无法在Windows上运行我的Maven项目

Question

我有一个需要进行的Maven项目。我安装了Eclipse SE（Mars 2，因为我需要在JDK 1.7上工作），并且只是试图将项目导入为an existing Maven project，但是在Eclipse中出现此错误：我从这里下载了maven 3.5.4并将其添加bin到了我的路径。现在，我尝试mvn clean从项目文件夹中的命令行执行此错误：[INFO] --------------------------------[ jar ]---------------------------------Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.5/maven-clean-plugin-2.5.pom[INFO] ------------------------------------------------------------------------[INFO] BUILD FAILURE[INFO] ------------------------------------------------------------------------[INFO] Total time: 0.792 s[INFO] Finished at: 2018-06-26T09:42:32-05:00[INFO] ------------------------------------------------------------------------[ERROR] Plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.5: Could not transfer artifact org.apache.maven.plugins:maven-clean-plugin:pom:2.5 from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version -> [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/PluginResolutionException看来这是一个很普遍的错误，但我还不能解决。怎么解决呢？我看不到settings.xml我的.m2文件夹中。

Answer 1

如果在.m2文件夹中看不到setting.xml，则可以手动创建文件，并且需要将文件显式放置在该位置。放置文件后，用于Eclipse的maven插件也将开始使用该文件。

您要做的另一件事是尝试将项目移至其他位置。例如：c：\ users \ <> \ Workspace \ Project \到E：\ Workspace \ Project \看起来很奇怪，但有时此解决方案可行。