<executions > FatJar 又称作 uber-Jar,是包含所有依赖的 Jar 包。Jar 包中嵌入了除 java 虚拟机以外的所有依赖。我们知道 Java 的依赖分为两种, 零散的 .class 文件和把多个 .class 文件以 zip 格式打包而成 jar 文件。FatJar 是一个 all-in-one Jar 包。FatJar 技术可以让那些用于最终发布的 Jar 便于部署和运行。 The Fat JAR will be named like this: The part my-project-name of the above Fat JAR file name comes from the finalName </execution > <execution > As in this example we are using to … </executions > <configuration > </goals > Clean-up 2) Remove the spring-boot-maven-plugin if you are using Spring Boot. Run a Deployment-Specific Configuration. command to startup the microservice. For suppose, if a jar file contains 5 packages, but we are using only one package, then instead of excluding 9 packages, include 1 package. Again, this is much shorter, easier, and it makes your Dockerfile independent of what external <groupId >org.apache.maven.plugins </groupId > You can read more about the Maven Assembly Plugin in the official </plugin > <groupId >org.springframework.boot </groupId > This article will concentrate on creating a “fat jar” out of a Spring Boot application – basically to create a single artifact that is easy to deploy and run.. This makes execution much easier, because <execution > </relocations > </goals > </relocation > brief introduction. <phase >package </phase > <excludes > <execution > <phase >package </phase > Fat JARs are handy when you need to build an executable JAR file, e.g. <relocations > <goals > maven-assembly-plugin 打包可执行jar(fat jar)和配置文件与jar同时打包部署 . maven fat-jar one-jar In diesem Lernprogramm zeigen wir Ihnen, wie Sie das One-JAR-Plugin mit dem Maven Build-Tool verwenden, um eine einzelne Jar zusammen mit ihren Abhängigkeits-Jars in einer einzigen ausführbaren Jar-Datei zu erstellen, der sogenannten Fat Jar. <id >make-assembly </id > I have a Scala project that I build into a Fat JAR. Maven provides other plugins using which we can generate the jar with all its dependencies which is usually called Maven FatJar, which is used as an executable Jar file. In this Maven Fat JAR Tutorial I will show you how to create a Fat JAR with Maven. <goals > Spring Boot Maven Plugin. <goals > Create a Java project from the Maven quick start template. FatJar is a single JAR file that contains all the compiled Java classes from your project, and all compiled Java classes from all JAR files your project depends on. You can read more about Maven commands in my Maven Commands tutorial. In this tutorial, we will show you how to use Maven build tool, One-JAR plugin to create a single Jar together with its dependency Jars into a single executable Jar file, so called fat Jar. </plugin >, my-project-name-jar-with-dependencies.jar, <build > Today I needed to add some Java classes to the project but now my Maven build is failing. dependencies (JAR files) your application uses. Tools used : Maven 3.1.1; JDK 1.7; Joda-time 2.5; 1. Hence the name maven-assembly-plugin. </archive > 在这篇博客里面我们将详细地讲解如何利用maven来创造一个fat jar。可能大家对于fat jar的概念还不是很熟悉,没关系,在开始进一步的讲解之前我会跟你说明fat jar是什么的。另外本文的环境是 123Maven 3.3.9JDK 1.8Joda-Time 2.5 大家根据相应的情况自己创建一个Maven项目。 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 : Maven shade plugin solve this by using technique like class relocating. JavaCodeStuffs is one of the website for Java,Linux,Amazon Web Services, DevOps, and related technical articles. Add dependency of third party jar. You need to add this plugin in your pom.xml as given below. Maven can build a Fat JAR from your Java project. There is no need to create a fat jar anymore. <exclude >org.sample.plexus.util.xml.pull. Example Create a simple project. He loves Open source technologies and writing on JavaCodeStuffs has become his passion. toocarrie 2017-01-15 21:53:12 9567 收藏. </configuration > <mainClass >org.sample.Application </mainClass > <configuration > <executions > Maven Assembly Plugin Documentation . Viewed: 99,776 | +133 pv/w In this tutorial, we will show you how to use Maven build tool, One-JAR plugin to create a single Jar together with its dependency Jars into a single executable Jar file, so called fat Jar. Maven plugin should be executed during. XML element included in the top of the build XML element in the example shown earlier in But … a microservice executable. Fat JARs are also useful if you are packaging your application inside a Docker container. during the package phase. <artifactId >maven-shade-plugin </artifactId > Jib allows configuring the JVM flags and program arguments in the pom.xml. <goals > </descriptorRefs > this tutorial. </plugin >. Maven build phase and goal this In this article, we have seen  How to Build a fat jar using Maven. </executions > <executions > Let’s see what’s the difference between the two. Instead of having to add each JAR file your application depends on to the Docker container, you only have to add the Fat JAR of our application. <artifactId >spring-boot-maven-plugin </artifactId > Maven one-jar plugin, add the dependency jar file directly into project jar, and loads it with custom class loader. compiled classes, generated JavaDocs etc.). Create a simple Java project. <goal >shade </goal > <shadedPattern >org.shaded.sample.plexus.util </shadedPattern > In the previous article, we introduced the fat jar / war package of spring boot. Our tutorials are regularly updated, error-free, and complete. Maven - 太いJarファイルを作成する - 1つのJARの例 fatのJarファイルを作成する - Maven Assembly Plugin Ant - ファットjarファイルを作成する Mavenプラグインの目標とパラメータを表示する方法 Mavenでマニフェストファイルを作成する方法 MavenとJUnitの例 All jar / war packages can be run using java jar command, and Maven also provides MVN spring boot: run command to run applications. package your microservice and all of its dependencies into a single JAR file. These Fat Jars are mostly useful to build executable jar file, for suppose, if we are developing a microservice, if we don't create fat jar file, we need to all its dependencies in one folder, add this folder to the classpath, and start the microservice, for each time we need to do these steps in manually, but if we generate the fat jar as it includes all its dependencies, not needed to add to the classpath, we can directly run the command to start the microservices. A Fat JAR is a single you don't have to list all the JAR files your microservice depends on, on the classpath. A Fat JAR is a single JAR file that contains all the compiled Java classes from your project, and all compiled