POM文件配置

  dom4j dom4j 1.6.1 

下载成功了
头部报错，更新项目也不行

ArtifactTransferException: Failure to transfer xml-apis:xml-apis:jar:1.0.b2 from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact xml-apis:xml-apis:jar:1.0.b2 from/to central (http://repo.maven.apache.org/maven2): connection timed out to http://repo.maven.apache.org/maven2/xml-apis/xml-apis/1.0.b2/xml-apis-1.0.b2.jar