使用 Node.js 将嵌套的 json 数组解析为单独的 json 对象

Question

Need assistance parsing nested arrays into separate objects using Node.js. Assistance very much appreciated.

---

I need to not have these in final output-

"Status": "0",
"Message": "OK",
"Count": "3724",

AND

I need to have the following as separate json objects-

• InvoiceRecords (occurs one time in json)
• InvoiceRecordHeaderDetails (occurs multiple times in json)
• InvoiceRecordSplitDetails (occurs multiple times in json)
• InvoiceRecordLineItemDetails (occurs multiple times in json)
• InvoiceTaxCodeDetails (occurs multiple times in json)

---

Have the following json data sample (truncated):

{
"Status": "0",
"Message": "OK",
"Count": "3724",
"InvoiceRecords": [
    {
        "InvoiceDate": "8/9/2017 12:00:00 AM",
        "InvoiceLocation": "002",
        "InvoiceNumber": "2004085",
        "InvoiceRecordHeaderDetails": [
            {
                "InvNum": "2004085",
                "Location": "002",
                "InvDate": "8/9/2017 12:00:00 AM"
            }
        ],
        "InvoiceRecordSplitDetails": [
            {
                "UniqueID": "1757391",
                "InvNum": "2004085",
                "Location": "002",
                "InvoiceDate": "8/9/2017 12:00:00 AM"
            }
        ],
        "InvoiceRecordLineItemDetails": [
            {
                "UniqueID": "3939934",
                "InvNum": "2004085",
                "Location": "002",
                "InvoiceDate": "8/9/2017 12:00:00 AM"
            }
        ],
        "InvoiceTaxCodeDetails": [
            {
                "InvoiceDate": "8/9/2017 12:00:00 AM",
                "Location": "002",
                "InvNum": "2004085",
            }
        ]
    }
]

}

---

Update 2

@chris-adorna

Following your instructions (I think), but hit a snag (help?)

// Parse input file data as json
var jsonContent = JSON.parse(fs.readFileSync(inputFile, 'utf8'));

//1. Create 4 empty arrays, one each for record header, splits, line items and tax code details
var recordHeader;
var splits;
var lineItems;
var taxCodes;

//2. Use a forEach function to iterate through InvoiceRecords

var i;
for (i = 0; i < jsonContent.length; i++) {
    var record = jsonContent[i].InvoiceRecords;
};
console.log(record);

Step 2 not getting anything but 'undefined' in console.

Answer 1

Taking your question literally, especially this part: "output each array to individual json files", try something along the lines of:

1. Create 4 empty arrays, one each for record header, splits, line items and tax code details
2. Use a forEach function to iterate through InvoiceRecords
3. For each iteratee object, use a for...of statement to iterate through the Object.entries
4. Using a conditional expression, if the key === your target (ie 'InvoiceTaxCodeDetails' ), push the value into the appropriate array
5. Once the forEach function has completed, then use the native fs module to write the contents of each array to a JSON file