jdbc连接数据库问题
我的代码：<%@ page language="java" contentType="text/html; charset=GB2312" pageEncoding="GB2312"%>
<%@ page import="java.util.*" %>
<%@ page import="java.sql.*" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB2312">
<title>创建数据库</title>
</head>
<body ><font size=2>
<%
try{
Class.forName("oracle.jdbc.driver.OracleDriver"); //载入JDBC驱动程序
String strCon = "jdbc:oracle:this:@localhost:1521: JspSamples"; ; //连接字
Connection conn = DriverManager.getConnection(strCon); //连接数据库
Statement stmt = conn.createStatement(); //初始化查询
String sql = "create database JspSamples"; //创建数据库
int ret = stmt.executeUpdate(sql); //执行创建数据库
String sql = "use JspSamples"; //选择数据库
int ret = stmt.executeUpdate(sql); //执行选择数据库
String sql = " CREATE TABLE customers(" + //创建表
" Id int(6) unsigned NOT NULL auto_increment," +
" Name varchar(20) default NULL," +
" addTime timestamp NULL default NULL," +
" Tel varchar(15) default NULL," +
" Email varchar(20) default NULL," +
" PRIMARY KEY (Id)" +
" )";
int ret = stmt.executeUpdate(sql); //执行创建表
}
catch(ClassNotFoundException e){ //意外处理，驱动程序无法找到
e.printStackTrace();
out.println("<h1>无法找到数据库驱动</h1>");
}
catch(SQLException e1){ //意外处理，数据库操作失败
e1.printStackTrace();
out.println("<h1>数据库操作失败</h1>");
}
out.println("<h1>新建数据库JspSamples成功</h1>");
DatabaseMetaData meta = conn.getMetaData(); //获取数据库信息
out.println("<br>");
out.println("连接字：" + meta.getURL()); //获取连接字
out.println("<br>");
out.println("数据库产品：" + meta.getDatabaseProductName()); //获取数据库产品名
out.println("<br>");
out.println("数据库版本：" + meta.getDatabaseProductVersion() ); //获取数据库产品版本
out.println("<br>");
out.println("驱动程序：" + meta.getDriverName() ); //获取数据库驱动名
out.println("<br>");
out.println("驱动程序版本：" + meta.getDriverVersion() ); //获取数据库驱动版本
stmt.close(); //关闭查询
conn.close(); //关闭连接
%>
</font>
</body>
</html>
可是老提示
An error occurred at line: 11 in the jsp file: /Ex5_1.jsp
conn cannot be resolved
8: <title>创建数据库</title>
9: </head>
10: <body ><font size=2>
11: <%
12: try{
13:
14: Class.forName("oracle.jdbc.driver.OracleDriver"); //载入JDBC驱动程序
Stacktrace:
org.apache.(DefaultErrorHandler.java:85)
org.apache.(ErrorDispatcher.java:330)
org.apache.(JDTCompiler.java:415)
org.apache.(Compiler.java:308)
org.apache.(Compiler.java:286)
org.apache.(Compiler.java:273)
org.apache.jasper.(JspCompilationContext.java:566)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:308)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.10 logs.
老大们帮帮我，小弟谢了！
