Launching Spring application Address already in use

Question

I have this error launching my spring application   java -jar target gs-serving-web-content-0 1 0 jar                                                                                                                                                                                                                                                               Spring Boot                 v0 5 0 M6   2013-12-23 00 23 09 466  INFO 19252 ---             main  hello Application                          Starting Application on mbp-de-antoine home with PID 19252   Users antoine Documents workspace-sts-3 4 0 RELEASE springapp target gs-serving-web-content-0 1 0 jar started by antoine  2013-12-23 00 23 09 511  INFO 19252 ---             main  ationConfigEmbeddedWebApplicationContext   Refreshing org springframework boot context embedded AnnotationConfigEmbeddedWebApplicationContext 24024c39  startup date  Mon Dec 23 00 23 09 CET 2013   root of context hierarchy 2013-12-23 00 23 10 910  INFO 19252 ---             main  o apache catalina core StandardService     Starting service Tomcat 2013-12-23 00 23 10 910  INFO 19252 ---             main  org apache catalina core StandardEngine    Starting Servlet Engine  Apache Tomcat 7 0 42 2013-12-23 00 23 11 045  INFO 19252 ---  ost-startStop-1  o a c c C  Tomcat   localhost              Initializing Spring embedded WebApplicationContext 2013-12-23 00 23 11 046  INFO 19252 ---  ost-startStop-1  o s web context ContextLoader              Root WebApplicationContext  initialization completed in 1537 ms 2013-12-23 00 23 11 274  INFO 19252 ---  ost-startStop-1  o a c c C  Tomcat   localhost              Initializing Spring FrameworkServlet  dispatcherServlet  2013-12-23 00 23 11 274  INFO 19252 ---  ost-startStop-1  o s web servlet DispatcherServlet          FrameworkServlet  dispatcherServlet   initialization started 2013-12-23 00 23 11 409  INFO 19252 ---  ost-startStop-1  o s w s handler SimpleUrlHandlerMapping    Mapped URL path      favicon ico  onto handler of type  class org springframework web servlet resource ResourceHttpRequestHandler  2013-12-23 00 23 11 634  INFO 19252 ---  ost-startStop-1  s w s m m a RequestMappingHandlerMapping   Mapped     greeting  methods    params    headers    consumes    produces    custom      onto public java lang String hello GreetingController greeting java lang String org springframework ui Model  2013-12-23 00 23 11 717  INFO 19252 ---  ost-startStop-1  o s w s handler SimpleUrlHandlerMapping    Mapped URL path       onto handler of type  class org springframework web servlet resource ResourceHttpRequestHandler  2013-12-23 00 23 11 717  INFO 19252 ---  ost-startStop-1  o s w s handler SimpleUrlHandlerMapping    Mapped URL path   webjars     onto handler of type  class org springframework web servlet resource ResourceHttpRequestHandler  2013-12-23 00 23 12 406  INFO 19252 ---  ost-startStop-1  o s web servlet DispatcherServlet          FrameworkServlet  dispatcherServlet   initialization completed in 1132 ms 2013-12-23 00 23 12 417 ERROR 19252 ---             main  o a coyote http11 Http11NioProtocol        Failed to start end point associated with ProtocolHandler   http-nio-8080    java net BindException  Address already in use     at sun nio ch Net bind0 Native Method      at sun nio ch Net bind Net java 444      at sun nio ch Net bind Net java 436      at sun nio ch ServerSocketChannelImpl bind ServerSocketChannelImpl java 214      at sun nio ch ServerSocketAdaptor bind ServerSocketAdaptor java 74      at org apache tomcat util net NioEndpoint bind NioEndpoint java 473      at org apache tomcat util net AbstractEndpoint start AbstractEndpoint java 617      at org apache coyote AbstractProtocol start AbstractProtocol java 444      at org apache catalina connector Connector startInternal Connector java 1010      at org apache catalina util LifecycleBase start LifecycleBase java 150      at org apache catalina core StandardService startInternal StandardService java 459      at org apache catalina util LifecycleBase start LifecycleBase java 150      at org apache catalina core StandardServer startInternal StandardServer java 732      at org apache catalina util LifecycleBase start LifecycleBase java 150      at org apache catalina startup Tomcat start Tomcat java 335      at org springframework boot context embedded tomcat TomcatEmbeddedServletContainer initialize TomcatEmbeddedServletContainer java 58      at org springframework boot context embedded tomcat TomcatEmbeddedServletContainer  lt init gt  TomcatEmbeddedServletContainer java 53      at org springframework boot context embedded tomcat TomcatEmbeddedServletContainerFactory getTomcatEmbeddedServletContainer TomcatEmbeddedServletContainerFactory java 259      at