RecommenderServlet response content types for XML and JSON
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                 Key: MAHOUT-755
                 URL: https://issues.apache.org/jira/browse/MAHOUT-755
             Project: Mahout
          Issue Type: Bug
          Components: Integration
    Affects Versions: 0.6
            Reporter: Julian Bell
            Priority: Minor


In my opinion I believe the following changes should be made:

For the writeJSON method, the content type should be changed from "text/plain" 
to "application/json".  It's not as 'friendly' to some browsers but is more 
technically correct.  See http://www.ietf.org/rfc/rfc4627.txt

For the writeXML method, if you don't put the character encoding type into the 
same line at the content type, then the encoding type can be ignored and 
decoded as ASCII (see http://annevankesteren.nl/2005/03/text-xml).  So you 
could change the content type from "text/xml" to "text/xml; charset=utf-8" but 
it's probably better to change it to "application/xml".  See 
http://www.grauw.nl/blog/entry/489


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