Java classes from all JAR files your project depends on (see Maven Dependencies ). Now when you run the maven build using simple command mvn clean install, it will generate the fat jar for your project consisting all compiled application code as well as all its dependencies – packaged inside one big jar file. project's POM file. <version > Your Version Here </version > <configuration > </goals > The resultant jar is also called 'fat jar'. </excludes > mvn clean install Demo Building a fat jar using Maven . JAR file that contains all the compiled Java classes from your project, and all compiled Java classes from </executions > Jakob Jenkov application. </plugins > Here is a full Maven POM file with a Fat JAR configuration, just to show you how such a POM file can look. <configuration > </plugin >, <plugin > </execution > </execution > <artifactId >maven-assembly-plugin </artifactId > com.logicbig.example maven-assembly-plugin-example 1.0-SNAPSHOT Import the project into your IDE. MavenShadeExample-uber.jar: This is fat/uber jar … maven-assembly-plugin in your POM file's plugin section. This plugin also supports, if some of the packages are not using in the application, we don’t need in the final fat jar, we can exclude those package in the exclude section, which will improve the class loading performance. is another term for a Fat JAR. </plugin >, <plugin > Last update: 2019-09-01. JavaCodeStuffs was founded by Bala K to share his experience and learnings with the Java and related Technologies. <mainClass >${start-class} </mainClass > The Maven command to make Maven build the Fat JAR for your project is: When you execute Maven package phase with the maven-assembly-plugin configuration shown Here is an example <executions > The Maven command to make Maven build the Fat JAR for your project is: After configuring the shade plugin in your build the command mvn package will create one single jar with all dependencies merged into it. <goal >one-jar </goal > </manifest > For spring boot application use just following plugin. Maven provides other plugins using which we can generate the jar with all its dependencies which is usually called Maven FatJar, which is used as an executable Jar file. * </exclude > Instead of having to An alternative is to use the maven shade plugin to build an uber-jar. as an assembly. <goal >repackage </goal > You can use the onejar-maven-plugin for packaging. When you run the package goal in project’s root directory, you will get two generated jar files i.e. <goal >shade </goal > <goals > other build products (e.g. Maven can build a Fat JAR from your Java project. <executions > </executions > You configure Maven to build a Fat JAR from your project by including the snippet from a POM file showing an example of a maven-assembly-plugin configuration: The configuration XML element inside the maven-assembly-plugin configuration contains <groupId >org.apache.maven.plugins </groupId > Luckily Maven provides a plugin named Apache Maven Shade Plugin for creating a distributable jar with all the dependencies. <execution > The maven-assembly-plugin should always be executed The value jar-with-dependencies tells Maven to build a JAR file with dependencies which That simplifies the Step 2 – Run the maven build. <plugin > <plugin > </execution > <version >3.2.4 </version > earlier, Maven will output a Fat JAR in the target directory, into which Maven outputs all of its Maven provides other plugins using which we can generate the jar with all its dependencies which is usually called Maven FatJar, which is used as an executable Jar file. FatJar is a single JAR file that contains all the compiled Java classes from your project, and all compiled Java classes from all JAR files your project depends on. add each JAR file your application depends on to the Docker container, you only have to add the Fat JAR of our <fork >true </fork > <execution > and one extra pom.xml file named with dependency-reduced-pom.xml. </build >, <plugin > <version >1.4.4 </version > 分类专栏: java 文章标签: java maven assembly. </execution > </goals > Comparison of running applications with Maven and fat jar / War. In the relocation configuration, we can move the package to another package, by providing the shadedPattern. Such a jar is know as a fat jar (also called uber jar) since it is substantially larger than the original. Maven Shade Plugin Structure Run Maven Package Goal > mvn package. Maven Shade Plugin works by modifying the maven package task. Fat JARs are also handy if you need to package your application inside a Docker container. Maven refers to an output product that it builds </configuration > The executions XML element tells Maven which It supports, if some of the packages are not using in the application, we don't need in the final fat jar, we can exclude those package in the exclude section, which will improve the class loading performance. <archive > <descriptorRef >jar-with-dependencies </descriptorRef > </configuration > <version >3.2.0 </version > <phase >package </phase > <manifest > <!-- put your configurations here -- > FatJar is a single JAR file that contains all the compiled Java classes from your project, and all compiled Java classes from all JAR files your project depends on. Read More: Create fat jar using maven shade plugin. <pattern >org.sample.plexus.util </pattern > You can <descriptorRefs > <relocation > the descriptorRef which tells Maven what type of assembly this configuration should build. </executions > all JAR files your project depends on (see Maven Dependencies). My project structure looks (roughly) like this: . <artifactId >onejar-maven-plugin </artifactId > <groupId >org.apache.maven.plugins </groupId > </goals > Create a project using maven-archetype-quickstart with following parameters. <groupId >com.jolira </groupId > </configuration > <artifactId >maven-shade-plugin </artifactId > <goal >single </goal > 最后发布:2017-01-15 21:53:12 首次发布:2017-01-15 21:53:12. <plugins > There are different way to generate the Fat JHar file using maven. To get Maven to build a Fat JAR from your project you must include a Fat JAR build configuration in your Basically, it assembles your project and its dependencies in as one jar, including not just your project jar file, but also all external dependencies as a "jar of jars", e.g.

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