基于Oracle数据库登陆界面及功能实现 Java版

　　首先要在Oracle数据库创建表文件，包括建立表头以及关键字（唯一标识符），此次程序所用的表名称为SW_USER_INFO，表头有UNAME、UKEY、USEX等,关键字为UCC，然后添加一条记录，用户名称为system，密码为1.登陆原理为通过链接Oracle数据库，然后搜索表名称，根据关键字锁定记录，获取记录信息与登陆界面输入信息进行比对，信息一致即可登陆成功，反之则不通过。连接Oracle数据库代码如下：

 1 import java.sql.Connection;
 2 import java.sql.DriverManager;
 3 import java.sql.PreparedStatement;
 4 import java.sql.ResultSet;
 5 import java.sql.SQLException;
 6
 7 public class Loading_F {
 8
 9     public String name = "";
10     public int      sex  = -1 ;
11     public String get_Verification_INFO(String UNAME) throws SQLException{
12         String    psw  = "";
13
14         Connection con = null;
15         try
16         {
17             Class.forName("oracle.jdbc.driver.OracleDriver");
18             String url      = "jdbc:oracle:" + "thin:@IP地址:端口号:标识符";
19             String user     = "数据库登陆名";
20             String password = "口令";
21             con    = DriverManager.getConnection(url, user, password);
22         } catch (Exception e) {
23             e.printStackTrace();
24         }
25
26         PreparedStatement pre = null;
27         ResultSet result = null;
28         String sql = "select * from  SW_USER_INFO where UACC=?";
29         pre = con.prepareStatement(sql);
30         pre.setString(1, UNAME);
31         result = pre.executeQuery();
32         while (result.next()){
33             name = result.getString("UNAME");
34             psw  = result.getString("UKEY");
35             sex     = result.getInt("USEX");
36         }
37         con.close();
38         return psw;
39     }
40 }

　　这个里面涉及Oracle数据库表的协议（表内容的具体含义），具体协议内容不具体说明，望各位谅解，这个协议由Oracle数据库用户根据使用内容自己定义。接下来就是用户登陆界面的设计主要具有三个功能：登陆、退出和重置。具体代码如下：

