go 读取json文件 转成map

import "encoding/json"
    
    ptjsonpath:="./pt.json"
	f, err := os.Open(ptjsonpath)
	if err != nil {
		fmt.Println("open file err = ", err)
		return
	}

	defer f.Close()

	siteinfos:=make(map[string]Siteinfo)
	decoder := json.NewDecoder(f)
	err = decoder.Decode(&siteinfos)
	if err != nil {
		fmt.Printf("json decode has error:%v\n", err)
	}
	fmt.Println("json read done well")
	fmt.Print(siteinfos)
	fmt.Println(siteinfos["1"].Name)