Maven - 解决Maven下载依赖包速度慢问题

通常我们会因为下载jar包速度缓慢而苦恼，这十分影响开发效率，以及程序员的心情，在IDE下载jar时，无法对IDE做任何动作，只能大眼对小眼。

下载jar速度慢究其原因就是因为很多资源都是国外的，我们下载一个小文件几乎就跨越了一个太平洋那么远，那么有什么方法可以让下载速度变快呢？

其实方法很简单：maven是支持镜像的，我们可以在${maven_home}的conf目录下的setting.xml文件中找到<mirrors></mirrors>标签

<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>
     -->  

  </mirrors>  

在这个标签中加入国内的镜像即可

这里我推荐maven阿里云中央仓库

<mirrors>
    <mirror>
      <id>alimaven</id>
      <name>aliyun maven</name>
      <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
      <mirrorOf>central</mirrorOf>
    </mirror>
  </mirrors>

<mirror>
 <id>alimaven</id>
 <mirrorOf>central</mirrorOf>
 <name>aliyun maven</name>
 <url>http://maven.aliyun.com/nexus/content/repositories/central/</url>
</mirror> 

下面是一些常用的maven国内镜像

<mirror>
      <id>CN</id>
      <name>OSChina Central</name>
      <url>http://maven.oschina.net/content/groups/public/</url>
      <mirrorOf>central</mirrorOf>
    </mirror>
    <mirror>
          <id>repo2</id>
          <mirrorOf>central</mirrorOf>
          <name>Human Readable Name for this Mirror.</name>
          <url>http://repo2.maven.org/maven2/</url>
    </mirror>
    <mirror>
          <id>net-cn</id>
          <mirrorOf>central</mirrorOf>
          <name>Human Readable Name for this Mirror.</name>
          <url>http://maven.net.cn/content/groups/public/</url>
    </mirror>
    <mirror>
          <id>ui</id>
          <mirrorOf>central</mirrorOf>
          <name>Human Readable Name for this Mirror.</name>
         <url>http://uk.maven.org/maven2/</url>
    </mirror>
    <mirror>
          <id>ibiblio</id>
          <mirrorOf>central</mirrorOf>
          <name>Human Readable Name for this Mirror.</name>
         <url>http://mirrors.ibiblio.org/pub/mirrors/maven2/</url>
    </mirror>
    <mirror>
          <id>jboss-public-repository-group</id>
          <mirrorOf>central</mirrorOf>
          <name>JBoss Public Repository Group</name>
         <url>http://repository.jboss.org/nexus/content/groups/public</url>
    </mirror>    

    <mirror>
          <id>JBossJBPM</id>
          <mirrorOf>central</mirrorOf>
          <name>JBossJBPM Repository</name>
          <url>https://repository.jboss.org/nexus/content/repositories/releases/</url>
    </mirror>
         <mirror>
          <id>antelink</id>
          <mirrorOf>central</mirrorOf>
          <name>antelink Repository</name>
          <url>http://maven.antelink.com/content/repositories/central/</url>
    </mirror>
    <mirror>
          <id>openkoala</id>
          <mirrorOf>central</mirrorOf>
          <name>openkoala Repository</name>
          <url>http://nexus.openkoala.org/nexus/content/groups/Koala-release/</url>
    </mirror>
    <mirror>
          <id>tmatesoft</id>
          <mirrorOf>central</mirrorOf>
          <name>tmatesoft Repository</name>
          <url>http://maven.tmatesoft.com/content/groups/public/</url>
    </mirror>
    <mirror>
          <id>mavensync</id>
          <mirrorOf>central</mirrorOf>
          <name>mavensync Repository</name>
          <url>http://mavensync.zkoss.org/maven2/</url>
    </mirror>