  1 import java.awt.Color;
  2 import java.awt.Dimension;
  3 import java.awt.Font;
  4 import java.awt.Image;
  5 import java.awt.Toolkit;
  6 import java.awt.event.KeyAdapter;
  7 import java.awt.event.KeyEvent;
  8 import java.awt.event.MouseAdapter;
  9 import java.awt.event.MouseEvent;
 10 import java.sql.SQLException;
 11
 12 import javax.swing.ImageIcon;
 13 import javax.swing.JButton;
 14 import javax.swing.JFrame;
 15 import javax.swing.JLabel;
 16 import javax.swing.JPanel;
 17 import javax.swing.JPasswordField;
 18 import javax.swing.JTextField;
 19 import javax.swing.border.LineBorder;
 20
 21 public class Loading_F {
 22
 23     JFrame          f1 = new JFrame("OERI-驾校管理系统-登陆");
 24     static JTextField     jt1 = new JTextField();
 25     JPasswordField jt2 = new JPasswordField();
 26     JTextField       jt3 = new JTextField();
 27     JButton       btn1 = new JButton("确 定");
 28     JButton       btn2 = new JButton("退 出");
 29     JButton       btn3 = new JButton("重置");
 30     String           str1 = new String();
 31
 32     public static void main(String[] args) {
 33         Loading_F lf = new Loading_F();
 34         lf.addFormFunction();
 35         lf.setform();
 36     }
 37     void Start_Loading_Form(){
 38         addFormFunction();
 39         setform();
 40     }
 41
 42     void setform(){
 43         f1.setSize(780, 400);
 44         f1.setResizable(false);
 45         setFrameCenter(f1);
 46
 47         String          path = "bgp/background01.jpg";
 48         ImageIcon background = new ImageIcon(path);
 49         JLabel         label = new JLabel(background);
 50         label.setBounds(0, 0, f1.getWidth(), f1.getHeight());
 51         JPanel    imagePanel = (JPanel) f1.getContentPane();
 52         imagePanel.setOpaque(false);
 53         f1.getLayeredPane().add(label, new Integer(Integer.MIN_VALUE));
 54
 55         JLabel jl1 = new JLabel("请输入用户信息：");
 56         jl1.setBounds(480, 70, 180, 50);
 57         jl1.setFont(new Font("宋体", Font.BOLD, 17));
 58         jl1.setForeground(Color.WHITE);
 59         f1.getLayeredPane().add(jl1, new Integer(Integer.MAX_VALUE));
 60
 61         JLabel jl2 = new JLabel("用户名:");
 62         jl2.setBounds(480, 140, 180, 30);
 63         jl2.setFont(new Font("宋体", Font.BOLD, 13));
 64         jl2.setForeground(Color.WHITE);
 65         f1.getLayeredPane().add(jl2, new Integer(Integer.MAX_VALUE));
 66
 67         JLabel jl3 = new JLabel("密  码:");
 68         jl3.setBounds(480, 180, 180, 30);
 69         jl3.setFont(new Font("宋体", Font.BOLD, 13));
 70         jl3.setForeground(Color.WHITE);
 71         f1.getLayeredPane().add(jl3, new Integer(Integer.MAX_VALUE));
 72
 73         jt1.setBounds(535, 140, 180, 30);
 74         jt1.setBorder(new LineBorder(Color.white));
 75         jt1.setFont(new Font("宋体", Font.BOLD, 15));
 76         jt1.addMouseListener(new MouseAdapter(){
 77             public void mouseEntered(MouseEvent e){
 78                 jt1.setBorder(new LineBorder(Color.black));
 79             }
 80             public void mouseExited(MouseEvent e){
 81                 jt1.setBorder(new LineBorder(Color.white));
 82             }
 83         });
 84         f1.getLayeredPane().add(jt1, new Integer(Integer.MAX_VALUE));
 85
 86         jt2.setBounds(535, 180, 180, 30);
 87         jt2.setEchoChar('*');
 88         jt2.setFont(new Font("宋体", Font.BOLD, 15));
 89         jt2.setBorder(new LineBorder(Color.white));
 90         jt2.addMouseListener(new MouseAdapter(){
 91             public void mouseEntered(MouseEvent e){
 92                 jt2.setBorder(new LineBorder(Color.black));
 93             }
 94             public void mouseExited(MouseEvent e){
 95                 jt2.setBorder(new LineBorder(Color.white));
 96             }
 97         });
 98         f1.getLayeredPane().add(jt2, new Integer(Integer.MAX_VALUE));
 99
100         btn1.setBounds(488, 240, 65, 30);
101         btn1.setBorder(new LineBorder(Color.gray));
102         btn1.addMouseListener(new MouseAdapter(){
103             public void mouseEntered(MouseEvent e){
104                 btn1.setBorder(new LineBorder(Color.black));
105             }
106             public void mouseExited(MouseEvent e){
107                 btn1.setBorder(new LineBorder(Color.gray));
108             }
109         });
110         f1.getLayeredPane().add(btn1, new Integer(Integer.MAX_VALUE));
111
112         btn2.setBounds(568, 240, 65, 30);
113         btn2.setBorder(new LineBorder(Color.gray));
114         btn2.addMouseListener(new MouseAdapter(){
115             public void mouseEntered(MouseEvent e){
116                 btn2.setBorder(new LineBorder(Color.black));
117             }
118             public void mouseExited(MouseEvent e){
