maven的預設的中央倉庫為：maven.apache.org ，當本地倉庫或者自己的maven 私服不存在相關的jar時，如沒有特別設定，就去檢查maven中央倉庫有沒有。

由於連線國外網站時網速特慢，為解決這個問題，os china 建立了一個maven 的私服。為了記憶，特將此記錄。

settings.xml 設定映象方法步驟如下：
1. mirrors 設定

<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>nexus-osc</id>
        <mirrorOf>central</mirrorOf>
        <name>Nexus osc</name>
        <url>http://maven.oschina.net/content/groups/public/</url>
    </mirror>
    <mirror>
        <id>nexus-osc-thirdparty</id
 
>
        <mirrorOf>thirdparty</mirrorOf>
        <name>Nexus osc thirdparty</name>
        <url>http://maven.oschina.net/content/repositories/thirdparty/</url>
    </mirror>
</mirrors>

2. repositories 設定

<profile>
                <id>jdk-1.4</id
 
>

                <activation>
                    <jdk>1.4</jdk>
                </activation>

                <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>