SpringBoot+Postgres in Docker: on docker-compose: Failed to initialize JPA EntityManagerFactory: Unable to load class

Question

I have some back-end app written in Java using Spring Boot and Postgres.

The app works flawlessly if I run it locally from Intelliji, but when I compile to jar and run docker build --no-cache -t application.jar . and docker-compose up, the backend crashes. The postgres container seems to be working fine, but the spring boot container fails with the following:

spring_boot_back_end    | 2021-08-12 17:14:09.935  INFO 1 --- [           main] e.e.t.c.SomeApplication           : Starting Application using Java 11.0.12 on 5fa243e643ca with PID 1 (/application.jar started by root in /)
spring_boot_back_end    | 2021-08-12 17:14:09.938  INFO 1 --- [           main] e.e.t.c.SomeApplication           : No active profile set, falling back to default profiles: default
spring_boot_back_end    | 2021-08-12 17:14:10.618  INFO 1 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
spring_boot_back_end    | 2021-08-12 17:14:10.666  INFO 1 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 41 ms. Found 4 JPA repository interfaces.
spring_boot_back_end    | 2021-08-12 17:14:11.134  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
spring_boot_back_end    | 2021-08-12 17:14:11.146  INFO 1 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
spring_boot_back_end    | 2021-08-12 17:14:11.146  INFO 1 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.50]
spring_boot_back_end    | 2021-08-12 17:14:11.194  INFO 1 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
spring_boot_back_end    | 2021-08-12 17:14:11.194  INFO 1 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1213 ms
spring_boot_back_end    | 2021-08-12 17:14:11.304  INFO 1 --- [           main] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [name: default]
spring_boot_back_end    | 2021-08-12 17:14:11.340  INFO 1 --- [           main] org.hibernate.Version                    : HHH000412: Hibernate ORM core version 6.0.0.Alpha9
spring_boot_back_end    | 2021-08-12 17:14:11.461  INFO 1 --- [           main] o.hibernate.annotations.common.Version   : HCANN000001: Hibernate Commons Annotations {5.1.2.Final}
spring_boot_back_end    | 2021-08-12 17:14:11.556  INFO 1 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
spring_boot_back_end    | 2021-08-12 17:14:11.615  INFO 1 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
spring_boot_back_end    | 2021-08-12 17:14:11.630  INFO 1 --- [           main] SQL dialect                              : HHH000400: Using dialect: org.hibernate.dialect.PostgreSQLDialect
spring_boot_back_end    | 2021-08-12 17:14:11.669 ERROR 1 --- [           main] j.LocalContainerEntityManagerFactoryBean : Failed to initialize JPA EntityManagerFactory: Unable to load class [...model.something.Something]
spring_boot_back_end    | 2021-08-12 17:14:11.670  WARN 1 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [...model.something.Something]
spring_boot_back_end    | 2021-08-12 17:14:11.670  INFO 1 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown initiated...
spring_boot_back_end    | 2021-08-12 17:14:11.672  INFO 1 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown completed.
spring_boot_back_end    | 2021-08-12 17:14:11.674  INFO 1 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
spring_boot_back_end    | 2021-08-12 17:14:11.682  INFO 1 --- [           main] ConditionEvaluationReportLoggingListener :
spring_boot_back_end    |
spring_boot_back_end    | Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
spring_boot_back_end    | 2021-08-12 17:14:11.694 ERROR 1 --- [           main] o.s.boot.SpringApplication               : Application run failed
spring_boot_back_end    |
spring_boot_back_end    | org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [...model.something.Something]
spring_boot_back_end    |       at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1786) ~[spring-beans-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:602) ~[spring-beans-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:908) ~[spring-context-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.5.3.jar!/:2.5.3]
spring_boot_back_end    |       at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754) ~[spring-boot-2.5.3.jar!/:2.5.3]
spring_boot_back_end    |       at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) ~[spring-boot-2.5.3.jar!/:2.5.3]
spring_boot_back_end    |       at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) ~[spring-boot-2.5.3.jar!/:2.5.3]
spring_boot_back_end    |       at org.springframework.boot.SpringApplication.run(SpringApplication.java:1343) ~[spring-boot-2.5.3.jar!/:2.5.3]
spring_boot_back_end    |       at org.springframework.boot.SpringApplication.run(SpringApplication.java:1332) ~[spring-boot-2.5.3.jar!/:2.5.3]
spring_boot_back_end    |       at ...SomeApplication.main(SomeApplication.java:10) ~[classes!/:na]
spring_boot_back_end    |       at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
spring_boot_back_end    |       at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
spring_boot_back_end    |       at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
spring_boot_back_end    |       at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
spring_boot_back_end    |       at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) ~[charity-sale.jar:na]
spring_boot_back_end    |       at org.springframework.boot.loader.Launcher.launch(Launcher.java:108) ~[charity-sale.jar:na]
spring_boot_back_end    |       at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) ~[charity-sale.jar:na]
spring_boot_back_end    |       at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88) ~[charity-sale.jar:na]
spring_boot_back_end    | Caused by: org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [...model.something.Something]
spring_boot_back_end    |       at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:136) ~[hibernate-core-6.0.0.Alpha9.jar!/:6.0.0.Alpha9]
spring_boot_back_end    |       at org.hibernate.boot.model.source.internal.annotations.AnnotationMetadataSourceProcessorImpl.<init>(AnnotationMetadataSourceProcessorImpl.java:101) ~[hibernate-core-6.0.0.Alpha9.jar!/:6.0.0.Alpha9]
spring_boot_back_end    |       at org.hibernate.boot.model.process.spi.MetadataBuildingProcess$1.<init>(MetadataBuildingProcess.java:163) ~[hibernate-core-6.0.0.Alpha9.jar!/:6.0.0.Alpha9]
spring_boot_back_end    |       at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:157) ~[hibernate-core-6.0.0.Alpha9.jar!/:6.0.0.Alpha9]
spring_boot_back_end    |       at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1345) ~[hibernate-core-6.0.0.Alpha9.jar!/:6.0.0.Alpha9]
spring_boot_back_end    |       at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1416) ~[hibernate-core-6.0.0.Alpha9.jar!/:6.0.0.Alpha9]
spring_boot_back_end    |       at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1845) ~[spring-beans-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1782) ~[spring-beans-5.3.9.jar!/:5.3.9]
spring_boot_back_end    |       ... 24 common frames omitted
spring_boot_back_end    | Caused by: java.lang.NoClassDefFoundError: org/springframework/boot/configurationprocessor/json/JSONException
spring_boot_back_end    |       at java.base/java.lang.Class.forName0(Native Method) ~[na:na]
spring_boot_back_end    |       at java.base/java.lang.Class.forName(Class.java:398) ~[na:na]
spring_boot_back_end    |       at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:130) ~[hibernate-core-6.0.0.Alpha9.jar!/:6.0.0.Alpha9]
spring_boot_back_end    |       ... 36 common frames omitted
spring_boot_back_end    | Caused by: java.lang.ClassNotFoundException: org.springframework.boot.configurationprocessor.json.JSONException
spring_boot_back_end    |       at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:471) ~[na:na]
spring_boot_back_end    |       at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589) ~[na:na]
spring_boot_back_end    |       at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:151) ~[charity-sale.jar:na]
spring_boot_back_end    |       at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522) ~[na:na]
spring_boot_back_end    |       ... 39 common frames omitted
spring_boot_back_end    |
spring_boot_back_end exited with code 1

