基于Oracle的JDBC连接教程

package util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class JdbcUtil {
	public static Connection getConnection(){
		Connection conn = null;
		String url="jdbc:oracle:thin:@localhost:1521:orcl";  //连接数据库的url
		String password = "1234";  //数据库的密码
		String user = "haha";	//数据库的用户名
		
		try {
			Class.forName("oracle.jdbc.OracleDriver");	//反射机制，加载类驱动
			conn = DriverManager.getConnection(url, user, password);	//通过DriverManager过的连接
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		} catch (SQLException e) {
			e.printStackTrace();
		}
		
		return conn;
	}
}