Caused by: java.lang.ClassCastException: org.apache.xml.dtm.ref.DTMManagerDefault cannot be cast to org.apache.xml.dtm.DTMManager
Error while adding the mapper ‘interface com.a.b.c‘ to configuration.
原因：org.apache.xalan_2.7.1.v201005080400.jar, xalan-2.7.1.jbossorg-1.jar包冲突
解决方案：去掉xalan-2.7.1.jbossorg-1.jar即可
[报错]java.lang.ClassCastException
原文：http://www.cnblogs.com/mzrs/p/5440125.html