Maven编译报错 Unknown lifecycle phase "mvn" 解决办法

[ERROR] Unknown lifecycle phase “mvn”. You must specify a valid lifecycle phase or a goal in the format : or :[:]:. 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]

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运行四个命令：

第一步：mvn install

第二步：mvn compiler:compile

第三步：mvn org.apache.maven.plugins:maven-compiler-plugin:compile

第四步：mvn org.apache.maven.plugins:maven-compiler-plugin:2.0.2:compile