RESTful design Style

See the following URLs for a simple overview and The use of front- end IOS

Http://www.ruanyifeng.com/blog/2011/09/restful.html

Http://www.cnblogs.com/artech/p/restful-web-api-02.html

First, the characteristics of RESTful

(1) resource specified by URI

(2) operations on resources, including acquisition, creation, modification, and deletion, correspond exactly to the get, POST, put, and Delete methods provided by the HTTP protocol

(3) manipulating resources through the representation of resources

(4) The expression of a resource can be Xml/html/json

Second, State transformation (Transfer)

Accessing a Web site represents an interactive process between the client and the server. In this process, data and state changes are bound to be involved.

The Internet Communication Protocol HTTP protocol is a stateless protocol. This means that all States are saved on the server side. Therefore, if the client wants to operate the server, there must be some way to make the server side "state Transfer". And this transformation is based on the expression layer, so is the "Expression Layer state transformation."

The method that the client uses, can only be the HTTP protocol. Specifically, there are four verbs in the HTTP protocol that represent the mode of operation: GET, POST, PUT, DELETE. They correspond to four basic operations: get is used to get a resource, post is used to create a new resource (and can also be used to update resources), put is used to update resources, and delete is used to delete resources.

Iii. examples

Iv. Development and use

// HttpMethod selection means to get, create, modify, and delete data that sends JSON to the server

Request. HttpMethod = @ "POST";

[Request setvalue:@ "Application/json" forhttpheaderfield:@ "Content-type"];

// serialized object

request. Httpbody = [nsjsonserialization datawithjsonobject: obj options:0 Error:NULL];

About serialization the next article will take the POST request as an example

RESTful design Style