【Maven_bugs】The project main artifact does not exist

哆啦 AI 梦2024-12-30 14:28

背景：我想使用 maven-shade-plugin 打一个 fat jar 时报了标题中的错误，使用的命令是：org.apache.maven.plugins:maven-shade-plugin:shade -pl :shade-project。项目结构如下图，我想把子模块 shade-project 打成一个 fat jar：

执行命令后控制台打印如下：

Bash 复制代码 
xxx@xxxdeMacBook-Air maven-package-demo % mvn org.apache.maven.plugins:maven-shade-plugin:shade -pl :shade-project
[INFO] Scanning for projects...
[INFO] 
[INFO] ---------------------< cn.myphoenix:shade-project >---------------------
[INFO] Building shade-project 1.0-SNAPSHOT
[INFO]   from pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
[WARNING] The artifact mysql:mysql-connector-java:jar:8.0.33 has been relocated to com.mysql:mysql-connector-j:jar:8.0.33: MySQL Connector/J artifacts moved to reverse-DNS compliant Maven 2+ coordinates.
[INFO] 
[INFO] --- shade:3.6.0:shade (default-cli) @ shade-project ---
[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] ------------------------------------------------------------------------
[INFO] Total time:  0.229 s
[INFO] Finished at: 2024-12-24T21:38:23+08:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-shade-plugin:3.6.0:shade (default-cli) on project shade-project: Failed to create shaded artifact, project main artifact does not exist. -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

可以看到控制台也打印了 3 个原因，如下所示：

  • You have invoked the goal directly from the command line. This is not supported. Please add the goal to the default lifecycle via an element in your POM and use "mvn package" to have it run.
  • You have bound the goal to a lifecycle phase before "package". Please remove this binding from your POM such that the goal will be run in the proper phase.
  • You removed the configuration of the maven-jar-plugin that produces the main artifact.

总结来说，maven-shade-plugin 的 shade 插件需要借助 maven-jar-plugin 插件的 jar 目标打的 jar 包。官方还推荐了，将 shade 目标绑定到 package 及 package 以后的阶段，然后直接使用 mvn package 命令运行 shade 插件。

然后，我将 shade 目标绑定到了 package 阶段，pom 如下所示：

XML 复制代码 
<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>3.6.0</version>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>shade</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

执行 mvn package -pl :shade-project，但还有报错如下：

Bash 复制代码 
xxx@xxxdeMacBook-Air maven-package-demo % mvn package -pl :shade-project
[INFO] Scanning for projects...
[INFO] 
[INFO] ---------------------< cn.myphoenix:shade-project >---------------------
[INFO] Building shade-project 1.0-SNAPSHOT
[INFO]   from pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
[WARNING] The artifact mysql:mysql-connector-java:jar:8.0.33 has been relocated to com.mysql:mysql-connector-j:jar:8.0.33: MySQL Connector/J artifacts moved to reverse-DNS compliant Maven 2+ coordinates.
[INFO] 
[INFO] --- resources:3.3.1:resources (default-resources) @ shade-project ---
[INFO] Copying 0 resource from src/main/resources to target/classes
[INFO] 
[INFO] --- compiler:3.13.0:compile (default-compile) @ shade-project ---
[INFO] Recompiling the module because of changed source code.
[INFO] Compiling 1 source file with javac [debug target 8] to target/classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  0.340 s
[INFO] Finished at: 2024-12-24T21:46:59+08:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.13.0:compile (default-compile) on project shade-project: Compilation failure
[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
[ERROR] 
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

报错原因：环境没有提供编译器，可能编译过程运行在 JRE 上，而不是 JDK 上。

解决方案：https://www.cnblogs.com/wxmdevelop/p/18342861

查看 Maven 版本信息，貌似路径有些问题，如下所示，Maven 没有找到 JDK

Bash 复制代码 
xxx@xxxdeMacBook-Air ~ % mvn -v
Apache Maven 3.9.9 (8e8579a9e76f7d015ee5ec7bfcdc97d260186937)
Maven home: /Users/xxx/softwares/developer/apache-maven-3.9.9
Java version: 1.8.0_421, vendor: Oracle Corporation, runtime: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home
Default locale: zh_CN, platform encoding: UTF-8
OS name: "mac os x", version: "15.1", arch: "aarch64", family: "mac"

重新配置 JDK 和 Maven 环境变量：

Bash 复制代码 
JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk-1.8.jdk/Contents/Home
M2_HOME=/Users/xxx/softwares/developer/apache-maven-3.9.9
PATH=$JAVA_HOME/bin:$M2_HOME/bin:$PATH
CLASSPATH=$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar
export JAVA_HOME
export PATH
export CLASSPATH
export M2_HOME

再次查看 Maven 的版本信息，路径正确：

Bash 复制代码 
xxx@xxxdeMacBook-Air ~ % mvn -v
Apache Maven 3.9.9 (8e8579a9e76f7d015ee5ec7bfcdc97d260186937)
Maven home: /Users/xxx/softwares/developer/apache-maven-3.9.9
Java version: 1.8.0_421, vendor: Oracle Corporation, runtime: /Library/Java/JavaVirtualMachines/jdk-1.8.jdk/Contents/Home/jre
Default locale: zh_CN, platform encoding: UTF-8
OS name: "mac os x", version: "15.1", arch: "aarch64", family: "mac"

