Failure to transfer org.springframework.boot:spring-boot-starter-parent:pom:2.2.6.RELEASE 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 org.springframework.boot:spring-boot-starter-parent:pom:2.2.6.RELEASE from/to central (https://repo.maven.apache.org/maven2): No such host is known (repo.maven.apache.org)

出现如上错误是由于Maven的配置文件无法正常连接到远程仓库中
需要检查如下配置文件