JavaWeb中MVC遇到问题,小白求助!

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HTTP Status 500 - An exception occurred processing JSP page /web_all_shows.jsp at line 30

type Exception report

message An exception occurred processing JSP page /web_all_shows.jsp at line 30

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: An exception occurred processing JSP page /web_all_shows.jsp at line 30

27:
28: <%
29: UsersDao users=new UsersDao();
30: List<Users> list=users.QueryAll();%>
31: <table border="1" align="center" width="650" data-genuitec-lp-enabled="false" data-genuitec-file-id="wc3-0" data-genuitec-path="/NewWeb/WebRoot/web_all_shows.jsp">
32: <tr><td>鐢ㄦ埛鍚嶏細</td><td>ID:</td><td>鎬у埆</td></tr>
33: <% for(Users obj:list){ %>


Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:580)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:462)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

root cause

javax.servlet.ServletException: java.lang.NoClassDefFoundError: Could not initialize class dbc.JdbcUtil
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:916)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:845)
org.apache.jsp.web_005fall_005fshows_jsp._jspService(web_005fall_005fshows_jsp.java:154)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:439)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

root cause

java.lang.NoClassDefFoundError: Could not initialize class dbc.JdbcUtil
dao.UsersDao.QueryAll(UsersDao.java:90)
org.apache.jsp.web_005fall_005fshows_jsp._jspService(web_005fall_005fshows_jsp.java:119)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:439)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
...全文

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