利用Docker安装

docker指令如下：

docker run  -d --name nexus3  --restart=always -p 8081:8081 -p 8082:8082 -p 8083:8083 -p 8084:8084 -v /Users/alistar/docker-data/nexus3:/nexus-data sonatype/nexus3

请确保 -v前面的路径/Users/alistar/docker-data/nexus3中，目录已存在。

maven的配置文件

如下是我的maven的配置文件settings.xml配置，请根据自己的实际情况修改，主要修改是：

• localRepository本地仓库
• ip地址

给一个参考如下：

<?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">
  	<!--本地的仓库-->
    <localRepository>/Users/alistar/dev-tool/local-repository</localRepository>
    <pluginGroups></pluginGroups>
    <proxies></proxies>
    <servers>
        <server>
            <id>nexus</id>
            <username>admin</username>
            <password>admin123</password>
        </server>
        <server>
            <id>maven-public</id>
            <username>admin</username>
            <password>admin123</password>
        </server>
        <server>
            <id>maven-releases</id>
            <username>admin</username>
            <password>admin123</password>
        </server>
        <server>
            <id>maven-snapshots</id>
            <username>admin</username>
            <password>admin123</password>
        </server>
        <server>
            <id>3rd-part</id>
            <username>admin</username>
            <password>admin123</password>
        </server>
        <server>
            <id>maven-central</id>
            <username>admin</username>
            <password>admin123</password>
        </server>
    </servers>
    <mirrors>
        <mirror>
            <id>maven-public</id>
            <name>public</name>
            <mirrorOf>central</mirrorOf>
            <url>http://192.168.100.2:8081/repository/maven-public/</url>
        </mirror>
        <mirror>
            <id>maven-releases</id>
            <name>releases</name>
            <mirrorOf>central</mirrorOf>
            <url>http://192.168.100.2:8081/repository/maven-releases/</url>
        </mirror>
        <mirror>
            <id>maven-snapshots</id>
            <name>snapshots</name>
            <mirrorOf>central</mirrorOf>
            <url>http://192.168.100.2:8081/repository/maven-snapshots/</url>
        </mirror>
        <mirror>
            <id>3rd-part</id>
            <name>3rd-part</name>
            <mirrorOf>central</mirrorOf>
            <url>http://192.168.100.2:8081/repository/3rd-part/</url>
        </mirror>
        <mirror>
            <id>maven-central</id>
            <name>maven-central</name>
            <mirrorOf>central</mirrorOf>
            <url>http://192.168.100.2:8081/repository/maven-central/</url>
        </mirror>
    </mirrors>
    <profiles>
        <profile>
            <id>jdk-1.8</id>
            <activation>
                <activeByDefault>true</activeByDefault>
                <jdk>1.8</jdk>
            </activation>
            <properties>
                <maven.compiler.source>1.8</maven.compiler.source>
                <maven.compiler.target>1.8</maven.compiler.target>
                <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>
            </properties>
        </profile>
        <profile>
            <id>nexus</id>
            <repositories>
                <repository>
                    <id>nexus</id>
                    <url>http://192.168.100.2:8081/repository/maven-public/</url>
                    <releases>
                        <enabled>true</enabled>
                        <updatePolicy>always</updatePolicy>
                    </releases>
                    <snapshots>
                        <enabled>true</enabled>
                        <updatePolicy>always</updatePolicy>
                    </snapshots>
                </repository>
            </repositories>
            <pluginRepositories>
                <pluginRepository>
                    <id>nexus</id>
                    <url>http://192.168.100.2:8081/repository/maven-public/</url>
                    <releases>
                        <enabled>true</enabled>
                        <updatePolicy>always</updatePolicy>
                    </releases>
                    <snapshots>
                        <enabled>true</enabled>
                        <updatePolicy>always</updatePolicy>
                    </snapshots>
                </pluginRepository>
            </pluginRepositories>
        </profile>
    </profiles>
    <activeProfiles>
        <activeProfile>nexus</activeProfile>
    </activeProfiles>
</settings>

私服jar包上传

在pom.xml中配置

    <distributionManagement>
        <repository>
            <id>maven-releases</id>
            <name>Nexus Release Repository</name>
            <url>http://192.168.100.2:8081/repository/maven-releases/</url>
        </repository>
        <snapshotRepository>
            <id>maven-snapshots</id>
            <name>Nexus Snapshot Repository</name>
            <url>http://192.168.100.2:8081/repository/maven-snapshots/</url>
        </snapshotRepository>
    </distributionManagement>

这里额外补充下，如果是nexus2，内容应该是：

    <!--nexus2的上传-->
    <distributionManagement>
        <!--项目内部的 maven 服务器-->
        <repository>
            <id>releases</id>
            <name>Releases</name>
            <url>http://localhost:8081/nexus/content/repositories/releases/</url>
        </repository>
        <!--项目内部的快照版本-->
        <snapshotRepository>
            <id>snapshots</id>
            <name>Snapshots</name>
            <url>http://localhost:8081/nexus/content/repositories/snapshots/</url>
        </snapshotRepository>
    </distributionManagement>

nexus的缓存更新

说实话，我看到好多教程都有这个东西，但是我也不知道这个有什么用处，就先记录下这个地方吧，以备不时之需。

1. 前往maven中央仓库下载 indexer-cli-xxx.jar 解压工具包

2. 下载离线索引文件

   nexus-maven-repository-index.gz
   nexus-maven-repository-index.properties
   

3. 将3个文件放在同一目录下解压，并利用如下指令解压，解压后会放在当前文件夹index这个目录下

   java -jar indexer-cli-xxx.jar -u nexus-maven-repository-index.gz -d indexer
   

请注意你下载时候当前版本号。

4. 拷贝索引
   将index目录拷贝到/sonatype-work/nexus3/blobs/default下。

5. 稍等片刻，当看到如图所示的时候，表示缓存更新成功：