如何在glassfish-web.xml中读取值“ alternatedocroot_1”

Question

我正在开发JSF应用程序并将其部署到Glassfish中。 这是获取“ jdbc”连接的代码：

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: MyButton(),
        ),
      ),
    );
  }
}

class MyButton extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return DecoratedBox(
      decoration:
          ShapeDecoration(shape: CircleBorder(), color: Colors.pinkAccent),
      child: Theme(
        data: Theme.of(context).copyWith(
            buttonTheme: ButtonTheme.of(context).copyWith(
                materialTapTargetSize: MaterialTapTargetSize.shrinkWrap)),
        child: OutlineButton(
          shape: CircleBorder(),
          child: Text('A'),
          onPressed: () => {},
        ),
      ),
    );
  }
}

是否可以获取项目“ alternatedocroot_1”的“值/目录”？ 这是glassfish-web.xml的内容：

Context initCtx = new InitialContext();
dataSource = (DataSource) initCtx.lookup("jdbc/hr-demo");

非常感谢你， VinhCC