This is most commonly occurring error that troubles Spring Boot Beginners.
Sometimes even after stopping the Spring Boot application from IDE, process running on a particular port (in this case 8080) is not killed and following error occurs. 
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50 |   .   ____          _            __ _ _ /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/  ___)| |_)| | | | | || (_| |  ) ) ) )  '  |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ [32m :: Spring Boot ::  [39m       [2m (v2.2.2.RELEASE) [0;39m [2m2020-01-0514:31:13.996 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mc.sud.demo.SudarshanStarterApplication   [0;39m  [2m: [0;39m Starting SudarshanStarterApplication on FWS-CHE-LT-3266.local with PID 23513(/Users/sdhiray/Documents/workspace-sts-3.9.11.RELEASE/SudarshanStarter/target/classes started by sdhiray in /Users/sdhiray/Documents/workspace-sts-3.9.11.RELEASE/SudarshanStarter) [2m2020-01-0514:31:13.999 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mc.sud.demo.SudarshanStarterApplication   [0;39m  [2m: [0;39m No active profile set, falling back to defaultprofiles: default [2m2020-01-0514:31:14.556 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36m.s.d.r.c.RepositoryConfigurationDelegate [0;39m  [2m: [0;39m Bootstrapping Spring Data JPA repositories in DEFAULT mode. [2m2020-01-0514:31:14.613 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36m.s.d.r.c.RepositoryConfigurationDelegate [0;39m  [2m: [0;39m Finished Spring Data repository scanning in 44ms. Found 1JPA repository interfaces. [2m2020-01-0514:31:14.835 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mtrationDelegate$BeanPostProcessorChecker [0;39m  [2m: [0;39m Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration'of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration] is not eligible forgetting processed by all BeanPostProcessors (forexample: not eligible forauto-proxying) [2m2020-01-0514:31:15.076 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.s.b.w.embedded.tomcat.TomcatWebServer  [0;39m  [2m: [0;39m Tomcat initialized with port(s): 8080(http) [2m2020-01-0514:31:15.084 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.apache.catalina.core.StandardService   [0;39m  [2m: [0;39m Starting service [Tomcat] [2m2020-01-0514:31:15.084 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36morg.apache.catalina.core.StandardEngine  [0;39m  [2m: [0;39m Starting Servlet engine: [Apache Tomcat/9.0.29] [2m2020-01-0514:31:15.136 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.a.c.c.C.[Tomcat].[localhost].[/]       [0;39m  [2m: [0;39m Initializing Spring embedded WebApplicationContext [2m2020-01-0514:31:15.136 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.s.web.context.ContextLoader            [0;39m  [2m: [0;39m Root WebApplicationContext: initialization completed in 1099ms [2m2020-01-0514:31:15.253 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mcom.zaxxer.hikari.HikariDataSource       [0;39m  [2m: [0;39m HikariPool-1- Starting... [2m2020-01-0514:31:15.589 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mcom.zaxxer.hikari.HikariDataSource       [0;39m  [2m: [0;39m HikariPool-1- Start completed. [2m2020-01-0514:31:15.679 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.hibernate.jpa.internal.util.LogHelper  [0;39m  [2m: [0;39m HHH000204: Processing PersistenceUnitInfo [name: default] [2m2020-01-0514:31:15.754 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36morg.hibernate.Version                    [0;39m  [2m: [0;39m HHH000412: Hibernate Core {5.4.9.Final} [2m2020-01-0514:31:15.885 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.hibernate.annotations.common.Version   [0;39m  [2m: [0;39m HCANN000001: Hibernate Commons Annotations {5.1.0.Final} [2m2020-01-0514:31:15.976 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36morg.hibernate.dialect.Dialect            [0;39m  [2m: [0;39m HHH000400: Using dialect: org.hibernate.dialect.MySQL57Dialect [2m2020-01-0514:31:16.433 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.h.e.t.j.p.i.JtaPlatformInitiator       [0;39m  [2m: [0;39m HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform] [2m2020-01-0514:31:16.439 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mj.LocalContainerEntityManagerFactoryBean [0;39m  [2m: [0;39m Initialized JPA EntityManagerFactory forpersistence unit 'default' [2m2020-01-0514:31:16.662 [0;39m  [33m WARN [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mJpaBaseConfiguration$JpaWebConfiguration [0;39m  [2m: [0;39m spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable thiswarning [2m2020-01-0514:31:16.775 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.s.s.concurrent.ThreadPoolTaskExecutor  [0;39m  [2m: [0;39m Initializing ExecutorService 'applicationTaskExecutor' [2m2020-01-0514:31:16.987 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.apache.catalina.core.StandardService   [0;39m  [2m: [0;39m Stopping service [Tomcat] [2m2020-01-0514:31:17.005 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mConditionEvaluationReportLoggingListener [0;39m  [2m: [0;39m Error starting ApplicationContext. To display the conditions report re-run your application with 'debug'enabled. [2m2020-01-0514:31:17.009 [0;39m  [31mERROR [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.s.b.d.LoggingFailureAnalysisReporter   [0;39m  [2m: [0;39m ***************************APPLICATION FAILED TO START***************************Description:Web server failed to start. Port 8080was already in use.Action:Identify and stop the process that's listening on port 8080or configure thisapplication to listen on another port. [2m2020-01-0514:31:17.011 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.s.s.concurrent.ThreadPoolTaskExecutor  [0;39m  [2m: [0;39m Shutting down ExecutorService 'applicationTaskExecutor' [2m2020-01-0514:31:17.011 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mj.LocalContainerEntityManagerFactoryBean [0;39m  [2m: [0;39m Closing JPA EntityManagerFactory forpersistence unit 'default' [2m2020-01-0514:31:17.012 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mcom.zaxxer.hikari.HikariDataSource       [0;39m  [2m: [0;39m HikariPool-1- Shutdown initiated... [2m2020-01-0514:31:17.015 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mcom.zaxxer.hikari.HikariDataSource       [0;39m  [2m: [0;39m HikariPool-1- Shutdown completed. | 
