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

Hi Gregory,

                 I updated my code like below,even though am getting  Error : [Status=Bad Request, StatusCode=400]{"error": "Body may not be empty"}.

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('<redacted>');
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