Error 414 When sending invoice to Amazon MWS with _UPLOAD_VAT_INVOICE_ - amazon-web-services

Question

I'm trying to send invoices to amazon mws through _UPLOAD_VAT_INVOICE_ following the java example in this guide:
Link
pdf file is a simple invoice of 85 kb
The error is status code 414 that is "Uri too long"
Debugging original amazon class MarketplaceWebServiceClient I see this:
if( request instanceof SubmitFeedRequest ) {
// For SubmitFeed, HTTP body is reserved for the Feed Content and the function parameters
// are contained within the HTTP header
SubmitFeedRequest sfr = (SubmitFeedRequest)request;
method = new HttpPost( config.getServiceURL() + "?" + getSubmitFeedUrlParameters( parameters ) );
getSubmitFeedUrlParameters method takes every parameter and add it to querystring. One of these parameters is contentMD5 from:
String contentMD5 = Base64.encodeBase64String(pdfDocument);
So there is a very large string representing pdf file passed as parameter. This causes error 414
But that class is the original one taken from MaWSJavaClientLibrary-1.1.jar
Can anybody help me please?
Thanks

Answer 1

For the last 2 days I was working on the same problem,
I changed like this and it works now
InputStream contentStream = new ByteArrayInputStream(pdfDocument);
String contentMD5 =computeContentMD5Header(new ByteArrayInputStream(pdfDocument));
public static String computeContentMD5Header(InputStream inputStream) {
// Consume the stream to compute the MD5 as a side effect.
DigestInputStream s;
try {
s = new DigestInputStream(inputStream,
MessageDigest.getInstance("MD5"));
// drain the buffer, as the digest is computed as a side-effect
byte[] buffer = new byte[8192];
while (s.read(buffer) > 0)
;
return new String(
org.apache.commons.codec.binary.Base64.encodeBase64(s
.getMessageDigest().digest()), "UTF-8");
} catch (NoSuchAlgorithmException e) {
throw new RuntimeException(e);
} catch (IOException e) {
throw new RuntimeException(e);
}
}