  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 [32m :: Spring Boot ::  [39m       [2m (v2.2.2.RELEASE) [0;39m
 [2m2020-01-05 14:31:13.996 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mc.sud.demo.SudarshanStarterApplication   [0;39m  [2m: [0;39m Starting SudarshanStarterApplication on FWS-CHE-LT-3266.local with PID 23513 (/Users/sdhiray/Documents/workspace-sts-3.9.11.RELEASE/SudarshanStarter/target/classes started by sdhiray in /Users/sdhiray/Documents/workspace-sts-3.9.11.RELEASE/SudarshanStarter)
 [2m2020-01-05 14:31:13.999 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mc.sud.demo.SudarshanStarterApplication   [0;39m  [2m: [0;39m No active profile set, falling back to default profiles: default
 [2m2020-01-05 14:31:14.556 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36m.s.d.r.c.RepositoryConfigurationDelegate [0;39m  [2m: [0;39m Bootstrapping Spring Data JPA repositories in DEFAULT mode.
 [2m2020-01-05 14:31:14.613 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36m.s.d.r.c.RepositoryConfigurationDelegate [0;39m  [2m: [0;39m Finished Spring Data repository scanning in 44ms. Found 1 JPA repository interfaces.
 [2m2020-01-05 14:31:14.835 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mtrationDelegate$BeanPostProcessorChecker [0;39m  [2m: [0;39m Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
 [2m2020-01-05 14:31:15.076 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.s.b.w.embedded.tomcat.TomcatWebServer  [0;39m  [2m: [0;39m Tomcat initialized with port(s): 8080 (http)
 [2m2020-01-05 14:31:15.084 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.apache.catalina.core.StandardService   [0;39m  [2m: [0;39m Starting service [Tomcat]
 [2m2020-01-05 14:31:15.084 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36morg.apache.catalina.core.StandardEngine  [0;39m  [2m: [0;39m Starting Servlet engine: [Apache Tomcat/9.0.29]
 [2m2020-01-05 14:31:15.136 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.a.c.c.C.[Tomcat].[localhost].[/]       [0;39m  [2m: [0;39m Initializing Spring embedded WebApplicationContext
 [2m2020-01-05 14:31:15.136 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.s.web.context.ContextLoader            [0;39m  [2m: [0;39m Root WebApplicationContext: initialization completed in 1099 ms
 [2m2020-01-05 14:31:15.253 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mcom.zaxxer.hikari.HikariDataSource       [0;39m  [2m: [0;39m HikariPool-1 - Starting...
 [2m2020-01-05 14:31:15.589 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mcom.zaxxer.hikari.HikariDataSource       [0;39m  [2m: [0;39m HikariPool-1 - Start completed.
 [2m2020-01-05 14:31:15.679 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.hibernate.jpa.internal.util.LogHelper  [0;39m  [2m: [0;39m HHH000204: Processing PersistenceUnitInfo [name: default]
 [2m2020-01-05 14:31:15.754 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36morg.hibernate.Version                    [0;39m  [2m: [0;39m HHH000412: Hibernate Core {5.4.9.Final}
 [2m2020-01-05 14:31:15.885 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.hibernate.annotations.common.Version   [0;39m  [2m: [0;39m HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
 [2m2020-01-05 14:31:15.976 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36morg.hibernate.dialect.Dialect            [0;39m  [2m: [0;39m HHH000400: Using dialect: org.hibernate.dialect.MySQL57Dialect
 [2m2020-01-05 14:31:16.433 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.h.e.t.j.p.i.JtaPlatformInitiator       [0;39m  [2m: [0;39m HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
 [2m2020-01-05 14:31:16.439 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mj.LocalContainerEntityManagerFactoryBean [0;39m  [2m: [0;39m Initialized JPA EntityManagerFactory for persistence unit 'default'
 [2m2020-01-05 14:31:16.662 [0;39m  [33m WARN [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mJpaBaseConfiguration$JpaWebConfiguration [0;39m  [2m: [0;39m spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
 [2m2020-01-05 14:31:16.775 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.s.s.concurrent.ThreadPoolTaskExecutor  [0;39m  [2m: [0;39m Initializing ExecutorService 'applicationTaskExecutor'
 [2m2020-01-05 14:31:16.987 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.apache.catalina.core.StandardService   [0;39m  [2m: [0;39m Stopping service [Tomcat]
 [2m2020-01-05 14:31:17.005 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mConditionEvaluationReportLoggingListener [0;39m  [2m: [0;39m 
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
[2m2020-01-05 14:31:17.009 [0;39m  [31mERROR [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.s.b.d.LoggingFailureAnalysisReporter   [0;39m  [2m: [0;39m 
***************************
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.
