自动将md文档中的图片上传到简书

最近在写东西时发现一些文档里图片较多（自己一般都是用md写东西），每次上传时经常要花时间手动去拉图上传，简书不能在拷贝md文档时直接自动上传所有图片，非常麻烦；感觉简书这方面做得也很差，完全没体验可言。还是自己动手写个小工具吧，花了点时间研究下简书的图片上传接口，写个python脚本匹配文档中的图片位置，自动上传后并替换图片链接，以后可以省点事。

工具

Charles - 用来抓包分析图片上传数据报文流程（只在分析图片上传的HTTP包流程时用）

Chrome插件EditThisCookie - 用来导出简书的cookies（导出格式为name=value pairs）

流程与代码

• 用Chrome浏览器登录简书账号，然后导出jianshu的cookies，保存为文件（导出格式为name=value pairs），文件名为cookies.txt并与脚本文件保存在同一目录，用于上传图片时的会话验证。简书的cookies有效期好像是一月，时间够用了。

• 运行脚本，替换完后会输出新文件output.md

  replace_md.py xxx.md
  

• 源码：

  #!/usr/bin/env python3
  
  import requests
  import json
  import os
  import sys
  import datetime
  import re
  import imghdr
  import _locale
  _locale._getdefaultlocale = (lambda *args: ['zh_CN', 'utf8'])
  
  cookie_file = 'cookies.txt'
  upload_url = 'https://upload.qiniup.com/'
  
  # get cookie from cookie file
  def getCookie(path):
      try:
          with open(path, 'r') as f:
              content = f.readlines()
              for line in content:
                  cook = line.split(';')
                  if len(cook) > 1:
                      break
  
              cookies = ''
              for str in cook:
                  if str.find('token') != -1:
                      cookies += str+';'
                  if str.find('uid') != -1:
                      cookies += str+';'
                  if str.find('sensorsdata') != -1:
                      cookies += str+';'
              return cookies
      except Exception as error:
          print(error)
  
  def uploadImage(cook_path, filepath, name='img'):
      cookStr = getCookie(cook_path)
      #print(cookStr)
      filename = os.path.basename(filepath)
      fname,suffix=os.path.splitext(filepath)
      if suffix == '':
          suffix = imghdr.what(filepath)
          filename = fname+'.'+suffix
  
      token_url = 'https://www.jianshu.com/upload_images/token.json?filename={}'.format(filename)
      headers = {
          'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36',
          'Cookie': cookStr,
      }
  
      response = requests.get(token_url, headers=headers)
      response.encoding = response.apparent_encoding
      token_key = json.loads(response.text)
      if 'token' not in token_key:
          return None
  
      with open(filepath, 'rb') as file:
          files = {
              'file': (filename, file),
              'token': (None, token_key['token']),
              'key': (None, token_key['key']),
          }
          response = requests.post(upload_url, headers=headers, files=files)
          response.encoding = response.apparent_encoding
          img_url = json.loads(response.text)['url']
          img_md = '![{text}]({img_url})'.format(text=name, img_url=img_url)
          return img_md
   
  def outputFile(path):
      try:
          with open(path, 'r') as fd, open("output.md", "w") as fd1:
              tmpPath = '__tmp__'
              content = fd.readlines()
              for line in content:
                  # match http link image
                  obj = re.search( r'!\[(.*)\]\((http.+)\)', line)
                  if obj:
                      name = obj.group(1)
                      filePath = obj.group(2)
                      with open(tmpPath, 'wb') as tmpFd:
                          ir = requests.get(filePath)
                          tmpFd.write(ir.content)
  
                      newline = uploadImage(cookie_file, tmpPath, name)
                      if newline is None:
                          print('Err: ', 'uploadImage() error!')
                      else:
                          print('Ok: ', 'uploadImage() ok!')
                          line = newline
                      
                      fd1.write(line)
                      continue
  
                  # match local file image
                  obj = re.search( r'!\[(.*)\]\((.+)\)', line)
                  if obj:
                      name = obj.group(1)
                      filePath = obj.group(2)
                      newline = uploadImage(cookie_file, filePath, name)
                      if newline is None:
                          print('Err: ', 'uploadImage() error!')
                      else:
                          print('Ok: ', 'uploadImage() ok!')
                          line = newline
  
                  fd1.write(line)
  
              if os.path.exists(tmpPath):
                  os.remove(tmpPath)
              return None
      except Exception as error:
          print('err:', error)
  
  
  def main(path):
      if os.path.exists(path):
          outputFile(path)
          return True
      else:
          print("File path %s not exist!" % (path))
          return False
  
  if __name__ == '__main__':
      if len(sys.argv) <= 1:
          print("Usage error: replace_md.py %path")
          sys.exit(-1)
      else:
          main(sys.argv[1])
      sys.exit(0)
  
  

  基本流程：

  • 使用正则匹配出md文档中的图片位置
  • 根据图片位置的链接
    • 如果是本地图片地址，直接上传，返回图片链接
    • 如果是网络图片链接，先下载再上传，返回图片链接
  • 用返回的图片链接替换md文档中原来的图片位置