(Go) JSON: Nested Objects

Here we have a JSON object that contains nested JSON objects. This example demonstrates how to access the contents of the nested objects.

{
  "name": "donut",
  "image":
    {
    "fname": "donut.jpg",
    "w": 200,
    "h": 200
    },
  "thumbnail":
    {
    "fname": "donutThumb.jpg",
    "w": 32,
    "h": 32
    }
}

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    json := chilkat.NewJsonObject()

    // This is the above JSON with whitespace chars removed (SPACE, TAB, CR, and LF chars).
    // The presence of whitespace chars for pretty-printing makes no difference to the Load
    // method. 
    jsonStr := "{\"name\": \"donut\",\"image\":{\"fname\": \"donut.jpg\",\"w\": 200,\"h\": 200},\"thumbnail\":{\"fname\": \"donutThumb.jpg\",\"w\": 32,\"h\": 32}}"

    success := json.Load(jsonStr)
    if success != true {
        fmt.Println(json.LastErrorText())
        json.DisposeJsonObject()
        return
    }

    // Get the "image" object.
    imageObj := json.ObjectOf("image")
    if json.LastMethodSuccess() == false {
        fmt.Println("image object not found.")
        json.DisposeJsonObject()
        return
    }

    fmt.Println("image: fname=", *imageObj.StringOf("fname"), ", width=", *imageObj.IntOf("w"), ", height=", *imageObj.IntOf("h"))

    imageObj.DisposeJsonObject()

    // Get the "thumbnail" object.
    thumbObj := json.ObjectOf("thumbnail")
    if json.LastMethodSuccess() == false {
        fmt.Println("thumbnail object not found.")
        json.DisposeJsonObject()
        return
    }

    fmt.Println("thumbnail: fname=", *thumbObj.StringOf("fname"), ", width=", *thumbObj.IntOf("w"), ", height=", *thumbObj.IntOf("h"))

    thumbObj.DisposeJsonObject()

    json.DisposeJsonObject()