Exploring articles ------ Maven installation and configuration start

1. Download maven

Official website:https://maven.apache.org/

2. Configure Environment Variables

• bin directory under M2_HOME maven directory
• MAVEN_HOME maven directory
• Configuring% MAVEN_HOME in the path of the system% \ bin
  
  
  
  to test whether the installation was successful Maven

dos command View mvn -version

3. Configure Ali cloud images

<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>

4. Configure the local warehouse

Configuring warehouse address in just setting.xml in:<localRepository>D:\java\apache-maven-3.6.1\maven-repo</localRepository>

5. Maven in the IDEA

6. disposed in IDEA Tomcat

URL access content webapp is actually the default index.jsp in

7. pom file

Core configuration file

<?xml version="1.0" encoding="UTF-8"?>

<!--Maven版本和头文件-->
<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>

    <!--这里就是我们刚才配置的GAV-->
    <groupId>com.yy</groupId>
    <artifactId>javaweb-01-maven</artifactId>
    <version>1.0-SNAPSHOT</version>
    <!--Package：项目的打包方式
    jar：java应用
    war：JavaWeb应用
    -->
    <packaging>war</packaging>


    <!--配置-->
    <properties>
        <!--项目的默认构建编码-->
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <!--编码版本-->
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <!--项目依赖-->
    <dependencies>
        <!--具体依赖的jar包配置文件-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
        </dependency>
    </dependencies>

    <!--项目构建用的东西-->
    <build>
        <finalName>javaweb-01-maven</finalName>
        <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
            <plugins>
                <plugin>
                    <artifactId>maven-clean-plugin</artifactId>
                    <version>3.1.0</version>
                </plugin>
                <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
                <plugin>
                    <artifactId>maven-resources-plugin</artifactId>
                    <version>3.0.2</version>
                </plugin>
                <plugin>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.8.0</version>
                </plugin>
                <plugin>
                    <artifactId>maven-surefire-plugin</artifactId>
                    <version>2.22.1</version>
                </plugin>
                <plugin>
                    <artifactId>maven-war-plugin</artifactId>
                    <version>3.2.2</version>
                </plugin>
                <plugin>
                    <artifactId>maven-install-plugin</artifactId>
                    <version>2.5.2</version>
                </plugin>
                <plugin>
                    <artifactId>maven-deploy-plugin</artifactId>
                    <version>2.8.2</version>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>
</project>

In the build configuration of resources, the problem of our resources to prevent the export of failure

<build>
<resources>
    <resource>
        <directory>src/main/resources</directory>
        <includes>
            <include>**/*.properties</include>
            <include>**/*.xml</include>
        </includes>
        <filtering>true</filtering>
    </resource>
    <resource>
        <directory>src/main/java</directory>
        <includes>
            <include>**/*.properties</include>
            <include>**/*.xml</include>
        </includes>
        <filtering>true</filtering>
    </resource>
</resources>
</build>

8.maven warehouse address

https://mvnrepository.com/

9. In the startup configuration items, once and for all