Java中JDBC連接數據庫代碼

public class DBUtil {
	// 連接對象
	private Connection conn = null;
	// SQL語句處理對象
	PreparedStatement ps = null;
	// 結果集對象
	ResultSet rs = null;

	/**
	 * 連接數據庫
	 * 
	 * @return Connection
	 */
	public Connection getConnection() {
		// 數據庫連接基本信息
		String Driver = "com.mysql.jdbc.Driver";
		String dbName = "laozhao";
		String dbUserName = "root";
		String dbUserPwd = "";
		String url = "jdbc:mysql://localhost:3306/" + dbName
				+ "?characterEncoding=utf8";
		try {
			// 加載驅動
			Class.forName(Driver);
			// 連接
			conn = DriverManager.getConnection(url, dbUserName, dbUserPwd);
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return conn;
	}

	/**
	 * 關閉數據庫
	 */
	public void closeConnection() {
		// 判斷連接不爲空則關閉
		try {
			if (this.rs != null) {
				this.rs.close(); // 關閉結果集
			}
			if (this.ps != null) {
				this.ps.close(); // 關閉SQL預處理對象
			}
			if (this.conn != null) {
				this.conn.close(); // 關閉連接
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}
}