在将mahout与map reduce程序集成时，解析XML时出现此错误

运行程序时出现以下错误。任何想法？在将mahout与map reduce程序集成时，解析XML时出现此错误

Caused by: java.lang.NoClassDefFoundError: com/google/common/base/Charsets 
      at org.apache.mahout.text.wikipedia.XmlInputFormat$XmlRecordReader.<init>(XmlInputFormat.java:76) 
      at org.apache.mahout.text.wikipedia.XmlInputFormat.createRecordReader(XmlInputFormat.java:52) 
      at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.<init>(MapTask.java:488) 
      at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:731) 
      at org.apache.hadoop.mapred.MapTask.run(MapTask.java:364) 
      at org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:223) 
      at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) 
      at java.util.concurrent.FutureTask.run(Unknown Source) 
      at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
      at java.lang.Thread.run(Unknown Source) 
     Caused by: java.lang.ClassNotFoundException: com.google.common.base.Charsets 
      at java.net.URLClassLoader$1.run(Unknown Source) 
      at java.net.URLClassLoader$1.run(Unknown Source) 
      at java.security.AccessController.doPrivileged(Native Method) 
      at java.net.URLClassLoader.findClass(Unknown Source) 
      at java.lang.ClassLoader.loadClass(Unknown Source) 
      at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) 
      at java.lang.ClassLoader.loadClass(Unknown Source)*

来源

2014-09-22 dexter

一个想法是发布引发此错误的代码。 – 2014-09-22 18:17:09

该包没有找到该类。尝试解压缩jar文件&遍历到com/google/common/base包。我认为课程缺失。使用另一个jar文件，它具有字符集类

来源

2014-09-25 10:46:47

在将mahout与map reduce程序集成时，解析XML时出现此错误

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