如何使用MongoDB Web Shell将文档正确插入到集合中

从MongoDB站点将文档集合插入MongoDB Web Shell时遇到一些问题

该链接提供：

下面是一个简单的例子：

db.FirstExample.insertMany ([ 

    { "Date": "2001-01-01", "Description": "Airfare", "Amount": "500.34" },
    { "Date": "2001-01-01", "Description": "Hotel", "Amount": "200" },
    { "Date": "2001-01-01", "Description": "Taxi Fare", "Amount": "100.00" },
    { "Date": "2001-01-01", "Description": "Long Distance Phone Charges", "Amount": "57.89" },
    { "Date": "2001-01-01", "Description": "Food",  "Amount": "82.19" },
    { "Date": "2001-01-02", "Description": "Food",  "Amount": "17.89" },
    { "Date": "2001-01-02", "Description": "Personal Items", "Amount": "32.54" },
    { "Date": "2001-01-03", "Description": "Taxi Fare", "Amount": "75.00" },
    { "Date": "2001-01-03", "Description": "Food",  "Amount": "36.45" },
    { "Date": "2001-01-03", "Description": "New Suit", "Amount": "750.00" } 
]);

当我将这个集合运行到MongoDB Web Shell中时，它工作得非常好。现在麻烦来了，我想再加入一个元素，叫做“ExpenseItem”。当我输入新的代码段时，我得到一个错误

db.FirstExample.insertMany ([ 

    { "ExpenseItem:"

    { "Date": "2001-01-01", "Description": "Airfare", "Amount": "500.34" },
    { "Date": "2001-01-01", "Description": "Hotel", "Amount": "200" },
    { "Date": "2001-01-01", "Description": "Taxi Fare", "Amount": "100.00" },
    { "Date": "2001-01-01", "Description": "Long Distance Phone Charges", "Amount": "57.89" },
    { "Date": "2001-01-01", "Description": "Food",  "Amount": "82.19" },
    { "Date": "2001-01-02", "Description": "Food",  "Amount": "17.89" },
    { "Date": "2001-01-02", "Description": "Personal Items", "Amount": "32.54" },
    { "Date": "2001-01-03", "Description": "Taxi Fare", "Amount": "75.00" },
    { "Date": "2001-01-03", "Description": "Food",  "Amount": "36.45" },
    { "Date": "2001-01-03", "Description": "New Suit", "Amount": "750.00" } 

    } 
]);

错误是： E QUERY[js]未捕获异常：语法错误：缺少：在属性id之后：

---

为什么我会出错？“：”不是已经在“ExpsenseItem”旁边了吗？对于未在MongoDb Web Shell中运行的代码段，我缺少哪些关键细节？

将它们与文档其余部分分开的冒号

ExpenseItem

位于引号内，因此被视为关键的一部分。要按原样嵌套文档，需要将它们放入数组中。因此：

{ "ExpenseItem" : [

    { "Date": "2001-01-01", "Description": "Airfare", "Amount": "500.34" },
    { "Date": "2001-01-01", "Description": "Hotel", "Amount": "200" },
    { "Date": "2001-01-01", "Description": "Taxi Fare", "Amount": "100.00" },
    { "Date": "2001-01-01", "Description": "Long Distance Phone Charges", "Amount": "57.89" },
    { "Date": "2001-01-01", "Description": "Food",  "Amount": "82.19" },
    { "Date": "2001-01-02", "Description": "Food",  "Amount": "17.89" },
    { "Date": "2001-01-02", "Description": "Personal Items", "Amount": "32.54" },
    { "Date": "2001-01-03", "Description": "Taxi Fare", "Amount": "75.00" },
    { "Date": "2001-01-03", "Description": "Food",  "Amount": "36.45" },
    { "Date": "2001-01-03", "Description": "New Suit", "Amount": "750.00" }
]
}

---

此文档将插入，但它现在是单个文档

无效的JSON。是否要将

ExpenseItem

添加到插入的每个文档中，还是希望单个

ExpenseItem

成为包含所有日期/说明/金额子文档的数组？单个ExpenseItem是包含所有日期/说明/金额子文档的数组。