国税总局发票查验平台验证码获取与识别

使用指北

1. pip install invoice-captcha

2. 调用示例：

   import requests
   from invoice_captcha.utils import get_captcha_params, parse_captcha_resp, kill_captcha_fast, ua
   
   CAPTCHA_URL = "https://fpcy.guangdong.chinatax.gov.cn/NWebQuery/yzmQuery"
   
   
   # 发票代码
   key1 = "011111111111"
   # 发票号码
   key2 = "11111111"
   
   # # 开票日期
   # key3 = "20200603"
   # # 校验码或发票金额
   # key4 = "000000"
   
   
   def fetch_captcha(invoice_code, invoice_no):
   
       sess = requests.Session()
   
       # 使用代理，需要自备代理
       # sess.proxies = proxy
       sess.headers = {"User-Agent": ua.random}
   
       # 获取验证码请求参数
       payload = get_captcha_params(
           invoice_code=invoice_code, invoice_no=invoice_no
       )
   
       # 通过官网获取验证码
       r = sess.get(CAPTCHA_URL, params=payload)
   
       # 验证码请求参数解密
       plain_dict = parse_captcha_resp(r)
   
       # 验证码请求返回明文
       # key1 图片base64
       # key4 验证码需要识别的颜色代码
       print("解密参数 --- ", plain_dict)
   
       # 调用识别测试接口
       captcha_text = kill_captcha_fast(
           plain_dict, 
         	# 默认API有使用次数限制，可联系作者QQ：27009583，测试独立接口
           # api="http://kerlomz-ac86u.asuscomm.com:19811/captcha/v1"
       )
   
       # 输出识别结果
       print("识别结果 --- ", captcha_text)
       
       
   if __name__ == '__main__':
       for i in range(10):
           fetch_captcha(key1, key2)
   

输出结果:

解密参数 ---  {'key1': 'iVBORw0KGgoA...5ErkJggg==', 'key2': '2020-06-16 16:56:36', 'key3': '9636e07df9aae6bd0483c5f6ea1ecbdc', 'key4': '03', 'key5': '2'}
识别结果 ---  xm8
解密参数 ---  {'key1': 'iVBORw0KGgoA...UVORK5CYII=', 'key2': '2020-06-16 16:56:42', 'key3': 'd202f846119faa08a0e95eec48ca1bfe', 'key4': '01', 'key5': '2'}
识别结果 ---  命初