请求的方式get post put delete.
get是请求数据。
post是发送数据。
http状态码:
http://baike.baidu.com/link?url=ZiD_RLpJWzq7HeE3qjLPVeTSwHxJmLl7_I9mBvQ60HmJOqdt5fd7FH3YnDbnyrWWsYQGkJ1wJ87An0ODSLSYw_
http的6种请求方法：
http://wenku.baidu.com/link?url=NYqTcBNtmPP86_7xx849uZeD7ZAz2qPnaIFmEI1u6kTcAbIcfEbxx1ptY1ett3u2KNuiqxZPbr_-XiYb5eMK0pVj03FADE3hoeewTISmJqi