问题描述
之前的war包都运行的好好的，可最近忽然weblogic报出这样的错误：org.springframework.dao.DataAccessResourceFailureException: Could not create Oracle LOB; nested exception is org.springframework.dao.InvalidDataAccessApiUsageException: Couldn't initialize OracleLobHandler because Oracle driver classes are not available. Note that OracleLobHandler requires Oracle JDBC driver 9i or higher!; nested exception is java.lang.NullPointerExceptionat org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.createLob(OracleLobHandler.java:368)at ......org.springframework.dao.InvalidDataAccessApiUsageException: Couldn't initialize OracleLobHandler because Oracle driver classes are not available. Note that OracleLobHandler requires Oracle JDBC driver 9i or higher!; nested exception is java.lang.NullPointerExceptionat org.springframework.jdbc.support.lob.OracleLobHandler.initOracleDriverClasses(OracleLobHandler.java:164)at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.createLob(OracleLobHandler.java:339)spring配置文件都有配置：<!-- 支持对clob的支持 add by yangbo 0601--> <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" /> weblogic的jdb选的驱动是oracle 9i的 Oracle's Driver(Thin)Versions:0.0.1,9.2.0,10怎么样才能解决这个问题呀？急死我了！都好几天了
解决方案
引用Couldn't initialize OracleLobHandler because Oracle driver classes are not available. Note that OracleLobHandler requires Oracle JDBC driver 9i or higher!; nested exception is java.lang.NullPointerException 栈里边告诉你了错误的根源：driver class得不到，驱动加载有问题啊。你再检查一下，是否驱动被换过？
解决方案二：
org.springframework.dao.DataAccessResourceFailureException: Could not create Oracle LOB; nested exception is org.springframework.dao.InvalidDataAccessApiUsageException: Couldn't initialize OracleLobHandler because Oracle driver classes are not available. Note that OracleLobHandler requires Oracle JDBC driver 9i or higher!; nested exception is java.lang.NullPointerException at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.createLob(OracleLobHandler.java:368) at 驱动加载失败了，你看看你的连接是否有误注意（IP、端口、防火墙）
解决方案三：
dao包里与数据库交互的地方出了问题，你看看是不是从数据库中取东西，还是添加东西时出错了，与驱动没关系的
解决方案四：
是只在WEBLOGIC才报错？还是在TOMCAT等中间件也会报错