maven多模块项目,适用于一些比较大的项目，通过合理的模块拆分，实现代码的复用，便于维护和管理。尤其是一些开源框架，也是采用多模块的方式，提供插件集成，用户可以根据需要配置指定的模块。
项目结构如下：
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test-hd-parent (父级)
---pom.xml
---test-hd-api (第三方接口层)
----pom.xml
---test-hd-foundation (基础工具层)
----pom.xml
---test-hd-resource (资源层)
----pom.xml
---test-hd-service (逻辑业务层)
----pom.xml
---test-hd-modules (web层)
----pom.xml
---test-hd-www (web模块1)
----pom.xml
---test-hd-admin (web模块2)
----pom.xml
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创建一个父maven工程
新建一个maven项目，选择存储位置，并选择创建一个简单的maven工程
输入group id、artifact id、packaging，packaging选择pom包
生成父工程，pom.xml如下
删除工程中的src 目录
创建子模块
右击父工程名---》new---》project，然后选择新建一个maven module工程
设置子工程名以及父工程，再设置快速创建模式
得到子工程（test-hd-api，第三方接口层），设置编译的jdk
同理设置，子模块：test-hd-foundation(基础工具层)、test-hd-resource(资源层) 、test-hd-service(逻辑业务层)
新建test-hd-modules (web层)，选择创建一个a simple project，输入group id、artifact id、packaging，packaging选择pom包
创建web子模块
web子模块在建在test-hd-modules (web层)里面，右击test-hd-modules 工程名---》new---》project，然后选择新建一个maven module工程，设置子工程名以及父工程，选择新建web项目
配置maven web项目，参照：【maven】eclipse 使用maven创建java web项目
同理可以配置其他的web子模块 test-hd-admin(web模块2)
配置个模块的依赖
在parent项目pom.xml中建立依赖管理（dependencymanagement）
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<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.hd</groupid>
<artifactid>test-hd-parent</artifactid>
<version>0.0.1-snapshot</version>
<packaging>pom</packaging>
<modules>
<module>test-hd-api</module>
<module>test-hd-service</module>
<module>test-hd-resource</module>
<module>test-hd-foundation</module>
<module>test-hd-modules</module>
</modules>
<!-- maven依赖 -->
<dependencymanagement>
<dependencies>
<!-- hd -->
<dependency>
<groupid>com.hd</groupid>
<artifactid>test-hd-api</artifactid>
<version>0.0.1-snapshot</version>
</dependency>
<dependency>
<groupid>com.hd</groupid>
<artifactid>test-hd-service</artifactid>
<version>0.0.1-snapshot</version>
</dependency>
<dependency>
<groupid>com.hd</groupid>
<artifactid>test-hd-resource</artifactid>
<version>0.0.1-snapshot</version>
</dependency>
<dependency>
<groupid>com.hd</groupid>
<artifactid>test-hd-foundation</artifactid>
<version>0.0.1-snapshot</version>
</dependency>
<!-- servlet -->
<dependency>
<groupid>javax.servlet</groupid>
<artifactid>javax.servlet-api</artifactid>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupid>javax.servlet.jsp</groupid>
<artifactid>jsp-api</artifactid>
<version>2.2</version>
<scope>provided</scope>
</dependency>
<!-- jstl -->
<dependency>
<groupid>javax.servlet</groupid>
<artifactid>jstl</artifactid>
<version>1.2</version>
</dependency>
<dependency>
<groupid>taglibs</groupid>
<artifactid>standard</artifactid>
<version>1.1.2</version>
</dependency>
<dependency>
<groupid>junit</groupid>
<artifactid>junit</artifactid>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
</dependencymanagement>
</project>
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test-hd-foundation中的依赖
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<?xml version="1.0"?>
<project
xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance">
<modelversion>4.0.0</modelversion>
<parent>
<groupid>com.hd</groupid>
<artifactid>test-hd-parent</artifactid>
<version>0.0.1-snapshot</version>
</parent>
<artifactid>test-hd-foundation</artifactid>
<dependencies>
<!-- servlet -->
<dependency>
<groupid>javax.servlet</groupid>
<artifactid>jstl</artifactid>
</dependency>
<dependency>
<groupid>taglibs</groupid>
<artifactid>standard</artifactid>
</dependency>
<dependency>
<groupid>junit</groupid>
<artifactid>junit</artifactid>
</dependency>
</dependencies>
<build>
<plugins>
<!-- define the project compile level -->
<plugin>
<groupid>org.apache.maven.plugins</groupid>
<artifactid>maven-compiler-plugin</artifactid>
<version>2.3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
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test-hd-api中的依赖关系
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<?xml version="1.0"?>
<project
xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance">
<modelversion>4.0.0</modelversion>
<parent>
<groupid>com.hd</groupid>
<artifactid>test-hd-parent</artifactid>
<version>0.0.1-snapshot</version>
</parent>
<artifactid>test-hd-api</artifactid>
<dependencies>
<dependency>
<groupid>com.hd</groupid>
<artifactid>test-hd-foundation</artifactid>
</dependency>
<!-- servlet -->
<dependency>
<groupid>javax.servlet</groupid>
<artifactid>jstl</artifactid>
</dependency>
<dependency>
<groupid>taglibs</groupid>
<artifactid>standard</artifactid>
</dependency>
<dependency>
<groupid>junit</groupid>
<artifactid>junit</artifactid>
