java代码修改数据库里图片

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

public class UpdateImageInDatabase {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String user = "username";
        String password = "password";
        String imagePath = "path/to/image.jpg";
        int imageId = 1;

        try (Connection conn = DriverManager.getConnection(url, user, password);
             PreparedStatement pstmt = conn.prepareStatement("UPDATE images SET image_data = ? WHERE id = ?")) {

            File imageFile = new File(imagePath);
            try (FileInputStream fis = new FileInputStream(imageFile)) {
                pstmt.setBinaryStream(1, fis, (int) imageFile.length());
                pstmt.setInt(2, imageId);
                int rowsUpdated = pstmt.executeUpdate();
                if (rowsUpdated > 0) {
                    System.out.println("Image updated successfully.");
                } else {
                    System.out.println("Failed to update image.");
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}