如果您正在使用Eclipse，我建议同时下载源代码和第三方库的Javadocs。

右键点击项目和下载两个截图如下。

下载Javadocs意味着通常可以从第三方库中获得方法的上下文帮助，其中包含有用的参数描述等。如果你不太了解图书馆，这是很重要的。在某些情况下，我发现当源代码不可用时，Javadocs是可用的。

配置和运行maven-eclipse插件(例如从命令行mvn eclipse:eclipse)

   <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-eclipse-plugin</artifactId>
                <configuration>
                    <downloadSources>true</downloadSources>
                    <downloadJavadocs>true</downloadJavadocs>
                </configuration>
            </plugin>
        </plugins>
    </build>

在Eclipse中

右键单击pom.xml 选择Run As -> Maven generate-sources 默认情况下，它将在.m2文件夹中生成源代码

Pre-Requisite:

Maven应该使用Eclipse进行配置。

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

您可以在这个相关问题中找到相关信息:获取附加到Eclipse的源jar文件，以获得maven管理的依赖关系 如果你使用eclipse maven插件，那么使用'mvn eclipse:eclipse -DdownloadSources=true'

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