编码后的内容，可以在浏览器中直接打开，提示：先去掉回车
data类型的Url大致有下面几种形式
data:,<文本数据> data:text/plain,<文本数据> data:text/html,<HTML代码> data:text/html;base64,<base64编码的HTML代码> data:text/css,<CSS代码> data:text/css;base64,<base64编码的CSS代码> data:text/javascript,<Javascript代码> data:text/javascript;base64,<base64编码的Javascript代码> data:image/gif;base64,base64编码的gif图片数据 data:image/png;base64,base64编码的png图片数据 data:image/jpeg;base64,base64编码的jpeg图片数据 data:image/x-icon;base64,base64编码的icon图片数据
Python3代码
# -*- coding: utf-8 -*- import base64 import re import uuid def decode_image(src): """ 解码图片 :param src: 图片编码 eg: src="data:image/gif;base64,R0lGODlhMwAxAIAAAAAAAP/// yH5BAAAAAAALAAAAAAzADEAAAK8jI+pBr0PowytzotTtbm/DTqQ6C3hGX ElcraA9jIr66ozVpM3nseUvYP1UEHF0FUUHkNJxhLZfEJNvol06tzwrgd LbXsFZYmSMPnHLB+zNJFbq15+SOf50+6rG7lKOjwV1ibGdhHYRVYVJ9Wn k2HWtLdIWMSH9lfyODZoZTb4xdnpxQSEF9oyOWIqp6gaI9pI1Qo7BijbF ZkoaAtEeiiLeKn72xM7vMZofJy8zJys2UxsCT3kO229LH1tXAAAOw==" :return: str 保存到本地的文件名 """ # 1、信息提取 result = re.search("data:image/(?P<ext>.*?);base64,(?P<data>.*)", src, re.DOTALL) if result: ext = result.groupdict().get("ext") data = result.groupdict().get("data") else: raise Exception("Do not parse!") # 2、base64解码 img = base64.urlsafe_b64decode(data) # 3、二进制文件保存 filename = "{}.{}".format(uuid.uuid4(), ext) with open(filename, "wb") as f: f.write(img) return filename def encode_image(filename): """ 编码图片 :param filename: str 本地图片文件名 :return: str 编码后的字符串 eg: src="data:image/gif;base64,R0lGODlhMwAxAIAAAAAAAP/// yH5BAAAAAAALAAAAAAzADEAAAK8jI+pBr0PowytzotTtbm/DTqQ6C3hGX ElcraA9jIr66ozVpM3nseUvYP1UEHF0FUUHkNJxhLZfEJNvol06tzwrgd LbXsFZYmSMPnHLB+zNJFbq15+SOf50+6rG7lKOjwV1ibGdhHYRVYVJ9Wn k2HWtLdIWMSH9lfyODZoZTb4xdnpxQSEF9oyOWIqp6gaI9pI1Qo7BijbF ZkoaAtEeiiLeKn72xM7vMZofJy8zJys2UxsCT3kO229LH1tXAAAOw==" """ # 1、文件读取 ext = filename.split(".")[-1] with open(filename, "rb") as f: img = f.read() # 2、base64编码 data = base64.b64encode(img).decode() # 3、图片编码字符串拼接 src = "data:image/{ext};base64,{data}".format(ext=ext, data=data) return src if __name__ == '__main__': # 下载百度首页logo保存到本地 baidu.png # https://www.baidu.com/img/bd_logo1.png # 编码测试 print(encode_image("baidu.png")) # src = "data:image/png;base64,iVBORw0KGgoAAAA..." # 解码测试 # print(decode_image(src))
