解析Maven的settings.xml文件

一、镜像问题

1、为什么需要配置maven国内镜像？

• 在不配置镜像的情况下,maven默认会使用中央库.--https://repo.maven.apache.org/maven2
  
• maven中央库在国外,有时候访问会很慢,尤其是下载较大的依赖的时候,有时候速度会很慢,甚至会出现无法下载的情况。
• 为了解决依赖下载速度的问题,需要配置maven国内镜像。

2、配置国内maven镜像（阿里云镜像）

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

3、OSC MAVEN仓库目前已停止提供服务。

以下地址已访问不了：

http://maven.oschina.net/content/groups/public

http://maven.oschina.net/content/repositories/thirdparty/

<?xml version="1.0"?>  
<settings>  
<localRepository>D:
epository</localRepository><!--需要改成自己的maven的本地仓库地址-->  
    <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>  
    <profile>  
       <id>nexus</id>   
        <repositories>  
            <repository>  
                <id>nexus</id>  
                <name>local private nexus</name>  
                <url>http://maven.oschina.net/content/groups/public/</url>  
                <releases>  
                    <enabled>true</enabled>  
                </releases>  
                <snapshots>  
                    <enabled>false</enabled>  
                </snapshots>  
            </repository>  
        </repositories>  
          
        <pluginRepositories>  
            <pluginRepository>  
            <id>nexus</id>  
            <name>local private nexus</name>  
            <url>http://maven.oschina.net/content/groups/public/</url>  
            <releases>  
                <enabled>true</enabled>  
            </releases>  
            <snapshots>  
                <enabled>false</enabled>  
            </snapshots>  
            </pluginRepository>  
        </pluginRepositories>  
    </profile></profiles>  
</settings>