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Maven 创建聚合项目流程，以SSM为例
视频地址：尚学堂：https://www.bjsxt.com/down/10214.html
1.项目架构展示
Manager
|--------manager-pojo(实体类 jar)
|--------manager-dao(jar)
|--------manager-service(jar)
|--------manager-web(war)
2.创建maven的聚合项目工程架构
1.New—Project 选择maven创建，选择maven-archetype-site创建聚合工程Manager
2.创建完毕后，开始创建moudle子模块，选中Manager，New-Moudle选择manven项目，选择maven-archetype-quickstart创建三个jar模块（manager-pojo, manager-dao, manager-service）
3.选中Manager，New-Moudle选择manven项目，选择maven-archetype-webapp创建manager-web模块。如图：
3.代码编写
1.在Manager的pom.xml中对依赖坐标做版本集中管理，代码如下
<?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>
<groupId>com.zzy</groupId>
<artifactId>manager</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<modules>
<module>manager-pojo</module>
<module>manager-dao</module>
<module>manager-service</module>
<module>manager-web</module>
</modules>
<name>Maven</name>
<!--对依赖坐标做版本集中管理-->
<properties>
<junit.version>4.12</junit.version>
<spring.version>4.1.3.RELEASE</spring.version>
<mybatis.version>3.2.8</mybatis.version>
<mybatis.spring.version>1.2.2</mybatis.spring.version>
<mysql.version>5.1.32</mysql.version>
<!--阿里云的druid 是一种链接池-->
<druid.version>1.0.9</druid.version>
<jstl.version>1.2</jstl.version>
<servlet.version>2.5</servlet.version>
<jsp.version>2.0</jsp.version>
<tomcat.versino>2.2</tomcat.versino>
</properties>
<dependencyManagement>
<dependencies>
<!--junit-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
</dependency>
<!--spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<!--用于做事务-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!--mybatis.spring-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis.spring.version}</version>
</dependency>
<!--mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!--druid-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
<!--jstl-->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
</dependency>
<!--servlet-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>${servlet.version}</version>
</dependency>
<!--jsp-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>${jsp.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<resources>
<!--配置资源拷贝插件-->
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
<resource>
<directory>src/main/resouces</directory>
<includes>
<include>**/*.xml</include>
<include>**/*.properties</include>
</includes>
</resource>
</resources>
<!--tomcat插件-->
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>${tomcat.versino}</version>
<!--<configuration>
<port>8080</port>
<path>/</path>
<uriEncoding>UTF-8</uriEncoding>
<server>tomcat7</server>
</configuration>-->
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
2.创建模块依赖，依赖关系：web----->service-----dao----->pojo
手动说明：web依赖于service service依赖于dao dao依赖于实体类pojo
在每个子模块下的pom创建依赖关系，以manager-dao为例，创建manager-pojo的依赖
<dependency>
<groupId>com.zzy</groupId>
<artifactId>manager-pojo</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>3.dao模块包括的坐标（mybatis----mybatis.spring----mysql----druid{driid是阿里云的一种连接池}）
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
</dependency>
<!--mybatis.spring-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
</dependency>
<!--mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!--druid-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
</dependency>4.service的坐标（坐标包括spring）
<!--spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<!--用于做事务-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
</dependency>5.web层坐标（junit----springMVC----servlet----jsp----tomcat）
<!--junit-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</dependency>
<!--springMVC-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
</dependency>
<!--servlet-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<!--jsp-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<scope>provided</scope>
</dependency>
<!--tomcat插件-->
<build>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<configuration>
<port>8080</port>
<path>/</path>
<uriEncoding>UTF-8</uriEncoding>
<server>tomcat7</server>
</configuration>
</plugin>
</plugins>
</build>