镜像下载、域名解析、时间同步请点击 阿里云开源镜像站
本文介绍了在jenkins中maven的安装及配置（安装maven及jdk的方法），以及如何在jenkins中创建maven任务。
有三点需要注意的地方。
maven一定要安装在jenkins服务器上。maven安装之前要先安装jdk。建任务前，需要有git环境，并配置好用户名密码。
1. JDK的安装
centos7是自带OPEN JDK1.8的，但是不建议用，因为后面在jenkins中配置JDK目录的时候，自带的OPEN JDK无法识别，还是建议到官网下载安装。
1）到oracle官网下载JDK1.8文件，并上传至服务器解压缩，无需安装，直接使用。
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2）执行java文件，看下版本。
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2. maven的安装
1）到apache官网下载maven 包，并上传至服务器，无需安装，解压直接使用。
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2）配置maven文件settings.xml，在/app/maven-3.0.5/conf下。
主要修改2个地方，localRepository目录 以及 MIRRORS镜像的URL（国外的太慢，改为阿里云的）。
localRepository目录修改方式：
默认在m2下，我们自己新建一个目录/app/maven-3.0.5/mvnrepository，重新添加一行
<!-- localRepository
| The path to the local repository maven will use to store artifacts.
|
| Default: ~/.m2/repository
<localRepository>/path/to/local/repo</localRepository>
-->
<localRepository>/app/maven-3.0.5/mvnrepository</localRepository>
依赖包镜像的下载地址URL修改方式：
<!-- mirrors
| This is a list of mirrors to be used in downloading artifacts from remote repositories.
|
| It works like this: a POM may declare a repository to use in resolving certain artifacts.
| However, this repository may have problems with heavy traffic at times, so people have mirrored
| it to several places.
|
| That repository definition will have a unique id, so we can create a mirror reference for that
| repository, to be used as an alternate download site. The mirror site will be the preferred
| server for that repository.
|-->
<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>mirrorId</id>
<mirrorOf>repositoryId</mirrorOf>
<name>Human Readable Name for this Mirror.</name>
<url>http://my.repository.com/repo/path</url>
</mirror>
-->
<mirror>
<id>alimaven</id>
<name>aliyun maven</name>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
<mirrorOf>central</mirrorOf>
</mirror>
</mirrors>
3. 服务器系统环境变量的设置
1）编辑环境变量文件 vi /etc/profile
2）添加如下变量（根据自己的安装目录设置）
export JAVA_HOME=/app/jdk1.8.0_201
export MAVEN_HOME=/app/maven-3.0.5
export PATH=$JAVA_HOME/bin:$PATH:$MAVEN_HOME/bin
3）生效环境变量，source /etc/profile
4）验证环境变量是否生效。能正确显示版本、home路径即可。
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4.jenkins中的变量设置
1）设置“全局工具配置”
新增JDK设置，目录为上面讲的安装目录。（不能用系统自带的OPENJDK，不然会提示报错）
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新增MVN设置
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2）设置“系统配置”，增加环境变量，共3个，根据自己的安装目录填写。
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5. 在jenkins中新建maven项目
- 构建一个maven项目
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2）源码部分，根据自己的情况填写。
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3）PRE STEP部分，"ROOT POM"还是使用pom.xml文件，"Goals and options"根据maven的命令填写，具体可以看提示“Specifies the goals to execute, such as "clean install" or "deploy". This field can also accept any other command line options to Maven, such as "-e" or "-Djava.net.preferIPv4Stack=true".
