Maven 无法从 Central 下载 mysql 连接器 8.0.12，显示以下错误：
Downloading: https://repo.maven.apache.org/maven2/mysql/mysql-connector-
java/8.0.12/mysql-connector-java-8.0.12.pom
[INFO] ---------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ---------------------------------------------------------------------
[INFO] Total time: 3.642 s
[INFO] Finished at: 2018-08-21T00:22:03+05:30
[INFO] Final Memory: 10M/113M
[INFO] ---------------------------------------------------------------------
[ERROR] Failed to execute goal on project OneSolution: Could not resolve
dependencies for project OneSolution:OneSolution:jar:1.1.1: Failed to
collect dependencies at mysql:mysql-connector-java:jar:8.0.12: Failed to
read artifact descriptor for mysql:mysql-connector-java:jar:8.0.12: Could
not transfer artifact mysql:mysql-connector-java:pom:8.0.12 from/to central
(https://repo.maven.apache.org/maven2): Received fatal alert:
protocol_version -> [Help 1]
[ERROR]
[ERROR] To see the …