1. 前言

计算机软件经历了数十年的发展，形成了多种学术流派，有面向过程编程、面向对象编程、函数式编程、面向消息编程等，这些思想究竟孰优孰劣，众说纷纭。

除了OOP外，近年出现了一些小众的编程哲学，Go语言对这些思想亦有所吸收。例如，Go语言接受了函数式编程的一些想法，支持匿名函数与闭包。再如，Go语言接受了以Erlang语言为代表的面向消息编程思想，支持goroutine和通道，并推荐使用消息而不是共享内存来进行并发编程。总体来说，Go语言是一个非常现代化的语言，精小但非常强大。

Go 语言最主要的特性：

• 自动垃圾回收
• 更丰富的内置类型
• 函数多返回值
• 错误处理
• 匿名函数和闭包
• 类型和接口
• 并发编程
• 反射
• 语言交互性

Web开发已成当今主流，Go开发社区已浮现了许多优秀的Web Framwork，本文通过3个sample简单介绍一下国人开发的Beego。
https://github.com/astaxie/beego

image.png

2. Beego安装

Download and install

• 国内可能会timeout，可以借用proxychains4 shell完成

go get github.com/astaxie/beego

Create file hello.go

package main

import "github.com/astaxie/beego"

func main(){
    beego.Run()
}

Build and run

go build hello.go
./hello

Go to http://localhost:8080

Congratulations! You've just built your first beego app.

3. Beego samples

• https://github.com/beego/samples

WebIM - Chat room demo based on long polling and WebSocket.

image.png

Todo - todo app based on beego.angularJS with API which is designed by beego

image.png

shorturl - shouturl app based on beego. API applications

$ http :8080/v1/shorten/?longurl=http://google.com
HTTP/1.1 200 OK
Content-Length: 59
Content-Type: application/json; charset=utf-8
Date: Sun, 24 Nov 2019 14:21:21 GMT
Server: beegoServer:1.12.0

{
    "UrlLong": "http://google.com",
    "UrlShort": "5laZF"
}

$ http :8080/v1/expand/?shorturl=5laZF
HTTP/1.1 200 OK
Content-Length: 59
Content-Type: application/json; charset=utf-8
Date: Sun, 24 Nov 2019 14:21:50 GMT
Server: beegoServer:1.12.0

{
    "UrlLong": "http://google.com",
    "UrlShort": "5laZF"
}

4. Refers

• Go语言教程
  https://www.runoob.com/go/go-concurrent.html
• Beego简介
  https://beego.me/docs/intro/
• Bee is a tool for helping develop with beego app framework
  https://github.com/beego/bee
• 无闻的video tutorial
  https://study.163.com/course/courseMain.htm?courseId=328001