如何使用用户名和密码连接到Java中的MongoDB 3.2？

问题描述：

我在我的应用程序中使用 MongoDB 3.2。下面的代码演示了数据库初始化逻辑：

I'm using MongoDB 3.2 in my application. The code below demonstrates database initialization logic:

private void dbInit(String dbName) {

    String mongoClientURI = "mongodb://" + DB_URL + ":" + DB_PORT;
    MongoClientURI connectionString = new MongoClientURI(mongoClientURI);

    // enable SSL connection
    MongoClientOptions.builder().sslEnabled(true).build();

    if (this.mongoClient == null) {
        this.mongoClient = new MongoClient(connectionString);
    }

    // create database if doesn't exist
    this.mongoClient.getDatabase(dbName);
}

此代码工作正常，现在我想将访问级别分离引入数据库。

This code works fine, now I want to introduce access level separation to database.

执行此操作的步骤：

定义用户：

Define users:

use myAppDB
db.createUser(
   {
      "user": "myAdmin",
      "pwd": "123090d1487dd4ab7",
      roles: [ "readWrite", "dbAdmin" ]
   }
)

use myAppDB
db.createUser(
   {
      "user": "guest",
      "pwd": "guest",
      roles: [ "read" ]
   }
)

重新创建 MongoDB 3.2验证模式下的服务：
C：\Program Files \ MongoDB\Server\3.2\bin\mongod.exe--install - -dbpath = C：\data\db --logpath = C：\ data \log \log.txt --auth --service 。并运行它。

Re-create the MongoDB 3.2 service in authentification mode: "C:\Program Files\MongoDB\Server\3.2\bin\mongod.exe" --install --dbpath=C:\data\db --logpath=C:\data\log\log.txt --auth --service. And run it.

将 mongoClientURI 连接字符串更改为

String mongoClientURI = "mongodb://" + DB_SRV_USR + ":" + DB_SRV_PWD + "@" + DB_URL + ":" + DB_PORT;

其中 DB_SRV_USR = myAdmin 和 DB_SRV_PWD = 123090d1487dd4ab7 。

使用相同的凭据检查IDEA的 Mongo Explorer 中经过身份验证的连接，一切正常。

Check the authenticated connection in IDEA's Mongo Explorer with the same credentials, everything is OK.

执行我的应用程序并获取异常验证失败。

Execute my application and get exception Authentification failed.

我的问题：

如何连接 MongoDB 3.2 in用户名和密码的Java？我看到了几个示例，但他们使用了弃用的方法。

我应该将我的用户添加到 myAppDB 或 admin 表？在一些教程中，我看到用户是在 admin 表中创建的，这是一个好主意还是值得在他们将要使用的数据库中创建用户？

How to connect to MongoDB 3.2 in Java with username and password? I saw a couple of examples but they are using deprecated methods.
Should I add my users to myAppDB or to admin table? In some tutorials I saw that users are created in admin table is it a good idea or it worth to create users only in a database they are going to work with?

答

as MarkusWMahlberg 正确注意到，有必要记下连接字符串中的数据库名称。

As MarkusWMahlberg correctly noted, it is necessary to note the database name in the connection string.

例如：

String mongoClientURI = "mongodb://" + DB_SRV_USR + ":" + DB_SRV_PWD + "@" + DB_URL + ":" + DB_PORT + "/" + dbName;

如何使用用户名和密码连接到Java中的MongoDB 3.2？

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