多个maven项目实现统一管理， maven 插件jar继承自父的maven项目。对maven中jar的版本进行管理。
1、创建一个项目来管理多个maven项目
new ----maven Project
勾选 Create a simple project(skip archetype selection)
next :填写项目信息， packaging 选 pom 。
创建完成后项目目录结构如下：
编辑 pom.xml配置文件
1、maven 聚合： 统一管理多个maven模块项目，统一执行编译 ,清理，安装
需要配置： <modules> </modules> 来管理多个maven项目， （配置完成后，直接点击 此项目的pom.xml 文件右键运行，即可使管理的多个maven项目同时maven install、maven clean 简化了操作）
<!-- (maven的聚合：) 统一管理多个maven模块项目，统一执行编译 ,清理，安装 -->
<modules>
<!-- 管理处在同一级目录的项目，先回到父目录再找需要管理的目录 -->
<module>../dao</module>
<module>../service</module>
</modules>
2、dao 、service 、controller 项目中 引入的maven jar 统一配置到 extendsagg项目中， 再 dao 、servcie 、controller 中 配置 <parent></parent> 可简化自身项目的pom.xml配置，引入jar的版本也可以统一继承自父项目。
<!-- maven继承自父项目 -->
<parent>
<groupId>com.inspur.smvc</groupId>
<artifactId>extendsagg</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../extendsagg/pom.xml</relativePath>
</parent>
<!-- 本项目信息 继承父项目 可简化-->
<artifactId>controller</artifactId>
<packaging>war</packaging> <!-- 添加Spring支持 继承父项目 可简化版-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
</dependency>
3、maven 父项目 extendsagg 项目中pom.xml 中 jar 信息 的版本号 进行统一设置。
<!-- 各个 maven插件 引入的jar的版本统一管理 -->
<properties>
<spring.version>4.1.7.RELEASE</spring.version>
<log4j.version>1.2.17</log4j.version>
<junit.version>4.12</junit.version>
</properties> <!-- https://mvnrepository.com/artifact/log4j/log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency> <!-- spring start-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
controller maven模块的pom.xml
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<!-- maven继承自父项目 -->
<parent>
<groupId>com.inspur.smvc</groupId>
<artifactId>extendsagg</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../extendsagg/pom.xml</relativePath>
</parent>
<!-- 本项目信息 -->
<artifactId>controller</artifactId>
<packaging>war</packaging> <!-- <name>controller Maven Webapp</name> -->
<!-- <url>http://maven.apache.org</url> --> <dependencies> <!-- 引入service -->
<dependency>
<groupId>com.inspur.smvc</groupId>
<artifactId>service</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency> <!-- https://mvnrepository.com/artifact/javax.servlet.jsp.jstl/jstl -->
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl</artifactId>
</dependency> <!-- https://mvnrepository.com/artifact/javax.servlet.jsp/javax.servlet.jsp-api -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<scope>provided</scope>
</dependency> <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency> <!-- 添加Spring支持 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency> <dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>controller</finalName>
</build>
</project>
dao maven模块的pom.xml
<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> <!-- maven继承自父项目 -->
<parent>
<groupId>com.inspur.smvc</groupId>
<artifactId>extendsagg</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../extendsagg/pom.xml</relativePath>
</parent>
<!-- 本项目信息 -->
<artifactId>dao</artifactId>
<packaging>jar</packaging>
<!-- 注释
<name>dao</name>
<url>http://maven.apache.org</url>
--> <!-- <build> -->
<!-- <resources> -->
<!-- 编译之后包含xml -->
<!-- <resource> -->
<!-- <directory>src/main/java</directory> -->
<!-- <includes> -->
<!-- <include>**/*.xml</include> -->
<!-- </includes> -->
<!-- <filtering>true</filtering> -->
<!-- </resource> -->
<!-- 编译之后包含xml -->
<!-- <resource> -->
<!-- <directory>src/main/resources</directory> -->
<!-- <includes> -->
<!-- <include>*.xml</include> -->
<!-- </includes> -->
<!-- <filtering>true</filtering> -->
<!-- </resource> -->
<!-- </resources> -->
<!-- </build> --> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties> <dependencies> <!-- https://mvnrepository.com/artifact/log4j/log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</dependency> <!-- https://mvnrepository.com/artifact/oracle/ojdbc -->
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version>11.2.0</version> </dependency> <!-- <dependency> -->
<!-- <groupId>commons-dbcp</groupId> -->
<!-- <artifactId>commons-dbcp</artifactId> -->
<!-- <version>1.2.2</version> -->
<!-- </dependency> --> <!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
</dependency>
<!-- junit4.12 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>
service maven 模块的pom.xml
<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> <!-- maven继承自父项目 -->
<parent>
<groupId>com.inspur.smvc</groupId>
<artifactId>extendsagg</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../extendsagg/pom.xml</relativePath>
</parent> <!-- 本项目的maven插件信息 -->
<artifactId>service</artifactId>
<packaging>jar</packaging> <!-- <name>service</name> -->
<!-- <url>http://maven.apache.org</url> --> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties> <dependencies> <!-- 依赖 dao -->
<dependency>
<groupId>com.inspur.smvc</groupId>
<artifactId>dao</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency> <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
</dependency> <!-- spring start-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency> <!-- spring end --> <dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>
extendsagg maven 父项目统一管理 pom.xml
<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.inspur.smvc</groupId>
<artifactId>extendsagg</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging> <!-- (maven的聚合：) 统一管理多个maven模块项目，统一执行编译 ,清理，安装 -->
<modules>
<!-- 管理处在同一级目录的项目，先回到父目录再找需要管理的目录 -->
<module>../dao</module>
<module>../service</module>
</modules> <!-- 各个 maven插件 引入的jar的版本统一管理 -->
<properties>
<spring.version>4.1.7.RELEASE</spring.version>
<log4j.version>1.2.17</log4j.version>
<junit.version>4.12</junit.version>
</properties> <dependencyManagement>
<dependencies>
<!-- dao start -->
<!-- https://mvnrepository.com/artifact/log4j/log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency> <!-- https://mvnrepository.com/artifact/oracle/ojdbc -->
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version>11.2.0</version> </dependency> <!-- <dependency> -->
<!-- <groupId>commons-dbcp</groupId> -->
<!-- <artifactId>commons-dbcp</artifactId> -->
<!-- <version>1.2.2</version> -->
<!-- </dependency> --> <!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<!-- junit4.12 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!-- dao end --> <!-- service start -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.2</version>
</dependency> <!-- spring start-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</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-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency> <!-- service end --> <!-- controller start -->
<!-- https://mvnrepository.com/artifact/javax.servlet.jsp.jstl/jstl -->
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency> <!-- https://mvnrepository.com/artifact/javax.servlet.jsp/javax.servlet.jsp-api -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency> <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope>
</dependency> <!-- controller end --> </dependencies>
</dependencyManagement> </project>
pom.xml中
scope 选项 ：
Compile（默认） 编译 依赖范围 ：编译、测试、运行都有效；
Test 测试 依赖范围 ：仅测试有效；例如 JUnit；
Provided 已提供 依赖范围 ： 编译，测试有效，运行时无效。例如 servlet-api。
System 系统 依赖范围 ： 使用system范围的依赖必须通过systemPath 指定依赖文件的路径。
Import 导入 依赖范围 ： 使用dependencyManagement时候，可以导入依赖配置。