标签:模块 hello tor oid velocity mamicode stat plugins 自定义
maven是一个很好的代码构建工具,采用“约定优先于配置”的原则进行项目管理,相信很多的java开发者应该都了解maven并可能在工作当中都是通过maven来管理项目的,在创建的项目的时候,我们往往会使用maven内置的项目骨架也就是archetype来快速生成项目结构。但是在一个团队做开发的过程中,可能仅仅依靠maven预先提供的archetyp可能是不够的,团队之间协作有自己的定义方式,每个人的结构定义风格也不尽相同,在这样的背景下我们有必要去定义一个统一的代码骨架供团队使用,这样做的好处是当团队需要开始一个新项目的时候,可以利用自定义的maven骨架一键生成项目。
archetype是在maven-archetype-plugin插件执行generate目标的时候进行配置的,我们经常使用到maven的内嵌的骨架包括:maven-archetype-webapp、maven-archetype-quickstart。前者用来快速搭建一个web工程项目,后者用来快速搭建一个普通的java工程项目。
单模块项目的archetype脚手架项目的结构
上图中的各个文件详解:
1.beast-archetype/pom.xml内容如下
<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.thebeastshop</groupId> <artifactId>beast-archetype</artifactId> <version>1.1</version> <packaging>jar</packaging> <name>beast-archetype</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> <version>3.8.1</version> <scope>test</scope> </dependency> </dependencies> <build> <finalName>beast-archetype</finalName> </build> </project>
2.src/main/resources/archetype-resources/pom.xml内容如下:
<?xml version="1.0"?> <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>${groupId}</groupId> <artifactId>${artifactId}</artifactId> <version>${version}</version> <name>${artifactId}</name> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <artifactId>maven-deploy-plugin</artifactId> <configuration> <skip>true</skip> </configuration> </plugin> </plugins> <pluginManagement> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-archetype-plugin</artifactId> <version>2.2</version> <configuration> <source>1.7</source> <target>1.7</target> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-source-plugin</artifactId> <configuration> <encoding>UTF-8</encoding> </configuration> </plugin> </plugins> </pluginManagement> </build> </project>
其中:上面${}标识的变量都是通过maven中的命令行传进来的,如:mvn archetype:generate -DgroupId=com.thebeastshop
3.src/main/resources/META-INF/maven/archetype-metadata.xml内容如下:
<?xml version="1.0" encoding="UTF-8"?> <archetype-descriptor name="beast-archetype" xmlns="http://maven.apache.org/plugins/maven-archetype-plugin/archetype-descriptor/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://maven.apache.org/plugins/maven-archetype-plugin/archetype-descriptor/1.0.0 http://maven.apache.org/xsd/archetype-descriptor-1.0.0.xsd"> <requiredProperties> <requiredProperty key="package-name" /> </requiredProperties> <fileSets> <fileSet filtered="true" packaged="true" encoding="UTF-8"> <directory>src/main/java</directory> <includes> <include>**/*.java</include> </includes> </fileSet> <fileSet filtered="true" encoding="UTF-8"> <directory>src/main/resources</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet filtered="true" packaged="true" encoding="UTF-8"> <directory>src/test/java</directory> <includes> <include>**/*.java</include> </includes> </fileSet> <fileSet encoding="UTF-8"> <directory>src/test/resources</directory> <includes> <include>**/*.*</include> </includes> </fileSet> </fileSets> </archetype-descriptor>
说明:
4.src/main/resources/archetype-resources/src/main/java/Demo.java内容如下:
package ${package}; public class Demo{ public static void main( String[] args ) { System.out.println( "Hello My Archetype!" ); } }
5.这样我们就手写好了一个自定义的maven的archetype骨架项目,我们只需要通过mvn clean install 命令把该jar包安装到本地仓库,然后通过本地仓库中的该jar包来生成一个项目看看效果,使用如下命令:
mvn archetype:generate
-DgroupId=comthebeastshop
-DartifactId=beast-test
-Dpackage="com.thebeastshop.test"
-DarchetypeGroupId=com.thebeastshop
