使用Python向Drupal 9.5.8上传图片时文件损坏问题求助

问题描述 #

在Drupal 9.5.8上通过JSON:API创建、更新内容实体时，内容编辑、分类关联等操作均正常，但图片上传后显示损坏。

上传前图片大小为11.1 kB，上传后变为11.3 kB，无法正常显示，网站编辑表单中直接显示图片损坏状态。

已尝试的代码 #

方案1 #

import requests
import os
from requests.auth import HTTPBasicAuth

def upload_image(image_path):
    api_url = 'https://example.com/jsonapi/node/event/a8ef729b-1fd6-4233-979a-fa0f81132dde/field_image' #?_format=json
    auth = HTTPBasicAuth('Username', 'Password')
    image_filename = os.path.basename(image_path)
    headers = {'Content-Type': 'application/octet-stream',
    'Content-Disposition': 'file; filename="{}"'.format(image_filename.replace('images/', ''))}
    multipart_form_data = {'file': (image_filename, open(image_path, 'rb'))}

    print(api_url)
    print(auth)
    print(image_filename)
    print(headers)
    
    response = requests.post(api_url, files=multipart_form_data, headers=headers, auth=auth)
    
    print(response.json())
    return None

upload_image('images/test.jpg')

方案2 #

def upload_image2(image_path):
    api_url = 'https://example.com/jsonapi/node/event/a8ef729b-1fd6-4233-979a-fa0f81132dde/field_image' #?_format=json
    auth = HTTPBasicAuth('Username', 'Password')
    image_filename = os.path.basename(image_path)
    headers = {'Accept': 'application/vnd.api+json',
            'Content-Type': 'application/octet-stream',
            'Content-Disposition': f'file; filename="{image_filename}"'
        }
    with open('images/test.jpg', 'rb') as f:
        response = requests.post(api_url, headers=headers, auth=auth, files={'test.jpg': f})
        
        print(response.json())

    return None

异常现象 #

• 给方案1的URL添加#?_format=json时会报错：

{'message': 'No route found for the specified format json. Supported formats: api_json.'}

• 给方案2的URL添加该参数无影响。

已确认的信息 #

• 未对图片进行base64编码，符合官方工单说明；
• BasicAuth可正常用于文件上传，认证环节无问题；
• 官方提供了CURL和Node.js的上传示例，但无法转换为可用的Python代码。

请问我的操作哪里出错了？

内容的提问来源于stack exchange，提问作者Chris