Question

您好我正在使用java和mongoDB进行一些实验。我已成功安装mongoDB并能够通过命令行连接。但是当我尝试通过java连接时，它会给我带来身份验证错误。我尝试了以下方式：

public void saveExam() {
    date = (DatePicker)findViewById(R.id.examDate);
    Integer day = date.getDayOfMonth();
    Integer month = date.getMonth();
    Integer year = date.getYear();
    StringBuilder temp = new StringBuilder();
    temp.append(day.toString()).append("/").append(month.toString()).append("/").append(year.toString());
    String dateStr = temp.toString();

    time = (TimePicker)findViewById(R.id.examTime);
    Integer hour, minutes;
    if (Build.VERSION.SDK_INT >= 23 ) {
        hour = time.getHour();
        minutes = time.getMinute();
    } else {
        hour = time.getCurrentHour();
        minutes = time.getCurrentMinute();
    }
    temp = new StringBuilder();
    temp.append(hour.toString()).append(":").append(minutes.toString());
    String timeStr = temp.toString();

    Toast.makeText(add_exam.this, dateStr  + ", " + timeStr, Toast.LENGTH_LONG).show();
}

并通过java代码：

    nilkash@nilkash-Inspiron-5559:~$ mongo -u admin -p admin123 --authenticationDatabase admin
MongoDB shell version: 3.2.9
connecting to: test
Server has startup warnings: 
2016-09-17T16:29:31.090+0530 I CONTROL  [initandlisten] 
2016-09-17T16:29:31.090+0530 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2016-09-17T16:29:31.090+0530 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2016-09-17T16:29:31.090+0530 I CONTROL  [initandlisten] 
2016-09-17T16:29:31.090+0530 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2016-09-17T16:29:31.090+0530 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2016-09-17T16:29:31.090+0530 I CONTROL  [initandlisten] 
>

并得到了结果：

package mongo;

import java.net.UnknownHostException;
import java.util.Date;
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.Mongo;
import com.mongodb.MongoClient;
import com.mongodb.MongoException;

/**
 * Java + MongoDB Hello world Example
 *
 */
public class App {
  public static void main(String[] args) {

    try {

        Mongo mongo = new Mongo("localhost", 27017);
        DB db = mongo.getDB("testdb");

        boolean auth = db.authenticate("admin", "admin123".toCharArray());

    if (auth) {

        System.out.println("Login is successful!");
    } else {
        System.out.println("Login is failed!");
    }
    System.out.println("Done");


    } catch (UnknownHostException e) {
    e.printStackTrace();
    } catch (MongoException e) {
    e.printStackTrace();
    }

  }
}

有什么不对吗？需要一些帮助。谢谢。

Answer 1

在最新版本的MongoDB 3.2中，默认的身份验证机制是＆＃34; SCRAM-SHA-1＆＃34;。有一个单独的类可用于此身份验证。我建议使用这种最新的方法。

有关详细信息，请参阅此link。

以下示例： -

以下代码中的数据库名称，用户名和密码。它应该适合你。

    public static void main(String[] args) {

MongoClient mongoClient = null;
        MongoCredential mongoCredential = MongoCredential.createScramSha1Credential("admin", "admin",
                "admin123".toCharArray());

        mongoClient = new MongoClient(new ServerAddress("localhost", 27017), Arrays.asList(mongoCredential));

        DB db = mongoClient.getDB("testdb");

        System.out.println(db.getStats());
        System.out.println(db.getCollectionNames());

        mongoClient.close();
    }

相关性： -

<dependency>
    <groupId>org.mongodb</groupId>
    <artifactId>mongo-java-driver</artifactId>
    <version>3.2.2</version>
</dependency>

用户创建： -

use admin;

db.createUser({ user : "admin", pwd : "admin123", roles : ["dbAdmin"]});

要查看用户详细信息： -

use admin;

db.getUsers();

Answer 2

mongo -u admin -p admin123 --authenticationDatabase admin

当您尝试使用mongo shell登录时，您正在对db admin进行身份验证。但是，在代码中，您似乎正在尝试使用db testdb评估您的登录凭据

DB db = mongo.getDB("testdb");

两地应该相同。

Answer 3

根据您的评论，mongo -u admin -p admin123 --authenticationDatabase admin似乎运行良好。将DB db = mongoClient.getDB("testdb");更改为DB db = mongoClient.getDB("admin");

Answer 4

此代码有效

MongoCredential mongoCredential = MongoCredential.createScramSha1Credential(this.username, this.dbname,
                this.password.toCharArray());
        MongoClient mongoClient = new MongoClient(new ServerAddress(dbhost, this.dbport), Arrays.asList(mongoCredential));

Java mongo db身份验证失败

4 个答案: