python使用requests模拟multipart/form-data请求

模拟multipart/form-data请求，会遇到：Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7RgPwjW5Gf1JZ9SX的情况。

以下使用库 requests_toolbelt 实现

安装

pip install requests_toolbelt

下面是简单的请求示例：

import os
import random
import string
import requests
from requests_toolbelt import MultipartEncoder

# 请求地址
mUrl = "http://xxxx.com"

# 传入字段
fields = {
    'username':"username",
    'password':"password",
    'type':"account",
}
# 添加自定义分割线
boundary = '----WebKitFormBoundary' + ''.join(random.sample(string.ascii_letters + string.digits, 16))
form_data = MultipartEncoder(fields,boundary=boundary)
header = {
    'Content-Type':form_data.content_type,
    'Accept': '*/*',
    'Accept-Encoding': 'gzip, deflate, br, zstd',
    'Accept-Language':'zh-CN,zh;q=0.9',
    'Connection': 'keep-alive',
}
print("headers = \n",header)
#print("form_data = \n",form_data.read().decode('utf-8'))
respon = requests.post(url=mUrl,data=form_data,headers=header)
if respon :
    response.encoding = 'utf-8'
    print("===================================")
    print(response.text)
    pass
else:
    print("未获取信息====================")
    pass

注：form_data.read().decode('utf-8') 只能调用一次，正常使用时不要调用哦！！！！！

打印显示如下：

headers = 
 {'Content-Type': 'multipart/form-data; boundary=----WebKitFormBoundaryMW7YzGio0URgt5rk', 'Accept': '*/*', 'Accept-Encoding': 'gzip, deflate, br, zstd', 'Accept-Language': 'zh-CN,zh;q=0.9', 'Connection': 'keep-alive'}
form_data = 
 ------WebKitFormBoundaryMW7YzGio0URgt5rk
Content-Disposition: form-data; name="username"

username
------WebKitFormBoundaryMW7YzGio0URgt5rk
Content-Disposition: form-data; name="password"

password
------WebKitFormBoundaryMW7YzGio0URgt5rk
Content-Disposition: form-data; name="type"

account
------WebKitFormBoundaryMW7YzGio0URgt5rk--