Java访问Oracle数据库示例-优快云博客

第一步：加载数据库驱动程序

mySql-------Class.forName("com.mysql.jdbc.Driver");

Oracle------Class.forName("oracle.jdbc.driver.OracleDriver);

......

第二步：链接数据库

Connection con=DriverManager.getConnection(url,user,pwd);

第三步：创建一个JDBC声明

Statement stmt=con.createStatement();

第四步：访问数据库

实例：

<%@page import="java.sql.*"%>
<%@ page language="java" contentType="text/html; charset=GB2312"
pageEncoding="GB2312"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB2312">
<title>Insert title here</title>
</head>
<body>
<%
request.setCharacterEncoding("GB2312");
Class.forName("oracle.jdbc.driver.OracleDriver");
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
String user = "dbsnmp";
String password = "dbsnmp";
Connection conn = DriverManager.getConnection(url,user,password);
Statement stmt = conn.createStatement();
String sql = "select * from mytest2";
ResultSet rs = stmt.executeQuery(sql);

while(rs.next()){
%>
一：<%=rs.getString(1) %>
二:<%=rs.getString(2) %><br>
<%

}
out.print("success!");
rs.close();
stmt.close();
conn.close();

%>
</body>
</html>

JSP访问数据库学习笔记