解决异常 java.net.BindException: Address already in use: JVM_Bind ：8080

  在学习SpringBoot过程中, 遇到了各种问题..

G:\kgdxkj\yingyong\jdk1.8\bin\java -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:55800,suspend=y,server=n -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=55799 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=localhost -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true -Dfile.encoding=UTF-8 -classpath "G:\kgdxkj\yingyong\jdk1.8\jre\lib\charsets.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\deploy.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\ext\access-bridge-64.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\ext\cldrdata.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\ext\dnsns.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\ext\jaccess.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\ext\jfxrt.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\ext\localedata.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\ext\nashorn.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\ext\sunec.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\ext\sunjce_provider.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\ext\sunmscapi.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\ext\sunpkcs11.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\ext\zipfs.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\javaws.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\jce.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\jfr.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\jfxswt.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\jsse.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\management-agent.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\plugin.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\resources.jar;G:\kgdxkj\yingyong\jdk1.8\jre\lib\rt.jar;G:\kgdxkj\kgdxkjGIT\SpringBoot_Demo\target\classes;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-starter-web\2.1.2.RELEASE\spring-boot-starter-web-2.1.2.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-starter\2.1.2.RELEASE\spring-boot-starter-2.1.2.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot\2.1.2.RELEASE\spring-boot-2.1.2.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\2.1.2.RELEASE\spring-boot-autoconfigure-2.1.2.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-starter-logging\2.1.2.RELEASE\spring-boot-starter-logging-2.1.2.RELEASE.jar;C:\Users\Administrator\.m2\repository\ch\qos\logback\logback-classic\1.2.3\logback-classic-1.2.3.jar;C:\Users\Administrator\.m2\repository\ch\qos\logback\logback-core\1.2.3\logback-core-1.2.3.jar;C:\Users\Administrator\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.11.1\log4j-to-slf4j-2.11.1.jar;C:\Users\Administrator\.m2\repository\org\apache\logging\log4j\log4j-api\2.11.1\log4j-api-2.11.1.jar;C:\Users\Administrator\.m2\repository\org\slf4j\jul-to-slf4j\1.7.25\jul-to-slf4j-1.7.25.jar;C:\Users\Administrator\.m2\repository\javax\annotation\javax.annotation-api\1.3.2\javax.annotation-api-1.3.2.jar;C:\Users\Administrator\.m2\repository\org\yaml\snakeyaml\1.23\snakeyaml-1.23.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-starter-json\2.1.2.RELEASE\spring-boot-starter-json-2.1.2.RELEASE.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.9.8\jackson-databind-2.9.8.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.9.0\jackson-annotations-2.9.0.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.9.8\jackson-core-2.9.8.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.9.8\jackson-datatype-jdk8-2.9.8.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.9.8\jackson-datatype-jsr310-2.9.8.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.9.8\jackson-module-parameter-names-2.9.8.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\2.1.2.RELEASE\spring-boot-starter-tomcat-2.1.2.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\9.0.14\tomcat-embed-core-9.0.14.jar;C:\Users\Administrator\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\9.0.14\tomcat-embed-el-9.0.14.jar;C:\Users\Administrator\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.14\tomcat-embed-websocket-9.0.14.jar;C:\Users\Administrator\.m2\repository\org\hibernate\validator\hibernate-validator\6.0.14.Final\hibernate-validator-6.0.14.Final.jar;C:\Users\Administrator\.m2\repository\javax\validation\validation-api\2.0.1.Final\validation-api-2.0.1.Final.jar;C:\Users\Administrator\.m2\repository\org\jboss\logging\jboss-logging\3.3.2.Final\jboss-logging-3.3.2.Final.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\classmate\1.4.0\classmate-1.4.0.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-web\5.1.4.RELEASE\spring-web-5.1.4.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-beans\5.1.4.RELEASE\spring-beans-5.1.4.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-webmvc\5.1.4.RELEASE\spring-webmvc-5.1.4.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-aop\5.1.4.RELEASE\spring-aop-5.1.4.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-context\5.1.4.RELEASE\spring-context-5.1.4.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-expression\5.1.4.RELEASE\spring-expression-5.1.4.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\slf4j\slf4j-api\1.7.25\slf4j-api-1.7.25.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-core\5.1.4.RELEASE\spring-core-5.1.4.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-jcl\5.1.4.RELEASE\spring-jcl-5.1.4.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\mybatis\spring\boot\mybatis-spring-boot-starter\1.2.0\mybatis-spring-boot-starter-1.2.0.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-starter-jdbc\2.1.2.RELEASE\spring-boot-starter-jdbc-2.1.2.RELEASE.jar;C:\Users\Administrator\.m2\repository\com\zaxxer\HikariCP\3.2.0\HikariCP-3.2.0.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-jdbc\5.1.4.RELEASE\spring-jdbc-5.1.4.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-tx\5.1.4.RELEASE\spring-tx-5.1.4.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\mybatis\spring\boot\mybatis-spring-boot-autoconfigure\1.2.0\mybatis-spring-boot-autoconfigure-1.2.0.jar;C:\Users\Administrator\.m2\repository\org\mybatis\mybatis\3.4.2\mybatis-3.4.2.jar;C:\Users\Administrator\.m2\repository\org\mybatis\mybatis-spring\1.3.1\mybatis-spring-1.3.1.jar;C:\Users\Administrator\.m2\repository\mysql\mysql-connector-java\8.0.13\mysql-connector-java-8.0.13.jar;C:\Users\Administrator\.m2\repository\com\alibaba\druid\1.0.28\druid-1.0.28.jar;G:\kgdxkj\yingyong\jdk1.8\lib\jconsole.jar;G:\kgdxkj\yingyong\jdk1.8\lib\tools.jar;C:\Users\Administrator\.m2\repository\com\alibaba\fastjson\1.2.30\fastjson-1.2.30.jar;G:\kgdxkj\yingyong\IDEA\IntelliJ IDEA 2017.3.3\lib\idea_rt.jar" cn.wq.kgdxkj.KgdxkjApplication
Connected to the target VM, address: '127.0.0.1:55800', transport: 'socket'

