Linux环境安装go部署运行gin框架

1、Centos7.9解压安装go1.18

[root@node01 09:21:08/usr/local]#cd /usr/local/ && tar xf go1.18.1.linux-amd64.tar.gz 

2、添加环境变量

vim /etc/profile
export GOROOT=/usr/local/go
export PATH=$GOROOT/bin:$PATH

3、检查是否成功

[root@master 09:12:24 /data/go/gin_demo]# go version
go version go1.18.1 linux/amd64

4、初始化mod

# 创建web目录
mkdir /data/go/gin_demo

# 初始化mod 用来管理go的依赖包
[root@node01 09:50:39/data/go/gin_demo]# go  mod init gin
go: creating new go.mod: module gin
go: to add module requirements and sums:
        go mod tidy

# 走国内代理下载
[root@node01 09:51:49/data/go/gin_demo]# go env -w GOPROXY=https://goproxy.cn,direct  

# 下载gin包，这是一个web框架
[root@node01 09:51:10/data/go/gin_demo]# go get github.com/gin-gonic/gin

5、编写main.go文件

[root@node01 09:38:40/data/go/gin_demo]# vim main.go
package main

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

func sayHello(c *gin.Context) {
	c.JSON(200, gin.H{
		"message": "Hello golang!",
	})
}

func main() {
	r := gin.Default() // 返回默认的路由引擎

	r.GET("/hello", sayHello)

	// 启动服务
	r.Run()
}

6、运行是否成功

[root@node01 09:52:55/data/go/gin_demo]# go run main.go                             
[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.

[GIN-debug] [WARNING] Running in "debug" mode. Switch to "release" mode in production.
 - using env:   export GIN_MODE=release
 - using code:  gin.SetMode(gin.ReleaseMode)

[GIN-debug] GET    /hello                    --> main.sayHello (3 handlers)
[GIN-debug] [WARNING] You trusted all proxies, this is NOT safe. We recommend you to set a value.
Please check https://pkg.go.dev/github.com/gin-gonic/gin#readme-don-t-trust-all-proxies for details.
[GIN-debug] Environment variable PORT is undefined. Using port :8080 by default
[GIN-debug] Listening and serving HTTP on :8080

7、访问测试