org springframework boot context embedded tomcat TomcatEmbeddedServletContainerFactory getEmbeddedServletContainer TomcatEmbeddedServletContainerFactory java 140      at org springframework boot context embedded EmbeddedWebApplicationContext createEmbeddedServletContainer EmbeddedWebApplicationContext java 158      at org springframework boot context embedded EmbeddedWebApplicationContext onRefresh EmbeddedWebApplicationContext java 135      at org springframework context support AbstractApplicationContext refresh AbstractApplicationContext java 476      at org springframework boot context embedded EmbeddedWebApplicationContext refresh EmbeddedWebApplicationContext java 122      at org springframework boot SpringApplication refresh SpringApplication java 552      at org springframework boot SpringApplication run SpringApplication java 293      at org springframework boot SpringApplication run SpringApplication java 749      at org springframework boot SpringApplication run SpringApplication java 738      at hello Application main Application java 12      at sun reflect NativeMethodAccessorImpl invoke0 Native Method      at sun reflect NativeMethodAccessorImpl invoke NativeMethodAccessorImpl java 57      at sun reflect DelegatingMethodAccessorImpl invoke DelegatingMethodAccessorImpl java 43      at java lang reflect Method invoke Method java 606      at org springframework boot loader MainMethodRunner run MainMethodRunner java 53      at java lang Thread run Thread java 744   2013-12-23 00 23 12 419 ERROR 19252 ---             main  o apache catalina core StandardService     Failed to start connector  Connector org apache coyote http11 Http11NioProtocol-8080    org apache catalina LifecycleException  Failed to start component  Connector org apache coyote http11 Http11NioProtocol-8080       at org apache catalina util LifecycleBase start LifecycleBase java 154      at org apache catalina core StandardService startInternal StandardService java 459      at org apache catalina util LifecycleBase start LifecycleBase java 150      at org apache catalina core StandardServer startInternal StandardServer java 732      at org apache catalina util LifecycleBase start LifecycleBase java 150      at org apache catalina startup Tomcat start Tomcat java 335      at org springframework boot context embedded tomcat TomcatEmbeddedServletContainer initialize TomcatEmbeddedServletContainer java 58      at org springframework boot context embedded tomcat TomcatEmbeddedServletContainer  lt init gt  TomcatEmbeddedServletContainer java 53      at org springframework boot context embedded tomcat TomcatEmbeddedServletContainerFactory getTomcatEmbeddedServletContainer TomcatEmbeddedServletContainerFactory java 259      at org springframework boot context embedded tomcat TomcatEmbeddedServletContainerFactory getEmbeddedServletContainer TomcatEmbeddedServletContainerFactory java 140      at org springframework boot context embedded EmbeddedWebApplicationContext createEmbeddedServletContainer EmbeddedWebApplicationContext java 158      at org springframework boot context embedded EmbeddedWebApplicationContext onRefresh EmbeddedWebApplicationContext java 135      at org springframework context support AbstractApplicationContext refresh AbstractApplicationContext java 476      at org springframework boot context embedded EmbeddedWebApplicationContext refresh EmbeddedWebApplicationContext java 122      at org springframework boot SpringApplication refresh SpringApplication java 552      at org springframework boot SpringApplication run SpringApplication java 293      at org springframework boot SpringApplication run SpringApplication java 749      at org springframework boot SpringApplication run SpringApplication java 738      at hello Application main Application java 12      at sun reflect NativeMethodAccessorImpl invoke0 Native Method      at sun reflect NativeMethodAccessorImpl invoke NativeMethodAccessorImpl java 57      at sun reflect DelegatingMethodAccessorImpl invoke DelegatingMethodAccessorImpl java 43      at java lang reflect Method invoke Method java 606      at org springframework boot loader MainMethodRunner run MainMethodRunner java 53      at java lang Thread run Thread java 744  Caused by  org apache catalina LifecycleException  service getName     Tomcat    Protocol handler start failed     at org apache catalina connector Connector startInternal Connector java 1017      at org apache catalina util LifecycleBase start LifecycleBase java 150          24 common frames omitted Caused by  java net BindException  Address already in use     at sun nio ch Net bind0 Native Method      at sun nio ch Net bind Net java 444      at sun nio ch Net bind Net java 436      at sun nio ch ServerSocketChannelImpl bind ServerSocketChannelImpl java 214      at sun nio ch