ノードでJSON配列を解析する際の問題JS

Question

JSとExpressの新機能ノードに小規模な概念証明APIを構築する必要があります。

現在、「sender_id」で適切なメッセージを選択するために必要なデータを取得するためにJSON配列を解析する方法に関する知識が不足しているため、問題が発生しています。

私はそれを非配列データで動作させることはできましたが、配列内のデータを扱うことはできません。

現在、非配列で動作するコードは次のとおりです。どのようにこの問題を解決する上での指針をいただければ幸いです。

JSON

{ 
    "data_type": "edijson", 
    "payload": { 
     "invoices": [{"invoice_6582": 
    { 
    "sender_id": 5060043358032, 
    "buyer_id" : 5055185400478, 
    "message_ref": 135353677, 
    "document_type": "Commercial", 
    "document_name": "MRCHI", 
    "document_no": 6582, 
    "state": "partial", 
    "total_amount": 1008.00, 
    "paid_at": "null", 
    "invoice_date": "2012-01-30T00:00:00", 
    "tax_date": "2012-01-30T00:00:00", 
    "amount_due": 1008.00, 
    "invoice_no": "6582", 
    "order_no": 9899073, 
    "supplier_no": "5060043358032", 
    "delivery_party" : 5010251999898, 
    "vat_reg": 793728185, 
    "charges": [ 
     { 
      "created_at": "20120130", 
      "item_id": 5010251685524, 
      "item_qty": 140, 
      "unit_price": 7.20, 
      "vat_type": "VAT", 
      "vat_rate": 20.00, 
      "currency_id" : "GBP", 
      "total_amont": 1008.00, 
      "type": "Charge" 
     }], 
    "totals": [ 
     { 
      "invoice_amount": 1008.00, 
      "total_amount": 1008.00, 
      "tax_amount": 201.60, 
      "taxable_amount": 1008.00, 
      "allowances": 0.00 
     } 

     ] 
     } 
    } 
, 
{"invoice_6788": 
    { 
    "sender_id": 5060043358032, 
    "buyer_id" : 5055185400478, 
    "message_ref": 10636000100020, 
    "document_type": "Commercial", 
    "document_name": "MRCHI", 
    "document_no": 6582, 
    "state": "partial", 
    "total_amount": 1008.00, 
    "paid_at": "null", 
    "invoice_date": "2012-01-30T00:00:00", 
    "tax_date": "2012-01-30T00:00:00", 
    "amount_due": 1008.00, 
    "invoice_no": "6788", 
    "order_no": 9899073, 
    "supplier_no": "5060043358032", 
    "delivery_party" : 5010251999898, 
    "vat_reg": 793728185, 
    "charges": [ 
     { 
      "created_at": "20120130", 
      "item_id": 5010251685524, 
      "item_qty": 140, 
      "unit_price": 7.20, 
      "vat_type": "VAT", 
      "vat_rate": 20.00, 
      "currency_id" : "GBP", 
      "total_amont": 1008.00, 
      "type": "Charge" 
     }], 
    "totals": [ 
     { 
      "invoice_amount": 1008.00, 
      "total_amount": 1008.00, 
      "tax_amount": 201.60, 
      "taxable_amount": 1008.00, 
      "allowances": 0.00 
     } 

     ] 
     } 
    } 
, 
{"invoice_7786": 
    { 
    "sender_id": 5060043358032, 
    "buyer_id" : 5055185400478, 
    "message_ref": 10636000100020, 
    "document_type": "Commercial", 
    "document_name": "MRCHI", 
    "document_no": 6582, 
    "state": "partial", 
    "total_amount": 1008.00, 
    "paid_at": "null", 
    "invoice_date": "2012-01-30T00:00:00", 
    "tax_date": "2012-01-30T00:00:00", 
    "amount_due": 1008.00, 
    "invoice_no": "7786", 
    "order_no": 9899073, 
    "supplier_no": "5060043358032", 
    "delivery_party" : 5010251999898, 
    "vat_reg": 793728185, 
    "charges": [ 
     { 
      "created_at": "20120130", 
      "item_id": 5010251685524, 
      "item_qty": 140, 
      "unit_price": 7.20, 
      "vat_type": "VAT", 
      "vat_rate": 20.00, 
      "currency_id" : "GBP", 
      "total_amont": 1008.00, 
      "type": "Charge" 
     }], 
    "totals": [ 
     { 
      "invoice_amount": 1008.00, 
      "total_amount": 1008.00, 
      "tax_amount": 201.60, 
      "taxable_amount": 1008.00, 
      "allowances": 0.00 
     } 

     ] 
     } 
    } 
, 
{"invoice_4567": 
    { 
    "sender_id": 5060043358032, 
    "buyer_id" : 5055185400478, 
    "message_ref": 10636000100020, 
    "document_type": "Commercial", 
    "document_name": "MRCHI", 
    "document_no": 6582, 
    "state": "partial", 
    "total_amount": 1008.00, 
    "paid_at": "null", 
    "invoice_date": "2012-01-30T00:00:00", 
    "tax_date": "2012-01-30T00:00:00", 
    "amount_due": 1008.00, 
    "invoice_no": "4567", 
    "order_no": 9899073, 
    "supplier_no": "5060043358032", 
    "delivery_party" : 5010251999898, 
    "vat_reg": 793728185, 
    "charges": [ 
     { 
      "created_at": "20120130", 
      "item_id": 5010251685524, 
      "item_qty": 140, 
      "unit_price": 7.20, 
      "vat_type": "VAT", 
      "vat_rate": 20.00, 
      "currency_id" : "GBP", 
      "total_amont": 1008.00, 
      "type": "Charge" 
     }], 
    "totals": [ 
     { 
      "invoice_amount": 1008.00, 
      "total_amount": 1008.00, 
      "tax_amount": 201.60, 
      "taxable_amount": 1008.00, 
      "allowances": 0.00 
     } 

     ] 
     } 
    } 
] 
} 
} 

ノードこの以来

var express = require('express'); 
    var app = express(); 
    var fs = require("fs"); 

    app.get('/v1/invoice/:sender_id', function (req, res) { 
    // First read existing invoices. 
    fs.readFile(__dirname + "/" + "Invoice.json", 'utf8', function (err, data) { 
     data = JSON.parse(data); 
     var invoice = data["invoice_" + req.params.sender_id] 
     console.log(invoice); 
     res.end(JSON.stringify(invoice)); 
     }); 
    }) 

    var server = app.listen(8081, function() { 
    var host = server.address().address 
    var port = server.address().port 
    }) 

Answer 1

は、あなたがそれをループすることができ、配列です。

data.payload.invoices.forEach(function(invoice){ 
    if (invoice.invoice_no === req.params.id) { 
     // do stuff 
    } 
});