Maven 打包时类覆盖问题

当要把依赖包打包进 jar 时，自己重写了某些依赖包的类，这时会被依赖包的类覆盖(相当于被还原了)

使用 maven-shade-plugin 打包可以排除掉依赖包中的一些类或文件

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-shade-plugin</artifactId>
    <version>3.2.4</version>
    <executions>
        <execution>
            <phase>package</phase>
            <goals>
                <goal>shade</goal>
            </goals>
            <configuration>
                <transformers>
                    <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                        <!--自己项目的启动类-->
                        <mainClass>org.apache.catalina.startup.Tomcat</mainClass>
                    </transformer>
                </transformers>
                <filters>
                    <filter>
                        <artifact>*:*</artifact>
                        <excludes>
                            <exclude>META-INF/**</exclude>
                            <exclude>META-INF/*.*</exclude>
                            <exclude>META-INF/**/*.*</exclude>
                            <exclude>**/module-info.*</exclude>
                        </excludes>
                    </filter>
                    <filter>
                        <!--这里重写了 tomcat-embed-core 包的 Tomcat 类-->
                        <!--就让 tomcat-embed-core 包的 Tomcat 类在打包时排除，让自己写的不被覆盖-->
                        <artifact>org.apache.tomcat.embed:tomcat-embed-core</artifact>
                        <excludes>
                            <exclude>org/apache/catalina/startup/Tomcat*.*</exclude>
                        </excludes>
                    </filter>
                </filters>
                <shadedArtifactAttached>true</shadedArtifactAttached>
                <!--生成 jar 包的名称后缀-->
                <shadedClassifierName>jar-with-dependencies</shadedClassifierName>
                <!--是否不打包没有用到的类，可能会有问题，可以自己测试精简后是否正常运行-->
                <!--<minimizeJar>true</minimizeJar>-->
            </configuration>
        </execution>
    </executions>
</plugin>

 

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https://www.jianshu.com/p/7a0e20b30401

https://maven.apache.org/plugins/maven-shade-plugin/