This will be maintained by plugin contributers. This is plugin and your build.gradle much cleaner. 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. Focus on the new OAuth2 stack in Spring Security 5. Thank you so much. And the Gradle commands : #Run the main class gradle run #Create the jars files (including the JavaFX jars) in the "build/libs" folder gradle createJar #Run the jar file cd build/libs java --module-path "." In this quick article, we'll cover creating a “fat jar” in Gradle. $ jar tf lib/build/libs/lib.jar META-INF/ META-INF/MANIFEST.MF lib/ lib/Library.class You should see the required manifest file — MANIFEST.MF — and the compiled Library class. A single Java file to print out the current date time, and logs the message with logback. is providing Java and Spring tutorials and code snippets since 2008. apply plugin: 'java' apply plugin: 'eclipse' version = '1.0' sourceCompatibility = 1.7 targetCompatibility = 1.7 //create a single Jar with all dependencies task fatJar (type: Jar) { manifest { attributes 'Implementation-Title': 'Gradle Jar File Example', 'Implementation-Version': version, 'Main … In simple projects, it's enough to override the default jar task or create a new one. The high level overview of all the articles on the site. We need two things to make it work: Let's add few modifications to the Gradle task: If we want to leave the original jar task as it is, we can create a separate one which will do the same job. it : zipTree(it) } }, shadowJar { configurations = [project.configurations.compile] classifier = null baseName = ‘MyNewJARFileName’ version = null }. This is created automatically once the java plugin is applied. How to make a Java exe file or executable JAR file, How to Java applet access files inside applet jar, Gradle - Spring 4 MVC Hello World Example, Gradle – Spring 4 MVC Hello World Example - Anno, Yes, with this and distZip. 2. jar任务 1). In case the executable jar/war file is not generated run the below gradle task manually. When I see it in a Google search I think “ah, that’s good, I trust this guy” 😉. I spent ages trying to figure out why it wasn’t working and eventually I realised I was supposed to do “gradle fatJar” not “gradle build” – it does say it in the tutorial but perhaps like many others I am often in too much of a hurry for my own good. Thank you for the tip. java.lang.StackOverflowError (no error message), mkyong, your example only works in some cases. In this tutorial, we presented a few different ways of creating fat jars in Gradle. Thanks. But thanks anyway, I’ve gotten a ton of useful information from you blog in the past!!! Make sure to add this exclude line in the file! exclude ‘META-INF/*.RSA’, ‘META-INF/*.SF’,’META-INF/*.DSA’, All of this happens without any additional configuration in the build script because Gradle’s java-library plugin assumes your project sources are arranged in a conventional project layout . it : zipTree(it) }, apply plugin: ‘java’ apply plugin: ‘application’, sourceCompatibility = 1.8 targetCompatibility = 1.8, apply plugin: ‘com.github.johnrengelman.shadow’, shadowJar { configurations = [project.configurations.compile] classifier = null baseName = ‘MyTesteJARFilenameHere’ version = null }, buildscript { repositories { jcenter() } dependencies { classpath ‘com.github.jengelman.gradle.plugins:shadow:2.0.2’ } }, main = “” classpath = sourceSets.main.runtimeClasspath, args System.getProperty(“exec.args”, “”).split() }, sourceSets { main { java { srcDirs = [‘src/main/java’] } resources { srcDirs = [‘src/main/resources’] } } test { java { srcDirs = [‘src/test/java’] } resources { srcDirs = [‘src/test/resources’] } } }, dependencies { testCompile group: ‘junit’, name: ‘junit’, version: ‘4.12’ }. We can overwrite this behavior by adding a few lines of code. Yes, but it isn’t a jar. From no experience to actually building stuff​. I get class not found error if my main class is in test folder, works fine if main class is in src/main/java. I get “no main manifest attribute, in gradle-create-single-jar-all-1.0.jar” with the uploaded example. $./gradlew bootJar Similarly, bootWar generates an executable war file and gets created once the war plugin is applied. This distribute only runtime deps, not compile and test. I’ve seen examples where that show including one of many dependencies, but not several of many (but not all) dependencies. Since we just need to use a assembly or onejar plugin. build.gradle. For people that are adding signed third part jars. Doesn’t work. In this quick article, we'll cover creating a “fat jar” in Gradle. We will look at Java projects in detail in this chapter, but most of the topics apply to other supported JVM languages as well, such as Kotlin, Groovy and Scala.If you don’t have much experience with building JVM-based projects with Gradle, take a look at the Java samples for step-by-step instructions on how to build various types of basic Java projects. The following code will add a new task called customFatJar: We can also use existing Gradle plugins in order to build a fat jar. Is there a way to store all the dependencies in one folder in jar, e.g. You always give just enough to force us to use our heads to figure out the rest. Create following project folder structure : By default, Gradle is using the standard Maven project structure. The guides on building REST APIs with Spring. The Jar is created under the $project/build/libs/ folder. Let's start with a simple build.gradle file for a Java project with two dependencies: Let's start with modifying the jar task from the Java Gradle plugin. The bootJar task is responsible for creating the executable jar file. But as the project grows we highly recommend to use plugins, because they already have solved more difficult problems like conflicts with external META-INF files. After hours of google searching, you were the saving grace! jar { manifest { attributes "Main-Class": application.mainClassName }, from { // filters only existing and non-empty dirs sourceSets.main.runtimeClasspath .filter { (it.isDirectory() && it.listFiles().length > 0) || it.isFile() } .collect { it.isDirectory() ? THE unique Spring Security education if you’re working with Java today. I know a jar file is just a zip file… but the distZip task creates a zip file without a manifest and other jar related things. In this example we'll use the Shadow plugin: Once we apply the Shadow plugin, the shadowJar task will be ready to use. As always, the full implementation of this tutorial can be found over on GitHub. Source code in is licensed under the MIT License, read this Code License. By default, this task produces jars without any dependencies. This! We overrode the default jar task, created a separated task and used the shadow plugin. A build.gradle sample to create a Jar file along with its logback dependencies. Compile configuration is deprecated for long now, kindly update: from { configurations.runtimeClasspath.collect { it.isDirectory() ? This seems to be way to complicated as compared to maven. --module "Project.main/main.Main". /libs ? I think this is much better: just add this lines to build.gradle: apply plugin: ‘application’ mainClassName = “com.mkyong.DateUtils”. The canonical reference for building a production grade API with Spring. All published articles are simple and easy to understand and well tested in our development environment. So much cleaner! Basically, a fat jar (also known as uber-jar) is a self-sufficient archive which contains both classes and dependencies needed to run an application. 打包成一个Jar 执行命令gradle build或者./gradlew build,可在build/libs查看生成的jar包 2). A build.gradle sample to create a Jar file along with its logback dependencies. Thanks for the short tutorial. 3. Any suggestions. So, it’s not the same. In this tutorial, we will show you how to use Gradle build tool to create a single Jar file with dependencies. Which approach is recommended? The settings.gradle file : = 'Project'. For me at first it didn’t work. Thank you! Basically, a fat jar (also known as uber-jar) is a self-sufficient archive which contains both classes and dependencies needed to run an application. The answer is – it depends. $ jar tvf build/libs/gs-gradle-0.1.0.jar 0 Fri May 30 16:02:32 CDT 2014 META-INF/ 25 Fri May 30 16:02:32 CDT 2014 META-INF/MANIFEST.MF 0 Fri May 30 16:02:32 CDT 2014 hello/ 369 Fri May 30 16:02:32 CDT 2014 hello/Greeter.class 988 Fri May 30 16:02:32 CDT 2014 hello/HelloWorld.class It’s better, because: 1. What if you have a LOT of dependencies, but only what to include certain ones, and NOT all of them?