-DarchetypeArtifactId=beast-archetype -DarchetypeVersion=1.1 -X -DarchetypeCatalog=local
三、手写maven多module的项目骨架archetype
1.多模块骨架项目的项目结构
这跟单模块项目区别不大,但是有几个概念需要说明:
2.模板工程定义描述文件:META-INF/maven/archetype-metadata.xml
<?xml version="1.0" encoding="UTF-8"?> <archetype-descriptor name="beast-archetype" xmlns="http://maven.apache.org/plugins/maven-archetype-plugin/archetype-descriptor/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://maven.apache.org/plugins/maven-archetype-plugin/archetype-descriptor/1.0.0 http://maven.apache.org/xsd/archetype-descriptor-1.0.0.xsd"> <requiredProperties> <requiredProperty key="groupId"> <defaultValue>com.thebeastshop</defaultValue> </requiredProperty> <requiredProperty key="artifactId"> <defaultValue>test</defaultValue> </requiredProperty> <requiredProperty key="package"> <defaultValue>com.thebeastshop.test</defaultValue> </requiredProperty> </requiredProperties> <modules> <module id="${rootArtifactId}-api" name="${rootArtifactId}-api" dir="__rootArtifactId__-api"> <fileSets> <fileSet filtered="true" encoding="UTF-8" packaged="true"> <directory>src/main/java</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet filtered="true" encoding="UTF-8" packaged="true"> <directory>src/test/java</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet encoding="UTF-8"> <directory>src/main/resources</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet encoding="UTF-8"> <directory>src/test/resources</directory> <includes> <include>**/*.*</include> </includes> </fileSet> </fileSets> </module> <module id="${rootArtifactId}-core" name="${rootArtifactId}-core" dir="__rootArtifactId__-core"> <fileSets> <fileSet filtered="true" encoding="UTF-8" packaged="true"> <directory>src/main/java</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet filtered="true" encoding="UTF-8" packaged="true"> <directory>src/test/java</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet filtered="true" encoding="UTF-8"> <directory>src/main/resources</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet encoding="UTF-8"> <directory>src/test/resources</directory> <includes> <include>**/*.*</include> </includes> </fileSet> </fileSets> </module> <module id="${rootArtifactId}-dao" name="${rootArtifactId}-dao" dir="__rootArtifactId__-dao"> <fileSets> <fileSet filtered="true" encoding="UTF-8" packaged="true"> <directory>src/main/java</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet filtered="true" encoding="UTF-8" packaged="true"> <directory>src/test/java</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet filtered="true" encoding="UTF-8"> <directory>src/main/resources</directory> <includes> <include>**/*.*</include> <include>mapper</include> </includes> </fileSet> <fileSet encoding="UTF-8"> <directory>src/test/resources</directory> <includes> <include>**/*.*</include> </includes> </fileSet> </fileSets> </module> <module id="${rootArtifactId}-main" name="${rootArtifactId}-main" dir="__rootArtifactId__-main"> <fileSets> <fileSet filtered="true" encoding="UTF-8" packaged="true"> <directory>src/main/java</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet filtered="true" encoding="UTF-8" packaged="true"> <directory>src/test/java</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet filtered="true" encoding="UTF-8"> <directory>src/main/resources</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet encoding="UTF-8"> <directory>src/test/resources</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet encoding="UTF-8"> <directory>src/main/assembly</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet encoding="UTF-8"> <directory>src/main/bin</directory> <includes> <include>**/*.