CODEWITHSUNDEEP
javajsonjsonpathjayway
zyang
zyang

Reputation: 105

How to flatten a json with nested lists by Jayway JsonPath?

Currently I need to process some json results based on configuration but not hard code.

For example, with the json as follows

{
    data: [{
        orderNo: "CG8310150",
        details: [{
            skuId: 4384,
            amount: 2
        }, {
            skuId: 4632,
            amount: 5
        }]
    }, {
        orderNo: "CG8310151",
        details: [{
            skuId: 4384,
            amount: 3
        }]
    }]
}

I want the result as follows

[{
    orderNo: "CG8310150",
    skuId: 4384,
    amount: 2
}, {
    orderNo: "CG8310150",
    skuId: 4632,
    amount: 5
}, {
    orderNo: "CG8310151",
    skuId: 4384,
    amount: 3
}]

If anyone has the solution with Jayway JsonPath, or has any suggestion of other tools, please let me known.

Thanks for your help!

Upvotes: 4

Views: 5389

Answers (1)

glytching
glytching

Reputation: 47915

You can project results from that JSON using JsonPath. For example:

  • $['data'][*]['orderNo'] returns:

    ["CG8310150","CG8310151"]

  • $['data'][*]['details'][*]['skuId', 'amount'] returns:

    [{"skuId":4384,"amount":2},{"skuId":4632,"amount":5},{"skuId":4384,"amount":3}]

But you cannot combine both of those expressions in one pass through JsonPath so you cannot use JsonPath to return your target output.

Upvotes: 6

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