求大神!EJB3.0 JBoss
行猿 2012-07-06 04:03:47 java.lang.ClassCastException: $Proxy75 cannot be cast to com.jov.project.dao.BookDao
org.apache.jsp.index_jsp._jspService(index_jsp.java:242)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:336)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
这是什么问题?
望大神解决··