简单的JAVA员工信息管理系统源码

1、/ 项目目标：建立员工管理系统第一个版本。/ 实现图形用户界面的员工信息查询、增、删、改；与数据库建立，并将修改结果时时保存到数据库。/ 模块：1.GUI界面 2.数据库连接 3.查询 4.增、5删 6改(操作数据库）import java.sql.*;import java.awt.*;import .*;import javax.swing.*;public class EmpManageSys implements ActionListener Connection con;Statement stmt;String sql;ResultSet rs;StringBuffer sb = new StringBuffer();JTextField jtf2 = new JTextField(张飞,10);JTextField jtf3 = new JTextField(10);JTextField jtf4 = new JTextField(10);JTextField jtf7 = new JTextField(10);JTextField jtf5 = new JTextFie

2、ld(10);JTextField jtf6 = new JTextField(10);JTextField jtf8 = new JTextField(10);JTextField jtf9 = new JTextField(10);JTextArea jta10 = new JTextArea(50, 40);public void actionPerformed(ActionEvent e) String str = e.getActionCommand();if (查询.equals(str) /if check the button of 查询，then go to method of searchEmp()searchEmp(); else if (增加.equals(str) /if check the button of 增加，then go to method of addEmp()addEmp(); else if (修改.equals(str) /if check the button of 修改，then go to method of alterEmp()al

3、terEmp(); else if (撤除.equals(str) /if check the button of 撤除，then go to method of deleteEmp()deleteEmp();/this is the constructor.EmpManageSys() createGUI();connectToDataBase();/ searchEmp();/ addEmp();/ deleteEmp();alterEmp();/connect to the database by using the method getConnection from the class of JdbcUtil./You can find the class of JdbcUtil at the button of this page.public Connection connectToDataBase() con = JdbcUtil.getConnection();(con);return con;public void searchEmp() jta10.setText(

4、);try stmt = con.createStatement();/ sql = select * from Mstar where id= + jtf3.getText();/ sql1=select * from sd100343 where =+jtf3.getText();sql = select * from Mstar where chineseName=+ jtf2.getText().toLowerCase().trim() + or id=+ jtf3.getText().toLowerCase().trim() + or engName=+ jtf4.getText().toLowerCase().trim() + or UNIT=+ jtf5.getText().toLowerCase().trim() + or TEAM=+ jtf6.getText().toLowerCase().trim() + or Phone=+ jtf7.getText().toLowerCase().trim() + or region=+ jtf8.getText().toLo

5、werCase().trim() + or busStation=+ jtf9.getText().toLowerCase().trim();stmt.executeQuery(sql);rs = stmt.getResultSet();ResultSetMetaData meta = rs.getMetaData();int cols = meta.getColumnCount();while (rs.next() for (int i = 1; i = cols; i+) sb.append( + meta.getColumnName(i) + =);sb.append(rs.getString(i);sb.append(n);jta10.setText(sb.toString(); catch (SQLException e11) e11.printStackTrace();public void addEmp() try stmt = con.createStatement();sql = update Mstar values( + jtf2.getText() + jtf3

6、.getText()+ jtf4.getText() + jtf5.getText() + jtf6.getText()+ jtf7.getText() + jtf8.getText() + jtf9.getText() + );int i = stmt.getUpdateCount();if (jtf2.getText() != null) & (jtf4.getText() != null)& (jtf6.getText() != null) & (jtf7.getText() != null) stmt.executeUpdate(sql);jta10.setText(添加记录成功 + i + 条); else jta10.setText(带*号项为添加记录时不能为空); catch (SQLException e1) e1.printStackTrace();public void deleteEmp() searchEmp();try stmt = con.createStatement();sql = delete from Mstar where chineseName=

7、+ jtf2.getText().toLowerCase().trim() + or id=+ jtf3.getText().toLowerCase().trim() + or engName=+ jtf4.getText().toLowerCase().trim() + or UNIT=+ jtf5.getText().toLowerCase().trim() + or TEAM=+ jtf6.getText().toLowerCase().trim() + or Phone=+ jtf7.getText().toLowerCase().trim() + or region=+ jtf8.getText().toLowerCase().trim() + or busStation=+ jtf9.getText().toLowerCase().trim();stmt.executeUpdate(sql);int i = stmt.getUpdateCount();jta10.setText(撤除操作成功 + i + 条); catch (SQLException e) e.printS

8、tackTrace();public void alterEmp() searchEmp();sql = update Mstar set chineseName=+ jtf2.getText().toLowerCase().trim() + and id=+ jtf3.getText().toLowerCase().trim() + and engName=+ jtf4.getText().toLowerCase().trim() + and UNIT=+ jtf5.getText().toLowerCase().trim() + and TEAM=+ jtf6.getText().toLowerCase().trim() + and Phone=+ jtf7.getText().toLowerCase().trim() + and region=+ jtf8.getText().toLowerCase().trim() + and busStation=+ jtf9.getText().toLowerCase().trim();int i = 0;try stmt.executeU

9、pdate(sql);i = stmt.getUpdateCount(); catch (SQLException e) e.printStackTrace();jta10.setText(修改操作成功 + i + 条);public void createGUI() JFrame jf = new JFrame(员工信息管理系统);jf.setLayout(new GridLayout(2, 1);/ jf.setLayout(new GridLayout(10,2);JPanel jp00 = new JPanel(new GridLayout(5, 4);JPanel jp1 = new JPanel();JButton jb11 = new JButton(查询);jb11.addActionListener(this);JButton jb12 = new JButton(增加);jb12.addActionListener(this);jp1.add(jb11);jp1.add(jb12);jp00.add(jp1);JPanel jp11 = new JPanel();JButton j

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