- 执行maven命令时产生的错误
- Plugin org.apache.maven.plugins:maven-clean-plugin:2.6.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.6.1: Could not transfer artifact org.apache.maven.plugins:maven-clean-plugin:pom:2.6.1 from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version
  - 原因:其实就是中央仓库必须要TLS1.2版本才能访问。
- 解决方案:更新jdk为1.8
 
 
- Plugin org.apache.maven.plugins:maven-clean-plugin:2.6.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.6.1: Could not transfer artifact org.apache.maven.plugins:maven-clean-plugin:pom:2.6.1 from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version
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