## 1.安装Gin Go版本要求在1.15+ ``` go get -u github.com/gin-gonic/gin ``` ## 2.代码示例 ~~~ package main import ( "github.com/gin-gonic/gin" "net/http" ) func main() { r := gin.Default() r.GET("/", func(c *gin.Context) { c.JSON(http.StatusOK, gin.H{ "message": "HelloWorld", }) }) r.Run() // 默认为8080 } ~~~ ## 3.API参数 ## 4.自定义404信息 ~~~ r.NoRoute(func(c *gin.Context) { c.String(http.StatusNotFound, "404 not found111111111") }) ~~~