Web Application - Maven Installation and Environment Configuration (Mac/Linux)

• Maven is a Java-based tool, so the first thing to do is to install the JDK.

• Maven 3.3 requires JDK 1.7 or above

• Maven 3.2 requires JDK 1.6 or above

• Maven 3.0/3.1 requires JDK 1.5 or above

The first step is to download the Maven package

Maven download address: http://maven.apache.org/download.cgi

Download and unzip locally

(I downloaded version 3.8.6 here)

The second step configures environment variables

Function: After setting the environment variable, the terminal and IDEA can automatically recognize it

Add the code to the .bash_profile file

Open the terminal (if the environment variable has been configured with .bash_profile), open the configuration file directly, the command is as follows:

 open -e .bash_profile

⚠️If you configure environment variables for the first time, you need to create a .bash_profile file in the user's root directory,

#apache-maven-3.8.6环境变量配置
MAVEN_HOME="/Users/wangjiabao/environment/apache-maven-3.8.6"
PATH=$PATH:$MAVEN_HOME/bin
export MAVEN_HOME
export PATH

After saving and exiting, execute source on the console to make the configuration file take effect

#source后配置文件才会生效
source .bash_profile
#检查是否source成功  ==> 可以echo出来对应的内容就是设置成功
echo $MAVEN_HOME

Step 3 Alibaba Cloud Mirror Configuration

• Purpose (Function): To speed up our download resources (it is recommended to use the mirror image of Alibaba Cloud in China).

Open apache-maven-3.8.6/conf/settings.xml

Add the following code block in the <mirrors></mirrors> tag

<mirror> 
  <id>nexus-aliyun</id> 
  <mirrorOf>*,!jeecg,!jeecg-snapshots</mirrorOf> 
  <name>Nexus aliyun</name>
    <url>http://maven.aliyun.com/nexus/content/groups/public</url>
</mirror>
<!--可以配多个镜像-->

Step 4  local warehouse configuration

• Function: Build a local warehouse ( LocalRepository ) so that you don’t have to go to the remote warehouse to download resources every time.

• The default local warehouse address is Default: ${user.home}/.m2/repository

• We manually create a folder to store resource packs for easy management!

The first step is to create a folder

It is recommended to create a folder maven-repository under /apache-maven-3.8.6/, namely /apache-maven-3.8.6/maven-repository, and copy the path of maven-repository.

The second step, add configuration

在settings文件中<localRepository>标签中添加maven-repository的路径，并填入配置文件中即可。

<localRepository>maven-repository的路径</localRepository>

第五步 配置IDEA的全局MAVAEN

不打开项目，在欢迎页面进入偏好设置

这里设置后，以后新建的项目都是默认配置这个版本的maven环境。