DownloadDocumentController

@RestController
@RequiredArgsConstructor
public class DownloadDocumentController {

    private static final String APPLICATION_MS_WORD_VALUE = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";

    private final DownloadDocumentService downloadDocumentService;

    @PostMapping(value = "/download", produces = APPLICATION_MS_WORD_VALUE)
    public ResponseEntity<byte[]> downloadFile(@RequestBody String pathFile) throws IOException {
        byte[] content = downloadDocumentService.downloadFile(pathFile);

        return ResponseEntity.ok()
                             .contentLength(content.length)
                             .header(HttpHeaders.CONTENT_TYPE, APPLICATION_MS_WORD_VALUE)
                             .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=File.docx"))
                             .body(content);
    }
}

DownloadDocumentService

@Service
public class DownloadDocumentService {

    public byte[] downloadFile(String pathFile) {
        // TODO do read available resource and create byte[]
        return null;
    }

}

The issue was with the axios instance.

I have added response type to the request header, the issue was solved.

        responseType: "blob",

this was the root cause. After that I was able to download the file with response provided by 'Klian' in the comments to my question.

I'm executing python script from the command line. · I may be missing some steps below but the general way to install python is as follows. · 1. Install python · https://phoenixnap.com/kb/how-to-install-python-3-windows · 2. Create subdirectory · mkdir servicenowapis · 3. Move to the subdirectory · cd servicenowapis · 4. Create a virtualenv · python-m venv venv · 5. Activate venv · venv\Scripts\activate.bat · 6. Install request module · pip install requests · 7. Copy the script I've provided to the directory · 8. Copy and paste content of Constants.py over import statements · 9. Edit username, password · 9. Edit table_api.py to use Incident number · e.g. · get_file_attachment('INC0000002') · 10. Execute command · python test_api.py ·   · import requests · SERVICENOW_URL = 'https://.service-now.com' · SERVICENOW_USER = '' · SERVICENOW_PWD = '' · DOWNLOAD_DIR = './downloads/' · REQUEST_HEADER = {"json": {"Content-Type": "application/xml", "Accept": "application/json"}, · "png": {"Content-Type": "application/xml", "Accept": "application/png"}, · "xml": {"Content-Type": "application/xml", "Accept": "application/xml"}, · } · ATTACHMENT_API = '/api/now/attachment' · TABLE_API = '/api/now/table' · # TABLE_NAME = 'kb_knowledge' · TABLE_NAME = 'incident' · def get_table_data(table_name, param): · url = SERVICENOW_URL + TABLE_API + '/' + table_name + '?' + param · response = requests.get(url, auth=(SERVICENOW_USER, SERVICENOW_PWD), headers=REQUEST_HEADER.get('json')) · if response.status_code != 200: # if error, then exit · print('Status:', response.status_code, 'Headers:', response.headers, 'Error Response:', response.json()) · exit() · return response.json() · def get_attachment_info(sys_id): · url = SERVICENOW_URL + ATTACHMENT_API + '/' + sys_id · response = requests.get(url, auth=(SERVICENOW_USER, SERVICENOW_PWD), headers=REQUEST_HEADER.get('json')) · if response.status_code != 200: # if error, then exit · print(f'Status: {response.status_code}, Headers:{response.headers}') · exit() · return response.json() · def get_attachment(att_sys_id, file_type, download_dir): · url = SERVICENOW_URL + '/' + ATTACHMENT_API + '/' + att_sys_id + '/file' · response = requests.get(url, auth=(SERVICENOW_USER, SERVICENOW_PWD), headers=REQUEST_HEADER.get(file_type)) · if response.status_code != 200: # if error, then exit · print('Status:', response.status_code, 'Headers:', response.headers, 'Error Response:', response.json()) · exit() · with open(download_dir, 'wb') as f: · for chunk in response: · f.write(chunk) · def get_file_attachment(record_number): · param = 'sysparm_query=number=' + record_number + '&sysparam_limit=1' · file_info = get_table_data(TABLE_NAME, param).get('result') · if len(file_info) < 1: · print(f'There is no attachment to sys_id:{record_number}') · return · attachment_sys_id = file_info[0].get('sys_id') · param = 'sysparm_query=table_sys_id=' + attachment_sys_id + '&sysparam_limit=1' · kb_attachments = get_table_data('sys_attachment', param) · result = kb_attachments.get('result') · for attach_file in result: · attach_sys_id = attach_file.get('sys_id') · content_type = attach_file.get('content_type').split('/') · file_ext = content_type[1] · file_name = attach_file.get('file_name') · get_attachment(attach_sys_id, file_ext, DOWNLOAD_DIR + file_name) · if __name__ == '__main__': · # get_file_attachment('KB0010062') # knowledge base number · get_file_attachment('INC0000002') · View solution in original post