This blog article shows you how to r Read image file from Varchar field in MySQL database Python. The code snippet below reads image file from Varchar field in MySQL database.
import base64
import mysql.connector
def retrieve_png_from_mysql(output_path, db_config):
# Connect to the MySQL database
connection = mysql.connector.connect(**db_config)
cursor = connection.cursor()
# Retrieve the encoded string from the database
query = “SELECT signed FROM mysign ORDER BY id DESC LIMIT 1”
cursor.execute(query)
result = cursor.fetchone()
if result is None:
raise ValueError(“No data found in the database”)
encoded_string = result[0]
# Decode the base64 string
decoded_bytes = base64.b64decode(encoded_string)
# Write the decoded bytes to a new PNG file
with open(output_path, ‘wb’) as file:
file.write(decoded_bytes)
# Close the connection
cursor.close()
connection.close()
if __name__ == “__main__”:
# Define the path to your PNG file and your database configuration
png_path = ‘sign.png’
db_config = {
‘user’: ‘root’,
‘password’: ‘password’,
‘host’: ‘127.0.0.1’,
‘database’: ‘poc’
}
# Retrieve the PNG file from the MySQL database and save it as signnew.png
output_path = ‘signnew.png’
retrieve_png_from_mysql(output_path, db_config)
Also: Write image file to Varchar field in MySQL database Python
Source code download: https://github.com/chanmmn/python/tree/main/2024/ReadPngMySQL?WT.mc_id=DP-MVP-36769
Reference: https://www.geeksforgeeks.org/base64-b64encode-in-python/?WT.mc_id=DP-MVP-36769
