网页post 上传文件请求

# -*-coding:utf8-*-
# !/usr/bin/env python

import requests, json
import base64


class PdfOcr(object):
    def __init__(self):
        self.url = 'xxxx'

    def ocr_pdf(self, filepath):
        with open(filepath, "rb") as imageFile:
            image_str = base64.b64encode(imageFile.read())

        bodytmp = {
            "image_base64": image_str,
            # "template_name": name
        }
        headers = {
            'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
            'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36'
        }
        res = requests.post(self.url, data=bodytmp, headers=headers, timeout=30)
        html = res.content.decode('utf8')
        main_content = json.loads(html)
        rest = main_content['result']
        result = ''
        if rest is None:
            return None
        for i in rest:
            result += i['words']
        return result


if __name__ == '__main__':
    F = PdfOcr()
    fp = '20170507104235.pdf'
    # name = "fhx_zg_template"
    output = F.ocr_pdf(fp)
    print(output)