Unable to Upload the File into DropBox From Salesforce Using /Files_put API ?

Question

Hi All,
&nbsp; &nbsp; &nbsp; &nbsp;I tried to upload the file into Drop Box account From Salesforce Using /files_put Dropbox Api.But am always getting following Error :&nbsp;[Status=Bad Request, StatusCode=400]{"error": "Body may not be empty"}.
Hereby My Code as follows,
public class DropboxController{&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; public DropboxController()&nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; }&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; public PageReference DropAuth()&nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; string body= 'Test';&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; List&lt;Account &gt; acclist = [Select id,name , CreatedDate , lastModifiedDate from Account limit 10];&nbsp; &nbsp; &nbsp; &nbsp; string header = 'Record Id, Name , Created Date, Modified Date 
';&nbsp; &nbsp; &nbsp; &nbsp; string finalstr = header ;&nbsp; &nbsp; &nbsp; &nbsp; for(Account a: acclist)&nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;string recordString = '"'+a.id+'","'+a.Name+'","'+a.CreatedDate+'","'+a.LastModifiedDate +'"
';&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;finalstr = finalstr +recordString;&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; blob csvBlob = Blob.valueOf(finalstr);&nbsp; &nbsp; &nbsp; &nbsp; System.debug('CSV :' + finalstr);&nbsp; &nbsp; &nbsp; &nbsp; HttpRequest request = new HttpRequest();&nbsp; &nbsp; &nbsp; &nbsp; request.setMethod('POST');&nbsp; &nbsp; &nbsp; &nbsp; request.setEndpoint('https://content.dropboxapi.com/1/files_put/auto/Test.csv');&nbsp; &nbsp; &nbsp; &nbsp; Blob headerValue = Blob.valueOf('5na5z4tgwqgqee3' + ':' + '&lt;redacted&gt;');&nbsp; &nbsp; &nbsp; &nbsp; String authorizationHeader = 'BASIC ' + EncodingUtil.base64Encode(headerValue);&nbsp; &nbsp; &nbsp; &nbsp; request.setHeader('Authorization', authorizationHeader); &nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; request.setBodyAsBlob(csvBlob);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; System.debug(request);&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; Http hp = new Http();&nbsp; &nbsp; &nbsp; &nbsp; HttpResponse response = hp.send(request);&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; System.debug(' RESP ::: ' + response.getBody());&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&nbsp; &nbsp; &nbsp; return null;&nbsp; &nbsp; }&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;}
Please advise.
Thanks,
Vivek.K

Greg-DB · Answer

First, you're using basic auth with your app key and secret, but this endpoint requires access to a specific&nbsp;Dropbox account, which is accomplished using an account-specific access token. You can find more information on using OAuth with the&nbsp;Dropbox API here:
https://www.dropbox.com/developers/reference/oauthguide
If you need to implement the OAuth 2 flow manually, this blog post may be helpful:
https://www.dropbox.com/developers/blog/45/using-oauth-20-with-the-core-api
The actual error you're getting indicates that the server didn't&nbsp;receive any data in the request's body. It looks like you're trying to set it using&nbsp;request.setBodyAsBlob, but it appears that didn't work, since the server didn't&nbsp;receive anything. You'll need to debug your usage of&nbsp;HttpRequest to determine why nothing is getting sent up.

Vivek K.2 · Answer

Thanks for your suggestion Gregory.
&nbsp;If it's possible could you please share some /files_put api working code using apex.
&nbsp;
&nbsp;

Vivek K.2 · Answer

Hi Gregory,
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;I updated my code like below,even though am getting &nbsp;Error :&nbsp;[Status=Bad Request, StatusCode=400]{"error": "Body may not be empty"}.
&nbsp;
public class DropboxController{ public Blob FileBody{get;set;}  public DropboxController() {  }  public PageReference DropAuth() {  HttpRequest request = new HttpRequest(); request.setMethod('POST'); request.setTimeout(60000); request.setEndpoint('https://api-content.dropbox.com/1/files_put/auto/Test.txt'); Blob val = csvFileBody;  Blob accesstoken = Blob.valueOf('&lt;redacted&gt;'); String AccToken = 'Bearer ' + EncodingUtil.base64Encode(accesstoken); request.setHeader('Authorization', AccToken);  request.setBodyAsBlob(val);  System.debug(val);  Http hp = new Http(); HttpResponse response = hp.send(request);  System.debug(' RESP ::: ' +response +''+ response.getBody());  return null; }  }
Can i have your suggestion .
Thanks,
Vivek K

Greg-DB · Answer

[Cross-linking for reference:&nbsp;https://stackoverflow.com/questions/36997863/unable-to-upload-the-file-into-dropbox-from-salesforce-using-files-put-api ]
I don't have any sample code for Apex specifically unfortunately.
I see you've updated your code to set the OAuth 2 access token. It looks like you're encoding it though? It shouldn't be encoded, and should just be passed up to the API as the original string.
By the way, I redacted your access token, but you should revoke it to be safe since you posted it publicly.&nbsp;
Have you been able to troubleshoot the your code.HTTP client to check what data it is or isn't actually sending up?

