In-depth explanation of Maven setup and installation to help you quickly start project construction

Maven is a Java project management tool that can help developers build, deploy and manage projects more easily. This article will explain the installation and configuration of Maven in detail to help readers quickly get started and use Maven to build projects.

1. Maven installation

1. First of all, you need to ensure that the Java development environment (JDK) has been installed on your computer;
2. Go to the Maven official website (https: //maven.apache.org/download.cgi) Download the latest version of the Maven compressed package;
3. Extract the downloaded compressed package to the directory of your choice, for example C: pache-maven-3.6 .3;

4. Configure system environment variables:

   • Create a new system variable named MAVEN_HOME, the value is the Maven installation path (For example C: pache-maven-3.6.3);
   • Edit the system’s Path variable and add %MAVEN_HOME% in# at the end ##；
   To verify whether the Maven installation is successful, enter
   • mvn -version in the command line. If the Maven version information is displayed, the installation is successful.

Open the Maven configuration file
1. settings.xml, located in the Maven installation directory conf folder;
2. Configure the local warehouse path:

   <localRepository>D:maven-repo</localRepository>

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3. Configure the mirror source (can speed up downloading):

   <mirrors>
     <mirror>
       <id>nexus</id>
       <mirrorOf>central</mirrorOf>
       <url>http://your.nexus.repo/content/groups/public</url>
     </mirror>
   </mirrors>

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4. Configure proxy server (if necessary):

   <proxies>
     <proxy>
       <id>example-proxy</id>
       <active>true</active>
       <protocol>http</protocol>
       <host>proxy.example.com</host>
       <port>8080</port>
       <username>proxyuser</username>
       <password>somepassword</password>
       <nonProxyHosts>www.google.com|*.example.com</nonProxyHosts>
     </proxy>
   </proxies>

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1. Create A simple Maven project:

   Enter the following command on the command line:
   

   mvn archetype:generate -DgroupId=com.example -DartifactId=my-project -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false

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2. Build the project:

   Enter the directory where the project is located and enter the following command to build the project:
   

   mvn clean install

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3. Add dependencies:

   Add the required dependencies to the
   pom.xml file of the project, for example:

   <dependency>
     <groupId>org.springframework</groupId>
     <artifactId>spring-core</artifactId>
     <version>5.2.8.RELEASE</version>
   </dependency>

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4. Run the project:

   mvn exec:java -Dexec.mainClass="com.example.MyApp"

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