新手,求助!JSP连接ORACLE数据库,不成功。

已设置$CLASSPAHjsp脚本<%@pagecontentType="text/html;charset=gb2312"%><%@pageimport="java.s... 已设置$CLASSPAH
jsp脚本
<%@ page contentType="text/html;charset=gb2312"%>
<%@ page import="java.sql.*"%>
<html>
<body>
<%Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
String url="jdbc:oracle:thin:@ip:1521:SID";
String user="user";
String password="passwd";
Connection conn=DriverManager.getConnection(url,user,password);
Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
String sql="select count(*) from tab";
ResultSet rs=stmt.executeQuery(sql);
while(rs.next())
{%>
您的第一个字段内容为:<%=rs.getString(1)%>
<%}%>
<%out.print("数据库操作成功,恭喜你");%>

<%rs.close();
stmt.close();
conn.close();
%>
</body>

错误信息:
description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: javax.servlet.ServletException: java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:500)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:410)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause

javax.servlet.ServletException: java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:865)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:794)
org.apache.jsp.testoracle_jsp._jspService(testoracle_jsp.java:96)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause

java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:128)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:66)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Class.java:169)
org.apache.jsp.testoracle_jsp._jspService(testoracle_jsp.java:59)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

设置了CLASSPATH .:/lib:/lib:/tomcat6/bin:/tomcat6/lib/servlet-api.jar:/users/oracle/db01/app/oracle/product/8.1.7/jdbc/lib/classes12.zip
我用的是ORACLE 8.17 JDK1.6
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package com.shengsiyuan2;

import java.util.Iterator;
import java.util.Map;
import java.util.TreeMap;

public class TreeMapTest1 {
public static void main(String[] args) {
TreeMap map = new TreeMap();
map.put("a", "AA");
map.put("b", "BB");
map.put("c", "CC");
System.out.println("方法一");
Iterator it = map.entrySet().iterator();
while (it.hasNext()) {
Map.Entry entry = (Map.Entry) it.next();
Object key = entry.getKey();
Object value = entry.getValue();
System.out.println("key=" + key + " value=" + value);
}
}
}
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