Exception-in-monitor-thread-while-connecting-to-server-localhost

项目没有使用 MongoDB 却每次启动时会出现如下异常信息：

10:41:41.288 [main] INFO  o.m.d.cluster - Cluster created with settings {hosts=[localhost:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
10:41:41.361 [cluster-ClusterId{value='5dae6c654d4299250bde1b44', description='null'}-localhost:27017] INFO  o.m.d.cluster - Exception in monitor thread while connecting to server localhost:27017
com.mongodb.MongoSocketOpenException: Exception opening socket
    at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:67)
    at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:126)
    at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:117)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.ConnectException: 拒绝连接 (Connection refused)
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:589)
    at com.mongodb.internal.connection.SocketStreamHelper.initialize(SocketStreamHelper.java:64)
    at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:62)
    ... 3 common frames omitted

解决方法

// 在 Application 主类上添加注解
// 方式一：@EnableAutoConfiguration(exclude={MongoAutoConfiguration.class, MongoDataAutoConfiguration.class})


// 方式二：@SpringBootApplication(exclude = {MongoAutoConfiguration.class, MongoDataAutoConfiguration.class})

相关文档：

https://docs.spring.io/spring…