基本功能
maven-shade-plugin提供了两大基本功能：
将依赖的jar包打包到当前jar包（常规打包是不会将所依赖jar包打进来的）；
对依赖的jar包进行重命名（用于类的隔离）；
Goals
maven-shade-plugin 只存在一个goal shade:shade，需要将其绑定到 phase package 上，使用框架如下：
<project>
...
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.1.1</version>
<configuration>
<!-- put your configurations here -->
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
...
</project>然后在当前pom文件所在路径下，执行打包命令：
mvn clean package示例1：将部分jar包添加或排除
<project>
...
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.1.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<artifactSet>
<excludes>
<exclude>jmock:*</exclude>
<exclude>*:xml-apis</exclude>
<exclude>org.apache.maven:lib:tests</exclude>
<exclude>log4j:log4j:jar:</exclude>
</excludes>
<includes>
<include>junit:junit</include>
</includes>
</artifactSet>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
...
</project>说明：
- jar包以groupId:artifactId[[:type]:classifier]的形式表示；
- 1.3版本后插件支持通配符 ‘*’ and ‘?’ ；
示例2：将依赖jar包内部资源添加或排除
<project>
...
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.1.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<filters>
<filter>
<artifact>junit:junit</artifact>
<includes>
<include>junit/framework/**</include>
<include>org/junit/**</include>
</includes>
<excludes>
<exclude>org/junit/experimental/**</exclude>
<exclude>org/junit/runners/**</exclude>
</excludes>
</filter>
<filter>
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
...
</project>示例3：自动将所有不使用的类排除
<project>
...
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.1.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<minimizeJar>true</minimizeJar>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
...
</project>示例4：将依赖的类重命名并打包进来 （隔离方案）
将“org.codehaus.plexus.util”重命名为“org.shaded.plexus.util”，原始jar包中的“org.codehaus.plexus.util.xml.Xpp3Dom”和“org.codehaus.plexus.util.xml.pull”不会被重命名到目的包中；
<project>
...
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.1.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<relocations>
<relocation>
<pattern>org.codehaus.plexus.util</pattern>
<shadedPattern>org.shaded.plexus.util</shadedPattern>
<excludes>
<exclude>org.codehaus.plexus.util.xml.Xpp3Dom</exclude>
<exclude>org.codehaus.plexus.util.xml.pull.*</exclude>
</excludes>
</relocation>
</relocations>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
...
</project>示例5：修改包的后缀名
默认会生成一个Jar包和一个以 “-shaded”为结尾的uber-jar包，可以通过配置来指定uber-jar的后缀名。
<project>
...
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.1.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<shadedArtifactAttached>true</shadedArtifactAttached>
<shadedClassifierName>jackofall</shadedClassifierName> <!-- Any name that makes sense -->
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
...
</project>问题1：Invalid signature file digest for Manifest main attributes
原因：有些jar包生成时，会 使用jarsigner生成文件签名（完成性校验），分为两个文件存放在META-INF目录下：
a signature file, with a .SF extension；
a signature block file, with a .DSA, .RSA, or .EC extension；
解决方案：生成 uber-jar时，将这些排除掉，不再进行完成性校验，如下所示：
<configuration>
<filters>
<filter>
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
</configuration>from：https://blog.csdn.net/yangguosb/article/details/80619481
