Maven項目模板
Maven提供用戶,使用原型的概念,不同類型的項目模板(以數字614)是一個非常大的列表。 Maven幫助用戶快速開始使用以下命令創建新的Java項目
mvn archetype:generate
什麼是原型?
原型是一個Maven插件,其任務是創建一個項目結構按照其模板。我們將使用快速啟動原型插件在這裡創建一個簡單的Java應用程序。
使用項目模板
讓我們打開命令控製台,進入到C:> MVN目錄,然後執行以下命令mvn命令
C:MVN>mvn archetype:generate
Maven會開始處理,並會要求選擇所需的原型
INFO] Scanning for projects... [INFO] Searching repository for plugin with prefix: 'archetype'. [INFO] ------------------------------------------------------------------- [INFO] Building Maven Default Project [INFO] task-segment: [archetype:generate] (aggregator-style) [INFO] ------------------------------------------------------------------- [INFO] Preparing archetype:generate ... 600: remote -> org.trailsframework:trails-archetype (-) 601: remote -> org.trailsframework:trails-secure-archetype (-) 602: remote -> org.tynamo:tynamo-archetype (-) 603: remote -> org.wicketstuff.scala:wicket-scala-archetype (-) 604: remote -> org.wicketstuff.scala:wicketstuff-scala-archetype Basic setup for a project that combines Scala and Wicket, depending on the Wicket-Scala project. Includes an example Specs test.) 605: remote -> org.wikbook:wikbook.archetype (-) 606: remote -> org.xaloon.archetype:xaloon-archetype-wicket-jpa-glassfish (-) 607: remote -> org.xaloon.archetype:xaloon-archetype-wicket-jpa-spring (-) 608: remote -> org.xwiki.commons:xwiki-commons-component-archetype (Make it easy to create a maven project for creating XWiki Components.) 609: remote -> org.xwiki.rendering:xwiki-rendering-archetype-macro (Make it easy to create a maven project for creating XWiki Rendering Macros.) 610: remote -> org.zkoss:zk-archetype-component (The ZK Component archetype) 611: remote -> org.zkoss:zk-archetype-webapp (The ZK wepapp archetype) 612: remote -> ru.circumflex:circumflex-archetype (-) 613: remote -> se.vgregion.javg.maven.archetypes:javg-minimal-archetype (-) 614: remote -> sk.seges.sesam:sesam-annotation-archetype (-) Choose a number or apply filter (format: [groupId:]artifactId, case sensitive contains): 203:
按Enter鍵選擇默認選項(203:Maven原型 - 快速入門)
Maven會要求原型的特定版本
Choose org.apache.maven.archetypes:maven-archetype-quickstart version: 1: 1.0-alpha-1 2: 1.0-alpha-2 3: 1.0-alpha-3 4: 1.0-alpha-4 5: 1.0 6: 1.1 Choose a number: 6:
按Enter鍵選擇默認選項(6:Maven原型 - 快速入門:1.1)
Maven會要求項目的細節。輸入項目細節的要求。按回車,如果提供的默認值。您可以通過輸入自己的值覆蓋它們。
Define value for property 'groupId': : com.companyname.insurance Define value for property 'artifactId': : health Define value for property 'version': 1.0-SNAPSHOT: Define value for property 'package': com.companyname.insurance:
Maven會要求項目的細節確認。按回車鍵或按Y
Confirm properties configuration: groupId: com.companyname.insurance artifactId: health version: 1.0-SNAPSHOT package: com.companyname.insurance Y:
現在,Maven將開始創建項目結構,並會顯示如下內容:
[INFO] ----------------------------------------------------------------------- [INFO] Using following parameters for creating project from Old (1.x) Archetype: maven-archetype-quickstart:1.1 [INFO] ----------------------------------------------------------------------- [INFO] Parameter: groupId, Value: com.companyname.insurance [INFO] Parameter: packageName, Value: com.companyname.insurance [INFO] Parameter: package, Value: com.companyname.insurance [INFO] Parameter: artifactId, Value: health [INFO] Parameter: basedir, Value: C:MVN [INFO] Parameter: version, Value: 1.0-SNAPSHOT [INFO] project created from Old (1.x) Archetype in dir: C:MVNhealth [INFO] ----------------------------------------------------------------------- [INFO] BUILD SUCCESSFUL [INFO] ----------------------------------------------------------------------- [INFO] Total time: 4 minutes 12 seconds [INFO] Finished at: Fri Jul 13 11:10:12 IST 2012 [INFO] Final Memory: 20M/90M [INFO] -----------------------------------------------------------------------
創建項目
現在轉到C:> MVN目錄。會看到一個java應用程序項目創建了這是在創建項目時給出 artifactId 命名為:health 。 Maven將創建一個標準的目錄布局如下圖所示的項目:
創建的pom.xml
Maven生成如下所列項目中的 pom.xml 文件:
<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.companyname.insurance</groupId> <artifactId>health</artifactId> <version>1.0-SNAPSHOT</version> <packaging>jar</packaging> <name>health</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> </project>
創建App.java
Maven 示例生成Java源文件,App.java下麵列出項目:
位置: C: > MVN > health > src > main > java > com > companyname > insurance > App.java
package com.companyname.insurance; /** * Hello world! * */ public class App { public static void main( String[] args ) { System.out.println( "Hello World!" ); } }
創建AppTest.java
Maven的樣本生成Java源測試文件,AppTest.java下麵列出的項目:
位置: C: > MVN > health > src > test > java > com > companyname > insurance > AppTest.java
package com.companyname.insurance; import junit.framework.Test; import junit.framework.TestCase; import junit.framework.TestSuite; /** * Unit test for simple App. */ public class AppTest extends TestCase { /** * Create the test case * * @param testName name of the test case */ public AppTest( String testName ) { super( testName ); } /** * @return the suite of tests being tested */ public static Test suite() { return new TestSuite( AppTest.class ); } /** * Rigourous Test :-) */ public void testApp() { assertTrue( true ); } }
就是這樣。現在可以看到Maven的功能。您可以創建任何類型,使用 maven 單一命令的項目並啟動開發。