idea+maven+maven-shade-plugin打包可执行jar

idea+maven+maven-shade-plugin打包可执行jar
Maven打包可执行jar包，需要借助 maven-shade-plugin 插件。

添加插件

在pom文件中 节点下增加如下配置：

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-shade-plugin</artifactId>            
    <version>3.2.4</version>
    <configuration>
    <createDependencyReducedPom>false</createDependencyReducedPom>
    </configuration>
    <executions>
        <execution>
            <phase>package</phase>
            <goals>
                <goal>shade</goal>
            </goals>
            <configuration>
                <transformers>
                    <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                    <mainClass>org.example.demo8.Hello</mainClass>
                    </transformer>
            </transformers>
            </configuration>
        </execution>
    </executions>
</plugin>

准备源码

package org.example.demo8;
public class Hello {
    public static void main(String[] args) {
        System.out.println(Hello.sayHello());
    }
    public static String sayHello(){
        return "hello world";
    }
}

编译打包

mvn clean package

执行完毕，在target目录下收获两个jar包

original-demo8-1.0-SNAPSHOT.jar，原始jar包

demo8-1.0-SNAPSHOT.jar，可执行jar包

用压缩软件打开demo8-1.0-SNAPSHOT.jar包，可以在META-INF目录下的MANIFEST.MF文件中看到我们刚才指定的Main-Class

执行

java -jar ./target/demo8-1.0-SNAPSHOT.jar

执行结果如下，打包成功