${hadoophome}:是hadoop的安装目录
${eclipsehome}:是eclipse的安装目录

1.修改${hadoophome}/src/contrib/eclipse-plugin/build.xml

<path id="classpath">

<pathelement location="${build.classes}"/>

<pathelement location="${hadoop.root}/build/classes"/>

<path refid="eclipse-sdk-jars"

/>

path>





<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>




2.在${hadoophome}/src/contrib下面的build-contrib.xml中添加




<property
name="version"
value="1.2.1"/>
<property
name="ivy.version"
value="2.1.0"/>
<property
name="eclipse.home"
location="${eclipsehome}"/>






3.修改${hadoophome}/src/contrib/ecipse-plugin/META-INF/MANIFEST.MF


修改最后的Bundle-ClassPath:(最后把Bundle-ClassPath:都覆盖掉，否则可能会出现MANIFEST.MF无效的问题)

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

4.回到${hadoophome}/src/contrib/ecipse-plugin，ant编译

5.在${hadoophome}/build/contrib/eclipse-plugin找到编译好的插件hadoop-eclipse-plugin-1.2.1.jar并将其copy到eclipse下的plugin目录下

ITPub博客

编译eclipse的hadoop插件