每次从github上下载下来的项目都报如下错误
could not transfer artifact org.springframework.boot:spring-boot-starter-parent:pom:2.2.5.RELEASE from/to nexus-aliyun (https://maven.aliyun.com/nexus/content/groups/public): PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
在Maven命令后加入参数“-Dmaven.wagon.http.ssl.insecure=true -Dmaven.wagon.http.ssl.allowall=true”
这样设置可以跳过证书检查，然后maven clean,compile,再install就可以解决这个问题了
参看链接：https://blog.csdn.net/xxaann/article/details/104794669