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📜  Maven-创建项目

📅  最后修改于: 2020-11-12 04:54:11             🧑  作者: Mango

Maven使用原型插件来创建项目。为了创建一个简单的Java应用程序，我们将使用maven-archetype-quickstart插件。在下面的示例中，我们将在C：\ MVN文件夹中创建一个基于Maven的Java应用程序项目。

让我们打开命令控制台，转到C：\ MVN目录并执行以下mvn命令。

C:\MVN>mvn archetype:generate
-DgroupId = com.companyname.bank 
-DartifactId = consumerBanking 
-DarchetypeArtifactId = maven-archetype-quickstart 
-DinteractiveMode = false

Maven将开始处理并将创建完整的Java应用程序项目结构。

[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
[INFO] No goals needed for project - skipping
[INFO] [archetype:generate {execution: default-cli}]
[INFO] Generating project in Batch mode
[INFO] -------------------------------------------------------------------
[INFO] Using following parameters for creating project
from Old (1.x) Archetype: maven-archetype-quickstart:1.0
[INFO] -------------------------------------------------------------------

[INFO] Parameter: groupId, Value: com.companyname.bank
[INFO] Parameter: packageName, Value: com.companyname.bank
[INFO] Parameter: package, Value: com.companyname.bank
[INFO] Parameter: artifactId, Value: consumerBanking
[INFO] Parameter: basedir, Value: C:\MVN
[INFO] Parameter: version, Value: 1.0-SNAPSHOT

[INFO] project created from Old (1.x) Archetype in dir: C:\MVN\consumerBanking
[INFO] ------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------
[INFO] Total time: 14 seconds
[INFO] Finished at: Tue Jul 10 15:38:58 IST 2012
[INFO] Final Memory: 21M/124M
[INFO] ------------------------------------------------------------------

现在转到C：/ MVN目录。您将看到创建了一个名为Consumer Banking的Java应用程序项目(在artifactId中指定)。 Maven使用标准目录布局，如下所示-

Java应用程序项目结构

使用上面的示例，我们可以了解以下关键概念-

Sr.No. Folder Structure & Description
1

consumerBanking

contains src folder and pom.xml
2

src/main/java

contains java code files under the package structure (com/companyName/bank).
3

src/main/test

contains test java code files under the package structure (com/companyName/bank).
4

src/main/resources

it contains images/properties files (In above example, we need to create this structure manually).

如果进行观察，您会发现Maven还创建了一个示例Java Source文件和Java Test文件。打开C：\ MVN \ consumerBanking \ src \ main \ java \ com \ companyname \ bank文件夹，您将看到App.java。

package com.companyname.bank;

/**
 * Hello world!
 *
 */
public class App {
   public static void main( String[] args ){
      System.out.println( "Hello World!" );
   }
}

打开C：\ MVN \ consumerBanking \ src \ test \ java \ com \ companyname \ bank文件夹以查看AppTest.java。

package com.companyname.bank;

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 );
   }
}

开发人员需要按照上表所述放置其文件，并且Maven处理所有与构建相关的复杂性。

在下一章中，我们将讨论如何使用maven Build and Test Project来构建和测试项目。