使用requests调用Django接口出现Response无streaming属性的AttributeError问题

用requests库调用接口时无法获取200成功状态码，推测原因可能是common.py文件存在bug、请求发送方式错误或响应接收处理不当。以下是技术细节及修复方案：

调用脚本（原代码） #

import requests
try:
 post_data = {'langs': langs, 'langs_json': []}
 # filling post_data..
 response = requests.post(api_call_url, json=post_data, verify=False)
return JsonResponse({}, safe=False, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
except Exception as e:
return JsonResponse({}, safe=False, status=status.HTTP_500_INTERNAL_SERVER_ERROR)

调用脚本核心问题 #

代码缩进错误：return语句不在try块内，无论requests请求是否成功，都会直接返回500状态码，导致永远无法获取200响应。

服务端脚本（原代码） #

@csrf_exempt
def api_end_point(request):
    try:
        data = json.loads(request.body.decode('utf-8-sig'))
        with open(os.path.join(r'assets\i18n', f'fr.json'), 'w', encoding='utf-8-sig') as f:
            json.dump(data['langs_json'][0], f)
        with open(os.path.join(r'assets\i18n', f'en.json'), 'w', encoding='utf-8-sig') as f:
            json.dump(data['langs_json'][1], f)
        # All works above.. the issue has something to do with the response itself..
        response = JsonResponse(dict(status=True), safe=False, status=status.HTTP_200_OK)
        response.status_code = 200 # trying to solve..
        return response
    except Exception as e:
        response = JsonResponse(dict(status=False), safe=False, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
        response.status_code = 500 # trying to solve..
        return response

错误信息 #

File "C:\Users\***\Desktop\****\*****\*****\venv\lib\site-packages\django\middleware\common.py", line 112, in process_response
if not response.streaming and not response.has_header('Content-Length'):
AttributeError: 'Response' object has no attribute 'streaming'

common.py代码片段 #

def process_response(self, request, response):
    """
    When the status code of the response is 404, it may redirect to a path
    with an appended slash if should_redirect_with_slash() returns True.
    """
    # If the given URL is "Not Found", then check if we should redirect to
    # a path with a slash appended.
    if response.status_code == 404 and self.should_redirect_with_slash(request):
        return self.response_redirect_class(self.get_full_path_with_slash(request))

    # Add the Content-Length header to non-streaming responses if not
    # already set.
    if not response.streaming and not response.has_header('Content-Length'):
        response.headers['Content-Length'] = str(len(response.content))

    return response

问题分析与修复方案 #

1. 修复调用脚本的缩进逻辑 #

调整return语句的缩进，使其在try块内根据请求结果返回对应状态码：

import requests
from django.http import JsonResponse
from django.http import HttpResponseStatus as status

def call_api_view(request):
    try:
        post_data = {'langs': langs, 'langs_json': []}
        # 填充post_data逻辑
        response = requests.post(api_call_url, json=post_data, verify=False)
        # 根据接口响应返回结果
        if response.ok:
            return JsonResponse({'status': True}, safe=False, status=status.HTTP_200_OK)
        else:
            return JsonResponse({'status': False}, safe=False, status=response.status_code)
    except Exception as e:
        return JsonResponse({'error': str(e)}, safe=False, status=status.HTTP_500_INTERNAL_SERVER_ERROR)

2. 解决服务端的AttributeError问题 #

错误提示说明Django中间件处理的response对象不是Django的HttpResponse子类（缺少streaming属性），大概率是代码中导入了非Django的Response类（比如requests的Response），或错误返回了非Django响应对象。

• 检查服务端代码的导入语句，确保没有错误导入：

  # 确保导入的是Django的JsonResponse
  from django.http import JsonResponse
  

• 确认视图函数返回的始终是Django的HttpResponse及其子类（如JsonResponse），不要返回其他库的Response对象。

内容的提问来源于stack exchange，提问作者SDIdo