Hessian异常求解

根据博文配置
http://web.iteye.com/blog/513238

Hello world
{work=任务}
[a, {Name=刘德华, Add=上海}, {work=任务}]
2012-4-4 16:49:24 com.caucho.hessian.io.SerializerFactory getDeserializer
警告: Hessian/Burlap: 'com.a.e.User' is an unknown class in sun.misc.Launcher$AppClassLoader@1372a1a:
java.lang.ClassNotFoundException: com.a.e.User

不知道为什么会报警告？？？？

Hessian版本是 4.0.7