文件结构说明:
项目构建生命周期：
清理
编译
測试
打包
执行
部署
清理与编译
hello\pom.xml
POM:Project Object Model,项目对象模型
pom.xml与ant的build.xml类似
<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.demo.hello</groupId><artifactId>hello-world</artifactId><version>1.0.0-SNAPSHOT</version> <name>hello</name> </project>
说明:
modelVersion:指定当前POM模型的版本号,Maven2及Maven3仅仅能是4.0.0
groupId:项目组名称
artifactId:当前Maven项目在组中的唯一的id
version:版本号
hello\src\main\java下的Hello.java
package com.demo ; public class Hello {public void sayHi(){System.out.println("hello world");}public static void main(String [] args){new Hello().sayHi();} }执行清理及编译命令:
进入hello的目录路径,执行
mvn clean compile执行结果
查看target目录的内容
查看本地仓库
測试:
hello\pom.xml
<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.demo.hello</groupId><artifactId>hello-world</artifactId><version>1.0.0-SNAPSHOT</version> <name>hello</name><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.10</version><scope>test</scope></dependency></dependencies> </project>
dependencies:指明这个项目所须要的依赖包
hello\src\test\java\HelloTest.java
package com.demo;import org.junit.Test;public class HelloTest {@Testpublic void testHello(){new Hello().sayHi(); } }执行測试命令
mvn clean test
查看结果
查看本地仓库
打包
执行命令
mvn clean package
查看结果
执行
又一次改造pom.xml，增加插件
pom.xml
<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.demo.hello</groupId><artifactId>hello-world</artifactId><version>1.0.0-SNAPSHOT</version> <name>hello</name><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.10</version><scope>test</scope></dependency></dependencies><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><configuration><source>1.5</source><target>1.5</target></configuration></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-shade-plugin</artifactId><version>1.2.1</version><executions><execution><phase>package</phase><goals><goal>shade</goal></goals><configuration><transformers><transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer"><mainClass>com.demo.Hello</mainClass></transformer></transformers></configuration></execution></executions></plugin></plugins></build> </project>
又一次执行打包命令:
mvn clean package
执行完成后,进入hello/target下,执行命令
java -jar hello-world-1.0.0-SNAPSHOT.jar
查看结果:
安装到本地仓库，供其他项目依赖
执行命令
mvn clean install
查看本地仓库
