插件名称：hadoop2x-eclipse-plugin
插件地址：https://github.com/winghc/hadoop2x-eclipse-plugin
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?1.下载并解压hadoop2.x，下载地址http://hadoop.apache.org/releases.html#Download（我下载的是编译好的包）
?2.下载并解压eclipse(我的是4.4.1版本，其他的版本类似)
?3.下载hadoop2x-eclipse-plugin插件并解压自己喜欢的目录，为了方便表达，我暂时叫他"H2EP_HOME"
?4.插件编译需要ant工具，下载地址http://ant.apache.org/bindownload.cgi
??? 配置好ANT_HOME环境变量，指向ant解压地址，配置PATH环境变量，增加%ANT_HOME%\bin（linux环境类似）
?5.打开命令行工具，进入“H2EP_HOME”目录；
?6.执行ant jar -Dversion=2.x.x -Dhadoop.version=2.x.x -Declipse.home=/opt/eclipse -Dhadoop.home=/usr/share/hadoop
?? eclipse.home配置成eclipse安装目录
?? hadoop.home配置成hadoop的解压目录
?? 将2.x.x修改成对应的hadoop的版本号
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?7.命令行在ivy-resolve-common处卡了
?? 原因是找不到几个依赖包，那几个依赖包可能是换路径了，其实不需要这几个依赖包也可以
?? 解决方案：
?? 修改"H2EP_HOME"\src\contrib\eclipse-plugin\build.xml
?? 找到：
<target name="compile" depends="init, ivy-retrieve-common" unless="skip.contrib">
??? 去掉depends修改为
<target name="compile" unless="skip.contrib">
?8.再次执行第6步的编译命令，会提示copy不到相关jar包的错误，
??? 解决方案：
??? 修改"H2EP_HOME"\ivy\libraries.properties文件，
??? 将报错的jar包版本号跟换成与"HADOOP_HOME"\share\hadoop\common\lib下面jar对应的版本号
??? 此步可能会有多个jar包版本不匹配，需要多次修改
?9.再次执行第6步的编译命令，执行成功
??? 在"H2EP_HOME"\build\contrib\eclipse-plugin下生成hadoop-eclipse-plugin-2.x.x.jar插件
?10.将hadoop-eclipse-plugin-2.x.x.jar放到eclipse的plugins目录下，启动eclipse
?11.打开window===>prefernces,找到Hadoop Map/Reduce选项卡
??配置hadoop installation directory目录，指向hadoop的安装目录
?12.打开window====>show view====>other，找到Map/Reduce Locations，使其显示
?13.在Map/Reduce Locations中右键=====>new hadoop locations，
??此时没反应，查看eclipse日志（工作空间\.metadata\.log）,发现报错：
java.lang.ClassNotFoundException: org.apache.commons.collections.map.UnmodifiableMap??
??解决方案：
??修改"H2EP_HOME"\src\contrib\eclipse-plugin\build.xml
??增加：
<copy file="${hadoop.home}/share/hadoop/common/lib/commons-collections-${commons-collections.version}.jar" todir="${build.dir}/lib" verbose="true"/>?? <jar>标签增加
lib/commons-collections-${commons-collections.version}.jar,?14.执行 eclipse.exe -clean(清理一下缓存，不然有可能还是出现13步的问题)启动eclipse
?完整的build.xml如下（"H2EP_HOME"\src\contrib\eclipse-plugin\build.xml）
<?xml version="1.0" encoding="UTF-8" standalone="no"?><!-- Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.--><project default="jar" name="eclipse-plugin"> <import file="../build-contrib.xml"/> <path id="eclipse-sdk-jars"> <fileset dir="${eclipse.home}/plugins/"> <include name="org.eclipse.ui*.jar"/> <include name="org.eclipse.jdt*.jar"/> <include name="org.eclipse.core*.jar"/> <include name="org.eclipse.equinox*.jar"/> <include name="org.eclipse.debug*.jar"/> <include name="org.eclipse.osgi*.jar"/> <include name="org.eclipse.swt*.jar"/> <include name="org.eclipse.jface*.jar"/> <include name="org.eclipse.team.cvs.ssh2*.jar"/> <include name="com.jcraft.jsch*.jar"/> </fileset> </path> <path id="hadoop-sdk-jars"> <fileset dir="${hadoop.home}/share/hadoop/mapreduce"> <include name="hadoop*.jar"/> </fileset> <fileset dir="${hadoop.home}/share/hadoop/hdfs"> <include name="hadoop*.jar"/> </fileset> <fileset dir="${hadoop.home}/share/hadoop/common"> <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-sdk-jars"/> </path> <!-- Skip building if eclipse.home is unset. --> <target name="check-contrib" unless="eclipse.home"> <property name="skip.contrib" value="yes"/> <echo message="eclipse.home unset: skipping eclipse plugin"/> </target> <!--<target name="compile" depends="init, ivy-retrieve-common" unless="skip.contrib">--> <!-- 此处去掉 depends="init, ivy-retrieve-common" --> <target name="compile" unless="skip.contrib"> <echo message="contrib: ${name}"/> <javac encoding="${build.encoding}" srcdir="${src.dir}" includes="**/*.java" destdir="${build.classes}" debug="${javac.debug}" deprecation="${javac.deprecation}"> <classpath refid="classpath"/> </javac> </target> <!