119                 btn2.setBorder(new LineBorder(Color.gray));
120             }
121         });
122         f1.getLayeredPane().add(btn2, new Integer(Integer.MAX_VALUE));
123
124         btn3.setBounds(648, 240, 65, 30);
125         btn3.setBorder(new LineBorder(Color.gray));
126         btn3.addMouseListener(new MouseAdapter(){
127             public void mouseEntered(MouseEvent e){
128                 btn3.setBorder(new LineBorder(Color.black));
129             }
130             public void mouseExited(MouseEvent e){
131                 btn3.setBorder(new LineBorder(Color.gray));
132             }
133         });
134         f1.getLayeredPane().add(btn3, new Integer(Integer.MAX_VALUE));
135
136         jt3.setBounds(490, 323, 240, 30);
137         jt3.setBackground(new Color(255,255,255,0));
138         jt3.setOpaque(false);
139         jt3.setBorder(null);
140         jt3.setFont(new Font("黑体", Font.BOLD, 13));
141         jt3.setForeground(Color.WHITE);
142         jt3.setEditable(false);
143         f1.getLayeredPane().add(jt3, new Integer(Integer.MAX_VALUE));
144
145         Image imageIcon = Toolkit.getDefaultToolkit().getImage("bgp/tubiao.png");
146         f1.setIconImage(imageIcon);
147         f1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
148         f1.setVisible(true);
149     }
150     void setFrameCenter(JFrame jf){
151         Toolkit   tl         = Toolkit.getDefaultToolkit();
152         Dimension d          = tl.getScreenSize();
153         double ScreenHeigth =  d.getHeight();
154         double ScreenWidth  =  d.getWidth();
155         int    FrameWidth   = jf.getWidth();
156         int    FrameHeigth  = jf.getHeight();
157         int    Higth        = (int)(ScreenHeigth - FrameHeigth)/2;
158         int    Width        = (int) (ScreenWidth - FrameWidth)/2;
159         jf.setLocation(Width, Higth);
160     }
161     void Password_Verification() throws SQLException{
162         String name             = jt1.getText();
163         char[] passw             = jt2.getPassword();
164         String entered_password = new String(passw);
165
166         if(name.equals("")){
167             str1 = "请输入用户名称!";
168             jt3.setText(str1);
169         }else if(entered_password.equals("")){
170             str1 = "请输入密码!";
171             jt3.setText(str1);
172         }else{
173             str1 = "正在验证登录信息...";
174             jt3.setText(str1);
175             function_res.Loading_F frlf = new function_res.Loading_F();
176             String password = frlf.get_Verification_INFO(name);
177             if(password.equals("")){
178                 str1 = "未找到该用户!";
179                 jt3.setText(str1);
180             }else{
181                 if(password.equals(entered_password)){
182                     str1 = "信息正确，正在登录...";
183                     jt3.setText(str1);
184                     f1.setVisible(false);
185                     f1.dispose();
186                     Major_F mf = new Major_F();
187                     mf.str0 = frlf.name;
188                     mf.usex = frlf.sex;
189                     mf.setform();
190                     mf.setFunction();
191                 }else{
192                     str1 = "密码错误，请在确认无误后再次输入!";
193                     jt3.setText(str1);
194                 }
195             }
196         }
197     }
198     void addFormFunction(){
199         btn1.addMouseListener(new MouseAdapter(){
200             public void mouseClicked(MouseEvent e){
201                 try {
202                     Password_Verification();
203                 } catch (SQLException e1) {
204                     e1.printStackTrace();
205                 }
206             }
207         });
208          btn1.addKeyListener(new KeyAdapter(){
209             @SuppressWarnings("static-access")
210             public void keyPressed(KeyEvent ke){
211                    if(ke.getKeyChar() == ke.VK_ENTER){
212                        try {
213                             Password_Verification();
214                         } catch (SQLException e1){
215                             e1.printStackTrace();
216                         }
217                    }
218                }
219         });
220
221         btn2.addMouseListener(new MouseAdapter(){
222             public void mouseClicked(MouseEvent e){
223                 System.exit(0);
224             }
225         });
226
227         btn3.addMouseListener(new MouseAdapter(){
228             public void mouseClicked(MouseEvent e){
229                 jt1.setText("");
230                 jt2.setText("");
231                 jt3.setText("");
232             }
233         });
234
235     }
236 }

　　运行效果图如下：

　　

　

　　2018年1月27日于青岛