acegi security随笔

java.lang.NoClassDefFoundError: edu/emory/mathcs/backport/java/util/concurrent/BlockingQueue

使用的ehcache-1.5.0.jar版本太高了，使用ehcache-1.3.0.jar就ok了

ehCache常用API

http://lcllcl987.iteye.com/blog/222693

Md5 java oracle

http://blog.csdn.net/liunian02050328/article/details/7973810

Caused by: java.lang.NoClassDefFoundError: org/springframework/dao/DataAccessException

缺少spring-tx-3.2.2.RELEASE.jar

commons-codec里面提供了Md5加密，看看文档

Commons Codec 编码解码器

Md5加密 Codec实现

api:http://commons.apache.org/proper/commons-codec/archives/1.7/apidocs/index.html