Maven HelloWorld

1.新建hello_world主目录；

2.在主目录下新建pom.xml文件，输入如下内容；

<?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/maven-4.0.0.xsd">
	
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.iteye.xujava.hello_world</groupId>
	<artifactId>hello-world</artifactId>
	<version>1.0.0-SNAPSHOT</version>
	<name>Maven Hello World Project</name>

</project>

3.在主目录下新建目录src/main/java,在此目录下新建包路径com.iteye.xujava.hello_world。在该目录下新建HelloWorld.java,内容如下：

package com.iteye.xujava.hello_world;

public class HelloWorld
{
	public String sayHello(){
		return "Hello Maven";
	}

	public static void main(String[] args){
		System.out.println(new HelloWorld().sayHello());
	}
}

4.在命令提示行中进入主目录，输入命令mvn clean compile进行编辑。clean为清理、compile为编译。

5.在pom.xml中追加junit的依赖，POM文件内容如下：

<?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/maven-4.0.0.xsd">
	
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.iteye.xujava.hello_world</groupId>
	<artifactId>hello-world</artifactId>
	<version>1.0.0-SNAPSHOT</version>
	<name>Maven Hello World Project</name>

	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.9</version>
			<scope>test</scope>
		</dependency>
	</dependencies>

</project>

6.在主目录下添加src/test/java目录，在该目录下添加包路径com.iteye.xujava.hello_world，在该目录下添加HelloWorldTest.java,内容如下：

package com.iteye.xujava.hello_world;

import static org.junit.Assert.assertEquals;
import org.junit.Test;

public class HelloWorldTest
{
	@Test
	public void testSayHello(){
		HelloWorld helloWorld=new HelloWorld();
		String result=helloWorld.sayHello();
		assertEquals("Hello Maven",result);
	}
}

7.在命令提示行中输入mvn clean test进行测试

8.在命令提示行中输入mvn clean package打包

9.如果想运行Jar包，在 pom.xml中添加插入，POM内容如下：

<?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/maven-4.0.0.xsd">
	
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.iteye.xujava.hello_world</groupId>
	<artifactId>hello-world</artifactId>
	<version>1.0.0-SNAPSHOT</version>
	<name>Maven Hello World Project</name>

	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.9</version>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<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.iteye.xujava.hello_world.HelloWorld</mainClass>
								</transformer>
							</transformers>
						</configuration>
					</execution>
				</executions>
			</plugin>
		</plugins>
	</build>
</project>

9.在命令提示行输入mvn clean package打包

10.在命令提示行输入java -jar target\hello-world-1.0.0-SNAPSHOT.jar

输出：Hello Maven

11.在命令提示行输入mvn clean install安装到Maven库

12.在每个命令后面加上-X,Debug模式

13.可以直接运行mvn archetype:generate生成项目框架

下面是运行这个命令的执行过程：

E:\mavenspace>mvn archetype:generate

...此处内容自动生成，太多，省略。。。
Choose a number or apply filter (format: [groupId:]artifactId, case sensitive co
ntains): 280:(此处直接回车)
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:(此处直接回车)
Define value for property 'groupId': : com.iteye.xujava(此处输入groupId)
Define value for property 'artifactId': : helloworld(此处输入artifactId)
Define value for property 'version':  1.0-SNAPSHOT: :(此处直接回车或输入自己的版本号)
Define value for property 'package':  com.iteye.xujava: : com.iteye.xujava.helloworld(此处直接回国或输入自己的包)
Confirm properties configuration:
groupId: com.iteye.xujava
artifactId: helloworld
version: 1.0-SNAPSHOT
package: com.iteye.xujava.helloworld
 Y: : Y(此处输入Y)
[INFO] -------------------------------------------------------------------------
---
[INFO] Using following parameters for creating project from Old (1.x) Archetype:
 maven-archetype-quickstart:1.1
[INFO] -------------------------------------------------------------------------
---
[INFO] Parameter: groupId, Value: com.iteye.xujava
[INFO] Parameter: packageName, Value: com.iteye.xujava.helloworld
[INFO] Parameter: package, Value: com.iteye.xujava.helloworld
[INFO] Parameter: artifactId, Value: helloworld
[INFO] Parameter: basedir, Value: E:\mavenspace
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] project created from Old (1.x) Archetype in dir: E:\mavenspace\helloworld

[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1:06.388s
[INFO] Finished at: Sat Jun 15 16:28:34 CST 2013
[INFO] Final Memory: 10M/110M
[INFO] ------------------------------------------------------------------------
E:\mavenspace>

完成后，项目框架及POM文件已经生成,自动生成的POM文件如下。

<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.iteye.xujava</groupId>
  <artifactId>helloworld</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>helloworld</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>

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