一。Idea构建maven多模块项目
1。创建maven项目--创建父模块
【1】。File->New->Module...
【2】。点击next，填写：GroupId,ArtifactId和Version
注：ArtifactId即为项目名字。
【3】。点击next，添加参数archetypeCatalog=internal（不加该参数，在maven生成骨架时会非常慢）
注：
archetypeCatalog表示插件使用的archetype元数据，不加这个参数时默认为remote，local，即中央仓库archetype元数据，
由于中央仓库的archetype太多了所以导致很慢，指定internal来表示仅使用内部元数据。
【4】点击next，填写module name（模块名称）->finish
【5】。项目结构如下所示：
2。创建module子模块
【1】右击项目-》new Module..
【2】新建Module同1创建父模块。
修改点：
（1）。ArtifactId：ssm-web
（2）。Modual name：ssm-web
最终项目架构如下所示：
3。每个模块中依赖pom.xml配置
maven模块结构图：
---web-ssm
|--pom.xml(pom)
|--ssm-web
|--pom.xml(war)
|--ssm-service
|--pom.xml(jar)
|--ssm-dao
|--pom.xml(jar)
|--ssm-model
|--pom.xml(jar)
注意：括号中标识的是模块的打包（packaging类型）。父项目只能为pom，子项目根据包含内容具体考虑打jar/war包。
maven依赖传递性：
|-ssm-dao模块：负责与数据库交互，持久层。依赖于model层（ssm-model）
ssm-dao->依赖->ssm-model
|-ssm-service模块：负责业务逻辑处理，事务控制层。调用dao传递处理结果。依赖于dao层(ssm-dao)。
而dao依赖于model层。所以service依赖于model层(ssm-model)
ssm-service->依赖->ssm-dao->依赖->ssm-model
|-ssm-web模块：负责与客户端交互，控制层。主要为springmvc的controller类/struts的action类。
依赖于service层。依赖于dao层，依赖于model层。（依赖传递性）
ssm-web->依赖->ssm-service->依赖->ssm-dao->依赖->ssm-model
|-ssm-model模块：独立模块，不依赖于任何其他模块
上述：除非配置了特殊的依赖scope。否则依赖均具有传递性。
【1】。ssm-web子模块
1 <?xml version="1.0" encoding="UTF-8"?> 2 3 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 5 <parent> 6 <artifactId>web-ssm</artifactId> 7 <groupId>com.yufeng.web</groupId> 8 <version>1.0-SNAPSHOT</version> 9 </parent> 10 <modelVersion>4.0.0</modelVersion> 11 12 <groupId>com.yufeng.web</groupId> 13 <artifactId>ssm-web</artifactId> 14 <packaging>war</packaging> 15 16 <name>ssm-web Maven Webapp</name> 17 <!-- FIXME change it to the project's website --> 18 <url>http://www.example.com</url> 19 20 <properties> 21 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 22 <maven.compiler.source>1.7</maven.compiler.source> 23 <maven.compiler.target>1.7</maven.compiler.target> 24 </properties> 25 26 <dependencies> 27 <dependency> 28 <groupId>junit</groupId> 29 <artifactId>junit</artifactId> 30 <version>4.11</version> 31 <scope>test</scope> 32 </dependency> 33 <!-- web层添加对model的依赖--> 34 <dependency> 35 <groupId>com.yufeng.web</groupId> 36 <artifactId>ssm-model</artifactId> 37 <version>${project.version}</version> 38 </dependency> 39 <!-- web层添加对service的依赖--> 40 <dependency> 41 <groupId>com.yufeng.web</groupId> 42 <artifactId>ssm-service</artifactId> 43 <version>${project.version}</version> 44 </dependency> 45 <!-- web层添加对dao的依赖--> 46 <dependency> 47 <groupId>com.yufeng.web</groupId> 48 <artifactId>ssm-dao</artifactId> 49 <version>${project.version}</version> 50 </dependency> 51 </dependencies> 52 53 <build> 54 <finalName>ssm-web</finalName> 55 <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --> 56 <plugins> 57 <plugin> 58 <artifactId>maven-clean-plugin</artifactId> 59 <version>3.0.0</version> 60 </plugin> 61 <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> 62 <plugin> 63 <artifactId>maven-resources-plugin</artifactId> 64 <version>3.0.2</version> 65 </plugin> 66 <plugin> 67 <artifactId>maven-compiler-plugin</artifactId> 68 <version>3.7.0</version> 69 </plugin> 70 <plugin> 71 <artifactId>maven-surefire-plugin</artifactId> 72 <version>2.20.1</version> 73 </plugin> 74 <plugin> 75 <artifactId>maven-war-plugin</artifactId> 76 <version>3.2.0</version> 77 </plugin> 78 <plugin> 79 <artifactId>maven-install-plugin</artifactId> 80 <version>2.5.2</version> 81 </plugin> 82 <plugin> 83 <artifactId>maven-deploy-plugin</artifactId> 84 <version>2.8.2</version> 85 </plugin> 86 </plugins> 87 </pluginManagement> 88 </build> 89 </project>
【2】。ssm-service子模块
