基于golang的Json选择器

使用 https://github.com/mangenotwork/gathertool 库的JsonFind()函数来选择json

func JsonFind(jsonStr, find string) (interface{}, error) {}

参数说明
// JsonFind 按路径寻找指定json值
// @find : 寻找路径，与目录的url类似， 下面是一个例子：
// json:  {a:[{b:1},{b:2}]}
// find=/a/[0]  =>   {b:1}
// find=a/[0]/b  =>   1

json 例子：

{"reason":"查询成功!","result":{"city":"苏州","realtime":{"temperature":"17","humidity":"69","info":"阴","wid":"02","direct":"东风","power":"2级","aqi":"30"},"future":[{"date":"2021-10-25","temperature":"12\/21℃","weather":"多云","wid":{"day":"01","night":"01"},"direct":"东风"},{"date":"2021-10-26","temperature":"13\/21℃","weather":"多云","wid":{"day":"01","night":"01"},"direct":"东风转东北风"},{"date":"2021-10-27","temperature":"13\/22℃","weather":"多云","wid":{"day":"01","night":"01"},"direct":"东北风"},{"date":"2021-10-28","temperature":"13\/21℃","weather":"多云转晴","wid":{"day":"01","night":"00"},"direct":"东北风"},{"date":"2021-10-29","temperature":"14\/21℃","weather":"多云转小雨","wid":{"day":"01","night":"07"},"direct":"东北风"}]},"error_code":0
}

如上面的json，要选择出future的第一个的date的值，

import (gt "github.com/mangenotwork/gathertool""log"
)func main(){// txt 是上文的jsonlog.Println( gt.JsonFind(txt, "/result/future/[0]/date"))
}

输出: 2022/07/29 10:23:08 2021-10-25 < nil >

更多例子

package mainimport (gt "github.com/mangenotwork/gathertool""log"
)func main(){txt := `{"reason":"查询成功!","result":{"city":"苏州","realtime":{"temperature":"17","humidity":"69","info":"阴","wid":"02","direct":"东风","power":"2级","aqi":"30"},"future":[{"date":"2021-10-25","temperature":"12\/21℃","weather":"多云","wid":{"day":"01","night":"01"},"direct":"东风"},{"date":"2021-10-26","temperature":"13\/21℃","weather":"多云","wid":{"day":"01","night":"01"},"direct":"东风转东北风"},{"date":"2021-10-27","temperature":"13\/22℃","weather":"多云","wid":{"day":"01","night":"01"},"direct":"东北风"},{"date":"2021-10-28","temperature":"13\/21℃","weather":"多云转晴","wid":{"day":"01","night":"00"},"direct":"东北风"},{"date":"2021-10-29","temperature":"14\/21℃","weather":"多云转小雨","wid":{"day":"01","night":"07"},"direct":"东北风"}]},"error_code":0
}`jx1 := "/result/future/[0]/date"jx2 := "/result/future/[0]"jx3 := "/result/future"log.Println(gt.JsonFind(txt, jx1))log.Println(gt.JsonFind2Json(txt, jx2))log.Println(gt.JsonFind2Json(txt, jx3))log.Println(gt.JsonFind2Map(txt, jx2))log.Println(gt.JsonFind2Arr(txt, jx3))}

输出

2022/07/29 10:23:08 2021-10-25 <nil>
2022/07/29 10:23:08 {"date":"2021-10-25","direct":"东风","temperature":"12/21℃","weather":"多云","wid":{"day":"01","night":"01"}} <nil>
2022/07/29 10:23:08 [{"date":"2021-10-25","direct":"东风","temperature":"12/21℃","weather":"多云","wid":{"day":"01","night":"01"}},{"date":"2021-10-26","direct":"东风转东北风","temperature":"13/21℃","weather":"多云","wid":{"day":"01","night":"01"}},{"date":"2021-10-27","direct":"东北风","temperature":"13/22℃","weather":"多云","wid":{"day":"01","night":"01"}},{"date":"2021-10-28","direct":"东北风","temperature":"13/21℃","weather":"多云转晴","wid":{"day":"01","night":"00"}},{"date":"2021-10-29","direct":"东北风","temperature":"14/21℃","weather":"多云转小雨","wid":{"day":"01","night":"07"}}] <nil>
2022/07/29 10:23:08 map[date:2021-10-25 direct:东风 temperature:12/21℃ weather:多云 wid:map[day:01 night:01]] <nil>
2022/07/29 10:23:08 [map[date:2021-10-25 direct:东风 temperature:12/21℃ weather:多云 wid:map[day:01 night:01]] map[date:2021-10-26 direct:东风转东北风 temperature:13/21℃ weather:多云 wid:map[day:01 night:01]] map[date:2021-10-27 direct:东北风 temperature:13/22℃ weather:多云 wid:map[day:01 night:01]] map[date:2021-10-28 direct:东北风 temperature:13/21℃ weather:多云转晴 wid:map[day:01 night:00]] map[date:2021-10-29 direct:东北风 temperature:14/21℃ weather:多云转小雨 wid:map[day:01 night:07]]] <nil>

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基于golang的Json选择器

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