如何在SQL中将文件插入数据库表

import java.io.File;
import java.io.FileInputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;

public class InsertFileIntoDatabase {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/database_name";
        String username = "username";
        String password = "password";
        
        String filePath = "path_to_file";
        
        try {
            // 加载数据库驱动
            Class.forName("com.mysql.jdbc.Driver");
            
            // 建立数据库连接
            Connection connection = DriverManager.getConnection(url, username, password);
            
            // 创建PreparedStatement对象
            String sql = "INSERT INTO table_name (file_data) VALUES (?)";
            PreparedStatement statement = connection.prepareStatement(sql);
            
            // 读取文件并将其转换为字节数组
            File file = new File(filePath);
            FileInputStream fileInputStream = new FileInputStream(file);
            byte[] fileData = new byte[(int) file.length()];
            fileInputStream.read(fileData);
            
            // 设置参数并执行插入操作
            statement.setBytes(1, fileData);
            statement.executeUpdate();
            
            // 关闭资源
            fileInputStream.close();
            statement.close();
            connection.close();
            
            System.out.println("文件插入成功！");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}