ServerSocketAdaptor bind ServerSocketAdaptor java 74      at org apache tomcat util net NioEndpoint bind NioEndpoint java 473      at org apache tomcat util net AbstractEndpoint start AbstractEndpoint java 617      at org apache coyote AbstractProtocol start AbstractProtocol java 444      at org apache catalina connector Connector startInternal Connector java 1010          25 common frames omitted  2013-12-23 00 23 12 420  INFO 19252 ---             main  o apache catalina core StandardService     Stopping service Tomcat 2013-12-23 00 23 12 430  INFO 19252 ---             main  nitializer AutoConfigurationReportLogger                                AUTO-CONFIGURATION REPORT                             Positive matches  -----------------     MessageSourceAutoConfiguration       -  ConditionalOnMissingBean  types  org springframework context MessageSource  SearchStrategy  all  found no beans  OnBeanCondition      PropertyPlaceholderAutoConfiguration propertySourcesPlaceholderConfigurer       -  ConditionalOnMissingBean  types  org springframework context support PropertySourcesPlaceholderConfigurer  SearchStrategy  current  found no beans  OnBeanCondition      ThymeleafAutoConfiguration       -  ConditionalOnClass classes found  org thymeleaf spring3 SpringTemplateEngine  OnClassCondition        -  ConditionalOnClass classes found  org thymeleaf spring3 SpringTemplateEngine  OnClassCondition      ThymeleafAutoConfiguration DefaultTemplateResolverConfiguration       -  ConditionalOnMissingBean  names  defaultTemplateResolver  SearchStrategy  all  found no beans  OnBeanCondition      ThymeleafAutoConfiguration ThymeleafDefaultConfiguration       -  ConditionalOnMissingBean  types  org thymeleaf spring3 SpringTemplateEngine  SearchStrategy  all  found no beans  OnBeanCondition      ThymeleafAutoConfiguration ThymeleafViewResolverConfiguration       -  ConditionalOnClass classes found  javax servlet Servlet  OnClassCondition        -  ConditionalOnClass classes found  javax servlet Servlet  OnClassCondition      ThymeleafAutoConfiguration ThymeleafViewResolverConfiguration thymeleafViewResolver       -  ConditionalOnMissingBean  names  thymeleafViewResolver  SearchStrategy  all  found no beans  OnBeanCondition      DispatcherServletAutoConfiguration       - found web application StandardServletEnvironment  OnWebApplicationCondition        -  ConditionalOnClass classes found  org springframework web servlet DispatcherServlet  OnClassCondition        - found web application StandardServletEnvironment  OnWebApplicationCondition        -  ConditionalOnClass classes found  org springframework web servlet DispatcherServlet  OnClassCondition        -  ConditionalOnBean  types  org springframework boot context embedded EmbeddedServletContainerFactory  SearchStrategy  all  found the following  tomcatEmbeddedServletContainerFactory   OnBeanCondition      DispatcherServletAutoConfiguration dispatcherServlet       - no DispatcherServlet found  DispatcherServletAutoConfiguration DefaultDispatcherServletCondition      EmbeddedServletContainerAutoConfiguration       - found web application StandardServletEnvironment  OnWebApplicationCondition        - found web application StandardServletEnvironment  OnWebApplicationCondition      EmbeddedServletContainerAutoConfiguration EmbeddedTomcat       -  ConditionalOnClass classes found  javax servlet Servlet org apache catalina startup Tomcat  OnClassCondition        -  ConditionalOnClass classes found  javax servlet Servlet org apache catalina startup Tomcat  OnClassCondition        -  ConditionalOnMissingBean  types  org springframework boot context embedded EmbeddedServletContainerFactory  SearchStrategy  current  found no beans  OnBeanCondition      ServerPropertiesAutoConfiguration serverProperties       -  ConditionalOnMissingBean  types  org springframework boot context embedded properties ServerProperties  SearchStrategy  all  found no beans  OnBeanCondition      WebMvcAutoConfiguration       - found web application StandardServletEnvironment  OnWebApplicationCondition        -  ConditionalOnClass classes found  javax servlet Servlet org springframework web servlet DispatcherServlet org springframework web servlet config annotation WebMvcConfigurerAdapter  OnClassCondition        - found web application StandardServletEnvironment  OnWebApplicationCondition        -  ConditionalOnClass classes found  javax servlet Servlet org springframework web servlet DispatcherServlet org springframework web servlet config annotation WebMvcConfigurerAdapter  OnClassCondition        -  ConditionalOnMissingBean  types  org springframework web servlet config annotation WebMvcConfigurationSupport  SearchStrategy  all  found no beans  OnBeanCondition      WebMvcAutoConfiguration hiddenHttpMethodFilter       -  ConditionalOnMissingBean  