My Dockerfile

FROM openjdk:11
COPY ./build/libs/application.jar application.jar
ENTRYPOINT ["java", "-jar", "application.jar"]
EXPOSE 8080

My docker-compose.yml

version: "3"
services:
  spring_boot_back_end:
    build: .
    container_name: spring_boot_back_end
    environment:
      SPRING_DATASOURCE_URL: jdbc:postgresql://postgres_db:5432/postgres
    ports:
      - "8080:8080"
    restart: "no"
    depends_on:
      - postgres_db
  postgres_db:
    image: postgres
    container_name: postgres_db
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=password
      - POSTGRES_DB=postgres
      - PGDATA=/var/lib/postgresql/data/pgdata
    ports:
      - "5432:5432"
    volumes:
      - pgdata:/var/lib/postgresql/data
    restart: "no"
volumes:
  pgdata:

My build.gradle

plugins {
    id 'org.springframework.boot' version '2.5.3'
    id 'io.spring.dependency-management' version '1.0.11.RELEASE'
    id 'java'
}

group = 'some.group'
version = 'v0.1'
sourceCompatibility = '11'

bootJar {
    archiveFileName = 'application.jar'
}

configurations {
    compileOnly {
        extendsFrom annotationProcessor
    }
}

repositories {
    mavenCentral()
}

dependencies {
    annotationProcessor 'org.projectlombok:lombok'
    annotationProcessor group: 'org.springframework.boot', name: 'spring-boot-configuration-processor', version: '2.5.3'
    developmentOnly 'org.springframework.boot:spring-boot-devtools'
    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    implementation 'org.springframework.session:spring-session-core'
    implementation 'org.springframework.boot:spring-boot-starter-validation'
    implementation group: 'io.springfox', name: 'springfox-boot-starter', version: '3.0.0'
    implementation 'org.hibernate.orm:hibernate-core:6.0.0.Alpha9'
    implementation 'org.hibernate.javax.persistence:hibernate-jpa-2.1-api:1.0.2.Final'
    compileOnly 'org.projectlombok:lombok'
    runtimeOnly 'org.postgresql:postgresql'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
}

test {
    useJUnitPlatform()
}

My application.properties

spring.datasource.url=jdbc:postgresql://localhost:5432/postgres
spring.datasource.username=postgres
spring.datasource.password=password
#spring.datasource.driverClassName=org.postgresql.Driver
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQLDialect
spring.jpa.hibernate.ddl-auto=create-drop
spring.jpa.show-sql=false
app.api.swagger.enable=true
spring.main.banner-mode=off

If someone smart could shed some light on why this happens that'd be really cool because I've been stuck on this issue for god knows how long.

Does your application jar file contain the missing class? Unable to load class [...model.something.Something] — Anders Lindgren
– Anders Lindgren, Commented Aug 12, 2021 at 18:29
It had the class alright, but it turned out that the whole jar was somewhat corrupted. I spent like 4 hours, then decided to post it here only to discover jar corruption 5 minutes later. — curiousMinded
– curiousMinded, Commented Aug 12, 2021 at 19:01

curiousMinded · Accepted Answer · 2021-08-13 04:51:24Z

1

It turned out that one of the annotation processors' that my JAR depended upon, namely

annotationProcessor group: 'org.springframework.boot', name: 'spring-boot-configuration-processor', version: '2.5.3'

didn't reach the JAR due to a missing implementation statement.

I fixed it by adding

implementation 'org.springframework.boot:spring-boot-configuration-processor:2.5.3';

as a dependency to my bootJar gradle task.

answered Aug 13, 2021 at 4:51

curiousMinded

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