在jsp文件

Question

我的代码是

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@page import="java.sql.*" %>
<%!
Statement st,st1,st2,st3=null;
Connection conn,con,connn,con3=null;
%>
<%
Class.forName("oracle.jdbc.driver.OracleDriver");
conn=DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xe","system","system");
st=conn.createStatement();
con=DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xe","system","system");
st1=con.createStatement();
connn=DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xe","system","system");
st2=connn.createStatement();
con3=DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xe","system","system");
st3=con3.createStatement();
%>

执行此文件时显示错误，如

org.apache.jasper.JasperException: An exception occurred processing JSP page /getcon.jsp at line 14

11: Connection conn,con,connn,con3=null;
12: %>
13: <%
14: Class.forName("oracle.jdbc.driver.OracleDriver");
15: conn=DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xe","system","system");
16: st=conn.createStatement();
17: con=DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xe","system","system");

我无法得到此错误如何解决此错误。我通过Tomcat Webapps 运行此代码。请帮我纠正这个错误。