3724475 - CAP Java fails to start : Failed to start bean 'webServerStartStop'

• cds bind --exec mvn spring-boot:run, fails to start due to error:
  
  

  2026-03-06T03:17:55.940Z  WARN 57120 --- [  restartedMain] o.s.b.d.a.OptionalLiveReloadServer       : Unable to start LiveReload server
  2026-03-06T03:17:55.976Z  WARN 57120 --- [  restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Failed to start bean 'webServerStartStop'
  2026-03-06T03:17:55.992Z  INFO 57120 --- [  restartedMain] .s.b.a.l.ConditionEvaluationReportLogger : 

  Error starting ApplicationContext. To display the condition evaluation report re-run your application with 'debug' enabled.
  2026-03-06T03:17:56.003Z ERROR 57120 --- [  restartedMain] o.s.b.d.LoggingFailureAnalysisReporter   : 

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

  Description:

  Web server failed to start. Port 8080 was already in use.

  Action:

  Identify and stop the process that's listening on port 8080 or configure this application to listen on another port.

• DEBUG=all cds bind --exec mvn spring-boot:run, shows:
  
  

  2026-03-06T03:18:42.558Z DEBUG 58400 --- [  restartedMain] o.s.b.d.LoggingFailureAnalysisReporter   : Application failed to start due to an exception

  org.springframework.boot.web.server.PortInUseException: Port 8080 is already in use
          at org.springframework.boot.web.server.PortInUseException.lambda$throwIfPortBindingException$0(PortInUseException.java:71) ~[spring-boot-3.5.8.jar:3.5.8]
          at org.springframework.boot.web.server.PortInUseException.lambda$ifPortBindingException$1(PortInUseException.java:86) ~[spring-boot-3.5.8.jar:3.5.8]
          at org.springframework.boot.web.server.PortInUseException.ifCausedBy(PortInUseException.java:104) ~[spring-boot-3.5.8.jar:3.5.8]
          at org.springframework.boot.web.server.PortInUseException.ifPortBindingException(PortInUseException.java:83) ~[spring-boot-3.5.8.jar:3.5.8]
          at org.springframework.boot.web.server.PortInUseException.throwIfPortBindingException(PortInUseException.java:70) ~[spring-boot-3.5.8.jar:3.5.8]
          at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:250) ~[spring-boot-3.5.8.jar:3.5.8]
          at org.springframework.boot.web.servlet.context.WebServerStartStopLifecycle.start(WebServerStartStopLifecycle.java:44) ~[spring-boot-3.5.8.jar:3.5.8]
          at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:405) ~[spring-context-6.2.14.jar:6.2.14]
          at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:394) ~[spring-context-6.2.14.jar:6.2.14]
          at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:586) ~[spring-context-6.2.14.jar:6.2.14]
          at java.base/java.lang.Iterable.forEach(Iterable.java:75) ~[na:na]
          at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:364) ~[spring-context-6.2.14.jar:6.2.14]
          at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:310) ~[spring-context-6.2.14.jar:6.2.14]
          at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:1009) ~[spring-context-6.2.14.jar:6.2.14]
          at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:630) ~[spring-context-6.2.14.jar:6.2.14]
          at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.5.8.jar:3.5.8]
          at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752) ~[spring-boot-3.5.8.jar:3.5.8]
          at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:439) ~[spring-boot-3.5.8.jar:3.5.8]
          at org.springframework.boot.SpringApplication.run(SpringApplication.java:318) ~[spring-boot-3.5.8.jar:3.5.8]
          at org.springframework.boot.SpringApplication.run(SpringApplication.java:1361) ~[spring-boot-3.5.8.jar:3.5.8]
          at org.springframework.boot.SpringApplication.run(SpringApplication.java:1350) ~[spring-boot-3.5.8.jar:3.5.8]
          at customer.products_service.Application.main(Application.java:10) ~[classes/:na]
          at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[na:na]
          at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[na:na]
          at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:50) ~[spring-boot-devtools-3.5.8.jar:3.5.8]
  Caused by: java.lang.IllegalArgumentException: standardService.connector.startFailed
          at org.apache.catalina.core.StandardService.addConnector(StandardService.java:220) ~[tomcat-embed-core-10.1.49.jar:10.1.49]
          at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.addPreviouslyRemovedConnectors(TomcatWebServer.java:310) ~[spring-boot-3.5.8.jar:3.5.8]
          at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:236) ~[spring-boot-3.5.8.jar:3.5.8]
          ... 19 common frames omitted
  Caused by: org.apache.catalina.LifecycleException: Protocol handler start failed
          at org.apache.catalina.connector.Connector.startInternal(Connector.java:1104) ~[tomcat-embed-core-10.1.49.jar:10.1.49]
          at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:164) ~[tomcat-embed-core-10.1.49.jar:10.1.49]
          at org.apache.catalina.core.StandardService.addConnector(StandardService.java:217) ~[tomcat-embed-core-10.1.49.jar:10.1.49]
          ... 21 common frames omitted
  Caused by: java.net.BindException: Address already in use
          at java.base/sun.nio.ch.Net.bind0(Native Method) ~[na:na]
          at java.base/sun.nio.ch.Net.bind(Net.java:565) ~[na:na]
          at java.base/sun.nio.ch.ServerSocketChannelImpl.netBind(ServerSocketChannelImpl.java:344) ~[na:na]
          at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:301) ~[na:na]
          at org.apache.tomcat.util.net.NioEndpoint.initServerSocket(NioEndpoint.java:264) ~[tomcat-embed-core-10.1.49.jar:10.1.49]
          at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:219) ~[tomcat-embed-core-10.1.49.jar:10.1.49]
          at org.apache.tomcat.util.net.AbstractEndpoint.bindWithCleanup(AbstractEndpoint.java:1398) ~[tomcat-embed-core-10.1.49.jar:10.1.49]
          at org.apache.tomcat.util.net.AbstractEndpoint.start(AbstractEndpoint.java:1481) ~[tomcat-embed-core-10.1.49.jar:10.1.49]
          at org.apache.coyote.AbstractProtocol.start(AbstractProtocol.java:644) ~[tomcat-embed-core-10.1.49.jar:10.1.49]
          at org.apache.catalina.connector.Connector.startInternal(Connector.java:1101) ~[tomcat-embed-core-10.1.49.jar:10.1.49]
          ... 23 common frames omitted

  2026-03-06T03:18:42.559Z ERROR 58400 --- [  restartedMain] o.s.b.d.LoggingFailureAnalysisReporter   : 

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

  Description:

  Web server failed to start. Port 8080 was already in use.

  Action:

  Identify and stop the process that's listening on port 8080 or configure this application to listen on another port.

CAP Java

cds bind --exec mvn spring-boot:run, DEBUG=all cds bind --exec mvn spring-boot:run, webServerStartStop,  , KBA , BC-XS-CDX-JAV , SAP CAP – Java runtime , Problem