javax.servlet.ServletException: org.hibernate.impl.QueryImpl异常！
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查询的时候出现异常如下：
javax.servlet.ServletException: org.hibernate.impl.QueryImpl
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:523)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
action.EncodingFilter.doFilter(EncodingFilter.java:46)
------解决方法--------------------
class java.lang.ClassCastException
这个异常就是类型不匹配，你一定是哪个类型用错了。
