只下载json-lib的jar还不行，JSON-LIB的依赖库如下

EZMorph
下载地址http://ezmorph.sourceforge.net
Commons
Collections http://jakarta.apache.org/commons/collections/
Commons Lang
http://jakarta.apache.org/commons/lang/
Commons BeanUtils
http://commons.apache.org/beanutils/
The Logging Component
http://commons.apache.org/logging/

eclise 导出的libraries如下

[code lang=”xml” linenum=”off”]





[/code]