maven管理多模块系统
1.创建mydemo项目
cd d:\mywork
mvn archetype:create -DgroupId=com.example.mydemo -DartifactId=mydemo
生成mydemo目录，删除该目录下src目录，修改pom.xml，将packaging值修改为：
<packaging>pom</packaging>
2. 然后分别创建mydemo-core、mydemo-web两个模块
cd mydemo
mvn archetype:create -DgroupId=www.example.mydemo.core -DartifactId=mydemo-core
mvn archetype:create -DgroupId=www.example.mydemo.web -DartifactId=mydemo-web -DarchetypeArtifactId=maven-archetype-webapp
3. 修改d:\myworkpom.xml文件，添加
<modules>
<module>mydemo-core</module>
<module>mydemo-web</module>
</modules>
4. 分别在mydemo-core和mydemo-web目录下的pom.xml文件中添加：
<parent>
<groupId>cn.webwork.mydemo</groupId>
<artifactId>mydemo</artifactId>
<version>1.0-SNAPSHOT</version>
</parent>
5. 然后在d:\mywork\mydemo-webpom.xml中添加依赖 mydemo-core包的信息，如下：
<dependency>
<groupId>cn.webwork.mydemo.core</groupId>
<artifactId>mydemo-core</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
关于pom.xml配置文件的详细情况，请参考：
Project Setting:http://maven.apache.org/maven-model/maven.html
Introduction to POM:http://maven.apache.org/guides/introduction/introduction-to-the-pom.html
6. 创建完成后，就会分别生成两个目录，然后分别对其生成相应的eclipse工程文件，方法为：
cd mydemo-core
mvn eclipse:eclipse
cd ..
cd mydemo-web
mvn eclipse:eclipse -DdownloadSource=true -Dwtpversion=1.0 (指定wtpversion属性，用于生成wtp的工程文件)
创建完成这两个eclipse工程文件后，就可以在eclipse中打开了。
7. 回到 d:mywork目录下，执行mvn compile 就可以对这两个文件进行编译,还有mvn install ,mvn package等命令。
mydemo文件下载：
http://project.livedoor.cn/~roger/mydemo.zip
关于mvn命令：
在上面的过程中，大家看到诸如 mvn archetype:create / mvn eclipse:eclipse等这些命令，如何查询这些命令更多帮助信息？
请参考：http://maven.apache.org/plugins/index.html
其实象archetype:create eclipse:eclipse等都是maven的插件，默认安装的时候，这些插件都已经安装，还有很多第三方的插件，
具体使用方式，都可以从上面的地址中查到。
如，site插件， Generate a site for the current project
当你执行mvn site的时候，就会自动生成一个web site，用于展示你的项目信息。
POM.XML样例：
1. 完整项目pom.xml
<?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>de.codecentric</groupId> <artifactId>movie-database</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>pom</packaging> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.2.0.RELEASE</version> </parent> <name>movie-database</name> <description></description> <modules> <module>movie-database-actors</module> <module>movie-database-commons</module> <module>movie-database-movies</module> <module>movie-database-navigation</module> <module>movie-database-security</module> <module>movie-database-shop-rest</module> <module>movie-database-monitoring</module> </modules> <dependencyManagement> <dependencies> <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-starter-admin-client</artifactId> <version>1.1.1</version> </dependency> <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-server</artifactId> <version>1.1.1</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <scope>test</scope> </dependency> <dependency> <groupId>org.hamcrest</groupId> <artifactId>hamcrest-all</artifactId> <version>1.3</version> <scope>test</scope> </dependency> <dependency> <groupId>org.mockito</groupId> <artifactId>mockito-all</artifactId> <version>2.0.2-beta</version> <scope>test</scope> </dependency> </dependencies> </dependencyManagement> </project>
2. 子模块样例pom.xml
<?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>de.codecentric</groupId> <artifactId>movie-database</artifactId> <version>0.0.1-SNAPSHOT</version> </parent> <artifactId>movie-database-movies</artifactId> <packaging>jar</packaging> <name>movie-database-movies</name> <description></description> <dependencies> <dependency> <groupId>de.codecentric</groupId> <artifactId>movie-database-commons</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> <dependency> <groupId>de.codecentric</groupId> <artifactId>movie-database-security</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-starter-admin-client</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.webjars</groupId> <artifactId>bootstrap</artifactId> <version>2.2.1</version> </dependency> </dependencies> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <start-class>de.codecentric.MoviesApplication</start-class> <java.version>1.7</java.version> </properties> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>