初学者，导入maven项目pom文件报错如下：
Execution default-resources of goal org.apache.maven.plugins:maven-resources-plugin:2.5:resources failed: Plugin org.apache.maven.plugins:maven-resources-plugin:2.5 or one of its dependencies could not be resolved: Failure to transfer commons-cli:commons-cli:jar:1.0 from https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact commons-cli:commons-cli:jar:1.0 from/to central (https://repo.maven.apache.org/maven2): connection timed out to https://repo.maven.apache.org/maven2/commons-cli/commons-cli/1.0/commons-cli-1.0.jar (org.apache.maven.plugins:maven-resources-plugin:2.5:resources:default-resources:process-resources)Execution default-
