How to post a request with form-data using Robotframework

Robot Framework
1

curl -X ‘POST’
'https://localhost:8443/ABCD/9/XYZ?operation=CREATE&reason=10’
-H ‘accept: application/json’
-H ‘Content-Type: multipart/form-data’
-F ‘file=@bulk_insert_sample.txt;type=text/plain’

I tried this → 

Create Session    bulk_download    ${BASE_URL}    verify=False
${headers}=    Create Dictionary    Authorization=Bearer ${ACCESS_TOKEN}    accept=application/json
${file_content}=    Get File    ${FILE_PATH}
&{multipart_file}=    Create Dictionary    file=( ${FILE_NAME}, ${file_content}, ${CONTENT_TYPE})
${response}=    POST On Session    bulk_download    ${ENDPOINT_CREATE}    headers=${headers}    files=${multipart_file}
Should Be Equal As Numbers    ${response.status_code}    200

But unfortunately getting , file.getContentType()= null from BE, though the file content and path is valid

2

Hi Nikhilesh,

A couple of things I notice right away:

  • The line starting ${headers}= Create Dictionary is missing the Content-Type: header
  • The line starting &{multipart_file}= Create Dictionary, ${CONTENT_TYPE} should be the file’s content type (e.g. text/plain) not the multipart/form-data content type

where 'content-type' is a string defining the content type of the given file

Hopefully that’s all you need :crossed_fingers:

Dave.

3

curl -X ‘POST’
'https://localhost:8443/ABCD/9/XYZ?operation=CREATE&reason=10’
-H ‘accept: application/json’
-H ‘Content-Type: multipart/form-data’
-F ‘file=@bulk_insert_sample.txt;type=text/plain’

this culr command was working

But

*** Settings ***
Library RequestsLibrary
Library BuiltIn
Library String
Library OperatingSystem

*** Variables ***
${BASE_URL} https://localhost:8003/
${ACCESS_TOKEN} eyJhbGciOiNiJ9.eyJzdWIiOiEwMH0.pMIZh-HxHFrdHmKMjg
${ENDPOINT_CREATE} /eq/9/optxyz?opt=CREATE&rn=10
${FILE_PATH} C:/*******/bulkinsert.txt

*** Test Cases ***
Test Upload Success
[Documentation] Test case that simulates different download scenarios
Create Session Session_download ${BASE_URL} verify=False
${headers}= Create Dictionary Authorization=Bearer ${ACCESS_TOKEN} accept=application/json Content-Type=Multipart/form-data
${file_content}= Get File ${FILE_PATH}
&{multipart_file}= Create Dictionary file=( test.txt, ${FILE_CONTENT}, text/plain)
${response}= POST On Session Session_download ${ENDPOINT_CREATE} headers=${headers} files=${multipart_file}
Should Be Equal As Numbers ${response.status_code} 200

is returning

2024-09-01 03:49:56.799 9010c85a-0160-409a-95dc-9b3b22fc0a47 ERROR - org.springframework.web.multipart.MultipartException: Failed to parse multipart servlet request

“INTERNAL_SERVER_ERROR”,“description”:“Failed to parse multipart servlet request”

4

Hi Nikhilesh,

I think you need to change this line:

${file_content}=    Get File    ${FILE_PATH}

with this:

${file_content}=    Get File For Streaming Upload    ${FILE_PATH}

Also FYI watch your variable names ${file_content} is not the same as ${FILE_CONTENT}

Dave.

5

I change as per your suggestion but the error is same

2024-09-01 04:20:36.723 15a2bd3e-0f15-42d9-8a74-98023c25c550 ERROR - org.springframework.web.multipart.MultipartException: Failed to parse multipart servlet request

image
image1781×1605 459 KB

6

Hi Nikhilesh,

I wasn’t sure where to guide you from here, but after thinking on it a bit, I would try running the curl command with a -v switch and saving the request headers and request body from that command and compare it to what you have from requests library

Look at the content-length header and make sure they are the same size when uploading the same file

Then check the other headers and see if any are missing or extra.

Dave.

7

Hi Nikhilesh,

I also noticed these line breaks:

image
image1088×44 41.8 KB

They looked a little odd to me, which made me look close and notice the & on &{multipart_files} on the POST On Session line, I think on that line it should be a $ not &, so you could try that too.

Dave.

8

I tried with a different way →

File Valid
${headers}= Create Dictionary Authorization=Bearer ${ACCESS_TOKEN} accept=application/json Content-Type=multipart/form-data
Create Session bulk_upload ${BASE_URL} verify=False
${response}= POST On Session bulk_upload ${ENDPOINT_BULK_UPLOAD} headers=${headers} files={“file”: (“bulkinsert.txt”, open(“${FILE_PATH}”, “rb”), “${CONTENT_TYPE}”)}
Should Be Equal As Numbers ${response.status_code} 200

Now getting this error__>

${response} = RequestsLibrary . POST On Session bulk_upload ${ENDPOINT_BULK_UPLOAD} headers=${headers} files={“file”: (“bulkinsert.txt”, open(“${FILE_PATH}”, “rb”), “${CONTENT_TYPE}”)}

Documentation: Sends a POST request on a previously created HTTP Session.
Start / End / Elapsed: 20240912 09:21:52.465 / 20240912 09:21:52.474 / 00:00:00.009

09:21:52.468 FAIL ValueError: cannot encode objects that are not 2-tuples

9

Hi Nikhilesh,

At least that error is telling you what’s wrong:
This tuple is a 3-tuple not a 2-tuple

(“bulkinsert.txt”, open(“${FILE_PATH}”, “rb”), “${CONTENT_TYPE}”)

try changing it to:

(“bulkinsert.txt”, open(“${FILE_PATH}”, “rb”))

I know the documentation said it supports 3-tuple and 4-tuples, but perhaps you found a bug in bulk_upload or the documentation?

Dave.

10

I am able to fix the issue. I use this

File Valid
${headers}= Create Dictionary Authorization=Bearer ${ACCESS_TOKEN} accept=application/json
Create Session bulk_upload ${BASE_URL} verify=False
${file_content}= Get File ${FILE_PATH}
${file_tuple}= Create List bulkinsert.txt ${file_content} ${CONTENT_TYPE}
${file}= Create Dictionary file=${file_tuple}
${response}= POST On Session bulk_upload ${ENDPOINT_BULK_UPLOAD} headers=${headers} files=${file}
Should Be Equal As Numbers ${response.status_code} 200

Thank you for your kind support :slight_smile:

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