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如何将MongoDB结果存储在数组中？

2024-05-15 05:29:03 342

要将MongoDB结果存储在数组中，请使用toArray()方法-

var anyVariableName=db.yourCollectionName.find().toArray();

首先让我们创建一个包含文档的集合-

> db.mongoDbResultInArrayDemo.insertOne({"CustomerName":"David Miller","CustomerAge":24,"isMarried":false});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5cd99bd5b50a6c6dd317ad92")
}
> db.mongoDbResultInArrayDemo.insertOne({"CustomerName":"Sam Williams","CustomerAge":46,"isMarried":true});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5cd99beab50a6c6dd317ad93")
}
> db.mongoDbResultInArrayDemo.insertOne({"CustomerName":"Carol Taylor","CustomerAge":23,"isMarried":false});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5cd99bf9b50a6c6dd317ad94")
}

以下是在find()方法的帮助下显示集合中所有文档的查询-

> db.mongoDbResultInArrayDemo.find().pretty();

这将产生以下输出-

{
   "_id" : ObjectId("5cd99bd5b50a6c6dd317ad92"),
   "CustomerName" : "David Miller",
   "CustomerAge" : 24,
   "isMarried" : false
}
{
   "_id" : ObjectId("5cd99beab50a6c6dd317ad93"),
   "CustomerName" : "Sam Williams",
   "CustomerAge" : 46,
   "isMarried" : true
}
{
   "_id" : ObjectId("5cd99bf9b50a6c6dd317ad94"),
   "CustomerName" : "Carol Taylor",
   "CustomerAge" : 23,
   "isMarried" : false
}

以下是将MongoDB结果存储在数组中的查询-

> var mongoDbResultIntoArray=db.mongoDbResultInArrayDemo.find().toArray();

让我们显示上述变量的记录-

> mongoDbResultIntoArray

这将产生以下输出-

[
   {
      "_id" : ObjectId("5cd99bd5b50a6c6dd317ad92"),
      "CustomerName" : "David Miller",
      "CustomerAge" : 24,
      "isMarried" : false
   },
   {
      "_id" : ObjectId("5cd99beab50a6c6dd317ad93"),
      "CustomerName" : "Sam Williams",
      "CustomerAge" : 46,
      "isMarried" : true
   },
   {
      "_id" : ObjectId("5cd99bf9b50a6c6dd317ad94"),
      "CustomerName" : "Carol Taylor",
      "CustomerAge" : 23,
      "isMarried" : false
   }
]

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如何将MongoDB结果存储在数组中？

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