1.下载对应的安装包
https://www.sonatype.com/oss-thank-you-mac-tgz

注意:目前的版本有2.X 和 3.X ,2.X的支持对Maven更友好一点,3.X的支持范围更广,支持ruby和docker。如果单纯的maven私服,建议使用2.x

2.解压安装包,并进入对应的bin目录下启动nexus
./nexus start

注意:3.X要求JDK的版本在1.8以上

3.访问地址,3.x默认是127.0.0.1:8081 2.x默认是127.0.0.1:8081/nexus ,默认的登陆账户密码为admin/admin123
修改端口或者密码,在etc下的nexus-default.properties

4.简单介绍一下Repository
Repository的type属性有:proxy,hosted,group三种。
proxy:即你可以设置代理,设置了代理之后,在你的nexus中找不到的依赖就会去配置的代理的地址中找
hosted:你可以上传你自己的项目到这里面
group:它可以包含前面两个,是一个聚合体。一般用来给客户一个访问nexus的统一地址。
简单的说,就是你可以上传私有的项目到hosted,以及配置proxy以获取第三方的依赖(比如可以配置中央仓库的地址)。前面两个都弄好了之后,在通过group聚合给客户提供统一的访问地址

5.如何上传jar包
先设置settings.xml,这里主要是配置用户名和密码,注意这里的id要和respositoryId对应
<servers>
      <server>
       <id>nexus</id>
       <username>admin</username>
       <password>admin123</password>
    </server>
</servers>

控制台
mvn deploy:deploy-file -DgroupId=ebay -DartifactId=ebay -Dversion=0.0.1-SNAPSHOT -Dpackaging=jar  -Dfile=/Users/yuliangliang/ebay-0.0.1-SNAPSHOT.jar -Durl=http://localhost:8081/repository/maven-snapshots/ -DrepositoryId=nexus
效果如下
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-deploy-plugin:2.7:deploy-file (default-cli) @ standalone-pom ---
Downloading: http://localhost:8081/repository/maven-snapshots/ebay/ebay/0.0.1-SNAPSHOT/maven-metadata.xml
Uploading: http://localhost:8081/repository/maven-snapshots/ebay/ebay/0.0.1-SNAPSHOT/ebay-0.0.1-20180102.145036-1.jar
Uploaded: http://localhost:8081/repository/maven-snapshots/ebay/ebay/0.0.1-SNAPSHOT/ebay-0.0.1-20180102.145036-1.jar (34194 KB at 22218.2 KB/sec)
Uploading: http://localhost:8081/repository/maven-snapshots/ebay/ebay/0.0.1-SNAPSHOT/ebay-0.0.1-20180102.145036-1.pom
Uploaded: http://localhost:8081/repository/maven-snapshots/ebay/ebay/0.0.1-SNAPSHOT/ebay-0.0.1-20180102.145036-1.pom (390 B at 5.5 KB/sec)
Downloading: http://localhost:8081/repository/maven-snapshots/ebay/ebay/maven-metadata.xml
Uploading: http://localhost:8081/repository/maven-snapshots/ebay/ebay/0.0.1-SNAPSHOT/maven-metadata.xml
Uploaded: http://localhost:8081/repository/maven-snapshots/ebay/ebay/0.0.1-SNAPSHOT/maven-metadata.xml (758 B at 10.4 KB/sec)
Uploading: http://localhost:8081/repository/maven-snapshots/ebay/ebay/maven-metadata.xml
Uploaded: http://localhost:8081/repository/maven-snapshots/ebay/ebay/maven-metadata.xml (268 B at 4.0 KB/sec)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.567 s
[INFO] Finished at: 2018-01-02T22:50:38+08:00
[INFO] Final Memory: 8M/155M
[INFO] ------------------------------------------------------------------------

也可以同步本地仓库到私服上去


6.项目中的使用,这样就能在项目中引用了,具体的引用可以在pom中配置,也可以在maven的settings.xml文件中修改
<mirrors>
    <mirror>
      <id>nexus</id>
      <mirrorOf>*</mirrorOf>
      <url>http://127.0.0.1:8082/nexus/content/groups/public/</url>
    </mirror>
  </mirrors>
<profiles>
   <profile>
      <id>nexus</id>
      <repositories>
        <repository>
          <id>nexus</id>
          <url>http://127.0.0.1:8082/nexus/content/groups/public/</url>
          <releases><enabled>true</enabled></releases>
          <snapshots><enabled>true</enabled></snapshots>
        </repository>  
      </repositories>
     <pluginRepositories>
        <pluginRepository>
          <id>nexus</id>
          <url>http://127.0.0.1:8082/nexus/content/groups/public/</url>
          <releases><enabled>true</enabled></releases>
          <snapshots><enabled>true</enabled></snapshots>
        </pluginRepository>
      </pluginRepositories>
    </profile>
  </profiles>
  <activeProfiles>
    <activeProfile>nexus</activeProfile>
  </activeProfiles>

 7.上传项目到私服上去
先设置settings.xml,配置servers,见步骤5
项目的pom文件添加如下代码
<distributionManagement>
 <repository>
   <id>release</id>
   <name>Release Repository</name>
   <url>http://ip/nexus/content/repositories/releases</url>
 </repository>
 <snapshotRepository>
   <id>snapshot</id>
   <name>Snapshot Repository</name>
   <url>http://ip/nexus/content/repositories/snapshots</url>
 </snapshotRepository>
</distributionManagement>



执行deploy -e即可

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