1 <?xml version="1.0" encoding="UTF-8"?> 2 3 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 5 <parent> 6 <artifactId>web-ssm</artifactId> 7 <groupId>com.yufeng.web</groupId> 8 <version>1.0-SNAPSHOT</version> 9 </parent> 10 <modelVersion>4.0.0</modelVersion> 11 12 <groupId>com.yufeng.web</groupId> 13 <artifactId>ssm-service</artifactId> 14 <packaging>jar</packaging> 15 16 <name>ssm-service Maven Webapp</name> 17 <!-- FIXME change it to the project's website --> 18 <url>http://www.example.com</url> 19 20 <properties> 21 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 22 <maven.compiler.source>1.7</maven.compiler.source> 23 <maven.compiler.target>1.7</maven.compiler.target> 24 </properties> 25 26 <dependencies> 27 <dependency> 28 <groupId>junit</groupId> 29 <artifactId>junit</artifactId> 30 <version>4.11</version> 31 <scope>test</scope> 32 </dependency> 33 <!-- service层添加对model的依赖--> 34 <dependency> 35 <groupId>com.yufeng.web</groupId> 36 <artifactId>ssm-model</artifactId> 37 <version>${project.version}</version> 38 </dependency> 39 <!-- service层添加对dao的依赖--> 40 <dependency> 41 <groupId>com.yufeng.web</groupId> 42 <artifactId>ssm-dao</artifactId> 43 <version>${project.version}</version> 44 </dependency> 45 </dependencies> 46 47 <build> 48 <finalName>ssm-service</finalName> 49 <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --> 50 <plugins> 51 <plugin> 52 <artifactId>maven-clean-plugin</artifactId> 53 <version>3.0.0</version> 54 </plugin> 55 <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> 56 <plugin> 57 <artifactId>maven-resources-plugin</artifactId> 58 <version>3.0.2</version> 59 </plugin> 60 <plugin> 61 <artifactId>maven-compiler-plugin</artifactId> 62 <version>3.7.0</version> 63 </plugin> 64 <plugin> 65 <artifactId>maven-surefire-plugin</artifactId> 66 <version>2.20.1</version> 67 </plugin> 68 <plugin> 69 <artifactId>maven-war-plugin</artifactId> 70 <version>3.2.0</version> 71 </plugin> 72 <plugin> 73 <artifactId>maven-install-plugin</artifactId> 74 <version>2.5.2</version> 75 </plugin> 76 <plugin> 77 <artifactId>maven-deploy-plugin</artifactId> 78 <version>2.8.2</version> 79 </plugin> 80 </plugins> 81 </pluginManagement> 82 </build> 83 </project>
【3】。ssm-dao子模块
1 <?xml version="1.0" encoding="UTF-8"?> 2 3 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 5 <parent> 6 <artifactId>web-ssm</artifactId> 7 <groupId>com.yufeng.web</groupId> 8 <version>1.0-SNAPSHOT</version> 9 </parent> 10 <modelVersion>4.0.0</modelVersion> 11 12 <groupId>com.yufeng.web</groupId> 13 <artifactId>ssm-dao</artifactId> 14 <packaging>jar</packaging> 15 16 <name>ssm-dao Maven Webapp</name> 17 <!-- FIXME change it to the project's website --> 18 <url>http://www.example.com</url> 19 20 <properties> 21 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 22 <maven.compiler.source>1.7</maven.compiler.source> 23 <maven.compiler.target>1.7</maven.compiler.target> 24 </properties> 25 26 <dependencies> 27 <dependency> 28 <groupId>junit</groupId> 29 <artifactId>junit</artifactId> 30 <version>4.11</version> 31 <scope>test</scope> 32 </dependency> 33 <!-- dao层添加对model的依赖--> 34 <dependency> 35 <groupId>com.yufeng.web</groupId> 36 <artifactId>ssm-model</artifactId> 37 <version>${project.version}</version> 38 </dependency> 39 </dependencies> 40 41 <build> 42 <finalName>ssm-dao</finalName> 43 <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --> 44 <plugins> 45 <plugin> 46 <artifactId>maven-clean-plugin</artifactId> 47 <version>3.0.0</version> 48 </plugin> 49 <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> 50 <plugin> 51 <artifactId>maven-resources-plugin</artifactId> 52 <version>3.0.2</version> 53 </plugin> 54 <plugin> 55 <artifactId>maven-compiler-plugin</artifactId> 56 <version>3.7.0</version> 57 </plugin> 58 <plugin> 59 <artifactId>maven-surefire-plugin</artifactId> 60 <version>2.20.1</version> 61 </plugin> 62 <plugin> 63 <artifactId>maven-war-plugin</artifactId> 64 <version>3.2.0</version> 65 </plugin> 66 <plugin> 67 <artifactId>maven-install-plugin</artifactId> 68 <version>2.5.2</version> 69 </plugin> 70 <plugin> 71 <artifactId>maven-deploy-plugin</artifactId> 72 <version>2.8.2</version> 73 </plugin> 74 </plugins> 75 </pluginManagement> 76 </build> 77 </project>
【4】。ssm-model子模块
