mysql 存储图片

import mysql.connector
from mysql.connector import Error

def store_image(image_path, image_id):
    try:
        connection = mysql.connector.connect(host='localhost',
                                             database='testdb',
                                             user='root',
                                             password='password')
        cursor = connection.cursor()
        
        with open(image_path, 'rb') as file:
            binary_data = file.read()
        
        sql_insert_query = """ INSERT INTO images (id, data) VALUES (%s, %s) """
        insert_tuple = (image_id, binary_data)
        result = cursor.execute(sql_insert_query, insert_tuple)
        connection.commit()
        print("Image inserted successfully into images table", result)
    
    except Error as e:
        print("Error while connecting to MySQL", e)
    
    finally:
        if connection.is_connected():
            cursor.close()
            connection.close()
            print("MySQL connection is closed")

store_image('path_to_image.jpg', 1)

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()
        
        sql_select_query = """ SELECT data FROM images WHERE id = %s """
        cursor.execute(sql_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("No image found for the given ID")
    
    except Error as e:
        print("Error while connecting to MySQL", e)
    
    finally:
        if connection.is_connected():
            cursor.close()
            connection.close()
            print("MySQL connection is closed")

retrieve_image(1, 'output_image.jpg')