1、在Eclipse中选择File-->Import-->Existing Projects into Workspace导入已有项目,假设路径为:
/download/hadoop-1.0.1/src/contrib/eclipse-plugin,默认的项目名称是MapReduceTools
2、默认项目名称为MapReduceTools,然后在项目MapReduceTools中新建lib目录,并把hadoop的hadoop-core、commons-cli-1.2.jar、commons-lang-2.4.jar、commons-configuration-1.6.jar、jackson-mapper-asl-1.8.8.jar、jackson-core-asl-1.8.8.jar、commons-httpclient-3.0.1.jar拷贝到该目录。
3、修改../build-contrib.xml
<property name="version" value="1.0.1"/>
<property name="hadoop.root" location="/download/develop/hadoop-1.0.1"/>
<property name="eclipse.home" location="/download/eclipse" />
4、修改build.xml
<target name="jar" depends="compile" unless="skip.contrib">
<mkdir dir="${build.dir}/lib"/>
<copy file="${hadoop.root}/hadoop-core-${version}.jar" tofile="${build.dir}/lib/hadoop-core.jar" verbose="true"/>
<copy file="${hadoop.root}/lib/commons-cli-1.2.jar" todir="${build.dir}/lib" verbose="true"/>
<copy file="${hadoop.root}/lib/commons-lang-2.4.jar" todir="${build.dir}/lib" verbose="true"/>
<copy file="${hadoop.root}/lib/commons-configuration-1.6.jar" todir="${build.dir}/lib" verbose="true"/>
<copy file="${hadoop.root}/lib/jackson-mapper-asl-1.8.8.jar" todir="${build.dir}/lib" verbose="true"/>
<copy file="${hadoop.root}/lib/jackson-core-asl-1.8.8.jar" todir="${build.dir}/lib" verbose="true"/>
<copy file="${hadoop.root}/lib/commons-httpclient-3.0.1.jar" todir="${build.dir}/lib" verbose="true"/>
<jar
jarfile="${build.dir}/hadoop-${name}-${version}.jar"
manifest="${root}/META-INF/MANIFEST.MF">
<fileset dir="${build.dir}" includes="classes/ lib/"/>
<fileset dir="${root}" includes="resources/ plugin.xml"/>
</jar>
</target>
5、右键选择项目-->Export,类型选择JAR file,把plugin.xml文件、classes目录、lib目录和resources目录选上,选择导出的jar目录,即可导出hadoop-eclipse-plugin-1.0.0.jar文件
6、把该文件放到eclipse/plugin目录下面,重启eclipse