This parser does not support specification "null" version "null"

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今天在eclipse里面运行M/R的时候报这个错

12/09/22 12:17:53 ERROR conf.Configuration: Failed to set setXIncludeAware(true) for parser org.apache.xerces.jaxp.DocumentBuilderFactoryImpl@55571e:java.lang.UnsupportedOperationException: This parser does not support specification "null" version "null"

java.lang.UnsupportedOperationException: This parser does not support specification "null" version "null"
at javax.xml.parsers.DocumentBuilderFactory.setXIncludeAware(DocumentBuilderFactory.java:590)
at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:1054)
at org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:1030)
at org.apache.hadoop.conf.Configuration.getProps(Configuration.java:980)
at org.apache.hadoop.conf.Configuration.set(Configuration.java:405)
at org.apache.hadoop.conf.Configuration.setBoolean(Configuration.java:585)
at org.apache.hadoop.util.GenericOptionsParser.processGeneralOptions(GenericOptionsParser.java:290)
at org.apache.hadoop.util.GenericOptionsParser.parseGeneralOptions(GenericOptionsParser.java:375)
at org.apache.hadoop.util.GenericOptionsParser.<init>(GenericOptionsParser.java:153)
at org.apache.hadoop.util.GenericOptionsParser.<init>(GenericOptionsParser.java:138)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:59)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)

at com.test.analyzer.hdfs.MobilePhoneTypeCount.main(MobilePhoneTypeCount.java:155)

产生原因：xerces.jar or xercesImpl.jar的版本不兼容导致引发Application冲突.
解决办法：将classpath中的xerces.jar or xercesImpl.jar remove.