圖片和base64編碼互轉

import base64
import cv2# 將圖片base64字符串生成圖片文件.
def base64_to_img(base64_code,save_img_path):"""根據base64生成圖片.:param base64_code: 圖片的base64文件:param save_img_path: 生成的圖片路徑:returns: None"""try:imgdata = base64.b64decode(base64_code)with open(save_img_path, mode="wb") as f:f.write(imgdata)except Exception as ex:print(ex)# 將圖片文件轉換成base64字符串
def img_to_base64(img_file):'''將圖片轉換成base64字符串:param img_file:圖片文件:return:base64字符串'''try:with open(img_file, 'rb') as f:img_data = f.read()uri = base64.b64encode(img_data)return uri.decode('utf-8')except Exception as ex:print(ex)# 將圖片文件轉換成base64字符串(cv2讀取)
def img_to_base64_bycv2(img_file):'''將圖片轉換成base64字符串:param img_file:圖片文件:return:base64字符串'''try:im = cv2.imread(img_file)data = cv2.imencode('.png', im)[1]str_base64 = base64.b64encode(data.tobytes()).decode('utf8')return str_base64except Exception as ex:print(ex)