Mirror source
ubuntu: http://archive.ubuntu.com
aliyun: https://mirrors.aliyun.com
Tencent: https://mirrors.cloud.tencent.com/
163: http://mirrors.163.com/ubuntu/
huawei: https://mirrors.huaweicloud.com/
Tsinghua: https://mirrors.tuna.tsinghua.edu.cn/
HKUST: https://mirrors.ustc.edu.cn/
Beijing Institute of Technology: http: //mirror.bit.edu.cn
maven: http://repo1.maven.org/maven2
jboss: http://repository.jboss.com/maven2/
maven: http://mvnrepository.com/
Sonatype Nexus: https://repository.sonatype.org/content/groups/public/