maven 構建多moudle archetype

1. 官方文檔地址 lhttp://maven.apache.org/guides/mini/guide-creating-archetypes.htm
   單看這個官方文檔，構建一個多moudle archetype還是有點無從下手的，因爲modules 怎麼定義沒詳細說
2. 再參考網上其他成功經驗https://blog.csdn.net/qxxiaohui/article/details/82013117 ，結合上面的官方文檔實驗成功
3. 下面列一下我的archetype， archetype目錄結構如下
   
   test-archetype 的pom文件， 我這裏參考了官方的寫法

<?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>com.sendinfo</groupId>
    <artifactId>test-archetype</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>maven-archetype</packaging>

    <build>
        <extensions>
            <extension>
                <groupId>org.apache.maven.archetype</groupId>
                <artifactId>archetype-packaging</artifactId>
                <version>3.1.1</version>
            </extension>
        </extensions>
    </build>
</project>

.archetype-metadata.xml 文件，記得一定要放在src/main/resources/META-INF/maven/ 目錄下， 我就是因爲用idea 創建目錄的時候將目錄創建爲META-INF.maven 在後面的mvn install的時候報錯The current project does not build an archetype.
我的archetype-metadata.xml 文件
其實這個文件可以參考官方文件的地址爲http://maven.apache.org/archetype/archetype-models/archetype-descriptor/archetype-descriptor.html 這也是我後來才發現的

<?xml version="1.0" encoding="UTF-8"?>
<archetype-descriptor name="my-archetype">
    <requiredProperties>
        <requiredProperty key="groupId">
            <defaultValue>com.sendinfo</defaultValue>
        </requiredProperty>
        <requiredProperty key="artifactId">
            <defaultValue>test.archetype</defaultValue>
        </requiredProperty>
        <requiredProperty key="package">
            <defaultValue>com.test.archetype</defaultValue>
        </requiredProperty>
    </requiredProperties>
    <fileSets>
        <fileSet filtered="true" encoding="UTF-8">
            <directory></directory>
            <includes>
                <include>*.xml</include>
                <include>*.properties</include>
            </includes>
        </fileSet>
    </fileSets>
    <modules>
        <module id="${rootArtifactId}-util" dir="__rootArtifactId__-util" name="${rootArtifactId}-util">
            <fileSets>
                <fileSet filtered="true" encoding="UTF-8" packaged="true">
                    <directory>src/main/java</directory>
                    <includes>
                        <include>**/*.java</include>
                        <include>**/*.txt</include>
                    </includes>
                </fileSet>
                <fileSet filtered="true" encoding="UTF-8" packaged="false">
                    <directory>src/main/resources</directory>
                    <includes>
                        <include>**/*.*</include>
                    </includes>
                </fileSet>
                <fileSet filtered="true" encoding="UTF-8" packaged="true">
                    <directory>src/test/java</directory>
                    <includes>
                        <include>**/*.java</include>
                        <include>**/*.txt</include>
                    </includes>
                </fileSet>
                <fileSet filtered="true" encoding="UTF-8" packaged="false">
                    <directory>src/test/resources</directory>
                    <includes>
                        <include>**/*.*</include>
                    </includes>
                </fileSet>
                <fileSet filtered="true" encoding="UTF-8">
                    <directory></directory>
                    <includes>
                        <include>pom.xml</include>
                    </includes>
                </fileSet>
            </fileSets>
        </module>
        <module id="${rootArtifactId}-dal" dir="__rootArtifactId__-dal" name="${rootArtifactId}-dal">
            <fileSets>
                <fileSet filtered="true" encoding="UTF-8" packaged="true">
                    <directory>src/main/java</directory>
                    <includes>
                        <include>**/*.java</include>
                        <include>**/*.txt</include>
                    </includes>
                </fileSet>
                <fileSet filtered="true" encoding="UTF-8" packaged="false">
                    <directory>src/main/resources</directory>
                    <includes>
                        <include>**/*.*</include>
                    </includes>
                </fileSet>
                <fileSet filtered="true" encoding="UTF-8" packaged="true">
                    <directory>src/test/java</directory>
                    <includes>
                        <include>**/*.java</include>
                        <include>**/*.txt</include>
                    </includes>
                </fileSet>
                <fileSet filtered="true" encoding="UTF-8" packaged="false">
                    <directory>src/test/resources</directory>
                    <includes>
                        <include>**/*.*</include>
                    </includes>
                </fileSet>
                <fileSet filtered="true" encoding="UTF-8">
                    <directory></directory>
                    <includes>
                        <include>pom.xml</include>
                    </includes>
                </fileSet>
            </fileSets>
        </module>
        <module id="${rootArtifactId}-core" dir="__rootArtifactId__-core" name="${rootArtifactId}-core">
            <fileSets>
                <fileSet filtered="true" encoding="UTF-8" packaged="true">
                    <directory>src/main/java</directory>
                    <includes>
                        <include>**/*.java</include>
                        <include>**/*.txt</include>
                    </includes>
                </fileSet>
                <fileSet filtered="true" encoding="UTF-8" packaged="false">
                    <directory>src/main/resources</directory>
                    <includes>
                        <include>**/*.*</include>
                    </includes>
                </fileSet>
                <fileSet filtered="true" encoding="UTF-8" packaged="true">
                    <directory>src/test/java</directory>
                    <includes>
                        <include>**/*.java</include>
                        <include>**/*.txt</include>
                    </includes>
                </fileSet>
                <fileSet filtered="true" encoding="UTF-8" packaged="false">
                    <directory>src/test/resources</directory>
                    <includes>
                        <include>**/*.*</include>
                    </includes>
                </fileSet>
                <fileSet filtered="true" encoding="UTF-8">
                    <directory></directory>
                    <includes>
                        <include>pom.xml</include>
                    </includes>
                </fileSet>
            </fileSets>
        </module>
    </modules>
</archetype-descriptor>

模板定義在src/main/resources/archetype-resources 目錄下，這個就根據你自己需求來定義，其中的變量的含義我參考了https://blog.csdn.net/qxxiaohui/article/details/82013117 的博客
這裏貼一個模板pom示例

<?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">
    <parent>
        <artifactId>${rootArtifactId}</artifactId>
        <groupId>${groupId}</groupId>
        <version>${version}</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>${rootArtifactId}-core</artifactId>
    <name>${rootArtifactId}-core</name>

    <dependencies>
        <dependency>
            <groupId>${groupId}</groupId>
            <artifactId>${rootArtifactId}-dal</artifactId>
            <version>${version}</version>
        </dependency>
    </dependencies>

</project>

模板包結構定義的注意項， java.xxx.xxxx.core 中間在使用模板時會用package變量連接，索引在使用archetype生成moudle時要指定package變量