go中操作json

package main

import (
	"encoding/json"
	"fmt"
)

type Server struct {
	ServerName string `json:"serverName`
	ServerIP   string `json:"serverIP`
}

type Serverslice struct {
	Servers []Server `json:"servers`
}

func main() {
	var s Serverslice
	//str := `{"servers":[{"serverName":"Shanghai_VPN", "serverIP":"127.0.0.1"}, {"serverName": "Beijing_VPN", "serverIP":"127.0.0.2"}]}`
	//json.Unmarshal([]byte(str), &s)
	//fmt.Println(s)
	s.Servers = append(s.Servers, Server{ServerName: "Shanghai_VPN", ServerIP: "127.0.0.1"})
	s.Servers = append(s.Servers, Server{ServerName: "Beijing_VPN", ServerIP: "127.0.0.2"})
	b, err := json.Marshal(s)
	if err != nil {
		fmt.Println("json err: ", err)
	}
	fmt.Println(string(b))

}