我想使用Spark Scala展平嵌套的Json文件

我的文件看起来像这样

{
    "Item Version": 1.0,
    "Item Creation Time": "2019-04-14 14:15:09",
    "Trade Dictionary": {
        "Country": "India",
        "TradeNumber": "1",
        "action": {
            "Action1": false
        },
        "Value": "XXXXXXXXXXXXXXX"
    },
    "Payments": {
        "Payment Details": [{
            "Payment Date": "2019-04-11",
            "Payment Type": "Rej"
        }]
    }
}

我想要以下格式的结果

Item Version,Item Creation Time,Trade Dictionary.Country,Trade Dictionary.TradeNumber,Trade Dictionary.TradeNumber.action.Action1,Trade Dictionary.TradeNumber.value,Payment.Payment Details.Payment Date,Payment.Payment Details.Payment Type

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请提供一个最小的可重复的例子：你可以看一看-这个问题重复