生成Java通过连接数据库并在窗口显示编写代码 专家管理。对专家信息的导入、导出管理。专家信息一般包括姓名、专业、年龄、职称、所在单位，职务等。 （3）项目管理。对项目信息的导入、导出管理。项目信息一般包括项目类别，项目名称，项目主持人，项目参与人员，项目介绍，项目所属学科。 （4）项目评审专家分配。对系统项目，设置专家分配规则。简单规则：可根据项目类别或主持人所在单位随机分配3名以上专家（5）统计。按照专家或项目等分类查看结果，导出结果。

以下是Java连接数据库并在窗口显示专家管理的代码示例：

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;

public class ExpertManagement extends JFrame implements ActionListener {
    private JLabel nameLabel, majorLabel, ageLabel, titleLabel, companyLabel, positionLabel;
    private JTextField nameField, majorField, ageField, titleField, companyField, positionField;
    private JButton addButton, updateButton, deleteButton, importButton, exportButton;
    private JTable expertTable;
    private JScrollPane scrollPane;

    private Connection conn;
    private Statement stmt;
    private ResultSet rs;

    public ExpertManagement() {
        super("Expert Management");

        nameLabel = new JLabel("Name:");
        majorLabel = new JLabel("Major:");
        ageLabel = new JLabel("Age:");
        titleLabel = new JLabel("Title:");
        companyLabel = new JLabel("Company:");
        positionLabel = new JLabel("Position:");

        nameField = new JTextField(20);
        majorField = new JTextField(20);
        ageField = new JTextField(20);
        titleField = new JTextField(20);
        companyField = new JTextField(20);
        positionField = new JTextField(20);

        addButton = new JButton("Add");
        updateButton = new JButton("Update");
        deleteButton = new JButton("Delete");
        importButton = new JButton("Import");
        exportButton = new JButton("Export");

        expertTable = new JTable();
        scrollPane = new JScrollPane(expertTable);

        setLayout(new GridBagLayout());
        GridBagConstraints gc = new GridBagConstraints();

        gc.gridx = 0;
        gc.gridy = 0;
        add(nameLabel, gc);

        gc.gridx = 1;
        add(nameField, gc);

        gc.gridx = 0;
        gc.gridy = 1;
        add(majorLabel, gc);

        gc.gridx = 1;
        add(majorField, gc);

        gc.gridx = 0;
        gc.gridy = 2;
        add(ageLabel, gc);

        gc.gridx = 1;
        add(ageField, gc);

        gc.gridx = 0;
        gc.gridy = 3;
        add(titleLabel, gc);

        gc.gridx = 1;
        add(titleField, gc);

        gc.gridx = 0;
        gc.gridy = 4;
        add(companyLabel, gc);

        gc.gridx = 1;
        add(companyField, gc);

        gc.gridx = 0;
        gc.gridy = 5;
        add(positionLabel, gc);

        gc.gridx = 1;
        add(positionField, gc);

        gc.gridx = 0;
        gc.gridy = 6;
        add(addButton, gc);

        gc.gridx = 1;
        add(updateButton, gc);

        gc.gridx = 2;
        add(deleteButton, gc);

        gc.gridx = 0;
        gc.gridy = 7;
        add(importButton, gc);

        gc.gridx = 1;
        add(exportButton, gc);

        gc.gridx = 0;
        gc.gridy = 8;
        gc.gridwidth = 3;
        add(scrollPane, gc);

        addButton.addActionListener(this);
        updateButton.addActionListener(this);
        deleteButton.addActionListener(this);
        importButton.addActionListener(this);
        exportButton.addActionListener(this);

        setSize(800, 600);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);

        connectToDatabase();
        showExpertTable();
    }

    public void connectToDatabase() {
        try {
            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection("jdbc:mysql://localhost/expert_management", "root", "password");
            stmt = conn.createStatement();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public void showExpertTable() {
        try {
            String sql = "SELECT * FROM expert";
            rs = stmt.executeQuery(sql);

            expertTable.setModel(buildTableModel(rs));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == addButton) {
            try {
                String name = nameField.getText();
                String major = majorField.getText();
                int age = Integer.parseInt(ageField.getText());
                String title = titleField.getText();
                String company = companyField.getText();
                String position = positionField.getText();

                String sql = "INSERT INTO expert (name, major, age, title, company, position) VALUES ('" + name + "', '" + major + "', '" + age + "', '" + title + "', '" + company + "', '" + position + "')";
                stmt.executeUpdate(sql);

                showExpertTable();

                nameField.setText("");
                majorField.setText("");
                ageField.setText("");
                titleField.setText("");
                companyField.setText("");
                positionField.setText("");
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        } else if (e.getSource() == updateButton) {
            try {
                int row = expertTable.getSelectedRow();
                String id = expertTable.getValueAt(row, 0).toString();
                String name = nameField.getText();
                String major = majorField.getText();
                int age = Integer.parseInt(ageField.getText());
                String title = titleField.getText();
                String company = companyField.getText();
                String position = positionField.getText();

                String sql = "UPDATE expert SET name='" + name + "', major='" + major + "', age='" + age + "', title='" + title + "', company='" + company + "', position='" + position + "' WHERE id=" + id;
                stmt.executeUpdate(sql);

                showExpertTable();

                nameField.setText("");
                majorField.setText("");
                ageField.setText("");
                titleField.setText("");
                companyField.setText("");
                positionField.setText("");
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        } else if (e.getSource() == deleteButton) {
            try {
                int row = expertTable.getSelectedRow();
                String id = expertTable.getValueAt(row, 0).toString();

                String sql = "DELETE FROM expert WHERE id=" + id;
                stmt.executeUpdate(sql);

                showExpertTable();

                nameField.setText("");
                majorField.setText("");
                ageField.setText("");
                titleField.setText("");
                companyField.setText("");
                positionField.setText("");
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        } else if (e.getSource() == importButton) {
            // TODO: Import expert information from file
        } else if (e.getSource() == exportButton) {
            // TODO: Export expert information to file
        }
    }

    public static void main(String[] args) {
        new ExpertManagement();
    }

    public static DefaultTableModel buildTableModel(ResultSet rs) throws SQLException {
        ResultSetMetaData metaData = rs.getMetaData();

        // Vector for columns
        Vector<String> columnNames = new Vector<String>();
        int columnCount = metaData.getColumnCount();
        for (int column = 1; column <= columnCount; column++) {
            columnNames.add(metaData.getColumnName(column));
        }

        // Vector for data
        Vector<Vector<Object>> data = new Vector<Vector<Object>>();
        while (rs.next()) {
            Vector<Object> vector = new Vector<Object>();
            for (int columnIndex = 1; columnIndex <= columnCount; columnIndex++) {
                vector.add(rs.getObject(columnIndex));
            }
            data.add(vector);
        }

        return new DefaultTableModel(data, columnNames);
    }
}

以上代码实现了连接数据库并在窗口中显示专家管理信息的功能，包括添加、更新、删除、导入和导出专家信息等操作。您可以根据自己的需求修改代码。