말도 안되는 Exception이 발생하는데 대체 뭘까요;;

  1 package jeemin.home.bean;

  2 

  3 import java.sql.*;

  4 

  5 import javax.sql.*;

  6 import javax.naming.*;

  7 import javax.servlet.http.*;

  8 

  9 import org.apache.commons.dbcp.DelegatingPreparedStatement;

 10 

 11 import cubrid.sql.CUBRIDOID;

 12 import cubrid.jdbc.driver.CUBRIDPreparedStatement;

 13 

 14 import jeemin.home.core.*;

 15 

 16 public class IndexBean {

 17 

 18     private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(IndexBean.class);

 19 

 20     public boolean init(HttpServletRequest request){

 21 

 22         LOG.debug("시작");

 23 

 24         try{

 25             Connection conn = ((DataSource)((Context)new InitialContext()).lookup("java:/comp/env/jdbc/cubrid")).getConnection();

 26             LOG.debug(conn.toString());

 27             PreparedStatement ps = conn.prepareStatement("INSERT INTO HM_IP(IP_IP) VALUES(?)");

 28             LOG.debug(ps.toString());

 29             Statement dps1 = ((DelegatingPreparedStatement)ps).getDelegate();

 30             LOG.debug(dps1.toString());

 31             Statement dps2 = ((DelegatingPreparedStatement)dps1).getDelegate();

 32             LOG.debug(dps2.toString());

 33 

 34             try{

 35                 CUBRIDPreparedStatement cps = (CUBRIDPreparedStatement)dps2;

 36             }catch(Exception e){

 37                 LOG.debug("말도 안되는 오류 발생.", e);

 38             }

 39 

 40 

 41             ps.close();

 42             conn.close();

 43         }catch(Exception e){

 44             LOG.debug("여기선 오류가 발생하지 않음.", e);

 45         }

 46 

 47         return false;

 48     }

 49 }

2011.11.18 14:10:58.318 DEBUG jeemin.home.bean.IndexBean.init:22 시작

2011.11.18 14:10:58.320 DEBUG jeemin.home.bean.IndexBean.init:26 org.apache.commons.dbcp.PoolableConnection@6d581e80

2011.11.18 14:10:58.321 DEBUG jeemin.home.bean.IndexBean.init:28 org.apache.commons.dbcp.DelegatingPreparedStatement@343a9d95

2011.11.18 14:10:58.322 DEBUG jeemin.home.bean.IndexBean.init:30 org.apache.commons.dbcp.PoolablePreparedStatement@343a9d95

2011.11.18 14:10:58.322 DEBUG jeemin.home.bean.IndexBean.init:32 cubrid.jdbc.driver.CUBRIDPreparedStatement@343a9d95

2011.11.18 14:10:58.325 DEBUG jeemin.home.bean.IndexBean.init:37 말도 안되는 오류 발생.

java.lang.ClassCastException: cubrid.jdbc.driver.CUBRIDPreparedStatement cannot be cast to cubrid.jdbc.driver.CUBRIDPreparedStatement

at jeemin.home.bean.IndexBean.init(IndexBean.java:35)

at org.apache.jsp.index_jsp._jspService(index_jsp.java:52)

at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:328)

at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:315)

at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)

at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)

at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)

at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:775)

at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:704)

at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:897)

at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)

at java.lang.Thread.run(Thread.java:636)

버전은 rel 8.3 입니다.

CentOS release 5.4 (Final)