解决关于Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler

在配置pom.xml文件时，出现Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler问题，当时查了很久，添加<pluginManagment>标签也没有解决。 就参考了下window->preferences->lifecycle Mappings  然后点击

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