But thanks anyway, I’ve gotten a ton of useful information from you blog in the past!! If you put jar files in the layer before your application classes, Docker often only needs to change the very bottom layer and can pick others up from its cache. Copying blindly jars from a location means you're completely by-passing the dependency management. For more details on this topic, please read Create a Fat Jar App with Spring Boot. How can I fix the build issue so that I can start app using java -jar command. Root pom, it inherints spring-boot-starter-parent.. Spring Boot Loader-compatible jar and war archives can include additional index files under the BOOT-INF/ directory. However, if I start spring boot application using maven ./mvnw spring-boot:run -Drun.jvmArguments="-Dspring.profiles.active=qal" I guess, it finds all the dependencies in target folder hence works fine.

But while building (maven clean install) only that jar file’s content is not reflecting and build fails. By default, Spring Boot repackages your JAR into an executable JAR, and it does that by putting all of your classes inside BOOT-INF/classes, and all of the dependent libraries inside BOOT-INF/lib.The consequence of creating this fat JAR is that you can no longer use it as a dependency for other projects. In maven-dependencies it is showing that jar file. I added one local maven dependency with spring boot maven build (same as above).

Note Maven assembly plugin is not good in producing fat/uber jar, it may cause name conflict issue, it is better to use other Maven plugins like : Which means create a Jar together with its dependency Jars into a single executable Jar file.

For more details on this topic, please read Create a Fat Jar App with Spring Boot. Just do not use spring-boot-maven-plugin at all and use JAR packaging. pom.xml. This way the build wouldn't package dependencies into the JAR.

For instance, the fat jar of our Spring Boot application was 72 MB big but contained only 2 MB code. The fat jar is the jar, which contains classes from all the libraries, on which your project depends and, of course, the classes of current project.

What if the fat jar includes a dependency on lib … ! Spring Boot relies on the mechanism of "Autoconfiguration": the run time support that underlies a Spring Boot application is able to create and load objects into the context based on what it finds on the classpath. Incorporate external dependencies for your Spring Boot app with a helping hand from Maven. A classpath.idx file can be provided for both jars and wars, it provides the ordering that jars should be added to the classpath. But those dependencies are copied again and again into each fat jar leading to a waste of space, bandwidth and time. A spring boot application relying on another spring boot application I guess? In this tutorial, we'll explore the differences between starting a Spring Boot web application via the mvn spring-boot:run command and running it after it is compiled into a jar/war package via the java -jar command.. Let's assume here you're already familiar with the configuration of the Spring Boot repackage goal. Expected Spring Boot packaged fat-jar would be build/libs/gs-statemachine-0.1.0.jar. How to provide a Spring Boot "fat JAR" with external dependencies. In this tutorial, we'll explore the differences between starting a Spring Boot web application via the mvn spring-boot:run command and running it after it is compiled into a jar/war package via the java -jar command.. Let's assume here you're already familiar with the configuration of the Spring Boot repackage goal. It's more complicated than it may look like. The layers.idx file can be used only for jars, it allows a jar to be split into logical layers for Docker/OCI image creation. I used it on my project with a dependency on javaee and jersey and I ended up with a jar with multiple entries with the same name… and Java doesn’t like it when running in a webstart application.