topic Re: Using ContentReader for transformation in Alfresco Archive

Using ContentReader for transformation

abruzzi — Thu, 04 Sep 2014 16:42:48 GMT

A number of years ago (v3.1.2) I integrated our OCR server (Abbyy Recognition Server) with Alfresco. The integration was a quick hack that I wrote. Basically it used a PHP script to make the SOAP call to the OCR server, and the PHP was called by a RuntimeExec bean.Now I'm trying to significantly b

Re: Using ContentReader for transformation

mrogers — Thu, 04 Sep 2014 18:44:20 GMT

The difference is down to content encoding. You are converting character encodings too much. FileStr will be a java string. You then convert that to us-ASCII bytes. ( which may not handle all chars ) And then you base 64 encode that ASCII stream.

But why use soap at all? Use cmis or web scripts instead.

Re: Using ContentReader for transformation

abruzzi — Mon, 08 Sep 2014 15:45:08 GMT

SOAP is required by the OCR server–short of writing windows to the windows COM API, it is the only way to programmatically process a file. All the methods for generating base64 encoding seem to need me to step through a byte array. When I run the .getContentString() method, what encoding is alfresco using?

Re: Using ContentReader for transformation

kaynezhang — Tue, 09 Sep 2014 02:15:18 GMT

When content is uploaded into alfresco ,alfresco will try to guess the encoding of it(the default encoding is UTF-8). After that the encoding will be used to in getContentString() method.
You can call getContentInputStream instead of getCotentString,and convert it to byte arry,then encode the byte arry using base64 encoder.


            // read from the stream into a byte[]
            InputStream is = getContentInputStream();
            ByteArrayOutputStream os = new ByteArrayOutputStream();
            org.springframework.util.FileCopyUtils.copy(is, os);  
            byte[] bytes = os.toByteArray();
      //encode it using base64 encoder.
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