maven是基于JAVA平台的自动化构建工具
和maven有同样用途的工具还有以下:
make----ant----maven-----gradle
主要用途就是便于管理第三方jar包,方便jar包的下载,jar包之间版本的关系
maven的仓库主要分为本地仓库,中央仓库和多个远程镜像仓库,加载jar包时先从本地仓库再到中央仓库
maven的官网下载地址:http://maven.apache.org/download.cgi
下载二进制包,解压后,配置环境变量,在cmd窗口中运行mvn -v 能查到安装的版本,则表示安装成功。
JavaProject的pom.xml文件说明
1、pom意思就是project object model。
2、pom.xml包含了项目构建的信息,包括项目的信息、项目的依赖等。
3、pom.xml文件是可以继承的,大型项目中,子模块的pom.xml一般都会继承于父模块的pom.xml
pom.xml文件的内容如下:
<?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> <!--此处必须添加mysql驱动包--> <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唯一的确定了一个项目坐标