Run report mongosocketopenexception error resolution after creating Springbootdemo

On the class springbootdemoapplication, right-click Run as to select the spring Boot app and the console output error log is as follows:

Com.mongodb.MongoSocketOpenException:Exception Opening socket
At Com.mongodb.connection.SocketStream.open (socketstream.java:63) ~[mongodb-driver-core-3.4.2.jar:na]
At Com.mongodb.connection.InternalStreamConnection.open (internalstreamconnection.java:115) ~[ Mongodb-driver-core-3.4.2.jar:na]
At Com.mongodb.connection.defaultservermonitor$servermonitorrunnable.run (defaultservermonitor.java:113) ~[ Mongodb-driver-core-3.4.2.jar:na]
At Java.lang.Thread.run (Unknown Source) [na:1.8.0_91]
caused By:java.net.ConnectException:Connection refused:connect
At Java.net.DualStackPlainSocketImpl.waitForConnect (Native Method) ~[na:1.8.0_91]
At Java.net.DualStackPlainSocketImpl.socketConnect (Unknown Source) ~[na:1.8.0_91]
At Java.net.AbstractPlainSocketImpl.doConnect (Unknown Source) ~[na:1.8.0_91]
At Java.net.AbstractPlainSocketImpl.connectToAddress (Unknown Source) ~[na:1.8.0_91]
At Java.net.AbstractPlainSocketImpl.connect (Unknown Source) ~[na:1.8.0_91]
At Java.net.PlainSocketImpl.connect (Unknown Source) ~[na:1.8.0_91]
At Java.net.SocksSocketImpl.connect (Unknown Source) ~[na:1.8.0_91]
At Java.net.Socket.connect (Unknown Source) ~[na:1.8.0_91]
At Com.mongodb.connection.SocketStreamHelper.initialize (socketstreamhelper.java:57) ~[ Mongodb-driver-core-3.4.2.jar:na]
At Com.mongodb.connection.SocketStream.open (socketstream.java:58) ~[mongodb-driver-core-3.4.2.jar:na]
... 3 Common frames omitted

Internet Baidu, found an article said that the reason is springboot automatically configured to support MongoDB. An MONGO instance is automatically instantiated when Springboot is started, and automatic configuration needs to be disabled.

Add @SpringBootApplication (exclude = Mongoautoconfiguration.class) to this note, the original link is http://blog.csdn.net/ Xuyw10000/article/details/72918360.

When I add annotations to the class, the error is resolved, but a new error log is output, as follows:

Java.lang.ClassCastException:org.springframework.boot.context.event.ApplicationFailedEvent cannot is cast to Org.springframework.boot.web.context.WebServerInitializedEvent
At Org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener ( simpleapplicationeventmulticaster.java:159) [SPRING-CONTEXT-5.0.0.RC3.JAR:5.0.0.RC3]
At Org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent ( simpleapplicationeventmulticaster.java:139) [SPRING-CONTEXT-5.0.0.RC3.JAR:5.0.0.RC3]
At Org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent ( simpleapplicationeventmulticaster.java:127) [SPRING-CONTEXT-5.0.0.RC3.JAR:5.0.0.RC3]
At Org.springframework.boot.context.event.EventPublishingRunListener.finished (Eventpublishingrunlistener.java : [SPRING-BOOT-2.0.0.M3.JAR:2.0.0.M3]
At Org.springframework.boot.SpringApplicationRunListeners.callFinishedListener ( springapplicationrunlisteners.java:79) [SPRING-BOOT-2.0.0.M3.JAR:2.0.0.M3]
At org.springframework.boot.SpringApplicationRunListeners.finished (springapplicationrunlisteners.java:72) [ SPRING-BOOT-2.0.0.M3.JAR:2.0.0.M3]
At Org.springframework.boot.SpringApplication.handleRunFailure (springapplication.java:803) [ SPRING-BOOT-2.0.0.M3.JAR:2.0.0.M3]
At Org.springframework.boot.SpringApplication.run (springapplication.java:338) [spring-boot-2.0.0.m3.jar:2.0.0.m3 ]
At Org.springframework.boot.SpringApplication.run (springapplication.java:1245) [spring-boot-2.0.0.m3.jar:2.0.0. M3]
At Org.springframework.boot.SpringApplication.run (springapplication.java:1233) [spring-boot-2.0.0.m3.jar:2.0.0. M3]
At Com.example.demo.SpringbootdemoApplication.main (springbootdemoapplication.java:22) [Classes/:na],

Copy the first line error log, search for answers on Google, need the project's Pom.xml file comment MONGO related startup statement, as follows:

<!--<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>

Restart after saving, no more error. On GitHub The original link is: https://github.com/spring-projects/spring-boot/issues/10047.

Run report mongosocketopenexception error resolution after creating Springbootdemo