在IntelliJ IDEA中，您可以在导入时通过打开“自动下载源”选项自动下载工件源:

设置→构建、执行、部署→构建工具→Maven→导入

Maven存储库确实提供了下载jar源代码的简单方法。

我将使用“spring-boot-actuator-autoconfigure”的演示来解释它。

Go to maven repository - https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-actuator-autoconfigure The page lists various versions. Click-on to desired one, let's say, 2.1.6.RELEASE - https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-actuator-autoconfigure/2.1.6.RELEASE The page have link "View All" next to "Files". Click it - https://repo1.maven.org/maven2/org/springframework/boot/spring-boot-actuator-autoconfigure/2.1.6.RELEASE/ The page lists various files including the one for sources - https://repo1.maven.org/maven2/org/springframework/boot/spring-boot-actuator-autoconfigure/2.1.6.RELEASE/spring-boot-actuator-autoconfigure-2.1.6.RELEASE-sources.jar

否则，你总是可以“git克隆”从github的回购，如果它在那里，并获得特定的代码。

正如其他人解释的那样，您可以使用“mvn dependency:sources”命令获取并生成您正在使用的依赖项的sources jar。

注意:有些依赖项没有sources.jar，因为这些依赖项不包含源代码，只包含一个pom文件。例如spring-boot-starter-actuator。 在这个例子中:

初学者pom是一组方便的依赖描述符，可以包含在应用程序中。您可以获得所需的所有Spring和相关技术的一站式商店，而不必寻找示例代码和复制粘贴依赖描述符负载。

参考:Spring引导启动器介绍

NetBeans, Context-Click

在NetBeans 8的maven驱动项目中，只需上下文单击感兴趣的依赖项的jar文件列表项。选择“下载源”。稍等片刻，NetBeans将自动下载并安装源代码(如果可用的话)。

类似地，您可以选择Download Javadoc以在本地安装文档。然后，您可以在编辑器中上下文单击一些代码并选择查看JavaDoc。

IntelliJ idea的maven idea插件允许您指定是否应该解析和下载源代码和java文档

mvn idea:idea -DdownloadSources=true -DdownloadJavadocs=true

Maven Micro-Tip: Get sources and Javadocs When you're using Maven in an IDE you often find the need for your IDE to resolve source code and Javadocs for your library dependencies. There's an easy way to accomplish that goal. mvn dependency:sources mvn dependency:resolve -Dclassifier=javadoc The first command will attempt to download source code for each of the dependencies in your pom file. The second command will attempt to download the Javadocs. Maven is at the mercy of the library packagers here. So some of them won't have source code packaged and many of them won't have Javadocs. In case you have a lot of dependencies it might also be a good idea to use inclusions/exclusions to get specific artifacts, the following command will for example only download the sources for the dependency with a specific artifactId: mvn dependency:sources -DincludeArtifactIds=guava

来源:http://tedwise.com/2010/01/27/maven-micro-tip-get-sources-and-javadocs/

文档:https://maven.apache.org/plugins/maven-dependency-plugin/sources-mojo.html

如果你正在使用eclipse，你也可以打开Preferences > Maven并选择下载Artifact Sources，这将使pom.xml保持完整，并将你的源代码或java文档(如果选中)保存在你的机器位置~/.m2中进行开发