Failure to transfer org.apache.maven.plugins:maven-surefire-plugin:pom:2.12.4 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.apache.maven.plugins:maven-surefire-plugin:pom:2.12.4 from/to central (https://repo.maven.apache.org/maven2): The operation was cancelled.
原因可能是下载文件错误
解决方法：
1.找到maven本地仓库，目录：C:\Users\Administrator\.m2\repository\org\apache\maven\plugins\maven-surefire-plugin\2.12.4
2.对比maven远程仓库，地址：https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-surefire-plugin/2.12.4/，下载补全maven-surefire-plugin-2.12.4.jar、maven-surefire-plugin-2.12.4.pom及其对应的sha1文件
3.删除文件maven-surefire-plugin-2.12.4.pom.lastUpdated
4.刷新项目或者右键-->maven-->Update Dependencies