1 <?xml version="1.0" encoding="UTF-8"?> 2 3 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 5 <parent> 6 <artifactId>web-ssm</artifactId> 7 <groupId>com.yufeng.web</groupId> 8 <version>1.0-SNAPSHOT</version> 9 </parent> 10 <modelVersion>4.0.0</modelVersion> 11 12 <groupId>com.yufeng.web</groupId> 13 <artifactId>ssm-model</artifactId> 14 <packaging>jar</packaging> 15 16 <name>ssm-model Maven Webapp</name> 17 <!-- FIXME change it to the project's website --> 18 <url>http://www.example.com</url> 19 20 <properties> 21 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 22 <maven.compiler.source>1.7</maven.compiler.source> 23 <maven.compiler.target>1.7</maven.compiler.target> 24 </properties> 25 26 <dependencies> 27 <dependency> 28 <groupId>junit</groupId> 29 <artifactId>junit</artifactId> 30 <version>4.11</version> 31 <scope>test</scope> 32 </dependency> 33 </dependencies> 34 35 <build> 36 <finalName>ssm-model</finalName> 37 <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --> 38 <plugins> 39 <plugin> 40 <artifactId>maven-clean-plugin</artifactId> 41 <version>3.0.0</version> 42 </plugin> 43 <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> 44 <plugin> 45 <artifactId>maven-resources-plugin</artifactId> 46 <version>3.0.2</version> 47 </plugin> 48 <plugin> 49 <artifactId>maven-compiler-plugin</artifactId> 50 <version>3.7.0</version> 51 </plugin> 52 <plugin> 53 <artifactId>maven-surefire-plugin</artifactId> 54 <version>2.20.1</version> 55 </plugin> 56 <plugin> 57 <artifactId>maven-war-plugin</artifactId> 58 <version>3.2.0</version> 59 </plugin> 60 <plugin> 61 <artifactId>maven-install-plugin</artifactId> 62 <version>2.5.2</version> 63 </plugin> 64 <plugin> 65 <artifactId>maven-deploy-plugin</artifactId> 66 <version>2.8.2</version> 67 </plugin> 68 </plugins> 69 </pluginManagement> 70 </build> 71 </project>
【5】。web-ssm父模块(聚合子模块modules)
1 <?xml version="1.0" encoding="UTF-8"?> 2 3 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 5 <modelVersion>4.0.0</modelVersion> 6 7 <groupId>com.yufeng.web</groupId> 8 <artifactId>web-ssm</artifactId> 9 <version>1.0-SNAPSHOT</version> 10 <!--注意：父模块的packaging是pom ,表示该工程为pom类型。子模块的packaging可以为jar/war--> 11 <packaging>pom</packaging> 12 13 <!-- maven聚合，聚合子模块。<module>配置的是子模块的artifactId唯一.--> 14 <modules> 15 <module>ssm-web</module> 16 <module>ssm-service</module> 17 <module>ssm-dao</module> 18 <module>ssm-model</module> 19 </modules> 20 21 <name>web-ssm Maven Webapp</name> 22 <!-- FIXME change it to the project's website --> 23 <url>http://www.example.com</url> 24 25 <properties> 26 <!-- 项目统一编码格式--> 27 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 28 <maven.compiler.source>1.7</maven.compiler.source> 29 <maven.compiler.target>1.7</maven.compiler.target> 30 </properties> 31 32 <dependencies> 33 <dependency> 34 <groupId>junit</groupId> 35 <artifactId>junit</artifactId> 36 <version>4.11</version> 37 <scope>test</scope> 38 </dependency> 39 </dependencies> 40 41 <build> 42 <finalName>web-ssm</finalName> 43 <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --> 44 <plugins> 45 <plugin> 46 <artifactId>maven-clean-plugin</artifactId> 47 <version>3.0.0</version> 48 </plugin> 49 <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> 50 <plugin> 51 <artifactId>maven-resources-plugin</artifactId> 52 <version>3.0.2</version> 53 </plugin> 54 <plugin> 55 <artifactId>maven-compiler-plugin</artifactId> 56 <version>3.7.0</version> 57 </plugin> 58 <plugin> 59 <artifactId>maven-surefire-plugin</artifactId> 60 <version>2.20.1</version> 61 </plugin> 62 <plugin> 63 <artifactId>maven-war-plugin</artifactId> 64 <version>3.2.0</version> 65 </plugin> 66 <plugin> 67 <artifactId>maven-install-plugin</artifactId> 68 <version>2.5.2</version> 69 </plugin> 70 <plugin> 71 <artifactId>maven-deploy-plugin</artifactId> 72 <version>2.8.2</version> 73 </plugin> 74 </plugins> 75 </pluginManagement> 76 </build> 77 </project>
上述：Maven多模块项目已经搭建完成。
下述：整合spring+springmvc+mybatis。
参考网址：http://www.imooc.com/article/19789