这里用的是MyEclpise的自带的MAVEN插件。
Maven最好配置成你自己安装的那个，MyEclipse自带会有些许Bug。
用nexus代理Maven的中央仓库，setting.xml的配置文件修改内容如下：
<mirrors>
<mirror>
<id>nexus</id>
<mirrorOf>*</mirrorOf>
<name>Nexus Mirror</name>
<url>http://localhost:8081/nexus/content/groups/public</url>
</mirror>
</mirrors>
<profiles>
<profile>
<id>nexus</id>
<repositories>
<repository>
<id>central</id>
<url>http://central</url>
<releases><enabled>true</enabled></releases>
<snapshots><enabled>true</enabled></snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>central</id>
<url>http://central</url>
<releases><enabled>true</enabled></releases>
<snapshots><enabled>true</enabled></snapshots>
</pluginRepository>
</pluginRepositories>
</profile>
</profiles>
<activeProfiles>
<activeProfile>nexus</activeProfile>
</activeProfiles>
http://localhost:8081/nexus/content/groups/public 是仓库组的地址。
打下MyEclipse新建工程的界面，选择Maven下的Maven Project，打开如下图的向导：
这里我们要选中create a simple project。
点击下一步，填写GAV相关内容。
点击完成后，我们就已经成功创建了一个Maven project了。
工程的默认目录结构如下：
所有的Java源文件都要写在src/main/java目录下，所有的测试类都要写在src/test/java下面，这是Maven的默认值。
此时,pom.xml里只有默认的属性
<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-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.test</groupId>
<artifactId>test</artifactId>
<version>0.0.1-SNAPSHOT</version>
</project>
这是最精简的pom.xml了。
这时我们加入junit的支持，新建一个测试类。
在项目上右键Maven-Add Dependency，显示如下界面：
输入junit加入测试支持类库。
在src/test/java下新建一个测试类如下：
package com;
import org.junit.Test;
public class TestRun
{
@Test
public void testA()
{
System.out.println("test a method ");
}
@Test
public void testB()
{
System.out.println("test b method ");
}
}
右键Run As ----- Maven test，进行测试，显示结果如下：
[INFO] Scanning
for projects
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building test 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.5:resources (
default-resources) @ test ---
[debug] execute contextualize
[WARNING] Using platform encoding (GBK actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:2.3.2:compile (
default-compile) @ test ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-resources-plugin:2.5:testResources (
default-testResources) @ test ---
[debug] execute contextualize
[WARNING] Using platform encoding (GBK actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:2.3.2:testCompile (
default-testCompile) @ test ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-surefire-plugin:2.10:test (
default-test) @ test ---
[INFO] Surefire report directory: D:\workspace\test\target\surefire-reports
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running com.TestRun
test a method
test b method
Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.071 sec
Results :
Tests run: 2, Failures: 0, Errors: 0, Skipped: 0
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.847s
[INFO] Finished at: Tue Sep 11 14:20:59 CST 2012
[INFO] Final Memory: 3M/6M
[INFO] ------------------------------------------------------------------------
ok,一个基本的maven项目已经构建完成。我们还可以将现存的java项目利用myclipse方便的转换成maven project，此部分内容我们在下一节里讨论。