MapReduce 编程 系列一 搭建基本的Maven工程

这是一个maven 工程，安装完mvn 3.2.2后， 
mvn --version
Apache Maven 3.2.3 (33f8c3e1027c3ddde99d3cdebad2656a31e8fdf4; 2014-08-12T04:58:10+08:00)
Maven home: /opt/apache-maven-3.2.3
Java version: 1.7.0_09, vendor: Oracle Corporation
Java home: /data/hadoop/data1/usr/local/jdk1.7.0_09/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "2.6.18-348.6.1.el5", arch: "amd64", family: "unix"


用下面的命令创建工程：
mvn archetype:generate -DgroupId=org.freebird -DartifactId=mr1_example1 -DarchetypeArtifactId=maven-archetype-quickst\
art -DinteractiveMode=false


进入工程目录，打开pom.xml，修改如下：<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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>org.freebird</groupId>
<artifactId>mr1_example1</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
<name>mr1_example1</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-core</artifactId>
<version>1.2.1</version>
</dependency>
</dependencies>
</project>

然后删除掉test目录
rm -rf src/test/
mvn clean compile  编译通过。