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

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>

This is the solution :

1. add only plugin in POM.xml

   <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></plugins>

2. One property in pom.xml

   <properties>  <start-class>com.xxx.yyy.MainClass</start-class></properties>

3. Run command

   mvn clean package spring-boot:repackage

4. Now run your jar (it includes all dependencies now) created inside target folder

   java -jar my-service-0.0.1-SNAPSHOT.jar

Alternatively, if you cannot use the spring boot plugin for whatever reason, you can include the following file in your application. It should be called src/main/resources/META-INF/spring.factories:

https://github.com/spring-projects/spring-boot/blob/1.5.x/spring-boot-autoconfigure/src/main/resources/META-INF/spring.factories

This will work for spring boot 1.x and is helpful if you want to use spring managed beans in a REPL.