drgawfsf1069 2016-11-29 18:51
浏览 212

Golang JSON解码在数组上失败

I have an object like:

   a = [{
        "name": "rdj",
        "place": "meh",
        "meh" : ["bow", "blah"]
    }]

I defined a struct like:

type first struct {
    A []one
}

type one struct {
    Place string `json: "place"`
    Name string `json: "name"`
}

when I use the same in code like:

func main() {
    res, _ := http.Get("http://127.0.0.1:8080/sample/")
    defer res.Body.Close()
    var some first
    rd := json.NewDecoder(res.Body)
    err := rd.Decode(&some)
    errorme(err)
    fmt.Printf("%+v
", some)
}

I get the below error:

panic: json: cannot unmarshal array into Go value of type main.first

My understanding is:

type first defines the array and within that array is data structure defined in type one.

  • 写回答

2条回答 默认 最新

  • duanbaque4230 2016-11-29 18:58
    关注

    The JSON is an array of objects. Use these types:

    type one struct {   // Use struct for JSON object
      Place string `json: "place"`
      Name string `json: "name"`
    }
    
    ...
    
    var some []one   // Use slice for JSON array
    rd := json.NewDecoder(res.Body)
    err := rd.Decode(&some)
    

    The the types in the question match this JSON structure:

    {"A": [{
        "name": "rdj",
        "place": "meh",
        "meh" : ["bow", "blah"]
    }]}
    
    评论

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