maven3创建多模块web项目

实现步骤

创建项目目录 
进入“工作空间”目录，创建名为treasure的文件夹，切换至控制台，进入该文件夹。

 
配置模块

生成各个模块 

maven-archetype-quickstart

默认的Archetype,基本内容包括：

• 一个包含junit依赖声明的pom.xml
• src/main/java主代码目录及一个名为App的类
• src/test/java测试代码目录及一个名为AppTest的测试用例

maven-archetype-webapp

一个最简单的Maven war项目模板，当需要快速创建一个Web应用的时候可以使用它。生成的项目内容包括：

• 一个packaging为war且带有junit依赖声明的pom.xml
• src/main/webapp/目录
• src/main/webapp/index.jsp文件
• src/main/webapp/WEB-INF/web.xml文件

该步骤会依次生成项目的各个模块，但是生成的模块并没有 创建依赖，只是最简单的并且符合maven 要求的项目结构的模块，关于什么是 maven 的标准项目结构，可以参考 maven 官方文档，或者《 maven 权威指南》。

# parent 模块创建

创建parent目录，创建pom文件。

<?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>org.sonatype.oss</groupId>
        <artifactId>oss-parent</artifactId>
        <version>7</version>
    </parent>
    <groupId>com.mirror</groupId>
    <artifactId>mirror-parent</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <name>mirror::parent</name>
    <packaging>pom</packaging>

    <properties>
        <!-- 主要依赖库的版本定义 -->
        <mirror.version>1.0.0-SNAPSHOT</mirror.version>
        <spring.version>4.2.1.RELEASE</spring.version>
        <mybatis.version>3.3.0</mybatis.version>

        <junit.version>4.12</junit.version>
        <!-- Plugin的属性 -->
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <java.version>1.7</java.version>
    </properties>

    <prerequisites>
        <maven>3.0.0</maven>
    </prerequisites>

    <!-- 设定除中央仓库 (repo1.maven.org/maven2/)外的其他仓库,按设定顺序进行查询，如有Nexus私服, 取消注释并指向正确的服务器地址 
    <repositories>
        <repository>
            <id>nexus</id>
            <name>Team Nexus Repository</name>
            <url>http://localhost:8081/nexus/content/groups/public</url>
        </repository>
    </repositories>-->

    <!-- 如有Nexus私服, 取消注释并指向正确的服务器地址
    <pluginRepositories>
        <pluginRepository>
            <id>nexus</id>
            <name>Team Nexus Repository</name>
            <url>http://localhost:8081/nexus/content/groups/public</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories> -->

    <!-- 预定义依赖项的version,scope与exclusions,子项目中只需定义groupId 与  artifactId 即可 -->
    <dependencyManagement>
        <dependencies>
                        
            <!-- spring-->
            <!-- 纯粹为了exclude commons-loging -->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-core</artifactId>
                <version>${spring.version}</version>
                <exclusions>
                    <exclusion>
                        <groupId>commons-logging</groupId>
                        <artifactId>commons-logging</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context-support</artifactId>
                <version>${spring.version}</version>
                <exclusions>
                    <exclusion>
                        <groupId>commons-logging</groupId>
                        <artifactId>commons-logging</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
            
            <!-- mybatis -->
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>${mybatis.version}</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>1.2.2</version>
            </dependency>
            
            <dependency>
            <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>${junit.version}</version>
        <scope>test</scope>
        </dependency>
        <dependency>
        <groupId>org.hamcrest</groupId>
        <artifactId>hamcrest-library</artifactId>
        <version>1.3</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
      <scope>test</scope>
     </dependency>
            </dependencies>
    </dependencyManagement>
</project>

#client 模块创建 ，修改pom文件

mvn archetype:generate -DgroupId=com.mirror -DartifactId=mirror-client -DarchetypeCatalog=internal -Dversion=1.0.0-SNAPSHOT

<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.mirror</groupId>  
  <artifactId>mirror-parent</artifactId>  
  <version>1.0.0-SNAPSHOT</version>
  <relativePath>../parent/</relativePath>
  </parent>
  <artifactId>mirror-client</artifactId>
  <packaging>jar</packaging>