[2m2020-01-05 14:31:17.011 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mo.s.s.concurrent.ThreadPoolTaskExecutor  [0;39m  [2m: [0;39m Shutting down ExecutorService 'applicationTaskExecutor'
 [2m2020-01-05 14:31:17.011 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mj.LocalContainerEntityManagerFactoryBean [0;39m  [2m: [0;39m Closing JPA EntityManagerFactory for persistence unit 'default'
 [2m2020-01-05 14:31:17.012 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mcom.zaxxer.hikari.HikariDataSource       [0;39m  [2m: [0;39m HikariPool-1 - Shutdown initiated...
 [2m2020-01-05 14:31:17.015 [0;39m  [32m INFO [0;39m  [35m23513 [0;39m  [2m--- [0;39m  [2m[           main] [0;39m  [36mcom.zaxxer.hikari.HikariDataSource       [0;39m  [2m: [0;39m HikariPool-1 - Shutdown completed.
Solution:
It can be resolved by following given steps(in accordance with your OS):
WINDOWS
1. Open command prompt & Check what processes are running at available ports
netstat -ao |find /i "listening"
We get following kind of output:
TCP    0.0.0.0:7981           machinename:0        LISTENING       2428
TCP    0.0.0.0:7982           machinename:0        LISTENING       2428
TCP    0.0.0.0:8080           machinename:0        LISTENING       12704
TCP    0.0.0.0:8500           machinename:0        LISTENING       2428
i.e. Port Numbers and what Process Id they are listening to
2. Stop process running at your port number. (In this case it is 8080 & Process Id is 12704)
Taskkill /F /IM 12704
Please mention correct PID, otherwise you might end up killing some other important process.
Other solution could be:
1. Go to Task Manager and kill java(Java(TM) Platform SE binary) process (It will close your IDE, which might not be desired)
2. Restart your IDE
MacOS 
1. Open Terminal & Check what process is running at port in error
OR
We get following kind of output(using lsof):
i.e. Process Ids that are running on port.
2. Stop process running at your port number. (In this case it is 8080 & Process Id is 12704)
1. Open Terminal & Check what process is running at port in error
sudo lsof -i tcp:8080 (Mention port number in error)
OR
netstat -vanp tcp | grep 3000
We get following kind of output(using lsof):
COMMAND   PID    USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
name    22758 user   16u  IPv4 0x449ce55d62d46bc7      0t0  TCP localhost:hbci (LISTEN)
name    22758 user   17u  IPv6 0x449ce55d5f4a1a87      0t0  TCP localhost:hbci (LISTEN)
i.e. Process Ids that are running on port.
2. Stop process running at your port number. (In this case it is 8080 & Process Id is 12704)
kill -9 22758Please mention correct PID, otherwise you might end up killing some other important process.
LINUX 
It is same as that of MacOS
1. Open Terminal & Check what process is running at port in error
OR
We get following kind of output(using lsof):
i.e. Process Ids that are running on port.
2. Stop process running at your port number. (In this case it is 8080 & Process Id is 12704)
It is same as that of MacOS
1. Open Terminal & Check what process is running at port in error
sudo lsof -i tcp:8080 (Mention port number in error)
OR
netstat -vanp tcp | grep 3000
We get following kind of output(using lsof):
COMMAND   PID USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
java    23672 sine  238u  IPv6 3028222      0t0  TCP localhost:http-alt (LISTEN)
i.e. Process Ids that are running on port.
2. Stop process running at your port number. (In this case it is 8080 & Process Id is 12704)
kill -9 22758Please mention correct PID, otherwise you might end up killing some other important process.
Hope this post helps you !
In case you have any better solutions please add your comments 😊
 
You really helped me. Thanks
ReplyDeleteI am glad this post helped you :)
DeleteThanks
ReplyDeleteThis comment has been removed by the author.
ReplyDeleteThanks for the help bud.
ReplyDeletei gave this line netstat -ao |find /i "listening" on cmd (windows)
ReplyDeletei got no output why??
or simply i restarted my laptop and it is ok now!
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