*</include> </includes> </fileSet> </fileSets> </module> <module id="${rootArtifactId}-mybatisGen" name="${rootArtifactId}-mybatisGen" dir="__rootArtifactId__-mybatisGen"> <fileSets> <fileSet filtered="true" encoding="UTF-8" packaged="true"> <directory>src/main/java</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet filtered="true" encoding="UTF-8" packaged="true"> <directory>src/test/java</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet encoding="UTF-8"> <directory>src/main/resources</directory> <includes> <include>**/*.*</include> </includes> </fileSet> <fileSet encoding="UTF-8"> <directory>src/test/resources</directory> <includes> <include>**/*.*</include> </includes> </fileSet> </fileSets> </module> </modules> </archetype-descriptor>
<requiredProperties> <requiredProperty key="groupId"> <defaultValue>com.thebeastshop</defaultValue> </requiredProperty> <requiredProperty key="artifactId"> <defaultValue>test</defaultValue> </requiredProperty> <requiredProperty key="package"> <defaultValue>com.thebeastshop.test</defaultValue> </requiredProperty> </requiredProperties>
这些属性可以在资源元文件里的任意一个文件里通过${var}来引用,所以的元文件最终都可以选择通过velocity引擎来执行替换后生成。
默认的属性有:groupId,artifactId,packeage,version等
<modules> <module id="${rootArtifactId}-api" name="${rootArtifactId}-api" dir="__rootArtifactId__-api"> ... </module> <module id="${rootArtifactId}-core" name="${rootArtifactId}-core" dir="__rootArtifactId__-core"> ... </module> <module id="${rootArtifactId}-dao" name="${rootArtifactId}-dao" dir="__rootArtifactId__-dao"> ... </module> <module id="${rootArtifactId}-main" name="${rootArtifactId}-main" dir="__rootArtifactId__-main"> ... </module> <module id="${rootArtifactId}-mybatisGen" name="${rootArtifactId}-mybatisGen" dir="__rootArtifactId__-mybatisGen"> ... </module> </modules>
module有三个属性,解释如下:
id :定义子模块工程的artifactId.
dir :子模块工程源文件在archetype-resources里对应的directory.
name :子模块的名字.
3.子模块pom.xml定义如下(以core模块为例):
<?xml version="1.0"?> <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.thebeastshop</groupId> <artifactId>${rootArtifactId}</artifactId> <version>${version}</version> </parent> <artifactId>${artifactId}</artifactId> <name>${artifactId}</name> <dependencies> <dependency> <groupId>com.thebeastshop</groupId> <artifactId>${rootArtifactId}-api</artifactId> <version>${api.version}</version> </dependency> <dependency> <groupId>com.thebeastshop</groupId> <artifactId>${rootArtifactId}-dao</artifactId> <version>${project.parent.version}</version> </dependency> </dependencies> <build> <plugins> <plugin> <artifactId>maven-deploy-plugin</artifactId> <configuration> <skip>true</skip> </configuration> </plugin> </plugins> </build> </project>
其中${rootArtifactId}就代表父项目的artifactId.
4.我们和单模块脚手架工程一样,通过mvn clean install命令把该脚手架项目安装到本地maven仓库,然后就可以使用该项目来快速生成新项目结构了,生成命令如下:
mvn archetype:generate
-DgroupId=com.thebeastshop
-DartifactId=ddd
-Dversion=1.0.0-SNAPSHOT
-DarchetypeGroupId=com.thebeastshop
-DarchetypeArtifactId=beast-archetype
-DarchetypeVersion=1.3-SNAPSHOT -X -DarchetypeCatalog=local
我们就会看到生成好的项目结构如下:
多模块项目脚手架源码:https://github.com/hafizzhang/beast-archetype
四、总结
在工作中,我们通常要有“偷懒”意识,通过摸索来开发出类似项目脚手架一样的工具来提升自己工作的效率。不能整天都是浑浑噩噩的过去,而且表面上看上去很难的东西实际上并不见得一定就如想象中的难。程序猿还是要有所追求,哈哈~
标签:模块 hello tor oid velocity mamicode stat plugins 自定义
原文地址:https://www.cnblogs.com/sidesky/p/11371878.html