ResultSet 的一个奇怪问题

报错：
  java.sql.SQLException: 对只转发结果集的无效操作: absolute
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java)
at oracle.jdbc.driver.BaseResultSet.absolute(BaseResultSet.java)
at _test__jsp._jspService(/test.jsp:47)
at com.caucho.jsp.JavaPage.service(JavaPage.java:74)
at com.caucho.jsp.Page.subservice(Page.java:485)
at com.caucho.server.http.FilterChainPage.doFilter(FilterChainPage.java:181)
at com.caucho.server.http.Invocation.service(Invocation.java:291)
at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:132)
at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:217)
at com.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:159)
at com.caucho.server.TcpConnection.run(TcpConnection.java:136)
at java.lang.Thread.run(Thread.java:536)