Python爬虫入门教程 56-100 python爬虫高级技术之验证码篇2-开放平台OCR技术

    def get_accesstoken(self):
        res = requests.post(self.url.format(self.key,self.secret),headers=self.header)
        content = res.text
        if (content):
            return json.loads(content)["access_token"]

import requests
import json

import base64

import urllib.request, urllib.parse

class GetCode(object):

    def __init__(self):
        self.url = "https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id={}&client_secret={}"
        self.api = "https://aip.baidubce.com/rest/2.0/ocr/v1/general_basic?access_token={}"
        self.header = {
            "Content-Type":'application/json; charset=UTF-8'
        }

        self.key = "你的KEY"
        self.secret = "你的SECRET"

 def init_table(self,threshold=155):
        table = []
        for i in range(256):
            if i < threshold:
                table.append(0)
            else:
                table.append(1)
        return table



    def opt_image(self):
        im = Image.open("66.png")

        im = im.convert('L')
        im = im.point(self.init_table(), '1')
        im.save('66_s.png')
        return "66_s.png"

    def get_file_content(self,file_path):
        with open(file_path, 'rb') as fp:
            base64_data = base64.b64encode(fp.read())
            s = base64_data.decode()

            data = {}
            data['image'] = s

            decoded_data = urllib.parse.urlencode(data)
            return decoded_data


    def show_code(self):
        image = self.get_file_content(self.opt_image())
        headers = {
            "Content-Type": "application/x-www-form-urlencoded"
        }
        res = requests.post(self.api.format(self.get_accesstoken()),headers=headers,data=image)
        print(res.text)

from aip import AipOcr


# 定义常量
APP_ID = '15736693'
API_KEY = '你的KEY'
SECRET_KEY = '你的SECRET'

# 初始化文字识别
aipOcr=AipOcr(APP_ID, API_KEY, SECRET_KEY)

# 读取图片
filePath = "1.jpg"

def get_file_content(filePath):
    with open(filePath, 'rb') as fp:
        return fp.read()

# 定义参数变量
options = {
    'detect_direction': 'true',
    'language_type': 'CHN_ENG',
}

# 网络图片文字文字识别接口
result = aipOcr.webImage(get_file_content(filePath),options)


print(result)