为什么我用阿里云的Maven仓库下不了jar包

Question

我配置了阿里云的Maven仓后，一些基本的jar包还是可以下载的，如果是Spring Boot相关的jar包，都会报如下错误：

#NOTE: This is a Maven Resolver internal implementation file, its format can be changed without prior notice.
#Thu Apr 25 10:03:34 CST 2019
http://maven.aliyun.com/nexus/content/groups/public/.error=Could not transfer artifact org.springframework.boot:spring-boot-starter-freemarker:jar:javadoc:2.1.4.RELEASE from/to nexus-aliyun (http://maven.aliyun.com/nexus/content/groups/public): sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
@default-nexus-aliyun-http://maven.aliyun.com/nexus/content/groups/public/.lastUpdated=1556157814447

看错误提示应该是证书的问题，请问如何配置呀，谢谢！

Answer 1

导入以后，没有效果怎么破

Answer 2

这应该是需要网站证书，看看这个 https://blog.csdn.net/gabriel576282253/article/details/81531746

Answer 3

原因我已经找到了，我以前部署过CAS服务，所以导入了自己的证书，现在重装了JDK后该错误没有出现