Vivek K.2 · Answer

Thanks for your response @Gregory.
I got the solution.Hereby my working code as follows,public&nbsp;class&nbsp;DropboxController{&nbsp;&nbsp;&nbsp;&nbsp;//Fetched&nbsp;from&nbsp;URL&nbsp;&nbsp;&nbsp;&nbsp;Public&nbsp;String&nbsp;code&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;Public&nbsp;String&nbsp;accesstoken;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;DropboxController()&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;code&nbsp;=&nbsp;ApexPages.currentPage().getParameters().get('code')&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//Get&nbsp;the&nbsp;access&nbsp;token&nbsp;once&nbsp;we&nbsp;have&nbsp;code&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if(code&nbsp;!=&nbsp;''&nbsp;&amp;&amp;&nbsp;code&nbsp;!=&nbsp;null)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;AccessToken()&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;PageReference&nbsp;DropAuth()&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;system.debug('UPLOAD'+accessToken&nbsp;);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//Authenticating&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//&nbsp;&nbsp;PageReference&nbsp;pg&nbsp;=&nbsp;new&nbsp;PageReference('https://www.dropbox.com/1/oauth2/authorize?response_type=code&amp;client_id=XXXX&amp;redirect_uri=https://c.cs20.visual.force.com/apex/DropboxPage&amp;state=Mytesting')&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;null;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;void&nbsp;AccessToken()&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//Getting&nbsp;access&nbsp;token&nbsp;from&nbsp;dropbox&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;String&nbsp;tokenuri&nbsp;=&nbsp;'https://api.dropbox.com/1/oauth2/token?grant_type=authorization_code&amp;code='+code+'&amp;redirect_uri=https://c.cs20.visual.force.com/apex/DropboxPage';&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;HttpRequest&nbsp;req&nbsp;=&nbsp;new&nbsp;HttpRequest();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;req.setEndpoint(tokenuri);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;req.setMethod('POST');&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;req.setTimeout(60*1000);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Blob&nbsp;headerValue&nbsp;=&nbsp;Blob.valueOf('XXXX'&nbsp;+&nbsp;':'&nbsp;+&nbsp;'YYYY');&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;String&nbsp;authorizationHeader&nbsp;=&nbsp;'BASIC&nbsp;'&nbsp;+&nbsp;EncodingUtil.base64Encode(headerValue);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;req.setHeader('Authorization',&nbsp;authorizationHeader);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Http&nbsp;h&nbsp;=&nbsp;new&nbsp;Http();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;String&nbsp;resp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;HttpResponse&nbsp;res&nbsp;=&nbsp;h.send(req);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;resp&nbsp;=&nbsp;res.getBody();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;JSONParser&nbsp;parser&nbsp;=&nbsp;JSON.createParser(resp);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while&nbsp;(parser.nextToken()&nbsp;!=&nbsp;null)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;((parser.getCurrentToken()&nbsp;==&nbsp;JSONToken.FIELD_NAME)){&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;String&nbsp;fieldName&nbsp;=&nbsp;parser.getText();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;parser.nextToken();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if(fieldName&nbsp;==&nbsp;'access_token')&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;accesstoken&nbsp;=&nbsp;parser.getText();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;system.debug('accessToken==&gt;'+accessToken&nbsp;);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;System.debug('&nbsp;You&nbsp;can&nbsp;parse&nbsp;the&nbsp;response&nbsp;to&nbsp;get&nbsp;the&nbsp;access&nbsp;token&nbsp;:::&nbsp;'&nbsp;+&nbsp;resp);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;string&nbsp;token&nbsp;=&nbsp;'https://api-content.dropbox.com/1/files_put/auto/ProjectListNew.csv';&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;HttpRequest&nbsp;r&nbsp;=&nbsp;new&nbsp;HttpRequest();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;r.setEndpoint(token);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;r.setHeader('Authorization','Bearer&nbsp;'&nbsp;+accesstoken);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;r.setMethod('PUT');&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;r.setTimeout(60000);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;List&lt;Project2__c&gt;&nbsp;projlist&nbsp;=&nbsp;[Select&nbsp;id,name,Project_Name__c,Project_Type__c,Project_Status__c&nbsp;from&nbsp;Project2__c&nbsp;LIMIT&nbsp;10];&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;string&nbsp;header&nbsp;=&nbsp;'Record&nbsp;Id,&nbsp;Project&nbsp;Key,&nbsp;Project&nbsp;Name,&nbsp;Project&nbsp;Type,&nbsp;Project&nbsp;Status&nbsp;
';&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;string&nbsp;finalstr&nbsp;=&nbsp;header&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for(Project2__c&nbsp;a:&nbsp;projlist)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;string&nbsp;recordString&nbsp;=&nbsp;'"'+a.id+'","'+a.Name+'","'+a.Project_Name__c+'","'+a.Project_Type__c+'","'+a.Project_Status__c+'"
';&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;finalstr&nbsp;=&nbsp;finalstr&nbsp;+recordString;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Blob&nbsp;csvBlob&nbsp;=&nbsp;Blob.valueOf(finalstr);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;r.setBodyAsBlob(csvBlob);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Http&nbsp;h1&nbsp;=&nbsp;new&nbsp;Http();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;HttpResponse&nbsp;res1&nbsp;=&nbsp;h1.send(r);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;string&nbsp;resp1&nbsp;=&nbsp;res1.getBody();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;System.debug('Upload&nbsp;Success&nbsp;::&nbsp;'&nbsp;+&nbsp;resp1);&nbsp;&nbsp;&nbsp;}}
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Unable to Upload the File into DropBox From Salesforce Using /Files_put API ?

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