gin: 初始化一个gin项目

一，创建项目

$ mkdir mediabank
$ cd mediabank/
$ go mod init mediabank
go: creating new go.mod: module mediabank
$ go get github.com/gin-gonic/gin@latest

二，代码中使用gin

创建文件:

$ vi main.go

代码:

package main
// 导入gin包
import "github.com/gin-gonic/gin"

// 入口函数
func main() {
    // 初始化一个http服务对象
    r := gin.Default()

    // 设置一个get请求的路由，url为/ping, 处理函数（或者叫控制器函数）是一个闭包函数。
    r.GET("/ping", func(c *gin.Context) {
        // 通过请求上下文对象Context, 直接往客户端返回一个json
        c.JSON(200, gin.H{
            "message": "pong",
        })
    })

    r.Run() // 监听并在 0.0.0.0:8080 上启动服务
}

 

运行:

$ go build
$ ./mediabank 
[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    /ping                     --> main.main.func1 (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

三，测试效果

访问：

http://192.168.219.3:8080/ping

如图: