Gin の使い方

mkdir gin_work && cd gin_work
go mod init gin_work
go get -u github.com/gin-gonic/gin

package main

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

func main() {
    rr := gin.Default()
    rr.GET("/ping", func(cc *gin.Context) {
        cc.JSON(200, gin.H{
            "message": "pong",
        })
    })
    rr.Run()
}

go run example.go

curl http://localhost:8080/ping

package main

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

func main() {
    router := gin.Default()

    // This handler will match /user/john but will not match /user/ or /user
    router.GET("/user/:name", func(c *gin.Context) {
        name := c.Param("name")
        c.String(http.StatusOK, "Hello %s", name)
    })

    // However, this one will match /user/john/ and also /user/john/send
    // If no other routers match /user/john, it will redirect to /user/john/
    router.GET("/user/:name/*action", func(c *gin.Context) {
        name := c.Param("name")
        action := c.Param("action")
        message := name + " is " + action
        c.String(http.StatusOK, message)
    })

    // For each matched request Context will hold the route definition
    router.POST("/user/:name/*action", func(c *gin.Context) {
//      c.FullPath() == "/user/:name/*action" // true
    })

    router.Run(":8080")
}

go run parameters.go

curl http://localhost:8080/user/john

curl http://localhost:8080/user/john/send