解決IntelliJ IDEA下Maven報錯Unknown lifecycle phase ".test.skip=true". You must specify a valid lifecycle phase or a goal in the format

??筆者使用 IntelliJ IDEA 中的終端（Terminal）來運行跳過單元測試時的命令 mvn package -Dmaven.test.skip=true 時，發現總是報如下的錯：

筆者報錯時的運行環境：

• JDK 17
• Maven 3.6.3
• IntelliJ IDEA 2021.2.2 (Ultimate Edition)

[ERROR] Unknown lifecycle phase ".test.skip=true". You must specify a valid lifecycle phase or a goal in the format <plugin-prefix>:<goal> or <plugin-group-id>:<plugin-artifact-id>[:<p lugin-version>]:<goal>. Available lifecycle phases are: validate, initialize, generate-sources, process-sources, generate-resources, process-resources, compile, process-classes, genera te-test-sources, process-test-sources, generate-test-resources, process-test-resources, test-compile, process-test-classes, test, prepare-package, package, pre-integration-test, integr ation-test, post-integration-test, verify, install, deploy, pre-clean, clean, post-clean, pre-site, site, post-site, site-deploy. -> [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/LifecyclePhaseNotFoundException

??原來是因為 IntelliJ IDEA 的終端默認使用 PowerShell 來運行命令，而在 PowerShell 下，參數 -Dmaven.test.skip=true 沒有被正確地識別。

??不過這只需要加在此參數外加單引號即可，即：mvn package '-Dmaven.test.skip=true'。也可以選擇將 IntelliJ IDEA 的終端設置成 CMD 模式（Command Prompt），不過筆者通常不喜歡這樣做，畢竟 PowerShell 比原始的 CMD 要強大。

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