tomcat+oracle报错

程序
<%@page contentType="text/html;charset=gb2312" language="java" import="java.sql.*"%>
<%@page import="java.io.*"%>
<%@page import="java.lang.*"%>
<html>
      <body>
      以下是从Oracle数据库读取的数据：<hr>
      <table border=1>
          <tr><td>id</td><td>书名</td><td>出版社</td><td>价格</td></tr>
      <%
          Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
          String url="jdbc.oracle:thin:@localhost:1521:oracle";
          String uid="system";
          String pwd="system";
          Connection con=DriverManager.getConnection(url,uid,pwd);
           out.println(DriverManager.getConnection(url,uid,pwd));            Statement stmt=con.createStatement();          ResultSet rst=stmt.executeQuery("select * from system.book");
          while(rst.next()){
          out.println("<tr>");
          out.println("<td>"+rst.getString("BOOKID")+"</td>");
      
          }
        rst.close();
        stmt.close();
        con.close();      %>      </table>
      </body>
</html>错误
javax.servlet.ServletException: No suitable driver
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.Oracle_jsp._jspService(Oracle_jsp.java:93)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause 
java.sql.SQLException: No suitable driver
java.sql.DriverManager.getConnection(DriverManager.java:532)
java.sql.DriverManager.getConnection(DriverManager.java:171)
org.apache.jsp.Oracle_jsp._jspService(Oracle_jsp.java:61)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)