setVisible(true);
this.UserName.setText("");
this.PassWord.setText("");
}
}
public static void main(String args[]) {
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(LoginFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(LoginFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(LoginFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(LoginFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new LoginFrame().setVisible(true);
}
});
}
private javax.swing.JToggleButton Cancel;
private javax.swing.JToggleButton Login;
private javax.swing.JLabel Name;
private javax.swing.JLabel PassWord;
private javax.swing.JPasswordField Password;
private javax.swing.JToggleButton Regist;
private javax.swing.JTextField UserName;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
}
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