原来项目中用的数据库连接池是 hibernate自带的dbcp,项目run的还行。
过了一段时间之后想优化一下项目，想使用 spring的数据源部分，把数据库链接放到容器当中建立数据源
<bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName">
<value>java:comp/env/DS</value>
</property>
</bean>
配上之后，系统总是抛出异常：
java.lang.AbstractMethodError: oracle.jdbc.driver.OracleResultSetImpl.getBlob(Ljava/lang/String;)Ljava/sql/Blob;
at org.apache.commons.dbcp.DelegatingResultSet.getBlob(DelegatingResultSet.java:526)
at net.sf.hibernate.type.BlobType.get(BlobType.java:32)
at net.sf.hibernate.type.NullableType.nullSafeGet(NullableType.java:62)
at net.sf.hibernate.type.NullableType.nullSafeGet(NullableType.java:53)
at net.sf.hibernate.type.AbstractType.hydrate(AbstractType.java:66)
at net.sf.hibernate.loader.Loader.hydrate(Loader.java:686)
at net.sf.hibernate.loader.Loader.loadFromResultSet(Loader.java:627)
at net.sf.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:586)
at net.sf.hibernate.loader.Loader.getRow(Loader.java:501)
at net.sf.hibernate.loader.Loader.getRowFromResultSet(Loader.java:213)
at net.sf.hibernate.loader.Loader.doQuery(Loader.java:281)
at net.sf.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:133)
at net.sf.hibernate.loader.Loader.doList(Loader.java:1033)
at net.sf.hibernate.loader.Loader.list(Loader.java:1024)
at net.sf.hibernate.hql.QueryTranslator.list(QueryTranslator.java:854)
at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1544)
at net.sf.hibernate.impl.QueryImpl.list(QueryImpl.java:39)
at org.springframework.orm.hibernate.HibernateTemplate$19.doInHibernate(HibernateTemplate.java:645)
at org.springframework.orm.hibernate.HibernateTemplate.execute(HibernateTemplate.java:312)
at org.springframework.orm.hibernate.HibernateTemplate.find(HibernateTemplate.java:631)
at org.springframework.orm.hibernate.HibernateTemplate.find(HibernateTemplate.java:610)
。。。。
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:155)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:122)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:57)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:144)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:174)
at $Proxy4.userLogin(Unknown Source)
。。。。。
at org.springframework.web.struts.DelegatingActionProxy.execute(DelegatingActionProxy.java:105)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:595)
2009-06-16 10:24:06 StandardWrapperValve[action]: Servlet.service() for servlet action threw exception
java.lang.AbstractMethodError: oracle.jdbc.driver.OracleResultSetImpl.getBlob(Ljava/lang/String;)Ljava/sql/Blob;
at org.apache.commons.dbcp.DelegatingResultSet.getBlob(DelegatingResultSet.java:526)
at net.sf.hibernate.type.BlobType.get(BlobType.java:32)
at net.sf.hibernate.type.NullableType.nullSafeGet(NullableType.java:62)
at net.sf.hibernate.type.NullableType.nullSafeGet(NullableType.java:53)
at net.sf.hibernate.type.AbstractType.hydrate(AbstractType.java:66)
at net.sf.hibernate.loader.Loader.hydrate(Loader.java:686)
at net.sf.hibernate.loader.Loader.loadFromResultSet(Loader.java:627)
at net.sf.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:586)
at net.sf.hibernate.loader.Loader.getRow(Loader.java:501)
at net.sf.hibernate.loader.Loader.getRowFromResultSet(Loader.java:213)
at net.sf.hibernate.loader.Loader.doQuery(Loader.java:281)
at net.sf.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:133)
at net.sf.hibernate.loader.Loader.doList(Loader.java:1033)
at net.sf.hibernate.loader.Loader.list(Loader.java:1024)
at net.sf.hibernate.hql.QueryTranslator.list(QueryTranslator.java:854)
at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1544)
at net.sf.hibernate.impl.QueryImpl.list(QueryImpl.java:39)
at org.springframework.orm.hibernate.HibernateTemplate$19.doInHibernate(HibernateTemplate.java:645)
at org.springframework.orm.hibernate.HibernateTemplate.execute(HibernateTemplate.java:312)
at org.springframework.orm.hibernate.HibernateTemplate.find(HibernateTemplate.java:631)
at org.springframework.orm.hibernate.HibernateTemplate.find(HibernateTemplate.java:610)
。。。。。
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
后来终于在网上找到了答案，至于是那位高手，俺忘了，不好意思啊，见谅！:-)
网友高手指出，是由于oracle的jar所导致的问题。经本人比较oracle 9i 的jar如下:
————————————————————————————————
oracle自带的jar: classes111.jar 952KB
classes12.jar 1.07MB
—————————————————————————————————
从官方下载的jar: classes12.jar 1.35MB
—————————————————————————————————
换完oracle的jar 问题解决。那位高手或网友对这个问题做具体分析了或有啥好的文章、看法，希望留个评论。俺想再深入看看。:-)
最后，感谢那位不知名的网友！特别是你帮俺把问题解决了，没把你的网址记住，抱歉！
（浪费了好长时间啊，%>_<%）