重新执行 mvn package -pl :shade-project，成功：

Bash 复制代码 
xxx@xxxdeMacBook-Air maven-package-demo % mvn package -pl :shade-project
[INFO] Scanning for projects...
[WARNING] 
[WARNING] Some problems were encountered while building the effective model for cn.myphoenix:shade-project:jar:1.0-SNAPSHOT
[WARNING] 'dependencies.dependency.systemPath' for cn.myphoenix:big-marketing-wheel:jar should use a variable instead of a hard-coded path /Users/xxx/desktop/big-marketing-wheel-1.0-SNAPSHOT.jar @ line 55, column 25
[WARNING] 
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING] 
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING] 
[INFO] 
[INFO] ---------------------< cn.myphoenix:shade-project >---------------------
[INFO] Building shade-project 1.0-SNAPSHOT
[INFO]   from pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
[WARNING] The artifact mysql:mysql-connector-java:jar:8.0.33 has been relocated to com.mysql:mysql-connector-j:jar:8.0.33: MySQL Connector/J artifacts moved to reverse-DNS compliant Maven 2+ coordinates.
[INFO] 
[INFO] --- resources:3.3.1:resources (default-resources) @ shade-project ---
[INFO] Copying 0 resource from src/main/resources to target/classes
[INFO] 
[INFO] --- compiler:3.13.0:compile (default-compile) @ shade-project ---
[INFO] Recompiling the module because of changed source code.
[INFO] Compiling 1 source file with javac [debug target 8] to target/classes
[INFO] 
[INFO] --- resources:3.3.1:testResources (default-testResources) @ shade-project ---
[INFO] skip non existing resourceDirectory /Users/xxx/Code_Workspace/IDEA_Workspace/maven_project/maven-package-demo/shade-project/src/test/resources
[INFO] 
[INFO] --- compiler:3.13.0:testCompile (default-testCompile) @ shade-project ---
[INFO] Nothing to compile - all classes are up to date.
[INFO] 
[INFO] --- surefire:3.2.5:test (default-test) @ shade-project ---
[INFO] No tests to run.
[INFO] 
[INFO] --- jar:3.4.1:jar (default-jar) @ shade-project ---
[INFO] Building jar: /Users/xxx/Code_Workspace/IDEA_Workspace/maven_project/maven-package-demo/shade-project/target/shade-project-1.0-SNAPSHOT.jar
[INFO] 
[INFO] --- shade:3.6.0:shade (default) @ shade-project ---
[INFO] Including org.mybatis:mybatis:jar:3.5.16 in the shaded jar.
[INFO] Including com.mysql:mysql-connector-j:jar:8.0.33 in the shaded jar.
[INFO] Including com.google.protobuf:protobuf-java:jar:3.21.9 in the shaded jar.
[INFO] Dependency-reduced POM written at: /Users/xxx/Code_Workspace/IDEA_Workspace/maven_project/maven-package-demo/shade-project/dependency-reduced-pom.xml
[WARNING] mybatis-3.5.16.jar, mysql-connector-j-8.0.33.jar, protobuf-java-3.21.9.jar, shade-project-1.0-SNAPSHOT.jar define 1 overlapping resource: 
[WARNING]   - META-INF/MANIFEST.MF
[WARNING] maven-shade-plugin has detected that some files are
[WARNING] present in two or more JARs. When this happens, only one
[WARNING] single version of the file is copied to the uber jar.
[WARNING] Usually this is not harmful and you can skip these warnings,
[WARNING] otherwise try to manually exclude artifacts based on
[WARNING] mvn dependency:tree -Ddetail=true and the above output.
[WARNING] See https://maven.apache.org/plugins/maven-shade-plugin/
[INFO] Replacing original artifact with shaded artifact.
[INFO] Replacing /Users/xxx/Code_Workspace/IDEA_Workspace/maven_project/maven-package-demo/shade-project/target/shade-project-1.0-SNAPSHOT.jar with /Users/xxx/Code_Workspace/IDEA_Workspace/maven_project/maven-package-demo/shade-project/target/shade-project-1.0-SNAPSHOT-shaded.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  1.203 s
[INFO] Finished at: 2024-12-24T22:09:13+08:00
[INFO] ------------------------------------------------------------------------
相关推荐
drebander21 小时前
Maven 构建中的安全性与合规性检查
java·maven
drebander21 小时前
Maven 与 Kubernetes 部署：构建和部署到 Kubernetes 环境中
java·kubernetes·maven
丁总学Java1 天前
在IDEA的Maven中（同步所有Maven项目）和（重新加载所有Maven项目）的区别
java·maven·intellij-idea
灬Change1 天前
maven 发布本地jar包到私库
linux·maven·jar
小安同学iter2 天前
使用Maven将Web应用打包并部署到Tomcat服务器运行
java·tomcat·maven
小钊（求职中）2 天前
Java开发实习面试笔试题（含答案）
java·开发语言·spring boot·spring·面试·tomcat·maven
ruleslol2 天前
Maven教程
maven
只吹45°风2 天前
Java-如何将其他地方拉取的jar包导入本地maven环境
java·maven·jar
modi0003 天前
使用IDEA创建Maven项目、Maven坐标，以及导入Maven项目
java·maven·intellij-idea
-优势在我3 天前
android studio 使用maven-publish 插件上传aar到远程maven仓库
android·maven·android studio
热门推荐
01本地部署DeepSeek教程（Mac版本）02如何在WPS和Word/Excel中直接使用DeepSeek功能03DeepSeek本地部署详细指南04太炸裂了！清华大学deepseek从入门到精通使用手册又出第三版了，《普通人如何抓住DeepSeek红利》（无套路，直接下载）05DeepSeek各版本说明与优缺点分析06DeepSeek r1本地安装全指南07本地化部署AI知识库：基于Ollama+DeepSeek+AnythingLLM保姆级教程08DeepSeek R1本地化部署 Ollama + Chatbox 打造最强 AI 工具09在Windows下安装Ollama并体验DeepSeek r1大模型10Page Assist - 本地Deepseek模型 Web UI 的安装和使用