maven阿里云中央仓库

修改maven根目录下的conf文件夹中的setting.xml文件，内容如下：

 <mirror>  

      <id>alimaven</id>  

      <name>aliyun maven</name>  

      <url>http://maven.aliyun.com/nexus/content/groups/public/</url>  

      <mirrorOf>central</mirrorOf>          

    </mirror> 

或

<repositories><!-- 代码库 -->

        <repository>

            <id>maven-ali</id>

            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>

            <releases>

                <enabled>true</enabled>

            </releases>

            <snapshots>

                <enabled>true</enabled>

                <updatePolicy>always</updatePolicy>

                <checksumPolicy>fail</checksumPolicy>

            </snapshots>

        </repository>

    </repositories>