未知的生命周期阶段“.mainClass=com.blobs.quickstart.App”

Question

我运行通过这个演示（使用 PowerShell）。一切都很好，直到我运行这条线：

mvn exec:java -Dexec.mainClass="com.blobs.quickstart.App" -Dexec.cleanupDaemonThreads=false

然后我得到以下异常：

[INFO]
[INFO] --------------< com.blobs.quickstart:blob-quickstart-v12 >--------------
[INFO] Building blob-quickstart-v12 1.0-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.497 s
[INFO] Finished at: 2019-11-27T18:49:01-05:00
[INFO] ------------------------------------------------------------------------
[ERROR] Unknown lifecycle phase ".mainClass=com.blobs.quickstart.App". You must specify a valid lifecycle phase or a goal in the format <plugin-prefix>:<goal> or <plugin-group-id>:<plugin-artifact-id>[:<plugin-version>]:<goal>. 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]
[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

这是我按照 https://docs.microsoft.com/en-us/azure/storage/blobs/storage-quickstart-blobs-java?tabs=powershell#get-the-connection-string

的步骤 link

Answer 1

正如ManojReddy-MSFT建议的那样：

大多数情况下，这个错误是因为缺少插件http://www.mojohaus.org/exec-maven-plugin/index.html

你能验证一下你有没有这个插件吗？如果没有，你能试试这个插件吗？

也可以参考“Unknown lifecycle phase ”mvn“. You must specify a valid lifecycle phase or a goal” While Deploying the application using Azure

Answer 2

即使使用插件，我也收到了该错误消息。我通过更改双引号来修复它（我也在使用 Powershell）：

mvn exec:java -D"exec.mainClass=my.main.Clazz" [other args with same quote pattern]

未知的生命周期阶段“.mainClass=com.blobs.quickstart.App”

Unknown lifecycle phase ".mainClass=com.blobs.quickstart.App"

java

powershell

blob

azure

azure-web-app-service