types  org springframework web filter HiddenHttpMethodFilter  SearchStrategy  all  found no beans  OnBeanCondition      WebMvcAutoConfiguration WebMvcAutoConfigurationAdapter defaultViewResolver       -  ConditionalOnMissingBean  types  org springframework web servlet view InternalResourceViewResolver  SearchStrategy  all  found no beans  OnBeanCondition    Negative matches  -----------------     RabbitAutoConfiguration       - required  ConditionalOnClass classes not found  org springframework amqp rabbit core RabbitTemplate com rabbitmq client Channel  OnClassCondition      AopAutoConfiguration       - required  ConditionalOnClass classes not found  org aspectj lang annotation Aspect org aspectj lang reflect Advice  OnClassCondition      BatchAutoConfiguration       - required  ConditionalOnClass classes not found  org springframework batch core launch JobLauncher  OnClassCondition      JpaRepositoriesAutoConfiguration       - required  ConditionalOnClass classes not found  org springframework data jpa repository JpaRepository  OnClassCondition      MongoRepositoriesAutoConfiguration       - required  ConditionalOnClass classes not found  com mongodb Mongo org springframework data mongodb repository MongoRepository  OnClassCondition      DataSourceAutoConfiguration       - required  ConditionalOnClass classes not found  org springframework jdbc datasource embedded EmbeddedDatabaseType  OnClassCondition      DataSourceTransactionManagerAutoConfiguration       - required  ConditionalOnClass classes not found  org springframework jdbc core JdbcTemplate org springframework transaction PlatformTransactionManager  OnClassCondition      JmsTemplateAutoConfiguration       - required  ConditionalOnClass classes not found  org springframework jms core JmsTemplate javax jms ConnectionFactory  OnClassCondition      DeviceResolverAutoConfiguration       - required  ConditionalOnClass classes not found  org springframework mobile device DeviceResolverHandlerInterceptor org springframework mobile device DeviceHandlerMethodArgumentResolver  OnClassCondition      HibernateJpaAutoConfiguration       - required  ConditionalOnClass classes not found  org springframework orm jpa LocalContainerEntityManagerFactoryBean org springframework transaction annotation EnableTransactionManagement javax persistence EntityManager org hibernate ejb HibernateEntityManager  OnClassCondition      ReactorAutoConfiguration       - required  ConditionalOnClass classes not found  reactor spring context config EnableReactor  OnClassCondition      ThymeleafAutoConfiguration ThymeleafSecurityDialectConfiguration       - required  ConditionalOnClass classes not found  org thymeleaf extras springsecurity3 dialect SpringSecurityDialect  OnClassCondition      ThymeleafAutoConfiguration ThymeleafWebLayoutConfiguration       - required  ConditionalOnClass classes not found  nz net ultraq thymeleaf LayoutDialect  OnClassCondition      EmbeddedServletContainerAutoConfiguration EmbeddedJetty       - required  ConditionalOnClass classes not found  org eclipse jetty server Server org eclipse jetty util Loader  OnClassCondition      MultipartAutoConfiguration       -  ConditionalOnClass classes found  javax servlet Servlet org springframework web multipart support StandardServletMultipartResolver  OnClassCondition        -  ConditionalOnClass classes found  javax servlet Servlet org springframework web multipart support StandardServletMultipartResolver  OnClassCondition        -  ConditionalOnBean  types  javax servlet MultipartConfigElement  SearchStrategy  all  found no beans  OnBeanCondition      WebMvcAutoConfiguration WebMvcAutoConfigurationAdapter beanNameViewResolver       -  ConditionalOnBean  types  org springframework web servlet View  SearchStrategy  all  found no beans  OnBeanCondition      WebMvcAutoConfiguration WebMvcAutoConfigurationAdapter viewResolver       -  ConditionalOnBean  types  org springframework web servlet View  SearchStrategy  all  found no beans  OnBeanCondition      WebSocketAutoConfiguration       - required  ConditionalOnClass classes not found  org springframework web socket WebSocketHandler  OnClassCondition     java lang reflect InvocationTargetException     at sun reflect NativeMethodAccessorImpl invoke0 Native Method      at sun reflect NativeMethodAccessorImpl invoke NativeMethodAccessorImpl java 57      at sun reflect DelegatingMethodAccessorImpl invoke DelegatingMethodAccessorImpl java 43      at java lang reflect Method invoke Method java 606      at org springframework boot loader MainMethodRunner run MainMethodRunner java 53      at java lang Thread run Thread java 744  Caused by  org springframework context ApplicationContextException  Unable to start embedded container  nested exception is org springframework boot context embedded EmbeddedServletContainerException  