解决post请求form-data格式后端拿不到数据问题

在调用第三方后端接口的时候，有个接口，它要求post请求头中，content-type必须为multipart/form-data的时候，一开始就是显示指定content-type格式，也就是在请求头headers={‘Content-Type’: multipart/form-data}，导致form-data数据丢失，导致后端拿不到数据，一直报错

解决方法： 1、不要在请求头设置headers，直接传个files字段，这样就会自动识别为multipart/form-data格式，如果files字段没有值，可以自己构建一个，比如files={ ‘a’: None }

import reqeusts
request.post(url, data=data, files=files)

2、显示设置请求头，也就是上面出现bug的做法，但是需要做个格式

payload = f"""
	--{
            
     boundary} Content-Disposition: form-data; name="advertiser_id" 11111 
    --{
            
     boundary} Content-Disposition: form-data; name="upload_type" UPLOAD_BY_URL 
    --{
            
     boundary} Content-Disposition: form-data; name="image_url" https://p26-sign.douyinpic.com/tos-cn-v-c9e10a/ogQzCTHJRedoTNEtRfaCteAQP2G74BHI8CvIbg~tplv-noop.image?x-expires=3366331560&x-signature=MkKM7TWMpNJ9xTcE0eCs%2Fxk%2Bps4%3D 
    --{
            
     boundary} Content-Disposition: form-data; name="filename" 0331-维达山茶花湿厕纸-原生2-y 
    --{
            
     boundary}-- 
    """

案例代码

import requests
import uuid

def upload_image():
    open_api_url_prefix = "https://ad.oceanengine.com/open_api/"
    uri = "2/file/image/ad/"
    url = open_api_url_prefix + uri
    files = None

    # 生成边界值
    boundary = ----WebKitFormBoundary + str(uuid.uuid4())

    # 构建 multipart/form-data 格式的数据
    payload = f"""--{
            
     boundary}
        Content-Disposition: form-data; name="advertiser_id"
        
        17026
        --{
            
     boundary}
        Content-Disposition: form-data; name="upload_type"
        
        UPLOAD_BY_URL
        --{
            
     boundary}
        Content-Disposition: form-data; name="image_url"
        
        https://www.baidu.com
        --{
            
     boundary}
        Content-Disposition: form-data; name="filename"
        
        文件名
        --{
            
     boundary}--
	    """
	
	    headers = {
          
   
	        "Access-Token": "xxxx",
	        "Content-Type": f"multipart/form-data; boundary={
            
     boundary}"
	    }
	
	    rsp = requests.post(url, data=payload.encode(utf-8), headers=headers)
	    rsp_data = rsp.json()

    return rsp_data
    if __name__== __main__:
    upload_image()