Maven私服搭建(Nexus Repository Manager 3)

发布时间:2019-06-11 06:00:03发布者:Mr.Zhang阅读(358)

下载和安装

下载地址:https://help.sonatype.com/repomanager3/download

注意:Nexus Repository Manager 3是一个Java服务器应用程序,安装需要 jdk1.8以上的版本。

下载解压后,用命令行到解压目录的bin目录下运行 nexus.exe /run(Linux运行./nexus run),启动完成后会显示“Started Sonatype Nexus”:

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Started Sonatype Nexus OSS 3.16.2-01

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访问Nexus管理后台

Nexus管理后台地址:http://localhost:8081/
点击右上角Sign in登录,默认账号和密码为:admin/admin123

在Repositories 仓库管理界面中有多种默认的仓库,也可以添加新的仓库,本实例直接使用默认的仓库:
maven-central,Type为proxy,表示代理仓库。代理仓库用来代理远程仓库(maven-central代理的是超级POM中配置的Maven中央仓库),当在下载组件时,如果代理仓库搜索不到,则会把请求转发到远程仓库从远程仓库下载。从远程仓库下载后会缓存到代理仓库,下次还有该组件的请求则会直接到代理仓库下载,不会再次请求远程仓库。

maven-releases/maven-snapshots,Type为hosted,表示为宿主仓库。宿主仓库主要用来部署团队内部使用的内部组件,默认的maven-releases和maven-snapshots分别用来部署团队内部的发布版本组件和快照版本组件。

配置代理仓库

配置settings.xml:

<settings>
   <!-- 配置镜像,此处拦截所有远程仓库的请求到代理仓库-->
  <mirrors>
    <mirror>
      <id>nexus</id>
      <mirrorOf>*</mirrorOf>
      <url>http://localhost:8081/repository/maven-central/</url>
    </mirror>
  </mirrors>
  <!-- 配置远程库和远程插件库-->
  <profiles>
    <profile>
      <id>nexus</id>
      <!-- Maven用于填充构建系统本地存储库的远程仓库集合-->
      <repositories>
        <repository>
          <id>central</id>
          <url>http://central</url>
          <releases><enabled>true</enabled></releases>
          <snapshots><enabled>true</enabled></snapshots>
        </repository>
      </repositories>
     <!-- 类似于repositories元素,指定Maven可以在哪里找到Maven插件的远程仓库位置-->
     <pluginRepositories>
        <pluginRepository>
          <id>central</id>
          <url>http://central</url>
          <releases><enabled>true</enabled></releases>
          <snapshots><enabled>true</enabled></snapshots>
        </pluginRepository>
      </pluginRepositories>
    </profile>
  </profiles>
  <!-- 激活profiles配置 -->
  <activeProfiles>
    <activeProfile>nexus</activeProfile>
  </activeProfiles>
</settings>

创建Maven项目,pom.xml如下:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.nocoffee</groupId>
  <artifactId>coffee-api</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>coffee-api</name>
  <url>http://maven.apache.org</url>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
</project>

执行mvn clean,执行mvn clean需要下载maven-clean-plugin插件,通过Browse界面可以看到因为执行mvn clean而下载的maven-clean-plugin.jar:

注意:如果界面为空,表示没有下载,原因是之前下载过该插件到本地仓库,需要把本地仓库的maven-clean-plugin插件删除,我的本地仓库路径为D:\Reporsitory,所以需要删掉文件夹:D:\Reporsitory\org\apache\maven\plugins\maven-clean-plugin,然后重新构建即可。

配置宿主仓库

settings.xml增加如下配置:

<servers>
     <server>
        <id>nexus</id>
        <username>admin</username>
        <password>admin123</password>
    </server>
</servers>

配置pom.xml:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.nocoffee</groupId>
  <artifactId>coffee-api</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>coffee-api</name>
  <url>http://maven.apache.org</url>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  
  <distributionManagement>
        <repository>
        <id>nexus</id>
        <name>maven-releases</name>
        <url>http://localhost:8081/repository/maven-releases/</url>
        </repository>
        <snapshotRepository>
        <id>nexus</id>
        <name>maven-snapshots</name>
        <url>http://localhost:8081/repository/maven-snapshots/</url>
        </snapshotRepository>
   </distributionManagement>
</project>

执行mvn clean deploy将项目打包并发布到宿主仓库,构建成功后到Browse中maven-snapshots库查看(因为项目版本为0.0.1-SNAPSHOT,是带SNAPSHOT的快照版本):

maven-releases库

需要将项目版本改成发布版本,在pom.xml中 0.0.1-SNAPSHOT 去掉-SNAPSHOT,改为 0.0.1 。重新执行mvn clean deploy:

注意:maven-releases库默认不能重新发布,需要可重新发布则需要修改该仓库配置。
测试重新发布到maven-releases库,执行mvn clean deploy将会构建失败:

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.112 s
[INFO] Finished at: 2019-06-10T16:34:29+08:00
[INFO] Final Memory: 18M/164M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project coffee-api: Failed to deploy artifacts: Could not transfer artifact com.nocoffee:coffee-api:jar:0.0.1 from/to nexus (http://localhost:8081/repository/maven-releases/): Failed to transfer file: http://localhost:8081/repository/maven-releases/com/nocoffee/coffee-api/0.0.1/coffee-api-0.0.1.jar. Return code is: 400, ReasonPhrase: Repository does not allow updating assets: maven-releases. -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

将maven-releases库中Deployment pollcy改为Allow redeploy既可:





本文转自博客园,原文地址:https://www.cnblogs.com/seve/p/10982603.html