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注意：以下操作基于Hadoop-1.2.1，Eclipse Luna，Win7 64位

1、将hadoop eclipse插件的工程导入Eclipse。插件源码目录如下：

D:\Lab\lib\hadoop\hadoop-1.2.1\src\contrib\eclipse-plugin

2、配置工程依赖

3、准备ant的配置文件

D:\Lab\lib\hadoop\hadoop-1.2.1\src\contrib\build-contrib.xml

将以上build-contrib.xml拷贝到项目目录中，并修改文件内容。具体如下：

  <property name="name" value="${ant.project.name}"/><property name="root" value="${basedir}"/><property name="hadoop.root" location="D:/Lab/lib/hadoop/hadoop-1.2.1"/><property name="eclipse.home" location="D:/Program Files/Eclipse/eclipse-jee-luna-R-win32-x86_64"/><property name="version" value="1.2.1"/><property name="build.contrib.dir" location="${root}/build/contrib"/><property name="build.dir" location="${root}/build/contrib/${name}"/>

4、修改build.xml

<!-- 1.修改 build-contrib.xml的位置，去掉"../" -->
<import file="build-contrib.xml" /><!-- 2.添加如下，否则提示"软件包 org.apache.hadoop.fs 不存在" -->
<path id="hadoop-jars"><fileset dir="${hadoop.root}/"><include name="hadoop-*.jar" /></fileset>
</path><!-- Override classpath to include Eclipse SDK jars -->
<path id="classpath"><pathelement location="${build.classes}" /><pathelement location="${hadoop.root}/build/classes" /><path refid="eclipse-sdk-jars" /><path refid="hadoop-jars" /><!--本行为添加内容-->
</path><!-- 3.修改并添加jar包,有些包已经有了,只添没有的   -->
<!-- Override jar target to specify manifest -->
<target name="jar" depends="compile" unless="skip.contrib"><mkdir dir="${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/commons-httpclient-3.0.1.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="${build.dir}/lib" verbose="true" /><jar jarfile="${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、修改MENIFEST.MF，在Bundule-ClassPath中增加一些依赖的jar。

Bundle-ClassPath: classes/,D:/Lab/lib/hadoop/hadoop-1.2.1/lib/hadoop-core-1.2.1.jar,D:/Lab/lib/hadoop/hadoop-1.2.1/lib/commons-cli-1.2.jar,D:/Lab/lib/hadoop/hadoop-1.2.1/lib/commons-configuration-1.6.jar,D:/Lab/lib/hadoop/hadoop-1.2.1/lib/commons-httpclient-3.0.1.jar,D:/Lab/lib/hadoop/hadoop-1.2.1/lib/commons-lang-2.4.jar,D:/Lab/lib/hadoop/hadoop-1.2.1/lib/jackson-core-asl-1.8.8.jar,D:/Lab/lib/hadoop/hadoop-1.2.1/lib/jackson-mapper-asl-1.8.8.jar

5、增加Ant Builder。

6、编译

在Project菜单中Build Project

7、运行结果

Buildfile: D:\Lab\ws-back-end\MapReduceTools\build.xmlcheck-contrib:init:[echo] contrib: eclipse-plugin[mkdir] Created dir: D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin[mkdir] Created dir: D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\classes[mkdir] Created dir: D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\test[mkdir] Created dir: D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\system[mkdir] Created dir: D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\system\classes[mkdir] Created dir: D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\examples[mkdir] Created dir: D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\test\logsinit-contrib:ivy-download:[get] Getting: http://repo2.maven.org/maven2/org/apache/ivy/ivy/2.1.0/ivy-2.1.0.jar[get] To: D:\Lab\lib\hadoop\hadoop-1.2.1\ivy\ivy-2.1.0.jar[get] http://repo2.maven.org/maven2/org/apache/ivy/ivy/2.1.0/ivy-2.1.0.jar moved to http://120.195.54.5:801/videoplayer/ivy-2.1.0.jar?ich_u_r_i=ae068fe40ff82e58486dd0954048cc19&ich_s_t_a_r_t=0&ich_e_n_d=0&ich_k_e_y=1445088923750763152452&ich_t_y_p_e=1&ich_d_i_s_k_i_d=6&ich_u_n_i_t=1[get] Not modified - so not downloadedivy-probe-antlib:ivy-init-antlib:ivy-init:
[ivy:configure] :: Ivy 2.1.0 - 20090925235825 :: http://ant.apache.org/ivy/ ::
[ivy:configure] :: loading settings :: file = D:\Lab\lib\hadoop\hadoop-1.2.1\ivy\ivysettings.xmlivy-resolve-common:ivy-retrieve-common:
[ivy:cachepath] DEPRECATED: 'ivy.conf.file' is deprecated, use 'ivy.settings.file' instead
[ivy:cachepath] :: loading settings :: file = D:\Lab\lib\hadoop\hadoop-1.2.1\ivy\ivysettings.xmlcompile:[echo] contrib: eclipse-plugin[javac] D:\Lab\ws-back-end\MapReduceTools\build.xml:65: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds[javac] Compiling 45 source files to D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\classes[javac] 注: 某些输入文件使用或覆盖了已过时的 API。[javac] 注: 有关详细信息, 请使用 -Xlint:deprecation 重新编译。[javac] 注: 某些输入文件使用了未经检查或不安全的操作。[javac] 注: 有关详细信息, 请使用 -Xlint:unchecked 重新编译。jar:[mkdir] Created dir: D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\lib[copy] Copying 1 file to D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\lib[copy] Copying D:\Lab\lib\hadoop\hadoop-1.2.1\hadoop-core-1.2.1.jar to D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\lib\hadoop-core.jar[copy] Copying 1 file to D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\lib[copy] Copying D:\Lab\lib\hadoop\hadoop-1.2.1\lib\commons-cli-1.2.jar to D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\lib\commons-cli-1.2.jar[copy] Copying 1 file to D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\lib[copy] Copying D:\Lab\lib\hadoop\hadoop-1.2.1\lib\commons-lang-2.4.jar to D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\lib\commons-lang-2.4.jar[copy] Copying 1 file to D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\lib[copy] Copying D:\Lab\lib\hadoop\hadoop-1.2.1\lib\commons-configuration-1.6.jar to D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\lib\commons-configuration-1.6.jar[copy] Copying 1 file to D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\lib[copy] Copying D:\Lab\lib\hadoop\hadoop-1.2.1\lib\commons-httpclient-3.0.1.jar to D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\lib\commons-httpclient-3.0.1.jar[copy] Copying 1 file to D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\lib[copy] Copying D:\Lab\lib\hadoop\hadoop-1.2.1\lib\jackson-mapper-asl-1.8.8.jar to D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\lib\jackson-mapper-asl-1.8.8.jar[copy] Copying 1 file to D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\lib[copy] Copying D:\Lab\lib\hadoop\hadoop-1.2.1\lib\jackson-core-asl-1.8.8.jar to D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\lib\jackson-core-asl-1.8.8.jar[jar] Building jar: D:\Lab\ws-back-end\MapReduceTools\build\contrib\eclipse-plugin\hadoop-eclipse-plugin-1.2.1.jar
BUILD SUCCESSFUL
Total time: 6 seconds