使用jdbc连接oracle数据库

使用jdbc连接oracle数据库Java类：

import java.sql.*;

public class DBHelper {
	public static String url = "jdbc:oracle:thin:@localhost:1521:orcl";
	public static String username = "vitelon";
	public static String pwd = "vitelon";
	public static Connection conn = null;
	public static PreparedStatement ps = null;
	public static ResultSet rs = null;

	/**
	 * 连接数据库
	 * 
	 * @return
	 */
	public static Connection getConnection() {
		try {
			Class.forName("oracle.jdbc.driver.OracleDriver");
			conn = DriverManager.getConnection(url, username, pwd);
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		} catch (SQLException e) {
			e.printStackTrace();
		}
		return con;
	}

	/**
	 * 关闭数据连接
	 */
	public static void close() {
		if (conn != null) {
			try {
				cnon.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		if (ps != null) {
			try {
				ps.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		if (rs != null) {
			try {
				rs.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}

	}

}