任何人都可以帮助我解决此错误。我试图将pdf存储在数据库中，但出现此异常。
Type Exception Report
Message Servlet execution threw an exception
Description The server encountered an unexpected condition that prevented it
from fulfilling the request.
Exception
javax.servlet.ServletException: Servlet execution threw an exception
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
Root Cause
java.lang.AbstractMethodError: Method
oracle/jdbc/driver/T4CPreparedStatement.setBlob(ILjava/io/InputStream;)V is
abstract
oracle.jdbc.driver.T4CPreparedStatement.setBlob(T4CPreparedStatement.java)
ResumeDetails.service(ResumeDetails.java:59)
javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
Note The full stack trace of the root cause is available in the server
logs.