英文:
Python 3 send a request with a file using only standard libraries
问题
所以我有以下的代码，它使用requests库工作正常：
file_test = {'file': ('test.json', open('C:/Users/abc/test.json','rb'), 'application/json')}response = requests.post(url, files=file_test, verify=False)
这段代码按预期工作。但最近公司要求我们只使用标准库。所以我尝试使用http.client库来完成完全相同的事情：
httpHost = 'some host'uri = 'some uri'conn = http.client.HTTPSConnection(httpHost,context = ssl._create_unverified_context())with open('C:/Users/abc/test.json','rb') as file:f = file.read()headers = {'Content-Type': 'multipart/form-data; boundary=TESTabc123','Content-Length': str(len(f)),'Accept' : '*/*'}conn.request(verb, uri, body=f, headers=headers)print(conn.getresponse().status)
然而，我在上面的代码中遇到了500状态码。顺便提一下，headers部分我从Postman中复制了完全相同的内容（在Postman中，我使用相同的文件和相同的headers获得了200的状态码）。
我是否正确地做了这件事？看起来我按照正确的步骤进行了操作，但仍然得到了不希望的结果。我还尝试了使用urllib的request库，但似乎verify=False部分在那里不起作用。
我唯一能想到的问题是请求的内容长度，在Postman中，当提供错误的长度时也会得到500错误。
英文:
So I have the following Code which is working using the requests library:
file_test = {'file': ('test.json', open('C:/Users/abc/test.json','rb'), 'application/json')}response = requests.post(url, files=file_test, verify=False)
which works as expected. But recently company want us to use only standard libraries. So I went ahead to try out http.client library to accomplish the exact same thing:
httpHost = 'some host'uri = 'some uri'conn = http.client.HTTPSConnection(httpHost,context = ssl._create_unverified_context())with open('C:/Users/abc/test.json','rb') as file:f = file.read()headers = {'Content-Type': 'multipart/form-data; boundary=TESTabc123','Content-Length': str(len(f)),'Accept' : '*/*'}conn.request(verb, uri, body=f, headers=headers)print(conn.getresponse().status)
However, I am hitting a 500 status code with the above code. Just to mention, the headers part I pulled the exact same thing from postman (I was able to get a 200 on postman with the same file and same headers).
Am I doing this thing correctly? It seems like I followed everything correctly but still getting undesired results. I also tried with urllib's request library but seems like the verify=False part doesn't work on there.
The only thing I can think of is the request content length, which in postman, also gives a 500 error when wrong length is provided.
答案1
得分: 0
根据requests文档，Content-Length应该是文件中的字节数，而不是文本的长度，你可以尝试将'Content-Length': str(len(f)),改为'Content-Length': len(f),。同时确保verb = post。
如果有帮助，请告诉我 - Jack
英文:
According to the requests documentation, the Content-Length should be the number of bytes in the file, not the length of the text, could you try changing 'Content-Length': str(len(f)), to 'Content-Length': len(f),.
Also make sure verb = post.
Let me know if that Helps - Jack
答案2
得分: 0
import http.clientimport sslhttpHost = '某个主机'uri = '某个路径'boundary = 'TESTabc123'conn = http.client.HTTPSConnection(httpHost,context=ssl._create_unverified_context())with open('C:/Users/abc/test.json', 'rb') as file:f = file.read()body = (f'--{boundary}\r\n'f'Content-Disposition: form-data; name="file"; filename="test.json"\r\n''Content-Type: application/json\r\n\r\n'f'{f.decode()}\r\n'f'--{boundary}--\r\n')headers = {'Content-Type': f'multipart/form-data; boundary={boundary}','Content-Length': str(len(body)),'Accept': '*/*'}conn.request('POST', uri, body=body, headers=headers)print(conn.getresponse().status)
英文:
import http.clientimport sslhttpHost = 'some host'uri = 'some uri'boundary = 'TESTabc123'conn = http.client.HTTPSConnection(httpHost,context=ssl._create_unverified_context())with open('C:/Users/abc/test.json', 'rb') as file:f = file.read()body = (f'--{boundary}\r\n'f'Content-Disposition: form-data; name="file"; filename="test.json"\r\n''Content-Type: application/json\r\n\r\n'f'{f.decode()}\r\n'f'--{boundary}--\r\n')headers = {'Content-Type': f'multipart/form-data; boundary={boundary}','Content-Length': str(len(body)),'Accept': '*/*'}conn.request('POST', uri, body=body, headers=headers)print(conn.getresponse().status)
I think this will be better
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