Maven多模块构建实例

创建coffee-parent项目

New->Maven Project

创建coffee-web项目

右键coffee-parent项目->New->Project...

注意：需要在src/main/webapp下创建WEB-INF文件夹，以及在WEB-INF下创建web.xml。

创建coffee-api项目

右键coffee-parent项目->New->Project...
注意：前面步骤同coffee-web项目

项目结构：

pom.xml文件

coffee-parent项目的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>
  <groupId>com.coffee</groupId>
  <artifactId>coffee-parent</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>pom</packaging>
  <modules>
  	<module>coffee-web</module>
  	<module>coffee-api</module>
  </modules>
  
  <!-- 管理依赖，供子项目选择使用  -->
  <dependencyManagement>
  	<dependencies>
  		<dependency>
  			<groupId>com.coffee</groupId>
  			<artifactId>coffee-api</artifactId>
  			<version>0.0.1-SNAPSHOT</version>
  		</dependency>
  	</dependencies>
  </dependencyManagement>
  
  <build>
  	<!-- 配置使用jdk1.7编译，所有子项目都会继承此配置，如需配置为子项目可选继承，则需要配置到 pluginManagement下-->
  	<plugins>
  		<plugin>
 			<groupId>org.apache.maven.plugins</groupId>
 			<artifactId>maven-compiler-plugin</artifactId>
 			<version>3.8.1</version>
 			<configuration>
	        	<source>1.7</source>
	        	<target>1.7</target>
	        </configuration>
  		</plugin>
  	</plugins>
  </build>
</project>

coffee-web项目的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>
  <parent>
    <groupId>com.coffee</groupId>
    <artifactId>coffee-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>coffee-web</artifactId>
  <packaging>war</packaging>
  
  	<!-- coffee-web依赖coffee-api，无需配置version，使用父项目coffee-parent中配置的version-->
  	<dependencies>
  		<dependency>
  			<groupId>com.coffee</groupId>
  			<artifactId>coffee-api</artifactId>
  		</dependency>
  	</dependencies>
</project>

coffee-api项目的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>
  <parent>
    <groupId>com.coffee</groupId>
    <artifactId>coffee-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>coffee-api</artifactId>
</project>

构建

右键coffee-parent项目->Run As->Maven install

构建成功：

[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for coffee-parent 0.0.1-SNAPSHOT:
[INFO] 
[INFO] coffee-parent ...................................... SUCCESS [  0.754 s]
[INFO] coffee-api ......................................... SUCCESS [  2.085 s]
[INFO] coffee-web ......................................... SUCCESS [  0.888 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  3.980 s
[INFO] Finished at: 2019-06-03T21:44:43+08:00
[INFO] ------------------------------------------------------------------------