.
< bean? id ="oracleLobHandler" ?
??????class ="org.springframework.jdbc.support.lob.OracleLobHandler" ?
??????lazy-init ="true" > ??
???? < property? name ="nativeJdbcExtractor" ?ref ="nativeJdbcExtractor" ? />
</ bean > ????
?
< bean? id ="nativeJdbcExtractor" ???????class ="org.springframework.jdbc.support.nativejdbc.CommonsDbcpNativeJdbcExtractor"
??????lazy-init ="true" ? /> ??

<!-- ?Hibernate?SessionFactory? -->
< bean? id ="sessionFactory" ?class ="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean" >
???? < property? name ="dataSource" ?ref ="dataSource" ? />
???? < property? name ="configLocation" ?value ="classpath:hibernate/hibernate.cfg.xml" ? />
???? < property? name ="hibernateProperties" >
???????? < value >
??????????
???????? </ value >
???? </ property >
???? < property? name ="lobHandler" ?ref ="oracleLobHandler" ? />
</ bean >
.

LobHandler 需要訪問本地 JDBC 對象，這一任務委托給 NativeJdbcExtractor Bean 來完成，NativeJdbcExtractor是一個本地JDBC對象抽取器，因此我們為 LobHandler 注入了一個 nativeJdbcExtractor。最后，我們把 lobHandler Bean 注入到需要進行 LOB 數據訪問操作的sessionFactory Bean中或者直接注入到dao Bean中去。