Unable to start embdedded Tomcat     at org springframework boot context embedded EmbeddedWebApplicationContext onRefresh EmbeddedWebApplicationContext java 138      at org springframework context support AbstractApplicationContext refresh AbstractApplicationContext java 476      at org springframework boot context embedded EmbeddedWebApplicationContext refresh EmbeddedWebApplicationContext java 122      at org springframework boot SpringApplication refresh SpringApplication java 552      at org springframework boot SpringApplication run SpringApplication java 293      at org springframework boot SpringApplication run SpringApplication java 749      at org springframework boot SpringApplication run SpringApplication java 738      at hello Application main Application java 12          6 more Caused by  org springframework boot context embedded EmbeddedServletContainerException  Unable to start embdedded Tomcat     at org springframework boot context embedded tomcat TomcatEmbeddedServletContainer initialize TomcatEmbeddedServletContainer java 85      at org springframework boot context embedded tomcat TomcatEmbeddedServletContainer  lt init gt  TomcatEmbeddedServletContainer java 53      at org springframework boot context embedded tomcat TomcatEmbeddedServletContainerFactory getTomcatEmbeddedServletContainer TomcatEmbeddedServletContainerFactory java 259      at org springframework boot context embedded tomcat TomcatEmbeddedServletContainerFactory getEmbeddedServletContainer TomcatEmbeddedServletContainerFactory java 140      at org springframework boot context embedded EmbeddedWebApplicationContext createEmbeddedServletContainer EmbeddedWebApplicationContext java 158      at org springframework boot context embedded EmbeddedWebApplicationContext onRefresh EmbeddedWebApplicationContext java 135          13 more Caused by  java lang IllegalStateException  Tomcat connector in failed state     at org springframework boot context embedded tomcat TomcatEmbeddedServletContainer initialize TomcatEmbeddedServletContainer java 81          18 more   I think this is because my port is used  My port 8080 is used so I try the port 8181 I have no application on the port 8181  in the tomcat server xml I set the port to 8181 but the problem persist  I find this post   Alternate port for Tomcat  not 8080  when starting with Maven   But I have the same problem  after launching mvn -Dmaven tomcat port 8181 tomcat run-war  I don t realy understand how to maven is linked to the tomcat server This is my pom xml   lt  xml version  1 0  encoding  UTF-8   gt   lt project xmlns  http   maven apache org POM 4 0 0  xmlns xsi  http   www w3 org 2001 XMLSchema-instance      xsi schemaLocation  http   maven apache org POM 4 0 0 http   maven apache org xsd maven-4 0 0 xsd  gt       lt modelVersion gt 4 0 0 lt  modelVersion gt        lt groupId gt org springframework lt  groupId gt       lt artifactId gt gs-serving-web-content lt  artifactId gt       lt version gt 0 1 0 lt  version gt        lt parent gt           lt groupId gt org springframework boot lt  groupId gt           lt artifactId gt spring-boot-starter-parent lt  artifactId gt           lt version gt 0 5 0 M6 lt  version gt       lt  parent gt        lt dependencies gt           lt dependency gt               lt groupId gt org springframework boot lt  groupId gt               lt artifactId gt spring-boot-starter-web lt  artifactId gt           lt  dependency gt           lt dependency gt               lt groupId gt org thymeleaf lt  groupId gt               lt artifactId gt thymeleaf-spring3 lt  artifactId gt           lt  dependency gt       lt  dependencies gt        lt properties gt           lt start-class gt hello Application lt  start-class gt       lt  properties gt        lt build gt           lt plugins gt               lt plugin gt                   lt groupId gt org springframework boot lt  groupId gt                   lt artifactId gt spring-boot-maven-plugin lt  artifactId gt               lt  plugin gt           lt  plugins gt       lt  build gt        lt repositories gt           lt repository gt               lt id gt spring-milestone lt  id gt               lt url gt http   repo spring io libs-milestone lt  url gt               lt snapshots gt                   lt enabled gt false lt  enabled gt               lt  snapshots gt           lt  repository gt       lt  repositories gt        lt pluginRepositories gt           lt pluginRepository gt               lt id gt spring-milestone lt  id gt               lt url gt http   repo spring io libs-milestone lt  url gt               lt snapshots gt                   lt enabled gt false lt  enabled gt               lt  snapshots gt           lt  pluginRepository gt       lt  pluginRepositories gt    lt  project gt    Thanks for your help

