解决idea下载依赖包慢到出奇

右键项目选中maven选项，然后选择“open settings.xml”或者 “create settings.xml”，然后把如下代码粘贴进去就可以了。重启IDE。

 <?xml version="1.0" encoding="UTF-8"?>
 <settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
     <mirrors> <!-- mirror
          | Specifies a repository mirror site to use instead of a given repository. The repository that
          | this mirror serves has an ID that matches the mirrorOf element of this mirror. IDs are used
          | for inheritance and direct lookup purposes, and must be unique across the set of mirrors.
          |
         <mirror>
           <id>mirrorId</id>
           <mirrorOf>repositoryId</mirrorOf>
           <name>Human Readable Name for this Mirror.</name>
           <url>http://my.repository.com/repo/path</url>
         </mirror>
          -->
         <mirror>
             <id>alimaven</id>
             <name>aliyun maven</name>
             <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
             <mirrorOf>central</mirrorOf>
         </mirror>
         <mirror>
             <id>uk</id>
             <mirrorOf>central</mirrorOf>
             <name>Human Readable Name for this Mirror.</name>
             <url>http://uk.maven.org/maven2/</url>
         </mirror>
         <mirror>
             <id>CN</id>
             <name>OSChina Central</name>
             <url>http://maven.oschina.net/content/groups/public/</url>
             <mirrorOf>central</mirrorOf>
         </mirror>
         <mirror>
             <id>nexus</id>
             <name>internal nexus repository
             </name> <!-- <url>http://192.168.1.100:8081/nexus/content/groups/public/</url>-->
             <url>http://repo.maven.apache.org/maven2</url>
             <mirrorOf>central</mirrorOf>
         </mirror>
     </mirrors>
 </settings>