我只能说，对于一个菜鸟的我，跟着老师的步骤一步步到编译的时候，报错。是不是有什么前提条件没讲明白啊 [ERROR] Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of itsdependencies could not be resolved: Failed to read artifactdescriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6: Could not transfer artifact org.apache.maven.plugins:maven-resources-plugin:pom:2.6 from/to central (https://repo.maven.apache.org/maven2): repo.maven.apache.org: Unknown host repo.maven.apache.org -> [Help 1]