多个 Json 条目到一个结构

Question

I have multiple JSON files, I want to put into one call in an API.

Following is my struct:

type Demo struct {
    ChannelID int      `json:"channelId"`
    SeriesName string  `json:"seriesName"`
}

And I have 5 JSON files, I need to put into this struct, and pass on into an API call.

How do I do that?

Here's my code:

func GetJson(search string) *models.Demo {
    jsonStruct := models.Demo{}
    assetIds := DecodeXml(search)
    for i := 0; i < len(assetIds); i++ {
        epgData, err := http.Get(assets.EpgUrl + fmt.Sprintf("%v", assetIds[i]))
        if err != nil {
            log.Fatal(err)
        }
        jsonData, err := ioutil.ReadAll(epgData.Body)
        if err != nil {
            log.Fatal(err)
        }           
        json.Unmarshal(jsonData, &jsonStruct)
    }
    return &jsonStruct
}

For my API call, I use gin-gonic, with following code:

type Search struct {
    Search string `form:"search"`
}


func main() {
    r := gin.Default()
    r.GET("/search", func(c *gin.Context) {
        var search Search
        if c.ShouldBind(&search) == nil {
            c.JSON(200, actions.GetJson(search.Search))
        }
    })

    r.Run()
}

Does anyone have an idea?

Answer 1

You declare a single variable jsonStruct and repeatedly overwrite its value. You should create a slice of Demo values and fill the slice.

This code example uses and returns a slice of Demo values.

func GetJson(search string) []models.Demo {
    assetIds := DecodeXml(search)
    jsonStructs := make([]models.Demo, len(assetIds))
    for i := 0; i < len(assetIds); i++ {
        epgData, err := http.Get(assets.EpgUrl + fmt.Sprintf("%v", assetIds[i]))
        if err != nil {
            log.Fatal(err)
        }
        jsonData, err := ioutil.ReadAll(epgData.Body)
        if err != nil {
            log.Fatal(err)
        }           
        epgData.Body.Close()
        json.Unmarshal(jsonData, &jsonStructs[i])
    }
    return jsonStructs
}