eclipse clean maven工程提示pom.xml无法解析org.apache.maven.plugins:maven-clean-plugin:jar:2.6.1解决方法

今天用eclipse构建maven工程时，通过run as ->maven clean,发现pom.xml无法解析org.apache.maven.plugins:maven-clean-plugin:jar:2.6.1,报错如下：
[INFO] Scanning for projects…
[INFO]
[INFO] ————————————————————————
[INFO] Building zhc-lottery-task 1.0
[INFO] ————————————————————————
[INFO] Downloading: 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: 42.493 s
[INFO] Finished at: 2018-09-12T09:33:25+08:00
[INFO] Final Memory: 6M/15M
[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): connect timed out -> [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

找了本地仓库都有对应的包，于是使用命令行执行了一遍mvn clean,完全没有报错

返回到eclipse执行run as ->maven clean 也可以成功执行了，最终找到问题根本原因是eclipse maven配置问题打开window->preferencs->maven 配置一下就可以了