s1(java)项目实战（固定资产管理）（op_login ）

最新推荐文章于 2024-05-12 17:40:49 发布

原创最新推荐文章于 2024-05-12 17:40:49 发布 · 599 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#login #java #string #manager #exception #import

java 专栏收录该内容

82 篇文章

订阅专栏

package op;

import java.awt.*;

import javax.swing.*;
import java.awt.Rectangle;
import java.awt.event.*;
import tools.*;
import java.util.*;

/**
* Title: 
*
* Description: 
*
* Copyright: Copyright (c) 2007
*
* Company: 
*
* @author not attributable
* @version 1.0
*/
public class login extends JDialog {
 JPanel panel1 = new JPanel();
 JComboBox jComboBox1;
 JPasswordField jPasswordField1 = new JPasswordField();
 JButton jButton1 = new JButton();
 JButton btn_ok = new JButton();
 DBConnection dcon = null;
 String name = null;

    public login(Frame owner, String title, boolean modal) {
        super(owner, title, modal);
        try {
            this.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
            jbInit();
            pack();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }

    public login() {
        this(new Frame(), "login", false);
    }

    private void jbInit() throws Exception {
        panel1.setLayout(null);
        jComboBox1 = new JComboBox(getM());
        jComboBox1.setBounds(new Rectangle(55, 26, 130, 32));
        jPasswordField1.setText("");
        jPasswordField1.setBounds(new Rectangle(54, 85, 131, 37));
        jButton1.setBounds(new Rectangle(140, 144, 86, 37));
        jButton1.setText("关闭");
        btn_ok.setBounds(new Rectangle(20, 143, 89, 41));
        btn_ok.setText("确定");
        getContentPane().add(panel1);
        panel1.add(jComboBox1, null);
        panel1.add(jPasswordField1);
        panel1.add(btn_ok);
        panel1.add(jButton1);
        this.setResizable(false);
        jButton1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                System.exit(0);
            }
        });
        btn_ok.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                loginW();
            }
        });
    }
public void closed()
    {
        this.dispose();
    }

    private void loginW() {
        if (jPasswordField1.getPassword().length == 0) {
            JOptionPane.showMessageDialog(this, "密码没有输入");
        } else {
            dcon = new DBConnection();
            String strpass = new String(jPasswordField1.getPassword()).trim();
            String sql = "select * from Manager where manager_username='" +
                         jComboBox1.getSelectedItem().toString().trim() +
                         "' and manager_password='" + strpass + "'";
            if (!dcon.isNull(sql)) {
                jPasswordField1.setText("");
                JOptionPane.showMessageDialog(this, "密码错误");
                name = null;
            }else {
                this.setVisible(false);
                name = jComboBox1.getSelectedItem().toString().trim();
                }
            }
    }

private String[] getM() {
 dcon = new DBConnection();
 String sql = "select manager_username from Manager";
 Vector v = dcon.select(sql);
 String[] manger = new String[v.size()];
 for (int i = 0; i < v.size(); i++) {
 manger[i] = ((Vector) v.get(i)).get(0).toString().trim();
 }
 return manger;
 }
 public String username()
 {
 return name;
 }
}