数据库连接池

加载配置文件

        

        Properties pro = new Properties();
        InputStream is = FirstServlet.class.getClassLoader().getResourceAsStream("druid.properties");
        pro.load(is);
        Connection conn = null;
        try {
            DataSource ds = DruidDataSourceFactory.createDataSource(pro);
            conn = ds.getConnection();
        } catch (Exception e) {
            e.printStackTrace();
        }

        System.out.println(conn);