json - Jackson and App Engine causing NoClassDefFoundError -

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there few questions this, jackson 1.x. i'm using jackson 2.4.3 app engine sdk 1.9.15 , i'm getting following error:

java.lang.noclassdeffounderror: org/codehaus/jackson/map/objectmapper

i've tried using jackson-all-1.9.11.jar still same issue.

if import repackaged jackson com.google.appengine.repackaged works fine, following warning makes sound bad thing do.

warning: ..... not part of app engine's supported api. discouraged using class - app may stop working in production @ moment.

usually error indicates required jar missing /web-inf/lib folder, or there several conflicting jars (with same classpath) in folder.

you may not error in ide if added jar project's classpath. if use eclipse, start selecting project , looking problems tab. may see warning there specified resource not available on server. right click on warning , choose "copy..." option.

otherwise, manually add jar /web-inf/lib folder.


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