Java链接Oracle数据库

Java链接Oracle数据库

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

public class OracleDAO {
	private String ip = null;
	private String port = null;
	private String database = null;
	private String user = null;
	private String password = null;
	private Connection con = null;

	/**
	 * 
	 * @param ip
	 * @param port
	 * @param database
	 * @param user
	 * @param password
	 */
	public OracleDAO(String ip, String port, String database, String user, String password) {
		this.ip = ip;
		this.port = port;
		this.database = database;
		this.user = user;
		this.password = password;
	}

	/**
	 * 
	 * @return Connection
	 */
	public Connection getOracleConnection() {
		int time = 0;
		String url = "jdbc:oracle:thin:@" + ip + ":" + port + ":" + database + "";
		;
		try {
			for (; (++time < 3) && (con == null || con.isClosed());) {
				Class.forName("oracle.jdbc.driver.OracleDriver");
				con = DriverManager.getConnection(url, user, password);
				System.out.println("Get Oracle database connection OK.");
			}
		} catch (Exception e) {
			System.err.println("Cannot get Oracle database connection.");
			e.printStackTrace();
		}
		return con;
	}

	/**
	 * 
	 * @param con
	 *            Connection
	 * @return
	 */
	public boolean closeOracleResource(Connection con) {
		return closeOracleResource(con, null, null);
	}

	/**
	 * 
	 * @param ps
	 *            Statement
	 * @return
	 */
	public boolean closeOracleResource(Statement ps) {
		return closeOracleResource(null, ps, null);
	}

	/**
	 * 
	 * @param rs
	 *            ResultSet
	 * @return
	 */
	public boolean closeOracleResource(ResultSet rs) {
		return closeOracleResource(null, null, rs);
	}

	/**
	 * 
	 * @param con
	 *            Connection
	 * @param ps
	 *            Statement
	 * @return
	 */
	public boolean closeOracleResource(Connection con, Statement ps) {
		return closeOracleResource(con, ps, null);
	}

	/**
	 * 
	 * @param ps
	 *            Statement
	 * @param rs
	 *            ResultSet
	 * @return
	 */
	public boolean closeOracleResource(Statement ps, ResultSet rs) {
		return closeOracleResource(null, ps, rs);
	}

	/**
	 * 
	 * @param con
	 *            Connection
	 * @param rs
	 *            ResultSet
	 * @return
	 */
	public boolean closeOracleResource(Connection con, ResultSet rs) {
		return closeOracleResource(con, null, rs);
	}

	/**
	 * 
	 * @param con
	 *            Connection
	 * @param ps
	 *            Statement
	 * @param rs
	 *            ResultSet
	 * @return
	 */
	public boolean closeOracleResource(Connection con, Statement ps, ResultSet rs) {
		try {
			if (con != null)
				con.close();
			if (ps != null)
				ps.close();
			if (rs != null)
				rs.close();
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
	}
}