express + restful

express

http://www.expressjs.com.cn/

Express 是一个基于 Node.js 平台的极简、灵活的 web 应用开发框架,它提供一系列强大的特性,帮助你创建各种 Web 和移动设备应用。

http://www.expressjs.com.cn/starter/hello-world.html

var express = require('express');
var app = express();

app.get('/', function (req, res) {
  res.send('Hello World!');
});

var server = app.listen(3000, function () {
  var host = server.address().address;
  var port = server.address().port;

  console.log('Example app listening at http://%s:%s', host, port);
});

restful api

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

https://www.ibm.com/developerworks/library/ws-restful/index.html

This article suggests that in its purest form today, when it's attracting this much attention, a concrete implementation of a REST Web service follows four basic design principles:

  • Use HTTP methods explicitly.
  • Be stateless.
  • Expose directory structure-like URIs.
  • Transfer XML, JavaScript Object Notation (JSON), or both.

http://www.ruanyifeng.com/blog/2014/05/restful_api.html

https://www.cnblogs.com/imyalost/p/7923230.html

二、RESTful的特征和优点

1、客户端-服务器(Client-Server):提供服务的服务器和使用服务的客户端分离解耦;

   优点:提高客户端的便捷性(操作简单)

        简化服务器提高可伸缩性(高性能、低成本)

        允许客户端服务端分组优化,彼此不受影响

2、无状态(Stateless):来自客户的每一个请求必须包含服务器处理该请求所需的所有信息(请求信息唯一性);

   优点:提高可见性(可以单独考虑每个请求)

        提高可靠性(更容易故障恢复)

        提高了可扩展性(降低了服务器资源使用)

3、可缓存(Cachable):服务器必须让客户端知道请求是否可以被缓存?如果可以,客户端可以重用之前的请求信息发送请求;

   优点:减少交互连接数

        减少连接过程的网络时延

4、分层系统(Layered System):允许服务器和客户端之间的中间层(代理,网关等)代替服务器对客户端的请求进行回应,而客户端不需要关心与它交互的组件之外的事情;

   优点:提高了系统的可扩展性

        简化了系统的复杂性

5、统一接口(Uniform Interface):客户和服务器之间通信的方法必须是统一化的。(例如:GET,POST,PUT.DELETE)

   优点:提高交互的可见性

        鼓励单独优化改善组件

6、支持按需代码(Code-On-Demand,可选):服务器可以提供一些代码或者脚本并在客户的运行环境中执行。

   优点:提高可扩展性

express + restful

https://florianholzapfel.github.io/express-restify-mongoose/

Easily create a flexible REST interface for mongoose models

From the command line

npm install express-restify-mongoose --save

http://www.cnblogs.com/lkiversonlk/p/4878139.html

Mongo, Express Restful接口搭建

首先安装express-restify-mongoose

    npm install express-restify-mongoose --save

然后新建一个router做Restful Service,假设我们的数据类是Customer,需要一个name字段和一个可选的comment字段.

/* models.js */
var express = require('express');
var router = express.Router();
var mongoose = require("mongoose");
var resify = require("express-restify-mongoose")

mongoose.connect("mongodb://localhost/test");

resify.serve(router, mongoose.model('Customer', new mongoose.Schema(
    {
        name : {type : String, required : true},
        comment : {type : String}
    }
)))

module.exports = router;

然后把这个router注册到express里

/* in app.js */
var models = require("[models.js位置]");
...
app.use(models)

OK,现在运行server测试下: http://localhost:3000/api/v1/Customers,Restful接口已经有了~

GET http://localhost/api/v1/Customer/count
GET http://localhost/api/v1/Customer
POST http://localhost/api/v1/Customer
DELETE http://localhost/api/v1/Customer

GET http://localhost/api/v1/Customer/:id
GET http://localhost/api/v1/Customer/:id/shallow
PUT http://localhost/api/v1/Customer/:id
POST http://localhost/api/v1/Customer/:id
PATCH http://localhost/api/v1/Customer/:id
DELETE http://localhost/api/v1/Customer/:id

其它例子:

https://github.com/florianholzapfel/express-restify-mongoose/blob/master/examples/todos/todos.js

自己动手

 https://github.com/fanqingsong/web_data_visualization 

buildwebservice_resty.js

例子

const express = require('express')
const bodyParser = require('body-parser')
const methodOverride = require('method-override')
const mongoose = require('mongoose')
const restify = require('express-restify-mongoose')
const app = express()
const router = express.Router()

app.use(bodyParser.json())
app.use(methodOverride())

mongoose.connect('mongodb://localhost:27017/zhipin')

restify.serve(router, mongoose.model('summary', new mongoose.Schema({
    Technology : { type: String },                    // 技术名称
    Count : { type: Number },                        // 技术数目
})))

app.use(router)

app.listen(3000, () => {
  console.log('Express server listening on port 3000')
})

测试:

GET http://localhost:3000/api/v1/summary

GET http://localhost:3000/api/v1/summary/5b7ed6b40abe4e3714a7489a

 

 

原文地址:https://www.cnblogs.com/lightsong/p/9563360.html