web程序时,放在 非web程序,放在src下
扩展名为properties;格式为key=value,key一般使用 . 隔开,value不支持中文;
- 直接加载bundle
1 private static String driver ; 2 private static String url ; 3 private static String username ; 4 private static String password ; 5 static{ 6 ResourceBundle bundle = ResourceBundle.getBundle("db"); 7 driver = bundle.getString("driver"); 8 url = bundle.getString("url"); 9 username = bundle.getString("username"); 10 password = bundle.getString("password"); 11 }
- 加载文件流
1 private static String driver ; 2 private static String url ; 3 private static String username ; 4 private static String password ; 5 static{ 6 try { 7 //1.通过当前类获取类的加载器 8 ClassLoader loader = JDBCUtils_V3.class.getClassLoader(); 9 //2.通过加载器方法获得输入流 10 InputStream is = loader.getResourceAsstream("db.properties"); 11 //3.创建properties对象 12 Properties properties = new Properties(); 13 //4.加载输入流 14 properties.load(is); 15 //5.获取配置文件的信息 16 driver = properties.getProperty("driver"); 17 url = properties.getProperty("url"); 18 username = properties.getProperty("username"); 19 password = properties.getProperty("password"); 20 } catch (IOException e) { 21 // Todo Auto-generated catch block 22 e.printstacktrace(); 23 } 24 }