发布时间: 2015-01-03 07:54:00
refer to: http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html
这只是个 规格说明，用来建议各大browser厂商所遵循，而事实上的类型目前只有GET, POST。 restful中所使用的仅仅是：GET, POST, PUT, DELETE。
HTTP 请求，分成两类：
安全方法（safe methods): GET/HEAD: 不会改变服务器的状态。（与PUT,POST, DELETE不同）
idempotence 方法:
又分成：
GET： 发起请求，不改变服务器状态。
OPTIONS ：The POST method is used to request that the origin server accept the entity enclosed in the request as a new subordinate of the resource identified by the Request-URI in the Request-Line. POST is designed to allow a uniform method to cover the following functions:
- Annotation of existing resources;
- Posting a message to a bulletin board, newsgroup, mailing list,
or similar group of articles;
- Providing a block of data, such as the result of submitting a
form, to a data-handling process;
- Extending a database through an append operation.
HEAD： 跟GET一样，发起请求，不改变服务器状态，但是不需要返回content.
POST ：新建数据
PUT ： 修改数据
DELETE ： 删除数据
TRACE：The TRACE method is used to invoke a remote, application-layer loop- back of the request message. The final recipient of the request SHOULD reflect the message received back to the client as the entity-body of a 200 (OK) response
CONNECT: 告诉服务器，我是一个tunnel. This specification reserves the method name CONNECT for use with a proxy that can dynamically switch to being a tunnel
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