显示 MongoDB 文档和子文档示例并进行更新
mongodbdatabasebig data analytics更新于 2026/1/6 10:52:17
以下是显示文档和子文档的语法 −
db.yourCollectionName.insertOne(
{
yourFiledName:yourValue,
yourFieldName : [
{
yourFiledName1,
yourFiledName2,
.
.
.
N
}
]
}
);
让我们看一个创建包含文档的集合的示例 −
> db.demo706.insertOne(
... {
... PortalName: "GameApplication",
... ApplicationConfiguration : [
... {
... "URL": "jdbc:mysql://localhost/customer_tracker?autoReconnect=true",
... "USERNAME": "root",
... "PASSWORD": "root"
... }
... ]
... }
... );
{
"acknowledged" : true,
"insertedId" : ObjectId("5ea6f557551299a9f98c93c6")
}
>
> db.demo706.insertOne(
... {
... PortalName: "WebMyBusinessApplication",
... ApplicationConfiguration : [
... {
... "URL": "jdbc:oracle:thin:@localhost:1521:xe",
... "USERNAME": "App",
... "PASSWORD": "App"
... }
... ]
... }
... );
{
"acknowledged" : true,
"insertedId" : ObjectId("5ea6f558551299a9f98c93c7")
}
借助 find() 方法显示集合中的所有文档 −
> db.demo706.find();
这将产生以下输出 −
{ "_id" : ObjectId("5ea6f557551299a9f98c93c6"), "PortalName" : "GameApplication", "ApplicationConfiguration" : [ { "URL" : "jdbc:mysql://localhost/customer_tracker?autoReconnect=true", "USERNAME" : "root", "PASSWORD" : "root" } ] }
{ "_id" : ObjectId("5ea6f558551299a9f98c93c7"), "PortalName" : "WebMyBusinessApplication", "ApplicationConfiguration" : [ { "URL" : "jdbc:oracle:thin:@localhost:1521:xe", "USERNAME" : "App", "PASSWORD" : "App" } ] }
以下是要更新的查询 −
> db.demo706.update({PortalName: "WebMyBusinessApplication"},{$set:{"PortalName":"OnlineCustomerTracker"}});
WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })
借助 find() 方法显示集合中的所有文档 −
> db.demo706.find();
这将产生以下输出 −
{ "_id" : ObjectId("5ea6f557551299a9f98c93c6"), "PortalName" : "GameApplication", "ApplicationConfiguration" : [ { "URL" : "jdbc:mysql://localhost/customer_tracker?autoReconnect=true", "USERNAME" : "root", "PASSWORD" : "root" } ] }
{ "_id" : ObjectId("5ea6f558551299a9f98c93c7"), "PortalName" : "OnlineCustomerTracker", "ApplicationConfiguration" : [ { "URL" : "jdbc:oracle:thin:@localhost:1521:xe", "USERNAME" : "App", "PASSWORD" : "App" } ] }
