如果引入的依赖库没有源码，Ideal会使用反编译插件对.class文件反编译

要手动查找类，比如：反编译后的文件可以看接口，不能看实现

如果选择Choose Sources时选中了jar包，可能会提示

IDEA cannot determine what kind of files the chosen items contain. Do you want to attach them as 'Sources'?

如果依赖库有源码，会在maven库同路径下，有**source.jar文件，上面Choose Sources选中的也是source包，而不是依赖包

源码打包的方法，pom文件中添加

<build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-archetype-plugin</artifactId>
                <version>3.2.0</version>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-source-plugin</artifactId>
                <version>2.2</version>
                <executions>
                    <execution>
                        <id>attach-sources</id>
                        <phase>verify</phase>
                        <goals>
                            <goal>jar-no-fork</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>