如果Spring Boot 2中不存在mongodb服务器，Maven构建会失败吗？

Question

I am learning java and Spring boot 2

So my problem is:

2018-07-09 11:40:24.816  INFO 20196 --- [localhost:27017] org.mongodb.driver.cluster: Exception in monitor thread while connecting to server localhost:27017

com.mongodb.MongoSocketOpenException: Exception opening socket at com.mongodb.connection.SocketStream.open(SocketStream.java:62) ~[mongo-java-driver-3.6.4.jar:na]
at com.mongodb.connection.InternalStreamConnection.open (InternalStreamConnection.java:126) ~[mongo-java-driver-3.6.4.jar:na]
at com.mongodb.connection.DefaultServerMonitor$ServerMonitorRunnable.run (DefaultServerMonitor.java:114) ~[mongo-java-driver-3.6.4.jar:na]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_171] Caused by: java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_171]
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_171]
at java.net.AbstractPlainSocketImpl.connectToAddress (AbstractPlainSocketImpl.java:206) ~[na:1.8.0_171]
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_171]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_171]
at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_171]
at com.mongodb.connection.SocketStreamHelper.initialize (SocketStreamHelper.java:59) ~[mongo-java-driver-3.6.4.jar:na]
at com.mongodb.connection.SocketStream.open(SocketStream.java:57) ~[mongo-java-driver-3.6.4.jar:na]
... 3 common frames omitted

2018-07-09 11:40:25.164  INFO 20196 --- [           main] org.mongodb.driver.cluster: Cluster description not yet available. Waiting for 30000 ms before timing out

So when Spring Boot 2 is Maven build app it stuck because of absent MongoDB server and trying to connect 3 time with timeout 30000ms, then stuck...

So I want to init this connection, after finishing of Maven build, from runtime with external config parameter, and then with @shedules monitoring check if MongoDB alive, and reconnect if it lost.

What I found for SQL is excluding autoconfiguration from topic but I dont know which file is configure MongoDB from this link . And may be I must configure it like a @PostConstruct @bean conf files? (please suggest me example if it present and possibility to do this opportunity)

Thank you in advance!

for now I take an example of db routers:

@SpringBootApplication(exclude = 
{org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration.class
,org.springframework.boot.autoconfigure.data.mongo 
.MongoDataAutoConfiguration.class})
public class Application { 

exclude 2 files from autoconfigure, wrote some class for setup my properties, but I still do not know how to delay an effort of connection!

Answer 1

since you are using spring boot it should take care of the required versions or did you added the entries for the driver in the pom yourself.

1. try maven clean ,and force update of snapshots.
2. mongo-java-driver-3.6.4.jar either it is not compatible or not picked by the ide you are using. check the table mongo-db-compatibilty

Answer 2

Skip the junit test while building the project.

Use -Dmaven.test.skip=true to skip the tests

or

in eclipse->Project->Run As->run configuration->Maven build-> check Skip Tests