java - javax.servlet.ServletException：java.lang.NoClassDefFoundError

Question

我正在尝试使用 JSP/Servlet 和休眠来编写 Web 应用程序，但我遇到了这个错误。请高手帮帮我。

root cause 

javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/hibernate/HibernateException
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:865)
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:794)
    org.apache.jsp.pages.province_jsp._jspService(province_jsp.java:253)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:723)