JDBC连接Oracle数据库类

JDBC连接Oracle数据库类：

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

/**
 * JDBC连接Oracle
 * 
 * @author
 * 
 */
public class JDBCConnUtils {

	private static final String DRIVER = "oracle.jdbc.OracleDriver";
	private static final String URL = "jdbc:oracle:thin:@127.0.0.1:1521:orcl";
	private static final String USERNAME = "xue";
	private static final String PASSWORD = "admin";

	/**
	 * 获得连接
	 * 
	 * @return Connection
	 */
	public static Connection getConn() {
		Connection conn = null;
		try {
			Class.forName(DRIVER);
			conn = DriverManager.getConnection(URL, USERNAME, PASSWORD);
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		} catch (SQLException e) {
			e.printStackTrace();
		}
		return conn;
	}

	/**
	 * 关闭资源
	 * 
	 * @param rs
	 * @param st
	 * @param conn
	 */
	public static void closeALl(ResultSet rs, PreparedStatement st,
			Connection conn) {
		if (rs != null) {
			try {
				rs.close();
				rs = null;
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		if (st != null) {
			try {
				st.close();
				st = null;
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		if (conn != null) {
			try {
				conn.close();
				conn = null;
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
	}

}