I am trying to fetch few pdf and xls files from SFDC org1 and store it in SFDC org2. I could get the contentversion versondata body using the service '/services/data/v42.0/sobjects/ContentVersion/06890000003oTkqAAE/VersionData'. But I am not sure what is the format of the response and how to store it in SFDC org2. I tried the below code, it creates pdf and xls files but the files are corrupted.
Http h = new Http();
HttpRequest req = new HttpRequest();
req.setEndpoint(URL.getSalesforceBaseUrl().toExternalForm() + '/services/data/v42.0/sobjects/ContentVersion/06890000003oTkqAAE/VersionData');
req.setMethod('GET');
req.setHeader('Authorization', 'OAuth ' + UserInfo.getSessionId());
req.setHeader('Content-Type', 'application/json');
HttpResponse res = h.send(req);
contentVersion cv = new contentVersion();
cv.FirstPublishLocationId = '5002aikl0000aes';
cv.Title = 'Solution pdf';
cv.PathOnClient = 'Solution.pdf';
cv.VersionData = Blob.valueof( res.getbody() );
insert cv;
Superb Abhishek, the forums gave me the pointer to find the solution. Below code works and migrates attachments in right format.
HttpRequest req = new HttpRequest();
req.setEndpoint(URL.getSalesforceBaseUrl().toExternalForm() + '/services/data/v42.0/sobjects/ContentVersion/06890000003oTkqAAE/VersionData');
req.setMethod('GET');
req.setHeader('Authorization', 'OAuth ' + UserInfo.getSessionId());
req.setHeader('Content-Type', 'application/json');
HttpResponse res = h.send(req);
contentVersion cv = new contentVersion();
cv.FirstPublishLocationId = '5002aikl0000aes';
cv.Title = 'Solution pdf';
cv.PathOnClient = 'Solution.pdf';
cv.VersionData = res.getBodyAsBlob(); // Directly convert response body into blob content.
insert cv;
