有用maven的小伙伴么？我遇到个问题，运行mvn test时报错，错误信息如下，有知道的麻烦给解答一下谢谢

[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model for com.juvenxu.mvnbook:hello-world:jar:1.0-SNAPSHOT
[WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-compiler-plugin is missing. @ line 19, column 14
[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]
主要是我为了生成一个可以运行main函数的jar，所以在pom.xml中加了如下配置

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这些都是警告信息（WARNING）不会影响程序的。
错误信息是ERROR的。

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