json 生成/解析

项目地址：
https://github.com/Jeffail/gabs

用法：

1. 生成：

    package main
    import (
        "fmt"
        "github.com/Jeffail/gabs/v2"
    )
    func main() {
        data := map[string]interface{}{
            "code": 1,
            "msg": "成功",
            "data": []int{
                1,2,3,
            },
        }
        jsonObj := gabs.New()
        jsonObj.Set(data,"data")
        output := jsonObj.String()
        fmt.Println(output)
    }
    // 输出
    {"data":{"code":1,"data":[1,2,3],"msg":"成功"}}

2. 解析：

    package main
    import (
        "fmt"
        "github.com/Jeffail/gabs/v2"
    )
    func main() {
        json := `{"data":{"code":1,"data":[1,2,3],"msg":"成功","obj":{"name":"lee","height":"168"}}}`
        jsonParsed, _ := gabs.ParseJSON([]byte(json))
        code, _ := jsonParsed.Search("data", "code").Data().(float64)
        msg, _ := jsonParsed.Search("data", "msg").Data().(string)
        fmt.Println(code,msg)
        for _, child := range jsonParsed.S("data","data").Children() {
            fmt.Println(child.Data().(float64))
        }
        for key, child := range jsonParsed.S("data","obj").ChildrenMap() {
            fmt.Println(key, child.Data().(string))
        }
    }
    // 输出
    1 成功
    1
    2
    3
    name lee
    height 168