mysql 存储读取图片

CREATE TABLE images (
    id INT AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(255),
    image_data LONGBLOB
);

import mysql.connector
from mysql.connector import Error

def insert_image(name, file_path):
    try:
        connection = mysql.connector.connect(host='localhost',
                                             database='testdb',
                                             user='root',
                                             password='password')
        cursor = connection.cursor()
        
        with open(file_path, 'rb') as file:
            binary_data = file.read()
        
        insert_query = "INSERT INTO images (name, image_data) VALUES (%s, %s)"
        cursor.execute(insert_query, (name, binary_data))
        connection.commit()
        print("Image inserted successfully")
    except Error as e:
        print(f"Error: {e}")
    finally:
        if connection.is_connected():
            cursor.close()
            connection.close()

insert_image('example.jpg', 'path/to/example.jpg')

import mysql.connector
from mysql.connector import Error

def retrieve_image(image_id, output_path):
    try:
        connection = mysql.connector.connect(host='localhost',
                                             database='testdb',
                                             user='root',
                                             password='password')
        cursor = connection.cursor()
        
        select_query = "SELECT image_data FROM images WHERE id = %s"
        cursor.execute(select_query, (image_id,))
        record = cursor.fetchone()
        
        if record:
            with open(output_path, 'wb') as file:
                file.write(record[0])
            print("Image retrieved successfully")
        else:
            print("Image not found")
    except Error as e:
        print(f"Error: {e}")
    finally:
        if connection.is_connected():
            cursor.close()
            connection.close()

retrieve_image(1, 'path/to/output.jpg')