SpringBoot Application Context error: : Kotlin, Gradle,Database, Docker Postgresql - postgresql

Question

I wanted to setup a connection between my postgresql database, which is inside a docker container and my Project.
The Docker an everything is set up via a docker compose file which looks like this:
version: '3.8'
services:
db:
container_name: postgres_container
image: postgres
restart: always
environment:
POSTGRES_DB: postgres_db
POSTGRES_USER: admin
POSTGRES_PASSWORD: secret
PGDATA: /var/lib/postgresql/data
ports:
- "5432:5432"
volumes:
- db-data:/var/lib/postgresql/data
pgadmin:
container_name: pgadmin4_container
image: dpage/pgadmin4:5.5
restart: always
environment:
PGADMIN_DEFAULT_EMAIL: admin#admin.com
PGADMIN_DEFAULT_PASSWORD: secret
PGADMIN_LISTEN_PORT: 80
ports:
- "8080:80"
volumes:
- pgadmin-data:/var/lib/pgadmin
links:
- "db:pgsql-server"
volumes:
db-data:
pgadmin-data:
My Project is supposed to be written in Kotlin an I have set up Spring Boot with the initializer, which looked like following:
enter image description here
I have added the following into the application properties file to get a connection to the database.
spring.datasource.url=jdbc:postgresql://localhost:5432/postgres_db
spring.datasource.username=admin
spring.datasource.password=secret
spring.jpa.database-platform=org.hibernate.dialect.PostgreSQLDialect
spring.jpa.hibernate.ddl-auto=update
This is my main file:
package com.nosiaj.nstudycloud
import org.springframework.boot.autoconfigure.SpringBootApplication
import org.springframework.boot.runApplication
#SpringBootApplication
class NstudycloudApplication
fun main(args: Array<String>) {
runApplication<NstudycloudApplication>(*args)
}
And I wanted to create a table via code
package com.nosiaj.nstudycloud.entity
import javax.persistence.Entity
import javax.persistence.Id
import javax.persistence.Table
#Table(name="customer")
#Entity
class Customer {
#Id
private var uId: String = TODO("initialize me")
private val firstName: String
private val lastName: String
private val email: String
private val phone: String
private val IBAN: String
}
This is my build.gradle.kts file:
plugins {
id("org.springframework.boot") version "2.7.2"
id("io.spring.dependency-management") version "1.0.12.RELEASE"
kotlin("jvm") version "1.6.21"
kotlin("plugin.spring") version "1.6.21"
kotlin("plugin.jpa") version "1.6.21"
}
group = "com.nosiaj"
version = "0.0.1-SNAPSHOT"
java.sourceCompatibility = JavaVersion.VERSION_17
repositories {
mavenCentral()
}
dependencies {
implementation("org.springframework.boot:spring-boot-starter-data-jpa")
implementation("org.springframework.boot:spring-boot-starter-web")
implementation("com.fasterxml.jackson.module:jackson-module-kotlin")
implementation("org.jetbrains.kotlin:kotlin-reflect")
implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
runtimeOnly("org.postgresql:postgresql")
testImplementation("org.springframework.boot:spring-boot-starter-test")
}
tasks.withType<KotlinCompile> {
kotlinOptions {
freeCompilerArgs = listOf("-Xjsr305=strict")
jvmTarget = "17"
}
}
tasks.withType<Test> {
useJUnitPlatform()
}
Now when I start the application it connects to the database and creates the table, but I still get Error and the server stops. This is the Output:
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.7.2)
2022-08-07 16:54:22.736 INFO 55209 --- [ main] c.n.n.NstudycloudApplicationKt : Starting NstudycloudApplicationKt using Java 17.0.4 on simba-desktop with PID 55209 (/home/simba/Dokumente/Project/nstudycloud/nstudycloud/build/classes/kotlin/main started by simba in /home/simba/Dokumente/Project/nstudycloud/nstudycloud)
2022-08-07 16:54:22.739 INFO 55209 --- [ main] c.n.n.NstudycloudApplicationKt : No active profile set, falling back to 1 default profile: "default"
2022-08-07 16:54:23.342 INFO 55209 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2022-08-07 16:54:23.359 INFO 55209 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 3 ms. Found 0 JPA repository interfaces.
2022-08-07 16:54:23.743 INFO 55209 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2022-08-07 16:54:23.750 INFO 55209 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2022-08-07 16:54:23.751 INFO 55209 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.65]
2022-08-07 16:54:23.812 INFO 55209 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2022-08-07 16:54:23.812 INFO 55209 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1026 ms
2022-08-07 16:54:23.949 INFO 55209 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]
2022-08-07 16:54:23.991 INFO 55209 --- [ main] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.6.10.Final
2022-08-07 16:54:24.110 INFO 55209 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.2.Final}
2022-08-07 16:54:24.182 INFO 55209 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2022-08-07 16:54:24.286 INFO 55209 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2022-08-07 16:54:24.298 INFO 55209 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.PostgreSQLDialect
