org.springframework.web.util.NestedServletException: Handler processing failed;
nested exception is java.lang.NoClassDefFoundError: org/apache/commons/io/output/DeferredFileOutputStream
如题，遇到了这个问题。只要加上commons-io-1.3.1，问题解决.
org.springframework.web.util.NestedServletException: Handler processing failed; nested exception i
原文：http://blog.csdn.net/hwb1992/article/details/23382729