</dependency>
</dependencies>
<build>
<plugins>
<!-- define the project compile level -->
<plugin>
<groupid>org.apache.maven.plugins</groupid>
<artifactid>maven-compiler-plugin</artifactid>
<version>2.3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
<finalname>test-hd-api</finalname>
</build>
</project>
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test-hd-resource中的依赖关系
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<?xml version="1.0"?>
<project
xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance">
<modelversion>4.0.0</modelversion>
<parent>
<groupid>com.hd</groupid>
<artifactid>test-hd-parent</artifactid>
<version>0.0.1-snapshot</version>
</parent>
<artifactid>test-hd-resource</artifactid>
<dependencies>
<dependency>
<groupid>junit</groupid>
<artifactid>junit</artifactid>
</dependency>
</dependencies>
<build>
<plugins>
<!-- define the project compile level -->
<plugin>
<groupid>org.apache.maven.plugins</groupid>
<artifactid>maven-compiler-plugin</artifactid>
<version>2.3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
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test-hd-service中的依赖关系
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<?xml version="1.0"?>
<project
xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance">
<modelversion>4.0.0</modelversion>
<parent>
<groupid>com.hd</groupid>
<artifactid>test-hd-parent</artifactid>
<version>0.0.1-snapshot</version>
</parent>
<artifactid>test-hd-service</artifactid>
<dependencies>
<dependency>
<groupid>com.hd</groupid>
<artifactid>test-hd-foundation</artifactid>
</dependency>
<dependency>
<groupid>com.hd</groupid>
<artifactid>test-hd-api</artifactid>
</dependency>
<!-- servlet -->
<dependency>
<groupid>javax.servlet</groupid>
<artifactid>jstl</artifactid>
</dependency>
<dependency>
<groupid>taglibs</groupid>
<artifactid>standard</artifactid>
</dependency>
<dependency>
<groupid>junit</groupid>
<artifactid>junit</artifactid>
</dependency>
</dependencies>
<build>
<plugins>
<!-- define the project compile level -->
<plugin>
<groupid>org.apache.maven.plugins</groupid>
<artifactid>maven-compiler-plugin</artifactid>
<version>2.3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
<finalname>test-hd-service</finalname>
</build>
</project>
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test-hd-module中的依赖关系
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<?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>com.hd</groupid>
<artifactid>test-hd-parent</artifactid>
<version>0.0.1-snapshot</version>
</parent>
<artifactid>test-hd-modules</artifactid>
<packaging>pom</packaging>
<modules>
<module>test-hd-www</module>
<module>test-hd-admin</module>
</modules>
<dependencies>
<dependency>
<groupid>com.hd</groupid>
<artifactid>test-hd-foundation</artifactid>
</dependency>
<dependency>
<groupid>com.hd</groupid>
<artifactid>test-hd-service</artifactid>
</dependency>
<dependency>
<groupid>com.hd</groupid>
<artifactid>test-hd-api</artifactid>
</dependency>
<dependency>
<groupid>com.hd</groupid>
<artifactid>test-hd-resource</artifactid>
</dependency>
<!-- servlet -->
<dependency>
<groupid>javax.servlet</groupid>
<artifactid>jstl</artifactid>
</dependency>
<dependency>
<groupid>taglibs</groupid>
<artifactid>standard</artifactid>
</dependency>
<dependency>
<groupid>junit</groupid>
<artifactid>junit</artifactid>
</dependency>
</dependencies>
</project>
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test-hd-www中的依赖关系
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<?xml version="1.0"?>
<project
xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance">
<modelversion>4.0.0</modelversion>
<parent>
<groupid>com.hd</groupid>
<artifactid>test-hd-modules</artifactid>
<version>0.0.1-snapshot</version>
</parent>
<artifactid>test-hd-www</artifactid>
<packaging>war</packaging>
<build>
<plugins>
<!-- define the project compile level -->
<plugin>
<groupid>org.apache.maven.plugins</groupid>
<artifactid>maven-compiler-plugin</artifactid>
<version>2.3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
<finalname>test-hd-www</finalname>
</build>
</project>
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最后使用maven-update整个工程，右击父工程名--》maven--》update project
打包和发布
打包，右击父工程名 test-hd-parent---->run as--->maven install
打包web子工程，右击工程名test-hd-www--->run as ---> maven build...---> goals: clean package--->run
右击工程名test-hd-www，进行刷新，找到war包，放到tomcat的webapps中，启动tomcat，即可访问工程http://localhost:8080/test-hd-www
可以去tomcat下面webapps》test-hd-www》web-inf》lib中，看到引用的jar包
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://www.cnblogs.com/h--d/p/6001366.html