java - Vaadin 未找到前缀 jetty 的插件

Question

晚上好，我正在尝试安装 vaadin 框架并将其集成到我的 Eclipse 中，但是每次我尝试运行 Maven 构建时，我都会收到此错误 block ，主要部分是前缀 jetty 无法识别，我不知道如何来处理这个问题。请帮忙

  [INFO] Scanning for projects...
    [WARNING] The project com.gmail.khaled:my-starter-project:pom:1.0-SNAPSHOT uses prerequisites which is only intended for maven-plugin projects but not for non maven-plugin projects. For such purposes you should use the maven-enforcer-plugin. See https://maven.apache.org/enforcer/enforcer-rules/requireMavenVersion.html
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] My Starter Project                                                 [pom]
[INFO] My Starter Project-backend                                         [jar]
[INFO] My Starter Project-ui                                              [war]
[INFO] Downloading from : https://maven.vaadin.com/vaadin-prereleases/org/codehaus/mojo/maven-metadata.xml
[INFO] Downloading from : https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml
[INFO] Downloading from : https://maven.vaadin.com/vaadin-prereleases/org/apache/maven/plugins/maven-metadata.xml
[INFO] Downloading from : https://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml
[INFO] Downloaded from : https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml (14 kB at 13 kB/s)
[INFO] Downloaded from : https://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml (20 kB at 18 kB/s)
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] My Starter Project 1.0-SNAPSHOT .................... SKIPPED
[INFO] My Starter Project-backend ......................... SKIPPED
[INFO] My Starter Project-ui 1.0-SNAPSHOT ................. SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.739 s
[INFO] Finished at: 2019-03-18T21:39:18+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] No plugin found for prefix 'jetty' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (C:\Users\hp\.m2\repository), vaadin-prereleases (https://maven.vaadin.com/vaadin-prereleases), central (https://repo.maven.apache.org/maven2)] -> [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/NoPluginFoundForPrefixException

Answer 1

此错误消息表明，您尝试运行 jetty:run 目标的 pom.xml 中没有定义 Maven Jetty 插件。因此它失败了。通常多模块 Maven 项目中的约定是将 Jetty 插件放置到实际应用程序模块中。在您的情况下，它可能是“My Starter Project-ui”模块。如果不存在，您需要将其添加到那里。