golang web项目热部署 air 库

项目地址： https://github.com/cosmtrek/air/blob/master/README-zh_cn.md
Air 是为 Go 应用开发设计的另外一个热重载的命令行工具。只需在你的项目根目录下输入 air，然后把它放在一边，专注于你的代码即可。

例子

创建一个gin项目

创建一个gin项目，这里以gin为例，其他go web项目都可以。

package main

import "github.com/gin-gonic/gin"

func main() {
    r := gin.Default()
    r.GET("/ping", func(c *gin.Context) {
        c.JSON(200, gin.H{
        "message": "golang-tech-stack.com",
        })
    })
    r.Run() // listen and serve on 0.0.0.0:8080
}

但是这么部署的缺点就在于，你每次修改都要手动进行重新编译，效率十分低下，显然是不符合我们摸鱼原则的§(￣▽￣)§

下载安装air

使用 Go 的版本为 1.16 或更高:

go install github.com/cosmtrek/air@latest

注意：这里要用 install，而不是get，install 会生成可执行文件，并且保证你的gopath/bin，已经配置到了系统环境变量下面。

启动air

air

初始化air

air init

测试

现在修改你的项目，保存后会自动热部署。

自定义

在命令行中执行

air init 	

将会在当前目录下生成.air.toml

root = "."
testdata_dir = "testdata"
tmp_dir = "tmp"

[build]
  args_bin = []
  bin = "tmp\\main.exe"
  cmd = "go build -o ./tmp/main.exe ."
  delay = 0
  exclude_dir = ["assets", "tmp", "vendor", "testdata"]
  exclude_file = []
  exclude_regex = ["_test.go"]
  exclude_unchanged = false
  follow_symlink = false
  full_bin = ""
  include_dir = []
  include_ext = ["go", "tpl", "tmpl", "html"]
  include_file = []
  kill_delay = "0s"
  log = "build-errors.log"
  poll = false
  poll_interval = 0
  rerun = false
  rerun_delay = 500
  send_interrupt = false
  stop_on_error = false

[color]
  app = ""
  build = "yellow"
  main = "magenta"
  runner = "green"
  watcher = "cyan"

[log]
  main_only = false
  time = false

[misc]
  clean_on_exit = false

[screen]
  clear_on_rebuild = false
  keep_scroll = true

问题

遇到 “command not found: air” 或 “No such file or directory” 该怎么办？

echo 'export PATH=$PATH:$GOROOT/bin:$GOPATH/bin' >> ~/.bashrc
echo 'export PATH=$PATH:$(go env GOPATH)/bin' >> ~/.bashrc
source ~/.bashrc