[IPhone开发]发送Http请求(POST GET)的方法
http://aminby.net/2010/07/iphone-develop-how-to-send-http-request/
iphone之http post数据 http://hi.baidu.com/popln/blog/item/9ca2be5987d79594800a18fb.html
详谈iPhone中网络请求http://www.e800.com.cn/articles/2011/0801/492410.shtml