add jdk7 And Expose annotation support

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#1 add jdk7 And Expose annotation support

Status: open

Owner: nobody

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Priority: 5

Updated: 2012-10-23

Created: 2012-10-23

Private: No

add jdk7 support ,
add Expose annotation, (borrowed from Gson) , to customerize whether a field should be included in json.

based on svn revision : 1517.