關於JSP資料庫連接的問題？

js|資料|資料庫|資料庫連接|問題   
我的串連程式如下：
----------------------------------------------
<%@page contentType="text/html;charset=GB2312"%>
<%Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=questionnaire";
Connection con= DriverManager.getConnection(url,"sa","801208161");
Statement smt=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
ResultSet rs;
String sql;
%>
------------------------------------------------------
以下是出錯資訊：
An error occurred between lines: 1 and 7 in the jsp file: /opendata.jsp

Generated servlet error:
D:\tomcat\work\localhost\_\opendata$jsp.java:56: Class org.apache.jsp.Connection not found.
                Connection con= DriverManager.getConnection(url,"sa","801208161");
                ^


An error occurred between lines: 1 and 7 in the jsp file: /opendata.jsp

Generated servlet error:
D:\tomcat\work\localhost\_\opendata$jsp.java:56: Undefined variable or class name: DriverManager
                Connection con= DriverManager.getConnection(url,"sa","801208161");
                                ^


An error occurred between lines: 1 and 7 in the jsp file: /opendata.jsp

Generated servlet error:
D:\tomcat\work\localhost\_\opendata$jsp.java:57: Class org.apache.jsp.Statement not found.
                Statement smt=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
                ^


An error occurred between lines: 1 and 7 in the jsp file: /opendata.jsp

Generated servlet error:
D:\tomcat\work\localhost\_\opendata$jsp.java:58: Class org.apache.jsp.ResultSet not found.
                ResultSet rs;
                ^
4 errors, 1 warning