SpringBoot - making jar files - No auto configuration classes found in META-INF/spring.factories

Question

Everything was working fine when starting my app using IntelliJ. But when I made a fat jar and executed it with

java -jar myapp.jar 

I got this:

16:37:44.194 [main] ERROR org.springframework.boot.SpringApplication - Application startup failed org.springframework.beans.factory.BeanDefinitionStoreException: Failed to process import candidates for configuration class [pl.mypackage.Main]; nested exception is java.lang.IllegalArgumentException: No auto configuration classes found in META-INF/spring.factories. If you are using a custom packaging, make sure that file is correct.         at org.springframework.context.annotation.ConfigurationClassParser.processDeferredImportSelectors(ConfigurationClassParser.java:489)         at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:191)         at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:321)         at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:243)         at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:273)         at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:98)         at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:681)         at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:523)         at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)         at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759)         at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369)         at org.springframework.boot.SpringApplication.run(SpringApplication.java:313)         at org.springframework.boot.SpringApplication.run(SpringApplication.java:1185)         at org.springframework.boot.SpringApplication.run(SpringApplication.java:1174)         at pl.mypackage.Main.main(Main.java:39) Caused by: java.lang.IllegalArgumentException: No auto configuration classes found in META-INF/spring.factories. If you are using a custom packaging, make sure that file is correct.         at org.springframework.util.Assert.notEmpty(Assert.java:276)         at org.springframework.boot.autoconfigure.EnableAutoConfigurationImportSelector.getCandidateConfigurations(EnableAutoConfigurationImportSelector.java:145)         at org.springframework.boot.autoconfigure.EnableAutoConfigurationImportSelector.selectImports(EnableAutoConfigurationImportSelector.java:84)         at org.springframework.context.annotation.ConfigurationClassParser.processDeferredImportSelectors(ConfigurationClassParser.java:481)         ... 14 common frames omitted org.springframework.beans.factory.BeanDefinitionStoreException: Failed to process import candidates for configuration class [pl.mypackage.Main]; nested exception is java.lang.IllegalArgumentException: No auto configuration classes found in META-INF/spring.factories. If you are using a custom packaging, make sure that file is correct.         at org.springframework.context.annotation.ConfigurationClassParser.processDeferredImportSelectors(ConfigurationClassParser.java:489)         at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:191)         at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:321)         at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:243)         at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:273)         at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:98)         at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:681)         at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:523)         at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)         at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759)         at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369)         at org.springframework.boot.SpringApplication.run(SpringApplication.java:313)         at org.springframework.boot.SpringApplication.run(SpringApplication.java:1185)         at org.springframework.boot.SpringApplication.run(SpringApplication.java:1174)         at pl.mypackage.Main.main(Main.java:39) Caused by: java.lang.IllegalArgumentException: No auto configuration classes found in META-INF/spring.factories. If you are using a custom packaging, make sure that file is correct.         at org.springframework.util.Assert.notEmpty(Assert.java:276)         at org.springframework.boot.autoconfigure.EnableAutoConfigurationImportSelector.getCandidateConfigurations(EnableAutoConfigurationImportSelector.java:145)         at org.springframework.boot.autoconfigure.EnableAutoConfigurationImportSelector.selectImports(EnableAutoConfigurationImportSelector.java:84)         at org.springframework.context.annotation.ConfigurationClassParser.processDeferredImportSelectors(ConfigurationClassParser.java:481)         ... 14 more 

It looks like it doesn't found auto configuration classes in META-INF/spring.factories. How to add it, and what should be the content of this file?

Answer 1

I had the same problem and just solved it.

At first, I was generating the fat jar with the maven-assembly-plugin, which created a file called mavenproject1-0.0.1-SNAPSHOT-jar-with-dependencies.jar. This file gave the same problem as you mentioned when I tried running it.

I think that because it's a Spring Boot application, you need to use their plug-in. I changed my packaging to the spring-boot-maven-plugin and it generates two files: mavenproject1-0.0.1-SNAPSHOT.jar and mavenproject1-0.0.1-SNAPSHOT.jar.original. Just try java -jar target/mavenproject1-0.0.1-SNAPSHOT.jar, and it will hopefully work. :-)

For reference, here is my pom.xml:

<?xml version="1.0" encoding="UTF-8"?> <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">     <modelVersion>4.0.0</modelVersion>     <groupId>com.company</groupId>     <artifactId>mavenproject1</artifactId>     <version>0.0.1-SNAPSHOT</version>     <packaging>jar</packaging>     <parent>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-starter-parent</artifactId>         <version>1.4.0.RELEASE</version>         <relativePath/>         <!-- lookup parent from repository -->     </parent>     <properties>         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>         <maven.compiler.source>1.8</maven.compiler.source>         <maven.compiler.target>1.8</maven.compiler.target>     </properties>     <dependencies>       <dependency>             <groupId>org.springframework.boot</groupId>             <artifactId>spring-boot-starter</artifactId>         </dependency>         <dependency>             <groupId>org.springframework.boot</groupId>             <artifactId>spring-boot-starter-test</artifactId>             <scope>test</scope>         </dependency>         <dependency>             <groupId>org.springframework.boot</groupId>             <artifactId>spring-boot-starter-web</artifactId>         </dependency>         <dependency>             <groupId>org.springframework.boot</groupId>             <artifactId>spring-boot-configuration-processor</artifactId>             <optional>true</optional>         </dependency>         <dependency>             <groupId>com.company.common</groupId>             <artifactId>common-files</artifactId>             <version>0.0.1-SNAPSHOT</version>         </dependency>     </dependencies>      <build>         <plugins>             <plugin>                 <groupId>org.springframework.boot</groupId>                 <artifactId>spring-boot-maven-plugin</artifactId>                 <configuration>                     <fork>true</fork>                     <mainClass>${start-class}</mainClass>                 </configuration>                   <executions>                     <execution>                       <goals>                         <goal>repackage</goal>                       </goals>                     </execution>                 </executions>             </plugin>             <plugin>               <artifactId>maven-assembly-plugin</artifactId>               <version>2.2-beta-5</version>               <configuration>                 <archive>                   <manifest>                     <addClasspath>true</addClasspath>                     <mainClass>com.company.mavenproject1.MainClass</mainClass>                   </manifest>                 </archive>                 <descriptorRefs>                   <descriptorRef>jar-with-dependencies</descriptorRef>                 </descriptorRefs>               </configuration>               <executions>                 <execution>                   <id>assemble-all</id>                   <phase>package</phase>                   <goals>                     <goal>single</goal>                   </goals>                 </execution>               </executions>             </plugin>         </plugins>     </build> </project>