1. 原因是copy配置文件时丢掉了一部分文件夹，导致gv中没有数据库名，报错为数据库名为空：
While executing [invoke] encountered [com.mongodb.MongoTimeoutException] : [Timed out after 30000 ms while waiting for a server that matches WritableServerSelector. Client view of cluster state is {type=UNKNOWN, servers=[{address=172.17.0.6:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSecurityException: Exception authenticating MongoCredential{mechanism=null, userName='', source='', password=, mechanismProperties={}}}, caused by {java.lang.IllegalArgumentException: state should be: databaseName is not empty}}] at com.mongodb.connection.BaseCluster.createTimeoutException(BaseCluster.java:377)]BW-JAVA-100001invokecom.mongodb.MongoTimeoutExceptionTimed out after 30000 ms while waiting for a server that matches WritableServerSelector. Client view of cluster state is {type=UNKNOWN, servers=[{address=172.17.0.6:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSecurityException: Exception authenticating MongoCredential{mechanism=null, userName='', source='', password=, mechanismProperties={}}}, caused by {java.lang.IllegalArgumentException: state should be: databaseName is not empty}}] at com.mongodb.connection.BaseCluster.createTimeoutException(BaseCluster.java:377)
