io.renren:renren-admin:jar:3.2.0下载不了？这个问题怎么解决？
[INFO] -----------------------< io.renren:renren-admin >-----------------------
[INFO] Building renren-admin 3.2.0
[INFO] --------------------------------[ jar ]---------------------------------
Downloading from public: http://maven.aliyun.com/nexus/content/groups/public/io/renren/renren-common/3.2.0/renren-common-3.2.0.pom
Downloading from central: https://repo.maven.apache.org/maven2/io/renren/renren-common/3.2.0/renren-common-3.2.0.pom
[WARNING] The POM for io.renren:renren-common:jar:3.2.0 is missing, no dependency information available
Downloading from public: http://maven.aliyun.com/nexus/content/groups/public/io/renren/renren-common/3.2.0/renren-common-3.2.0.jar
Downloading from central: https://repo.maven.apache.org/maven2/io/renren/renren-common/3.2.0/renren-common-3.2.0.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6.843 s
[INFO] Finished at: 2019-01-09T11:07:00+08:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project renren-admin: Could not resolve dependencies for project io.renren:renren-admin:jar:3.2.0: Could not find artifact io.renren:renren-common:jar:3.2.0 in public (http://maven.aliyun.com/nexus/content/groups/public/) -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException