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( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.1.2.RELEASE)

2019-02-13 14:03:22.076  INFO 22332 --- [           main] cn.wq.kgdxkj.KgdxkjApplication           : Starting KgdxkjApplication on PC-20170101 with PID 22332 (G:\kgdxkj\kgdxkjGIT\SpringBoot_Demo\target\classes started by Administrator in G:\kgdxkj\kgdxkjGIT\SpringBoot_Demo)
2019-02-13 14:03:22.080  INFO 22332 --- [           main] cn.wq.kgdxkj.KgdxkjApplication           : No active profile set, falling back to default profiles: default
2019-02-13 14:03:23.991  INFO 22332 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2019-02-13 14:03:24.023  INFO 22332 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2019-02-13 14:03:24.023  INFO 22332 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.14]
2019-02-13 14:03:24.032  INFO 22332 --- [           main] o.a.catalina.core.AprLifecycleListener   : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [G:\kgdxkj\yingyong\jdk1.8\bin;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\ProgramData\Oracle\Java\javapath;G:\kgdxkj\yingyong\jdk1.8\bin;G:\kgdxkj\yingyong\jdk1.8\jre\bin;C:\Program Files\nodejs\;C:\Windows\System32\WindowsPowerShell\v1.0;C:\HashiCorp\Vagrant\bin;C:\Windows\System32\PING.EXE;E:\activator-dist-1.3.12\activator-dist-1.3.12;G:\kgdxkj\yingyong\Maven-3.0.5\apache-maven-3.0.5\bin;G:\kgdxkj\yingyong\sbt-1.1.2\sbt\bin;G:\kgdxkj\yingyong\play-2.2.1\play-2.2.1;G:\kgdxkj\yingyong\mongodb\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;G:\kgdxkj\yingyong\zookeeper-3.4.6\bin;;C:\WINDOWS\System32\OpenSSH\;C:\Ruby24-x64\bin;C:\Users\Administrator\AppData\Local\Microsoft\WindowsApps;C:\Program Files\Microsoft VS Code\bin;C:\Users\Administrator\AppData\Roaming\npm;E:\activator-dist-1.3.12\bin;G:\richangYingyong\docker\Docker Toolbox;C:\Users\Administrator\AppData\Local\atom\bin;.]
2019-02-13 14:03:24.205  INFO 22332 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2019-02-13 14:03:24.205  INFO 22332 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 2054 ms
2019-02-13 14:03:24.931  INFO 22332 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2019-02-13 14:03:25.243 ERROR 22332 --- [           main] org.apache.catalina.util.LifecycleBase   : Failed to start component [Connector[HTTP/1.1-8080]]

org.apache.catalina.LifecycleException: Protocol handler start failed
	at org.apache.catalina.connector.Connector.startInternal(Connector.java:1004) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
	at org.apache.catalina.core.StandardService.addConnector(StandardService.java:226) [tomcat-embed-core-9.0.14.jar:9.0.14]
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.addPreviouslyRemovedConnectors(TomcatWebServer.java:259) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:197) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.startWebServer(ServletWebServerApplicationContext.java:311) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:164) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) [spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
	at cn.wq.kgdxkj.KgdxkjApplication.main(KgdxkjApplication.java:10) [classes/:na]
Caused by: java.net.BindException: Address already in use: bind
	at sun.nio.ch.Net.bind0(Native Method) ~[na:1.8.0_162]
	at sun.nio.ch.Net.bind(Net.java:433) ~[na:1.8.0_162]
	at sun.nio.ch.Net.bind(Net.java:425) ~[na:1.8.0_162]
	at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223) ~[na:1.8.0_162]
	at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74) ~[na:1.8.0_162]
	at org.apache.tomcat.util.net.NioEndpoint.initServerSocket(NioEndpoint.java:236) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
	at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:210) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
	at org.apache.tomcat.util.net.AbstractEndpoint.bindWithCleanup(AbstractEndpoint.java:1085) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
	at org.apache.tomcat.util.net.AbstractEndpoint.start(AbstractEndpoint.java:1171) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
	at org.apache.coyote.AbstractProtocol.start(AbstractProtocol.java:568) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
	at org.apache.catalina.connector.Connector.startInternal(Connector.java:1001) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
	... 14 common frames omitted

2019-02-13 14:03:25.251  INFO 22332 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2019-02-13 14:03:25.273  INFO 22332 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2019-02-13 14:03:25.279 ERROR 22332 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

The Tomcat connector configured to listen on port 8080 failed to start. The port may already be in use or the connector may be misconfigured.

Action:

Verify the connector's configuration, identify and stop any process that's listening on port 8080, or configure this application to listen on another port.

2019-02-13 14:03:25.282  INFO 22332 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Shutting down ExecutorService 'applicationTaskExecutor'
Disconnected from the target VM, address: '127.0.0.1:55800', transport: 'socket'

Process finished with exit code 1

报错原因：8080端口被占用

解决方案：

1、打开cmd

2、netstat -ano | findstr "8080"    查看端口8080被哪个进程占用；由下图可以看出，被进程为28988的占用

3、taskkill /pid  进程号  /f   如：taskkill /pid  28988  /f

4、再使用netstat -ano |findstr  端口号 ，可以再验证下该端口还开着没