本文连接方法为修改maven/conf文件 

maven conf配置阿里镜像

<?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">
  <pluginGroups>
  </pluginGroups>
  <proxies>
  </proxies>
  <servers>    
  </servers>
  <mirrors>
	 <mirror>
          <id>alimaven</id>
          <name>aliyun maven</name>
          <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
          <mirrorOf>central</mirrorOf>        
     </mirror>
  </mirrors>
  <profiles>
  </profiles>
</settings>

私服conf配置

<?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">
  <pluginGroups>
  </pluginGroups>

  <proxies>
  </proxies>

  <servers>
    <server>
      <id>dev</id>
	  <!--用户名密码-->
      <username>账号</username>
      <password>密码</password>
    </server>
  </servers>

  <mirrors>
	<mirror>
      <id>dev</id>
      <mirrorOf>*</mirrorOf>
      <url>http://Nexus-ip:端口/repository/maven-public/</url>
    </mirror>
  </mirrors>
  
  <profiles>
	  <profile>  
	   <!--profile的id-->
	    <id>dev</id>  
		<repositories>  
		  <repository> 
			<!--仓库id，repositories可以配置多个仓库，保证id不重复-->
			<id>nexus</id>  
			<!--仓库地址，即nexus仓库组的地址-->
			<url>http://Nexus-ip:端口/repository/maven-public/</url>  
			<!--是否下载releases构件-->
			<releases>  
			  <enabled>true</enabled>  
			</releases>  
			<!--是否下载snapshots构件-->
			<snapshots>  
			  <enabled>true</enabled>  
			</snapshots>  
		  </repository>  
		</repositories> 
		 <pluginRepositories> 
			<!-- 插件仓库，maven的运行依赖插件，也需要从私服下载插件 -->
			<pluginRepository> 
				<!-- 插件仓库的id不允许重复，如果重复后边配置会覆盖前边 -->
				<id>public</id> 
				<name>Public Repositories</name> 
				<url>http://Nexus-ip:端口/repository/maven-public/</url> 
			</pluginRepository> 
		</pluginRepositories> 
	  </profile> 
  </profiles>

   <!-- 开启私服配置-->
   <activeProfiles>
    <activeProfile>dev</activeProfile>
   </activeProfiles>
</settings>