-- Override jar target to specify manifest --> <target name="jar" depends="compile" unless="skip.contrib"> <mkdir dir="${build.dir}/lib"/> <copy todir="${build.dir}/lib/" verbose="true"> <fileset dir="${hadoop.home}/share/hadoop/mapreduce"> <include name="hadoop*.jar"/> </fileset> </copy> <copy todir="${build.dir}/lib/" verbose="true"> <fileset dir="${hadoop.home}/share/hadoop/common"> <include name="hadoop*.jar"/> </fileset> </copy> <copy todir="${build.dir}/lib/" verbose="true"> <fileset dir="${hadoop.home}/share/hadoop/hdfs"> <include name="hadoop*.jar"/> </fileset> </copy> <copy todir="${build.dir}/lib/" verbose="true"> <fileset dir="${hadoop.home}/share/hadoop/yarn"> <include name="hadoop*.jar"/> </fileset> </copy> <copy todir="${build.dir}/classes" verbose="true"> <fileset dir="${root}/src/java"> <include name="*.xml"/> </fileset> </copy> <copy file="${hadoop.home}/share/hadoop/common/lib/protobuf-java-${protobuf.version}.jar" todir="${build.dir}/lib" verbose="true"/> <copy file="${hadoop.home}/share/hadoop/common/lib/log4j-${log4j.version}.jar" todir="${build.dir}/lib" verbose="true"/> <copy file="${hadoop.home}/share/hadoop/common/lib/commons-cli-${commons-cli.version}.jar" todir="${build.dir}/lib" verbose="true"/> <copy file="${hadoop.home}/share/hadoop/common/lib/commons-configuration-${commons-configuration.version}.jar" todir="${build.dir}/lib" verbose="true"/> <copy file="${hadoop.home}/share/hadoop/common/lib/commons-lang-${commons-lang.version}.jar" todir="${build.dir}/lib" verbose="true"/> <!-- 此处增加 commons-collections 依赖--> <copy file="${hadoop.home}/share/hadoop/common/lib/commons-collections-${commons-collections.version}.jar" todir="${build.dir}/lib" verbose="true"/> <copy file="${hadoop.home}/share/hadoop/common/lib/jackson-core-asl-${jackson.version}.jar" todir="${build.dir}/lib" verbose="true"/> <copy file="${hadoop.home}/share/hadoop/common/lib/jackson-mapper-asl-${jackson.version}.jar" todir="${build.dir}/lib" verbose="true"/> <copy file="${hadoop.home}/share/hadoop/common/lib/slf4j-log4j12-${slf4j-log4j12.version}.jar" todir="${build.dir}/lib" verbose="true"/> <copy file="${hadoop.home}/share/hadoop/common/lib/slf4j-api-${slf4j-api.version}.jar" todir="${build.dir}/lib" verbose="true"/> <copy file="${hadoop.home}/share/hadoop/common/lib/guava-${guava.version}.jar" todir="${build.dir}/lib" verbose="true"/> <copy file="${hadoop.home}/share/hadoop/common/lib/hadoop-auth-${hadoop.version}.jar" todir="${build.dir}/lib" verbose="true"/> <copy file="${hadoop.home}/share/hadoop/common/lib/commons-cli-${commons-cli.version}.jar" todir="${build.dir}/lib" verbose="true"/> <copy file="${hadoop.home}/share/hadoop/common/lib/netty-${netty.version}.jar" todir="${build.dir}/lib" verbose="true"/> <jar jarfile="${build.dir}/hadoop-${name}-${version}.jar" manifest="${root}/META-INF/MANIFEST.MF"> <manifest> <attribute name="Bundle-ClassPath" value="classes/, lib/hadoop-mapreduce-client-core-${hadoop.version}.jar, lib/hadoop-mapreduce-client-common-${hadoop.version}.jar, lib/hadoop-mapreduce-client-jobclient-${hadoop.version}.jar, lib/hadoop-auth-${hadoop.version}.jar, lib/hadoop-common-${hadoop.version}.jar, lib/hadoop-hdfs-${hadoop.version}.jar, lib/protobuf-java-${protobuf.version}.jar, lib/log4j-${log4j.version}.jar, lib/commons-cli-1.2.jar, lib/commons-configuration-1.6.jar, lib/commons-httpclient-3.1.jar, <!-- 此处修改commons-lang版本--> lib/commons-lang-${commons-lang.version}.jar, <!-- 此处增加commons-collections依赖--> lib/commons-collections-${commons-collections.version}.jar, lib/jackson-core-asl-1.8.8.jar, lib/jackson-mapper-asl-1.8.8.jar, lib/slf4j-log4j12-1.7.5.jar, lib/slf4j-api-1.7.5.jar, lib/guava-${guava.version}.jar, lib/netty-${netty.version}.jar"/> </manifest> <fileset dir="${build.dir}" includes="classes/ lib/"/> <!--fileset dir="${build.dir}" includes="*.xml"/--> <fileset dir="${root}" includes="resources/ plugin.xml"/> </jar> </target></project>?
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