2022-08-07 16:54:24.594 INFO 55209 --- [ main] o.h.e.t.j.p.i.JtaPlatformInitiator : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
2022-08-07 16:54:24.602 INFO 55209 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2022-08-07 16:54:24.635 WARN 55209 --- [ main] JpaBaseConfiguration$JpaWebConfiguration : 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
2022-08-07 16:54:24.928 WARN 55209 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Failed to start bean 'webServerStartStop'; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat server
2022-08-07 16:54:24.930 INFO 55209 --- [ main] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2022-08-07 16:54:24.932 INFO 55209 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated...
2022-08-07 16:54:24.938 INFO 55209 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
2022-08-07 16:54:24.943 INFO 55209 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2022-08-07 16:54:24.955 INFO 55209 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-08-07 16:54:24.975 ERROR 55209 --- [ main] o.s.boot.SpringApplication : Application run failed
org.springframework.context.ApplicationContextException: Failed to start bean 'webServerStartStop'; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat server
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:181) ~[spring-context-5.3.22.jar:5.3.22]
at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:54) ~[spring-context-5.3.22.jar:5.3.22]
at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) ~[spring-context-5.3.22.jar:5.3.22]
at java.base/java.lang.Iterable.forEach(Iterable.java:75) ~[na:na]
at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155) ~[spring-context-5.3.22.jar:5.3.22]
at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123) ~[spring-context-5.3.22.jar:5.3.22]
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:935) ~[spring-context-5.3.22.jar:5.3.22]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586) ~[spring-context-5.3.22.jar:5.3.22]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) ~[spring-boot-2.7.2.jar:2.7.2]
at com.nosiaj.nstudycloud.NstudycloudApplicationKt.main(NstudycloudApplication.kt:13) ~[main/:na]
Caused by: org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat server
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:229) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.web.servlet.context.WebServerStartStopLifecycle.start(WebServerStartStopLifecycle.java:43) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:178) ~[spring-context-5.3.22.jar:5.3.22]
... 14 common frames omitted
Caused by: java.lang.IllegalArgumentException: standardService.connector.startFailed
at org.apache.catalina.core.StandardService.addConnector(StandardService.java:238) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.addPreviouslyRemovedConnectors(TomcatWebServer.java:282) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:213) ~[spring-boot-2.7.2.jar:2.7.2]
... 16 common frames omitted
Caused by: org.apache.catalina.LifecycleException: Protocol handler start failed
at org.apache.catalina.connector.Connector.startInternal(Connector.java:1077) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.StandardService.addConnector(StandardService.java:234) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
... 18 common frames omitted
Caused by: java.net.BindException: Die Adresse wird bereits verwendet
at java.base/sun.nio.ch.Net.bind0(Native Method) ~[na:na]
at java.base/sun.nio.ch.Net.bind(Net.java:555) ~[na:na]
at java.base/sun.nio.ch.ServerSocketChannelImpl.netBind(ServerSocketChannelImpl.java:337) ~[na:na]
at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:294) ~[na:na]
at org.apache.tomcat.util.net.NioEndpoint.initServerSocket(NioEndpoint.java:275) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:230) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.tomcat.util.net.AbstractEndpoint.bindWithCleanup(AbstractEndpoint.java:1227) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.tomcat.util.net.AbstractEndpoint.start(AbstractEndpoint.java:1313) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.coyote.AbstractProtocol.start(AbstractProtocol.java:614) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.connector.Connector.startInternal(Connector.java:1074) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
... 20 common frames omitted
Process finished with exit code 1
So why does this Error appear? And how can I solve it ? I don't know what I am doing wrong, if someone could help me, that would be really great !!
Thanks a lot !!

Answer 1

It means another process is running on same port, so you have to kill it.
First, list which app using which that port and get it's pid
lsof -i:8080
Then kill it with
kill <pid>