Let SlingPostServlet return JSON
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Key: SLING-1336
URL: https://issues.apache.org/jira/browse/SLING-1336
Project: Sling
Issue Type: New Feature
Components: Servlets
Affects Versions: Servlets Post 2.0.4
Reporter: Vidar S. Ramdal
Fix For: Servlets Post 2.0.6
>From http://markmail.org/thread/ic2752rha4iy2s2c
In many scenarios it would be nice to get JSON in response to a POST. You could
write your own post servlet to do that, but then you will not benefit from the
registered SlingPostOperations and SlingPostProcessors that are executed by the
default SlingPostServlet.
In the case of SlingPostOperation, an implementing class is passed a
HtmlResponse object when run(). The HtmlResponse object is pretty agnostic to
response format though, the only HTML related work is in the send() method.
Thus, it should be possible ot replace/extend/abstract HtmlResponse with a more
generic response object. The send() functionality is then moved to
SlingPostServlet, which determines which format to return based on these
criteria (in order):
1. The Accept HTTP header - if set to "application/json" return JSON, otherwise
return HTML
2. Possibly also an :accept form field, with the same meaning as the HTTP
header, in case it is proven that setting the HTTP header does not work in all
browsers
3. The format of the posted data - if JSON is posted (see SLING-1172), return
JSON, otherwise return HTML
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