말도 안되는 Exception이 발생하는데 대체 뭘까요;;

by 안지민 posted Nov 18, 2011
  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 }


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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)

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동일한 클래스끼리 cast가 안되는경우는 대체 뭔가요;;

상식적으로 말이 안되는 상황 아닌가요;;;

버전은 rel 8.3 입니다.

CentOS release 5.4 (Final)
Linux jeemin 2.6.18-164.el5xen #1 SMP Thu Sep 3 04:03:03 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
java-1.6.0-openjdk-1.6.0.0-1.16.b17.el5
httpd-2.2.3-53.el5.centos.3
tomcat5-5.5.23-0jpp.19.el5_6

다른 환경은 바로 아랫글 http://cubrid.com/zbxe/218719 와 동일합니다.

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