ios的jSON

http://blog.zachwaugh.com/post/309924609/how-to-use-json-in-cocoaobjective-c
http://stackoverflow.com/questions/10033302/iphone-app-development-with-json
http://stackoverflow.com/questions/7892427/which-json-library-to-use-on-iphone-to-consume-gson-jackson-generated-json

http://www.cocoachina.com/bbs/read.php?tid=86667&page=1%26%23160%3B
http://www.cocoachina.com/bbs/read.php?tid=125232&page=1