异常:Unknown lifecycle phase "mvn". You must specify a valid lifecycle
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这是在使用maven打包方式启动springboot项目时出现的异常,
我的异常原因属于下面的情况:
此时maven指令行为:mvn spring-boot:run.
如果写成这样会导致最终的maven指令为:mvn mvn spring-boot:run.
所以需要注意修改为:spring-boot:run即可.
还有一种可能,Maven插件[Run As]-[Maven build]时并未为其指定goal或phase
解决方法：
在pom.xml中找到<build> 节点，在里面加上<defaultGoal>compile</defaultGoal>即可
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