java - 启动 maven 文件 - 无法运行

Question

我正在尝试让 Maven 启动并运行，并且我完成了大部分事情(在帮助下)。目前我可以使用“运行”按钮，但无法运行简单的程序本身。我收到以下消息:

[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  0.057 s
[INFO] Finished at: 2020-04-06T11:33:42+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] No goals have been specified for this build. You must specify a valid lifecycle phase or a goal in the format <plugin-prefix>:<goal> or <plugin-group-id>:<plugin-artifact-id>[:<plugin-version>]:<goal>. Available lifecycle phases are: validate, initialize, generate-sources, process-sources, generate-resources, process-resources, compile, process-classes, generate-test-sources, process-test-sources, generate-test-resources, process-test-resources, test-compile, process-test-classes, test, prepare-package, package, pre-integration-test, integration-test, post-integration-test, verify, install, deploy, pre-clean, clean, post-clean, pre-site, site, post-site, site-deploy. -> [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/NoGoalSpecifiedException

Pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>groupId</groupId>
    <artifactId>Lesson01CipherSolution</artifactId>
    <version>1.0-SNAPSHOT</version>

</project>

运行/调试配置:添加新配置 -> Maven -> 找到给定的项目文件夹 -> 应用/确定*命令行:空*配置文件:空*解决工作区 Artifact :未选中

有什么简单的解决办法吗？提前致谢。

更新:将“部署”添加到命令行后:

[INFO] Scanning for projects...
[INFO] 
[INFO] -------------------< groupId:Lesson01CipherSolution >-------------------
[INFO] Building Lesson01CipherSolution 1.0-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ Lesson01CipherSolution ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ Lesson01CipherSolution ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ Lesson01CipherSolution ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory C:\Users\A\Desktop\S2_Software\1VOP\Lesson 1\Lesson01CipherSolution\src\test\resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ Lesson01CipherSolution ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ Lesson01CipherSolution ---
[INFO] No tests to run.
[INFO] 
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ Lesson01CipherSolution ---
[INFO] 
[INFO] --- maven-install-plugin:2.4:install (default-install) @ Lesson01CipherSolution ---
[INFO] Installing C:\Users\A\Desktop\S2_Software\1VOP\Lesson 1\Lesson01CipherSolution\target\Lesson01CipherSolution-1.0-SNAPSHOT.jar to C:\Users\A\.m2\repository\groupId\Lesson01CipherSolution\1.0-SNAPSHOT\Lesson01CipherSolution-1.0-SNAPSHOT.jar
[INFO] Installing C:\Users\A\Desktop\S2_Software\1VOP\Lesson 1\Lesson01CipherSolution\pom.xml to C:\Users\A\.m2\repository\groupId\Lesson01CipherSolution\1.0-SNAPSHOT\Lesson01CipherSolution-1.0-SNAPSHOT.pom
[INFO] 
[INFO] --- maven-deploy-plugin:2.7:deploy (default-deploy) @ Lesson01CipherSolution ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  1.168 s
[INFO] Finished at: 2020-04-06T13:58:51+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project Lesson01CipherSolution: Deployment failed: repository element was not specified in the POM inside distributionManagement element or in -DaltDeploymentRepository=id::layout::url parameter -> [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

Answer 1

为了定义将执行哪个 Maven 目标，您必须在命令行部分的调试/运行配置中指定它，如下所示:

在您的示例中，您缺少命令行参数，这就是您收到错误的原因:

[ERROR] No goals have been specified for this build. You must specify a valid lifecycle phase or a goal in the format <plugin-prefix>:<goal> or <plugin-group-id>:<plugin-artifact-id>[:<plugin-version>]:<goal>. Available lifecycle phases are: validate, initialize, generate-sources, process-sources, generate-resources, process-resources, compile, process-classes, generate-test-sources, process-test-sources, generate-test-resources, process-test-resources, test-compile, process-test-classes, test, prepare-package, package, pre-integration-test, integration-test, post-integration-test, verify, install, deploy, pre-clean, clean, post-clean, pre-site, site, post-site, site-deploy. -> [Help 1]

编辑:

参见deploy section Maven 书籍。

您需要定义一个<repositories>您的 settings.xml 中的元素(不在你的 pom.xml 中，那很糟糕)或 <distributionManagement>您的 pom.xml 中的元素像这样:

<distributionManagement>
    <repository>
        <uniqueVersion>false</uniqueVersion>
        <id>corp1</id>
        <name>Corporate Repository</name>
        <url>file:///home/myfolder/.m2</url>
        <layout>default</layout>
    </repository>
</distributionManagement>

查看此Isn't maven-deploy-plugin aware of the pom in which I declared it as a build plugin?和

Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy default-deploy on project