maven阴影JAR：更改输出位置

Question

我很难使用Maven Shade插件，因为我希望将我的带阴影的jar安装到与父pom相同的文件夹中（而不是本地src/target目录）。

布局:maven_project

guide/
   parent_pom.xml
projA/
   pom.xml
projB/
   pom.xml
   /target
      original-projB-0.0.3.jar
      projB-0.0.3.jar (shaded jar) 

我必须导出项目，为了让其他人更容易运行可执行jar，我想将带阴影的jar重新定位到guide文件夹。

<outputDirectory>/home/name/Desktop/maven_project/guide/</outputDirectory>    

Answer 1

默认情况下，Maven Shade插件替换构建生成的原始jar，并创建一个前缀为original的副本。

可以通过outputdirectory、outputfile和finalname配置项配置替换和重定位。

应用以下配置：

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-jar-plugin</artifactId>
            <version>2.4</version>
            <executions>
                <execution>
                    <id>default-jar</id>
                    <phase />
                </execution>
            </executions>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>2.4.3</version>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>shade</goal>
                    </goals>
                    <configuration>
                        <finalName>${project.artifactId}-${project.version}-something</finalName>
                        <outputDirectory>../guide</outputDirectory>
                    </configuration>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

阴影项目的输出文件的路径。设置此参数时，创建的归档文件既不会替换项目的主工件，也不会附加。因此，此参数会导致参数finalname、shadedArtifactAttached、ShadedClassifierName和CreateDependencyReducedPOM在使用时被忽略。

因此,您可以将上面的配置更改为：

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-jar-plugin</artifactId>
            <version>2.4</version>
            <executions>
                <execution>
                    <id>default-jar</id>
                    <phase />
                </execution>
            </executions>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>2.4.3</version>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>shade</goal>
                    </goals>
                    <configuration>
                        <outputFile>../guide/${project.artifactId}-${project.version}-shaded.jar</outputFile>
                    </configuration>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

并且有着完全相同的行为。

mvn shade:shade

[INFO] --- maven-shade-plugin:2.4.3:shade (default-cli) @ test-addjar ---
[ERROR] The project main artifact does not exist. This could have the following
[ERROR] reasons:
[ERROR] - You have invoked the goal directly from the command line. This is not
[ERROR]   supported. Please add the goal to the default lifecycle via an
[ERROR]   <execution> element in your POM and use "mvn package" to have it run.
[ERROR] - You have bound the goal to a lifecycle phase before "package". Please
[ERROR]   remove this binding from your POM such that the goal will be run in
[ERROR]   the proper phase.
[ERROR] - You removed the configuration of the maven-jar-plugin that produces the main artifact.
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------