”
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4）Post Steps我们先不填，先运行下看看是否可以编译成功。
5）运行任务，第一次运行会下载大量的java依赖包。
最后会出现success，说明编译成功。
在会在maven设localRepository目录下，生成war包。
Downloading: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/shared/maven-filtering/1.3/maven-filtering-1.3.jar
Downloaded: http://maven.aliyun.com/nexus/content/groups/public/xpp3/xpp3_min/1.1.4c/xpp3_min-1.1.4c.jar (25 KB at 52.2 KB/sec)
Downloading: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/shared/maven-mapping/1.0/maven-mapping-1.0.jar
Downloaded: http://maven.aliyun.com/nexus/content/groups/public/org/apache/commons/commons-compress/1.9/commons-compress-1.9.jar (370 KB at 564.8 KB/sec)
Downloaded: http://maven.aliyun.com/nexus/content/groups/public/com/thoughtworks/xstream/xstream/1.4.4/xstream-1.4.4.jar (473 KB at 723.0 KB/sec)
Downloaded: http://maven.aliyun.com/nexus/content/groups/public/org/codehaus/plexus/plexus-utils/3.0.20/plexus-utils-3.0.20.jar (238 KB at 686.2 KB/sec)
Downloaded: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/shared/maven-mapping/1.0/maven-mapping-1.0.jar (10 KB at 37.9 KB/sec)
Downloaded: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/shared/maven-filtering/1.3/maven-filtering-1.3.jar (50 KB at 127.8 KB/sec)
[INFO] Packaging webapp
[INFO] Assembling webapp [bbs] in [/var/lib/jenkins/workspace/maven_t1/target/bbs-5.7]
[INFO] Processing war project
[INFO] Copying webapp webResources [/var/lib/jenkins/workspace/maven_t1/lib] to [/var/lib/jenkins/workspace/maven_t1/target/bbs-5.7]
[INFO] Copying webapp resources [/var/lib/jenkins/workspace/maven_t1/src/main/webapp]
[INFO] Webapp assembled in [480 msecs]
[INFO] Building war: /var/lib/jenkins/workspace/maven_t1/target/bbs-5.7.war
[INFO]
[INFO] --- maven-install-plugin:2.3.1:install (default-install) @ bbs ---
Downloading: http://maven.aliyun.com/nexus/content/groups/public/org/codehaus/plexus/plexus-digest/1.0/plexus-digest-1.0.pom
Downloaded: http://maven.aliyun.com/nexus/content/groups/public/org/codehaus/plexus/plexus-digest/1.0/plexus-digest-1.0.pom (2 KB at 3.9 KB/sec)
Downloading: http://maven.aliyun.com/nexus/content/groups/public/org/codehaus/plexus/plexus-components/1.1.7/plexus-components-1.1.7.pom
Downloaded: http://maven.aliyun.com/nexus/content/groups/public/org/codehaus/plexus/plexus-components/1.1.7/plexus-components-1.1.7.pom (5 KB at 17.0 KB/sec)
Downloading: http://maven.aliyun.com/nexus/content/groups/public/org/codehaus/plexus/plexus/1.0.8/plexus-1.0.8.pom
Downloaded: http://maven.aliyun.com/nexus/content/groups/public/org/codehaus/plexus/plexus/1.0.8/plexus-1.0.8.pom (8 KB at 25.2 KB/sec)
Downloading: http://maven.aliyun.com/nexus/content/groups/public/org/codehaus/plexus/plexus-container-default/1.0-alpha-8/plexus-container-default-1.0-alpha-8.pom
Downloaded: http://maven.aliyun.com/nexus/content/groups/public/org/codehaus/plexus/plexus-container-default/1.0-alpha-8/plexus-container-default-1.0-alpha-8.pom (8 KB at 26.6 KB/sec)
Downloading: http://maven.aliyun.com/nexus/content/groups/public/org/codehaus/plexus/plexus-digest/1.0/plexus-digest-1.0.jar
Downloaded: http://maven.aliyun.com/nexus/content/groups/public/org/codehaus/plexus/plexus-digest/1.0/plexus-digest-1.0.jar (12 KB at 43.7 KB/sec)
[INFO] Installing /var/lib/jenkins/workspace/maven_t1/target/bbs-5.7.war to /app/maven-3.0.5/mvnrepository/bbs/bbs/5.7/bbs-5.7.war
[INFO] Installing /var/lib/jenkins/workspace/maven_t1/pom.xml to /app/maven-3.0.5/mvnrepository/bbs/bbs/5.7/bbs-5.7.pom
[INFO] [1m------------------------------------------------------------------------[m
[INFO] [1;32mBUILD SUCCESS[m
[INFO] [1m------------------------------------------------------------------------[m
[INFO] Total time: 39.307 s
[INFO] Finished at: 2022-04-13T23:04:19+08:00
[INFO] [1m------------------------------------------------------------------------[m
Waiting for Jenkins to finish collecting data
[JENKINS] Archiving /var/lib/jenkins/workspace/maven_t1/pom.xml to bbs/bbs/5.7/bbs-5.7.pom
[JENKINS] Archiving /var/lib/jenkins/workspace/maven_t1/target/bbs-5.7.war to bbs/bbs/5.7/bbs-5.7.war
channel stopped
Finished: SUCCESS
本文转自：https://blog.csdn.net/bjsunwei/article/details/124166661
