Java连接 oracle出错

[meihua212]

Java web程序出现下面的错误
jdk1.6 tomcat6.0 myeclipse6.0 oracle9.1

使用 ojdbc14和 ojdbc6总是出现一下错误

我把程序改为普通Java就用ojdbc14可以 用ojdbc6也出错
怎么回事啊
HTTP Status 500 -

--------------------------------------------------------------------------------

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Servlet execution threw an exception


root cause

java.lang.UnsupportedClassVersionError: Bad version number in .class file
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClass(Unknown Source)
java.security.SecureClassLoader.defineClass(Unknown Source)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1819)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:872)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1327)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1206)
java.lang.ClassLoader.loadClassInternal(Unknown Source)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Unknown Source)
com.v512.guestbook.AddMessageServlet.doPost(AddMessageServlet.java:52)
javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)


note The full stack trace of the root cause is available in the Apache Tomcat/6.0.16 logs.


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Apache Tomcat/6.0.16

[laorer]

java.lang.UnsupportedClassVersionError: Bad version number in .class file

不知道是driver问题,还是什么问题
jdk应该是向下兼容的啊