Maven

为什么要学习Maven

在javaweb中,需要使用大量的jar包,如何能够让一个东西帮我们配置这个jar包
Marven就是一个专门用来管理jar包的工具
Maven的核心思想:约定大于配置
- Maven会规定好如何编写java代码,如何编译代码,如何配置项目,如何打包项目等等

配置maven

在(官网)[https://maven.apache.org/download.cgi]下载maven
解压到某个文件夹
- 我这里使用 /usr/local/apache-maven-3.9.9
打开.zshrc配置文件
- open ~/.zshrc
添加配置

export M2_HOME=/usr/local/apache-maven-3.9.9
export PATH=$PATH:$M2_HOME/bin

export M2_HOME=/usr/local/apache-maven-3.9.9
export PATH=$PATH:$M2_HOME/bin

让其生效
- source ~/.zshrc
修改权限
- chmod a+x /usr/local/apache-maven-3.9.9
验证是否安装成功
- mvn -v
安装成功会显示

Apache Maven 3.9.9 (8e8579a9e76f7d015ee5ec7bfcdc97d260186937)
Maven home: /usr/local/apache-maven-3.9.9
Java version: 23.0.1, vendor: Oracle Corporation, runtime: /Users/zmx2321/Library/Java/JavaVirtualMachines/openjdk-23.0.1/Contents/Home
Default locale: zh_CN_#Hans, platform encoding: UTF-8
OS name: "mac os x", version: "15.1.1", arch: "aarch64", family: "mac"

Apache Maven 3.9.9 (8e8579a9e76f7d015ee5ec7bfcdc97d260186937)
Maven home: /usr/local/apache-maven-3.9.9
Java version: 23.0.1, vendor: Oracle Corporation, runtime: /Users/zmx2321/Library/Java/JavaVirtualMachines/openjdk-23.0.1/Contents/Home
Default locale: zh_CN_#Hans, platform encoding: UTF-8
OS name: "mac os x", version: "15.1.1", arch: "aarch64", family: "mac"

修改setting文件
- open /usr/local/apache-maven-3.9.9/conf/settings.xml
设置本地数据仓库位置
- <localRepository>/usr/local/apache-maven-3.9.9/repo</localRepository>
为了下载方便，设置阿里云下载，即改为将节点mirror修改为如下内容

<mirror>
      <id>alimaven</id>
      <mirrorOf>central</mirrorOf>
      <name>aliyun maven</name>
      <url>https://maven.aliyun.com/repository/public</url>
</mirror>
<mirror>
      <id>nexus-aliyun</id>
      <mirrorOf>*,!jeecg,!jeecg-snapshots</mirrorOf>
      <name>Nexus aliyun</name>
      <url>https://maven.aliyun.com/nexus/content/groups/public</url>
</mirror>

<mirror>
      <id>alimaven</id>
      <mirrorOf>central</mirrorOf>
      <name>aliyun maven</name>
      <url>https://maven.aliyun.com/repository/public</url>
</mirror>
<mirror>
      <id>nexus-aliyun</id>
      <mirrorOf>*,!jeecg,!jeecg-snapshots</mirrorOf>
      <name>Nexus aliyun</name>
      <url>https://maven.aliyun.com/nexus/content/groups/public</url>
</mirror>

在idea中使用maven

创建maven项目

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