1 public Connection getConnection2() throws Exception { 2         // 准备连接数据库的四个字符串 3         // 驱动的全类名 4         String driverClass = null; 5         String jdbcUrl = null; 6         String user = null; 7         String password = null; 8  9         // 读取类路径下的 jdbc.properties 文件10         InputStream in = getClass().getClassLoader().getResourceAsStream("jdbc.properties");11         Properties properties = new Properties();12         properties.load(in);13         driverClass = properties.getProperty("driver");14         jdbcUrl = properties.getProperty("jdbcUrl");15         user = properties.getProperty("user");16         password = properties.getProperty("password");17 18         // 加载数据库驱动程序(注册驱动)19         // DriverManager.registerDriver((Driver)20         // Class.forName(driverClass).newInstance());21         // 实际上一步可以省略，因为DriverManager实现类中有一段静态代码块，可以直接注册驱动22         Class.forName(driverClass);23 24         Connection connection = DriverManager.getConnection(jdbcUrl, user, password);25         return connection;26     }

1 @Test2     public void testGetConnection2() throws Exception{3         System.out.println(getConnection2());4     }

com.mysql.jdbc.JDBC4Connection@1556938