Java Spring Boot application doesn't launch on Docker as a container. Database connection exception | Java Community | Help. Code. Learn. | Page 1

hallow glacier Mar 22, 2023, 2:32 PM

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For unknown reasons my docker container doesn't launch Spring Boot application even if in properties I show path to postgres-container:
spring.datasource.url=jdbc:postgresql://postgres-container/maitinimas02
I built an image docker build -t back-end:1 .
And launched the container: winpty docker run -it --network db-network -p 8080:8080 back-end:1
but I still have an error:

2023-03-22 14:21:40.005 ERROR 7 --- [           main] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Exception during pool initialization.

org.postgresql.util.PSQLException: The connection attempt failed.
        at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:331) ~[postgresql-42.3.5.jar!/:42.3.5]
        at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49) ~[postgresql-42.3.5.jar!/:42.3.5]
//....
Caused by: java.net.UnknownHostException: postgres-container

Do you know how to launch the container?
postgress-container is running on Docker-Desktop with explicitly mapped ports 5432:5432.

ocean zephyrBOT Mar 22, 2023, 2:32 PM

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Hey @hallow glacier! Please use /close or the Close Post button above when you're finished. Please remember to follow the help guidelines. This post will be automatically closed after 300 minutes of inactivity.

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upbeat night Mar 22, 2023, 2:39 PM

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Did you create a common network for these images and make them use it?

hallow glacier Mar 22, 2023, 3:05 PM

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I created db-network using command: docker network create db-network And it was created.

upbeat night Mar 22, 2023, 3:06 PM

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Uhuh. And do the containers use it?

hallow glacier Mar 22, 2023, 3:07 PM

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I haven't used db-network while created postgres-container: docker run -p 5432:5432 --name postgres-container -e POSTGRES_PASSWORD=tommoc0123 -d postgres:alpine3.17

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But I used it to create back-end container: winpty docker run -it --network db-network -p 8080:8080 back-end:1

upbeat night Mar 22, 2023, 3:08 PM

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Okay so I don't have my docker env ready here to verify. But I thought that containers were isolated from each other if not using a common named network

hallow glacier Mar 22, 2023, 3:08 PM

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In the end I'm not sure which containers do use the network

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I'm new here

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Yes containers are isolated. And can connect only through specific network

hallow glacier Mar 22, 2023, 3:44 PM

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Ok I solved current error.

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Though I got a new one. Which is very Spring Boot-ish:

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2023-03-22 15:29:00.286 ERROR 7 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userPasswordResetService': Unsatisfied dependency expressed through fiel
d 'encoder'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'securityConfig': Unsatisfied dependency
 expressed through field 'userDetailsService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userS
ervice': Unsatisfied dependency expressed through field 'encoder'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating
 bean with name 'getPasswordEncoder': Requested bean is currently in creation: Is there an unresolvable circular reference?
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor
.java:659) ~[spring-beans-5.3.20.jar!/:5.3.20]

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Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'securityConfig': Unsatisfied dependency expressed through fie
ld 'userDetailsService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userService': Unsatisfied d
ependency expressed through field 'encoder'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'getPa
sswordEncoder': Requested bean is currently in creation: Is there an unresolvable circular reference?

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The app works perfectly while not in the container.

ocean zephyrBOT Mar 22, 2023, 8:50 PM

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hallow glacier Mar 23, 2023, 2:07 AM

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Solved the problem. If you need to know how them PM me and ask.

ocean zephyrBOT Mar 23, 2023, 2:07 AM

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hallow glacier Solved the problem. If you need to know how them PM me and ask.

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#Java Spring Boot application doesn't launch on Docker as a container. Database connection exception