使用Java 1.7构建Maven项目失败，求助解决方法

报错信息 #

[INFO] Downloading from : 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: 0.604 s
[INFO] Finished at: 2022-11-26T12:38:34+05:30
[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): repo.maven.apache.org: Unknown host repo.maven.apache.org -> [Help 1]
[ERROR]

解决步骤 #

• 排查网络连通性：在终端执行ping repo.maven.apache.org，若提示无法找到主机，修改本地DNS为公共DNS（如114.114.114.114）后重试。
• 检查代理配置：打开Maven的settings.xml文件（路径为~/.m2/settings.xml或MAVEN_HOME/conf/settings.xml），确认代理配置是否正确；无需代理时，删除或注释所有代理相关节点。
• 清理本地仓库缓存：删除本地仓库中~/.m2/repository/org/apache/maven/plugins/maven-clean-plugin/2.5/目录，执行mvn clean install强制重新下载依赖。
• 适配Maven版本：Java 1.7需搭配Maven 3.2.x至3.5.x版本，执行mvn -v查看当前版本，过高则降级到兼容版本。
• 手动安装依赖：下载maven-clean-plugin-2.5.pom和对应jar包，放到本地仓库的对应路径后重新构建。

内容的提问来源于stack exchange，提问作者Megha Verma