REST API Post Files call.

Question

I am trying to get the /files POST REST call to work. 
 I am using Postman with the following: 
 POST 
 URL: base+/ws-api/v1/files 
 Header: Token=sessionId from login call 
 I go to the body tab and select the file in question that I want to upload. 
 
 The CURL is: 
 curl -X GET \ baseURL/ws-api/v1/files \ -H 'cache-control: no-cache' \ -H 'postman-token: bd26351d-cf3b-aa17-8c45-70c444203910' \ -H 'token: 1933081325'

This is the error I get: 
 { "errors": [ { "code": 500, "type": "SERVER", "message": "Required List parameter 'filename' is not present" } ] }

I know that I'm probably just doing something wrong, I'm just not sure what and how to deal with this error.

Taiki Takada · Accepted Answer

I tried on Postman by myself. If you are trying to upload a file: 
 
1. Select POST in the URL area. 
2. Specify a URL like, /ws-api/v1/files?token=800262019 
3. In the Body tab, click the form-data option. 
4. Add a new key with the name "file", select a type of the value as 'File', and then specify a file to upload as the value. 
5. Click the Send button. 
 
You will get a response in JSON, including 'internalName' which can be used for further calls like creating new projects. 
The actual uploaded files will be saved in the temporary folder.

Andrew Gurney · Answer

Getting this code to run in Java was harder than I thought. I got it up and running in Postman with the information provided, but for some reason I couldn't get it working in Java. Since this is inevitabily going to be something that others are going to try here is the code that worked for me. private T restPostFileFormData(String sessionId, String endpoint, ContentBody contentBody, Class returnType) { try { URL url = new URL( + endpoint); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setDoOutput(true); connection.setUseCaches(false); connection.setRequestMethod("POST"); connection.addRequestProperty("token", sessionId); connection.setRequestProperty("Connection", "Keep-Alive"); connection.setRequestProperty("Cache-Control", "no-cache"); String boundary = "--" + UUID.randomUUID() + "--"; MultipartEntityBuilder builder = MultipartEntityBuilder.create(); builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE); builder.setBoundary(boundary); connection.addRequestProperty("content-type", "multipart/form-data; boundary=" + boundary); // Binary file content builder.addPart("file", contentBody); HttpEntity entity = builder.build(); entity.writeTo(connection.getOutputStream()); connection.connect(); if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) { throw new InterchangeException( "Status Code: " + connection.getResponseMessage() + " Message: " + connection.getResponseCode()); } ObjectMapper mapper = new ObjectMapper(); return mapper.readValue(connection.getInputStream(), returnType); } catch (Exception e) { LOG.warn(Utils.getDetailedErrorMessage(e)); } return null; } In order to make this code work you will need to create a Class that is structured like the response. You will also need to correctly input the base URL to get to the application for your needs.

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REST API Post Files call.