对各个模块进行讲解：
1、parent工程：
在parent的pom.xml下：
集中对版本进行控制
<!-- 集中定义依赖版本号 -->
<properties>
<spring.version>4.3.8.RELEASE</spring.version>
<spring-data-redis.version>1.8.7.RELEASE</spring-data-redis.version>
<mybatis.version>3.2.8</mybatis.version>
<mybatis.spring.version>1.2.2</mybatis.spring.version>
<mybatis.paginator.version>1.2.15</mybatis.paginator.version>
<mysql.version>5.1.41</mysql.version>
<slf4j.version>1.7.21</slf4j.version>
<jackson.version>2.7.4</jackson.version>
<!-- 连接池 阿里巴巴数据源 全世界最牛逼的data source 没有之一 -->
<druid.version>1.1.0</druid.version>
<httpclient.version>4.3.5</httpclient.version>
<commons.httpclient.version>3.1</commons.httpclient.version>
<jstl.version>1.2</jstl.version>
<servlet-api.version>2.5</servlet-api.version>
<jsp-api.version>2.0</jsp-api.version>
<joda-time.version>2.5</joda-time.version>
<commons-lang3.version>3.3.2</commons-lang3.version>
<commons-io.version>1.3.2</commons-io.version>
<commons-net.version>3.3</commons-net.version>
<pagehelper.version>4.1.3</pagehelper.version>
<commons-fileupload.version>1.3.1</commons-fileupload.version>
<jedis.version>2.9.0</jedis.version>
<apache-commons-pool2>2.4.2</apache-commons-pool2>
<log4j.version>1.2.16</log4j.version>
<zookeeper.version>3.4.11</zookeeper.version>
<curator.version>4.0.0</curator.version>
</properties>
<!-- 只定义依赖的版本，不会实际依赖 -->
<dependencyManagement>
<dependencies>
<!-- Mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
定义插件
<build>
<finalName>${project.artifactId}</finalName>
<plugins>
<!-- 资源文件拷贝插件 -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.7</version>
<configuration>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<!-- java编译插件 -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.2</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<!-- 配置Tomcat插件 -->
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
</plugin>
<!-- 配置sts插件 -->
<plugin>
<artifactId>maven-eclipse-plugin</artifactId>
<version>2.9</version>
</plugin>
</plugins>
</pluginManagement>
</build>
<!--子模块-->
<modules>
<module>zsl-maven-test-common</module>
<module>zsl-maven-test-pojo</module>
<module>zsl-maven-test-mapper</module>
<module>zsl-maven-test-service</module>
<module>zsl-maven-test-web</module>
</modules>Parent是聚会工程里所有的父类，因为依赖传递所以在parent定义的依赖会传递给他的子模块
2、common
一般第三方工具类依赖加在这里
例如：
<dependencies>
<!-- Apache工具组件 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
</dependency>
<dependency>
<groupId>commons-net</groupId>
<artifactId>commons-net</artifactId>
</dependency>
</dependencies>3、pojo
Pojo依赖于common，可以通过查看Maven Dependecies快速查看到它的依赖
它的pom.xml一般没什么可以加的依赖
3、mapper
Mapper加入pojo进行依赖，但是pojo加了common，因为依赖的传递所以这里可以看到加了common和pojo
它的pom.xml，因为是mapper，持久层的映射所以加的依赖多与数据库持久化相关
<dependencies>
<dependency>
<groupId>com.wxadmin</groupId>
<artifactId>wxd-videos-admin-pojo</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<!-- Mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
</dependency>
<dependency>
<groupId>com.github.miemiedev</groupId>
<artifactId>mybatis-paginator</artifactId>
</dependency>
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
</dependency>
<!-- MySql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!-- 连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
</dependency>
</dependencies>这里要重点讲解一下：
<build>
<resources>
<!-- 如果不加，那么打包的时候mapper文件不会被加载进来 -->
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>因为我们的资源文件是放在mapper下面的，如果在项目打包发布的时候，不加上，它打包的时候是不会自动把mapper下面的进行打包的，项目启动会报错，加上这里，会把配置文件和资源文件一起进行打包。
4、service
使用Spring框架一般要加入一下几种核心依赖
<dependencies>
<dependency>
<groupId>com.wxadmin</groupId>
<artifactId>wxd-videos-admin-mapper</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<!-- 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-webmvc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
</dependency>
</dependencies>5、web（控制层），war包
当你Run As -----》 Maven install后
就打包成功