使用node.js將嵌套的json轉換為csv

Question

我想使用node.js將嵌套的json轉換為csv文件。 我的JSON結構：

[
{
    "Make": "Nissan",
    "Model": "Murano",
    "Year": "2013",
    "Specifications": {
        "Mileage": "7106",
        "Trim": "SAWD"
    },
    "Items": [
        {
            "flavor": {
                "name": "Cherry",
                "id": 1
            },
            "packSize": {
                "name": "200ML",
                "id": 1
            }
        },
        {
            "flavor": {
                "name": "Vanilla",
                "id": 2
            },
            "packSize": {
                "name": "300ML",
                "id": 2
            }
        }
    ]
},
{
    "Make": "BMW",
    "Model": "X5",
    "Year": "2014",
    "Specifications": {
        "Mileage": "3287",
        "Trim": "M"
    },
    "Items": [
        {
            "flavor": {
                "name": "Cherry",
                "id": 1
            },
            "packSize": {
                "name": "200ML",
                "id": 1
            }
        },
        {
            "flavor": {
                "name": "Vanilla",
                "id": 2
            },
            "packSize": {
                "name": "300ML",
                "id": 2
            }
        }
    ]
}
]

我使用'json-2-csv'模塊，但它只轉換簡單結構而不是嵌套結構。 只有'make'，'model'，'year'和'specification'被轉換，'items'沒有轉換怎么做？

Answer 1

您可以使用jsonexport模塊非常簡單，請查看此示例：

這是使用您提供的json和jsonexport的輸出：

樣品：

var jsonexport = require('jsonexport');

var contacts = [{
   name: 'Bob',
   lastname: 'Smith',
   family: {
       name: 'Peter',
       type: 'Father'
   }
},{
   name: 'James',
   lastname: 'David',
   family:{
       name: 'Julie',
       type: 'Mother'
   }
},{
   name: 'Robert',
   lastname: 'Miller',
   family: null,
   location: [1231,3214,4214]
},{
   name: 'David',
   lastname: 'Martin',
   nickname: 'dmartin'
}];

jsonexport(contacts,function(err, csv){
    if(err) return console.log(err);
    console.log(csv);
});

輸出：

lastname;name;family.type;family.name;nickname;location
Smith;Bob;Father;Peter;;
David;James;Mother;Julie;;
Miller;Robert;;;;1231,3214,4214
Martin;David;;;dmartin;

資料來源： https ： //www.npmjs.com/package/jsonexport

Answer 2

你總是有相同數量的列嗎？ 即：你有固定（或最大數量）的物品嗎？

Make;Model;Year;Mileage;Trim;Item_1_flavor_name;Item_1_packSize_name;Item_2_flavor_name;Item_2_packSize_name