文章格式不好调，我是现在word里面写的，贴上来样式都变了，把原稿提供给大家下载吧，转载的话，请大家提供出处，尊重一下我的劳动成果：http://cangzhitao.com/wp-content/uploads/2012/04/Nexus-Install.doc
1、 下载Nexus：http://www.sonatype.org/downloads/nexus-2.0.3-bundle.tar.gz ，我所下的是带Web容器的bundle包，解压后有两个目录nexus-2.0.3为Nexus运行时所需要的文件，sonatype-work包含配置文件、日志文件、仓库文件等，备份时我们备份sonatype-work目录就行了；
2、 启动Nexus F:\Program Files\nexus-2.0.3\bin\jsw\windows-x86-32\nexus.bat，打开浏览器访问http://localhost:8081/nexus就能看到Nexus界面，默认是匿名访问，管理员默认用户名密码为admin/admin123；
3、 用管理员登陆，点击左边栏的Views/Repositories中的Repositories，找到Apache Snapshots，将下面的选项卡切换到Configuration，将Download Remote Indexes置为true，同样将Codehaus Snapshots，Central进行相同设置，保存后，将刚才的三个仓库，选中repaire index，更新并下载远程索引；
4、 修改<mirror>打开主目录下的settings.xml，在mirriors节点下面添加
<mirror>
<id>nexus</id>
<mirrorOf>*</mirrorOf>
<url>http://localhost:8081/nexus/content/groups/public</url>
</mirror>
修改<profiles，在节点profiles下面添加
<profile>
<id>nexus</id>
<repositories>
<repository>
<id>nexus</id>
<name>Nexus</name>
<url>http://localhost:8081/nexus/content/groups/public/</url>
<releases><enabled>true</enabled></releases>
<snapshots><enabled>true</enabled></snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>nexus</id>
<name>Nexus</name>
<url>http://localhost:8081/nexus/content/groups/public/</url>
<releases><enabled>true</enabled></releases>
<snapshots><enabled>true</enabled></snapshots>
</pluginRepository>
</pluginRepositories>
</profile>
修改<activeProfiles>节点
<activeProfiles>
<activeProfile>nexus</activeProfile>
</activeProfiles>
如果要发布jar包到私服，还需要配置<servers>节点
<server>
<id>releases</id>
<username>admin</username>
<password>admin123</password>
</server>
<server>
<id>snapshots</id>
<username>admin</username>
<password>admin123</password>
</server>
配置完，整个文件如下（节省空间，去除了注释）：
<?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>
<servers>
<server>
<id>releases</id>
<username>admin</username>
<password>admin123</password>
</server>
<server>
<id>snapshots</id>
<username>admin</username>
<password>admin123</password>
</server>
</servers>
<mirrors>
<mirror>
<id>nexus</id>
<mirrorOf>*</mirrorOf>
<url>http://localhost:8081/nexus/content/groups/public</url>
</mirror>
</mirrors>
<profiles>
<profile>
<id>nexus</id>
<repositories>
<repository>
<id>nexus</id>
<name>Nexus</name>
<url>http://localhost:8081/nexus/content/groups/public/</url>
<releases><enabled>true</enabled></releases>
<snapshots><enabled>true</enabled></snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>nexus</id>
<name>Nexus</name>
<url>http://localhost:8081/nexus/content/groups/public/</url>
<releases><enabled>true</enabled></releases>
<snapshots><enabled>true</enabled></snapshots>
</pluginRepository>
</pluginRepositories>
</profile>
</profiles>
<activeProfiles>
<activeProfile>nexus</activeProfile>
</activeProfiles>
</settings>
5、 配置完，eclipse首先会在私服寻找jar包，找不到将回到公共仓库寻找下载到私服，再下载到本地。如果要发布jar包到私服，在pom.xml里面加上如下配置：
<distributionManagement>
<repository>
<id>releases</id>
<name>Nexus Releases Respository</name>
<url>http://localhost:8081/nexus/content/repositories/releases</url>
</repository>
<snapshotRepository>
<id>snapshots</id>
<name>Nexus Snapshots Repository</name>
<url>http://localhost:8081/nexus/content/repositories/snapshots</url>
</snapshotRepository>
</distributionManagement>
maven在项目执行clean deploy命令时，将会部署到私服对应的Releases或Snapshots仓库
6、 Nexus的3rd party可以让我们直接上传jar包到私服，选择3rd party仓库，点击Artifact Upload选项卡，选择GAV Parameters，填入相关jar包版本信息，选中上传后，即可以在maven使用上传的jar包