什么是胖JAR？ [英] What is a fat JAR?

问题描述

我听说有人说他们创建了一个胖JAR并进行部署。它们实际意味着什么？

I've heard people say that they create a fat JAR and deploy it. What do they actually mean ?

推荐答案

胖罐是jar，它包含来自所有库的类，您的项目在其上取决于，当然还有当前项目的类。

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.

在不同的构建系统中，fat jar的创建方式不同，例如，在Gradle中，将创建它（指令）：

In different build systems fat jar is created differently, for example, in Gradle one would create it with (instruction):

task fatJar(type: Jar) {
    manifest {
        attributes 'Main-Class': 'com.example.Main'
    }
    baseName = project.name + '-all'
    from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
    with jar
}

在Maven这是以这种方式完成的（在设置常规jar之后）：

In Maven it's being done this way (after setting up regular jar):

<pluginrepositories>
    <pluginrepository>
        <id>onejar-maven-plugin.googlecode.com</id>
        <url>http://onejar-maven-plugin.googlecode.com/svn/mavenrepo</url>
    </pluginrepository>
</pluginrepositories>

<!-- ... -->

<plugin>
    <groupid>org.dstovall</groupid>
    <artifactid>onejar-maven-plugin</artifactid>
    <version>1.4.4</version>
    <executions>
        <execution>
            <configuration>
                <onejarversion>0.97</onejarversion>
                <classifier>onejar</classifier>
            </configuration>
            <goals>
                <goal>one-jar</goal>
            </goals>
        </execution>
   </executions>
</plugin>

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