maven是基於JAVA平臺的自動化構建工具

和maven有同樣用途的工具還有以下：

make----ant----maven-----gradle

主要用途就是便於管理第三方jar包，方便jar包的下載，jar包之間版本的關系

maven的倉庫主要分為本地倉庫，中央倉庫和多個遠程鏡像倉庫，加載jar包時先從本地倉庫再到中央倉庫

maven的官網下載地址：http://maven.apache.org/download.cgi

下載二進制包，解壓後，配置環境變量，在cmd窗口中運行mvn -v 能查到安裝的版本，則表示安裝成功。

JavaProject的pom.xml文件說明

pom.xml文件的內容如下：

<?xml version="1.0" encoding="UTF-8"?>
<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>
    
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    
    <groupId>com.example</groupId>
    <artifactId>mybaitis</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>mybaitis</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.0.0</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.14</version>
        </dependency>


        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.5</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <!--添加mybatis generator maven插件-->
            <plugin>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-maven-plugin</artifactId>
            <version>1.3.5</version>
            <configuration>
                <!--generatorConfig.xml位置-->
                <configurationFile>src/main/resources/mybatis-generator/generatorConfig.xml</configurationFile>
                <verbose>true</verbose>
                <overwrite>true</overwrite>
            </configuration>
            <executions>
                <execution>
                    <id>Generate MyBatis Artifacts</id>
                    <goals>
                        <goal>generate</goal>
                    </goals>
                    <phase>generate-sources</phase>
                </execution>
            </executions>
            <!--此處必須添加mysql驅動包-->
            <dependencies>
        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
                <dependency>
                    <groupId>mysql</groupId>
                    <artifactId>mysql-connector-java</artifactId>
                    <version>8.0.14</version>
                </dependency>

            </dependencies>
            </plugin>
        </plugins>
    </build>

</project>

其中由groupId、artifactId和version唯一的確定了一個項目坐標

maven快速入門