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法律研究显示带文档和子文档示例的 MongoDB 并更新
下面是显示文档和子文档的语法 -
db.yourCollectionName.insertOne(
{
yourFiledName:yourValue,
yourFieldName : [
{
yourFiledName1,
yourFiledName2,
.
.
.
N
}
]
}
);让我们看一个带文档的示例创建集合 -
> db.demo706.insertOne(
... {
... PortalName: "GameApplication",
... ApplicationConfiguration : [
... {
... "URL": "jdbc:mysql://127.0.0.1/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")
}在 find() 方法的帮助下显示某个集合中的所有文档 -
> db.demo706.find();
将会生成以下输出 -
{ "_id" : ObjectId("5ea6f557551299a9f98c93c6"), "PortalName" : "GameApplication", "ApplicationConfiguration" : [ { "URL" : "jdbc:mysql://127.0.0.1/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" } ] }下面是对 -
> db.demo706.update({PortalName: "WebMyBusinessApplication"},{$set:{"PortalName":"OnlineCustomerTracker"}});
WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })在 find() 方法的帮助下显示某个集合中的所有文档 -
> db.demo706.find();
将会生成以下输出 -
{ "_id" : ObjectId("5ea6f557551299a9f98c93c6"), "PortalName" : "GameApplication", "ApplicationConfiguration" : [ { "URL" : "jdbc:mysql://127.0.0.1/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" } ] }
更新于: 14-May-2020
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