如何将MongoDB结果存储在数组中？
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
}
]