  <name>mirror::mirror-client</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
    </dependency>
  </dependencies>
</project>

#utils模块创建 ，修改pom文件

mvn archetype:generate -DgroupId=com.mirror -DartifactId=mirror-utils -DarchetypeCatalog=internal -Dversion=1.0.0-SNAPSHOT 

<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.mirror</groupId>  
  <artifactId>mirror-parent</artifactId>  
  <version>1.0.0-SNAPSHOT</version>
  <relativePath>../parent/</relativePath>
  </parent>
  <artifactId>mirror-utils</artifactId>
  <packaging>jar</packaging>

  <name>mirror::mirror-utils</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
    </dependency>
  </dependencies>
</project>

#core 模块创建 ，修改pom文件

mvn archetype:generate -DgroupId=com.mirror -DartifactId=mirror-core -DarchetypeCatalog=internal -Dversion=1.0.0-SNAPSHOT

<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.mirror</groupId>  
  <artifactId>mirror-parent</artifactId>  
  <version>1.0.0-SNAPSHOT</version>
  <relativePath>../parent/</relativePath>
  </parent>
  <artifactId>mirror-core</artifactId>
  <packaging>jar</packaging>

  <name>mirror::mirror-core</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
    </dependency>
    
    <dependency>  
     <groupId>com.mirror</groupId>  
    <artifactId>mirror-utils</artifactId>  
     <version>1.0.0-SNAPSHOT</version>  
    </dependency>
  </dependencies>
  
</project>

#web-server 模块创建，修改pom和web.xml(升级版本)

mvn archetype:generate -DgroupId=com.mirror -DartifactId=mirror-web -DpackageName=com.mirror -DarchetypeArtifactId=maven-archetype-webapp -Dversion=1.0-SNAPSHOT

<?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.mirror</groupId>  
  <artifactId>mirror-parent</artifactId>  
  <version>1.0.0-SNAPSHOT</version>
  <relativePath>../parent/</relativePath>
  </parent>
  <artifactId>mirror-web</artifactId>
  <packaging>war</packaging>
  <name>mirror::mirror-webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>  
      <artifactId>junit</artifactId>  
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <exclusions>
            <exclusion>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context-support</artifactId>
    </dependency>
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
    </dependency>
  </dependencies>
  <build>
    <finalName>mirror-web</finalName>
    <plugins>
         <plugin>
             <groupId>org.mortbay.jetty</groupId>
             <artifactId>jetty-maven-plugin</artifactId>
             <version>8.1.8.v20121106</version>
             <configuration>
                 <webAppConfig>
                     <contextPath>/</contextPath>
                 </webAppConfig>
             </configuration>
         </plugin>

         <plugin>
             <groupId>org.apache.tomcat.maven</groupId>
             <artifactId>tomcat7-maven-plugin</artifactId>
             <version>2.2</version>
             <configuration>
                 <path>/${project.build.finalName}</path>
             </configuration>
         </plugin>
    </plugins>
  </build>
</project>

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

<web-app>
  <display-name>mirror-web</display-name>
</web-app>

 配置项目模块 
在treasure根目录下新建一个 pom.xml 配置文件，加入如下内容：

<?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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.mirror</groupId>
        <artifactId>mirror-parent</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>./parent/</relativePath>
    </parent>    
    <artifactId>mirror-modules</artifactId>
    <name>mirror::modules</name>
    <packaging>pom</packaging>

    <modules>
        <module>parent</module>
        <module>mirror-client</module>
        <module>mirror-utils</module>
        <module>mirror-core</module>
    <module>mirror-web</module>
  </modules>
</project>

修改配置完成之后，在treasure目录下，执行：

 mvn clean install
mvn eclipse:eclipse
生成 Eclipse 项目文件及包引用定义，注意，需确保定义Classpath Variables: M2_REPO，指向本地maven类库目录。

打开Eclipse ，导入工程即可。

控制端cd到mirror-web手动运行mvn -Djetty.port=80 jetty:run

或者配置对应的tomcat进行上传部署，mvn  tomcat:run