User · Answer

Run the following command to search for the process that is using the port

lsof -i :<portNumber> | grep LISTEN

in your case this will be -->

lsof -i :8080 | grep LISTEN
java    78960 xyxss  119u  IPv6 0x6c20d372bc88c27d      0t0  TCP *:8092 (LISTEN)

The 78960 is the process id, use the following command to kill the process

kill -9 78960

Launch the application again.

User · Answer

I was looking for a solution for Windows but didn t found any  Finally  figured out that that there is a dangling java application using the port  Maybe it s the earlier instance of the spring application and ended the process  I used tcpview from Microsoft  It shows services applications using which port on your computer   You can end the process  And Done

User · Answer

This is because the port is already running in the background So you can restart the eclipse and try again  OR open the file application properties and change the value of  server port  to some other value like ex - 8000 8181

User · Answer

Close the application  then restart it after changing to a new port     port 8181    You can use any new unused port  Here  I used port 8181

User · Answer

This only worked for me by setting additional properties and using available arbitrary port numbers  like this    YML    src main resources application yml  server    port  18181 management    port  9191 tomcat    jvmroute  5478   ajp      port  4512     redirectPort  1236    Properties     src main resources application properties  server port 18181 management port 9191 tomcat jvmroute 5478 tomcat ajp port 4512 tomcat ajp redirectPort 1236

User · Answer

In my case looking in the servers window only showed a tomcat server that I had never used for this project   My SpringBoot project used an embedded tomcat server and it did not stop when my application finished   This button which I indicate with a red arrow will stop the application and the Tomcat server so next time I run the application I will not get the error that an Instance of Tomcat is already running on port 8080  actual error messages   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  Caused by  java net BindException  Address already in use Caused by  org apache catalina LifecycleException  service getName     quot Tomcat quot   Protocol handler start failed  I will now be looking into a way to shut down all services on completion of my SpringBoot Consuming Rest application in this tutorial https   spring io guides gs consuming-rest  spring-boot

User · Answer

You need to stop the server before re-launching  Look for the red box icon or server view

User · Answer

Spring Boot uses embedded Tomcat by default  but it handles it differently without using tomcat-maven-plugin  To change the port use --server port parameter for example   java -jar target gs-serving-web-content-0 1 0 jar --server port 8181   Update  Alternatively put server port 8181 into application properties  or application yml

User · Answer

This error basically happens when the specific port is not free  So there are two solutions  you can free that port by killing or closing the service which is using it or you can run your application  tomcat  on a different port   Solution 1  Free the port  On a Linux machine you can find the process-id of port s consumer and then kill it  Use the following command  it is assume that the default port is 8080   netstat -pnltu   grep -i  8080    The output of the above-mentioned command would be something like   tcp6   0  0    8080              LISTEN      20674 java    Then you can easily kill the process with its processid   kill 20674   On a windows machine to find a processid use netstat -ano -p tcp  find  8080   To kill the process use taskkill  F  PID 1234  instead of 1234 enter the founded processid    Solution 2  Change the default port  In the development process developers use the port 8080 that you can change it easily  You need to specify your desired port number in the application properties file of your project   src main resources application properties  by using the following specification   server port 8081   You can also set an alternative port number while executing the  jar file   - java -jar spring-boot-application jar --server port 8081   Please notice that sometimes  not necessarily  you have to change other ports too like   management port  tomcat jvmroute  tomcat ajp port  tomcat ajp redirectPort  etc

