详解使用Maven构建多模块项目(图文)
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:
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
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)
<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>
test-hd-foundation中的依赖
<?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>
test-hd-api中的依赖关系
<?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>
test-hd-resource中的依赖关系
<?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>
test-hd-service中的依赖关系
<?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>
test-hd-module中的依赖关系
<?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>
test-hd-www中的依赖关系
<?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>
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
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