mongoDB connection exception in spring boot - mongodb

Question

I am tying to connect to mongo DB using spring boot but getting below exception and configuration.
application.properties
spring:
data:
mongodb:
host: localhost
port: 27017
database: VanGuardAuth_DB_AWS_0001
username: myUserAdmin
password: sce#3456#345
2018-03-23 08:58:59.163 INFO 18047 --- [ost-startStop-1] org.mongodb.driver.cluster : Cluster created with settings {hosts=[localhost:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
2018-03-23 08:58:59.257 INFO 18047 --- [ost-startStop-1] org.mongodb.driver.cluster : Cluster created with settings {hosts=[127.0.0.1:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
2018-03-23 08:58:59.297 INFO 18047 --- [localhost:27017] org.mongodb.driver.connection : Opened connection [connectionId{localValue:1, serverValue:13575}] to localhost:27017
2018-03-23 08:58:59.300 INFO 18047 --- [localhost:27017] org.mongodb.driver.cluster : Monitor thread successfully connected to server with description ServerDescription{address=localhost:27017, type=STANDALONE, state=CONNECTED, ok=true, version=ServerVersion{versionList=[3, 2, 19]}, minWireVersion=0, maxWireVersion=4, maxDocumentSize=16777216, roundTripTimeNanos=2413103}
2018-03-23 08:58:59.335 INFO 18047 --- [127.0.0.1:27017] org.mongodb.driver.cluster : Exception in monitor thread while connecting to server 127.0.0.1:27017
com.mongodb.MongoSecurityException: Exception authenticating MongoCredential{mechanism=null, userName='myUserAdmin', source='VanGuardAuth_DB_AWS_0001', password=<hidden>, mechanismProperties={}}
at com.mongodb.connection.SaslAuthenticator.wrapInMongoSecurityException(SaslAuthenticator.java:157) ~[mongodb-driver-core-3.4.3.jar:na]
at com.mongodb.connection.SaslAuthenticator.access$200(SaslAuthenticator.java:37) ~[mongodb-driver-core-3.4.3.jar:na]
at com.mongodb.connection.SaslAuthenticator$1.run(SaslAuthenticator.java:66) ~[mongodb-driver-core-3.4.3.jar:na]
at com.mongodb.connection.SaslAuthenticator$1.run(SaslAuthenticator.java:44) ~[mongodb-driver-core-3.4.3.jar:na]
at com.mongodb.connection.SaslAuthenticator.doAsSubject(SaslAuthenticator.java:162) ~[mongodb-driver-core-3.4.3.jar:na]
at com.mongodb.connection.SaslAuthenticator.authenticate(SaslAuthenticator.java:44) ~[mongodb-driver-core-3.4.3.jar:na]
at com.mongodb.connection.DefaultAuthenticator.authenticate(DefaultAuthenticator.java:32) ~[mongodb-driver-core-3.4.3.jar:na]
at com.mongodb.connection.InternalStreamConnectionInitializer.authenticateAll(InternalStreamConnectionInitializer.java:109) ~[mongodb-driver-core-3.4.3.jar:na]
at com.mongodb.connection.InternalStreamConnectionInitializer.initialize(InternalStreamConnectionInitializer.java:46) ~[mongodb-driver-core-3.4.3.jar:na]
at com.mongodb.connection.InternalStreamConnection.open(InternalStreamConnection.java:116) ~[mongodb-driver-core-3.4.3.jar:na]
at com.mongodb.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:113) ~[mongodb-driver-core-3.4.3.jar:na]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_161]
Caused by: com.mongodb.MongoCommandException: Command failed with error 18: 'Authentication failed.' on server 127.0.0.1:27017. The full response is { "ok" : 0.0, "code" : 18, "errmsg" : "Authentication failed." }
at com.mongodb.connection.CommandHelper.createCommandFailureException(CommandHelper.java:170) ~[mongodb-driver-core-3.4.3.jar:na]
at com.mongodb.connection.CommandHelper.receiveCommandResult(CommandHelper.java:123) ~[mongodb-driver-core-3.4.3.jar:na]
at com.mongodb.connection.CommandHelper.executeCommand(CommandHelper.java:32) ~[mongodb-driver-core-3.4.3.jar:na]
at com.mongodb.connection.SaslAuthenticator.sendSaslStart(SaslAuthenticator.java:117) ~[mongodb-driver-core-3.4.3.jar:na]
at com.mongodb.connection.SaslAuthenticator.access$000(SaslAuthenticator.java:37) ~[mongodb-driver-core-3.4.3.jar:na]
at com.mongodb.connection.SaslAuthenticator$1.run(SaslAuthenticator.java:50) ~[mongodb-driver-core-3.4.3.jar:na]
... 9 common frames omitted
tried with below configuration also but same exception
#Bean
public MongoDbFactory mongoDbFactory() throws Exception {
final MongoCredential credential =MongoCredential.createCredential("myUserAdmin", "VanGuardAuth_DB_AWS_0001", "Admin#321$".toCharArray());
ServerAddress serverAddress = new ServerAddress("127.0.0.1", 27017);
MongoClient mongoClient = new MongoClient(serverAddress, new ArrayList<MongoCredential>() {{ add(credential); }});
return new SimpleMongoDbFactory(mongoClient,"VanGuardAuth_DB_AWS_0001");
}
#Bean
public MongoTemplate mongoTemplate() throws Exception {
MongoTemplate mongoTemplate = new MongoTemplate(mongoDbFactory());
return mongoTemplate;
}