Java--使用类加载器加载配置文件

username=tom
password=root

    
    @Test
    public void test3() throws IOException {
        Properties properties = new Properties();

        //读取配置文件，配置文件默认在项目工程的src目录下
        ClassLoader classLoader = ReflectionTest.class.getClassLoader();
        InputStream resourceAsStream = classLoader.getResourceAsStream("jdbc.properties");
        properties.load(resourceAsStream);

        String username = properties.getProperty("username");
        String password = properties.getProperty("password");

        System.out.println("username = " + username);
        System.out.println("password = " + password);

        if (resourceAsStream != null) {
            resourceAsStream.close();
        }
    }
运行结果：
  username = tom
  password = root