golang 启动多个端口服务

1. 使用NewServeMux ，启动多个端口

package main

import (
    "fmt"
    "github.com/gin-gonic/gin"
    "net/http"
)

func main()  {
    //gin 框架
    engin := gin.Default()
    engin.GET("/api", func(context *gin.Context) {
        fmt.Println(context.Request.URL, context.Request.Host)
    })

    //浏览器访问 http://localhost:8080/api
    mux := http.NewServeMux()
    mux.HandleFunc("/api", myHandler)
    go http.ListenAndServe(":8080", mux)

    //浏览器访问 http://localhost:8081/api
    mux1 := http.NewServeMux()
    mux1.HandleFunc("/api", myHandler1)
    go http.ListenAndServe(":8081", mux1)

    //浏览器访问 http://localhost:8082/api
    go http.ListenAndServe(":8082", engin)

    fmt.Println("启动成功")

    //阻塞程序
    select {}

}

func myHandler(res http.ResponseWriter, req *http.Request)  {
    fmt.Println(req.URL, req.Host)
}

func myHandler1(res http.ResponseWriter, req *http.Request)  {
    fmt.Println(req.URL, req.Host)
}