关于Java加载druid.properties配置文件Inputstream为null的问题

Idea加载配置文件需放入resources文件目录下，后代码中根据反射机制使用

类名.class.getClassLoader().getResourceAsStream("driuid.properties")得到InputStream流即可。

具体如下图：

public class DruidUtils {

    private static DruidDataSource druidDataSource;

    static {

        try {
            InputStream is = DruidUtils.class.getClassLoader().getResourceAsStream("druid.properties");
            Properties properties = new Properties();
            properties.load(is);
            druidDataSource = (DruidDataSource) DruidDataSourceFactory.createDataSource(properties);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static DataSource getDataSource() {
        return druidDataSource;
    }

    public static Connection getConnection() {
        Connection connection = null;
        try {
            connection = druidDataSource.getConnection();
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return connection;
    }
}