User · Answer

You have another process that   s listening on port 8080 which is the default port that   s used by Spring Boot   s web support  You either need to stop that process or configure your app to listen on another port   You can change the port configuration by adding server port 4040  for example  to src main resources application properties

User · Answer

Configure another port number eg 8181  in  src main resources application properties     server port 8181

User · Answer

you can configure another port number in your IDE   src main resources application properties  server port 8081  otherwise right click on the IDE console tab and select Terminate Disconnect All

User · Answer

In Eclipse  if Spring Tool Suite is installed  you can go to Boot Dashboard and expand local in explorer and right click on the application that is running on port 8080 and stop it before you re run your application

User · Answer

In your application properties file -   src main resources application properties  Change the port number to something like this -  server port 8181  Or alternatively you can provide alternative port number while executing your jar file - java -jar resource-server build libs resource-server jar --server port 8888

User · Answer

In my case  Oracle TNS Service was using port 8080  found that using running the command  netstat - anob  as an administrator  Simply used Shutdown Database from the Windows start menu to stop that service and was able to start the SpringBoot app without any issue   Also if you cannot find out which app is using the 8080 port and just want to run the SprintBoot app  you can click on Run As    and in the VM arguments enter   -Dserver port 0  this will pick any random available port  or you can be specific like  -Dserver port 8081  Hope it helps

User · Answer

I try to change port number in the following file -  src main resources application-prod yml  And inside this file I made this change   server      port  8100   or whatever you want   I hope that this will works good for you

User · Answer

Using IntelliJ  I got this error when I tried to run a Spring app while there was one app already running  I had to stop the first one  After that  running the second app didn t return any errors

User · Answer

Basically the default server usually run on the background at port 8080  Open services msc and stop tomcat server and try running the spring boot application again

User · Answer

I was getting same issue  i e  protocol handler start failed  Cause was port is already in use  I found whether the port was in use or not  It was  So I killed the process that was running on that port and restarted my spring boot application  And it worked

User · Answer

I would suggest to kill the port number  It worked for me  netstat -ano   findstr  yourPortNumber taskkill  PID typeyourPIDhere  F

User · Answer

I resolved this problem  by stop the application  red square in Eclipse  before run again  If you don t stop it   the application stay in run mode   so port still used

User · Answer

Right click in console and click Terminate Disconnect All option   OR  Click on  Display selected console  icon on top right corner of the console window and  choose and terminate the console which holds the port still

User · Answer

It is really old question  Maybe this is usefull  Focusing in your title problem  it is how I start my applications and then I can easily shutdown them  Change the port number for each application you want to start as mentioned above    application properties   using curl -X POST localhost 8080 actuator shutdown to avoid   netstat -ano   find  8080   taskkill  F  PID xxxx  xxxx stands for PID  management endpoints web exposure include   management endpoint shutdown enabled true endpoints shutdown enabled true   add this dependency    lt dependency gt       lt groupId gt org springframework boot lt  groupId gt       lt artifactId gt spring-boot-starter-actuator lt  artifactId gt   lt  dependency gt    Now you can shotdown easily by  curl -X POST localhost 8080 actuator shutdown

User · Answer

first  check that who uses port 8080    telnet localhost 8080 use browser to open http   localhost 8080   if the port 8080 is in use  change the listening port to 8181   if you use IDEA  modify start configuration   Run-  Edit Configuration enter image description here  if you use mvn spring-boot  then use the command   mvn spring-boot run -Dserver port 8181   if you use java -jar  then use the command   java -jar xxxx jar --server port 8181

User · Answer

You can resolve this following these steps    Right click on the project you are running  Click on Run as and Run Configurations from the option  A new run configuration will open  Under Spring Boot Tab see for Override properties  Add the property-value pair as server port 8181  or any other port of your choice  This will override the default port which is 8080

[java] Launching Spring application Address already in use

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