如何在Dart中使用HttpServer服务文件

Question

我的Dart应用程序有以下标准结构:

/
  pubspec.yaml
  web/
    main.css
    main.dart
    main.html
  build.dart
  server.dart

当我在服务器上收到GET请求时,我希望服务器以webroot 身份使用该目录,并将文件内容提供给客户端.

我怎样才能做到这一点？

这是到目前为止我已经走了多远:

import 'dart:io';

void main() {
    HttpServer.bind('127.0.0.1', 80).then((HttpServer server) {
      server.listen((request) { 
        print("got request");

        switch (request.method) {
          case 'GET':
            // Do I need to send the file here? ... 
            // if not fount then send HttpStatus.NOT_FOUND;
            break;

          default:

        }
      });
    });
}

Answer 1

这是Matt B回答后我的代码的最新版本:

import 'dart:io';
import 'package:path/path.dart' as path;

String _basePath;

_sendNotFound(HttpResponse response) {
  response.write('Not found');
  response.statusCode = HttpStatus.NOT_FOUND;
  response.close();
}


_handleGet(HttpRequest request) {
  // PENDING: Do more security checks here?
  final String stringPath = request.uri.path == '/' ? '/main.html' : request.uri.path;
  final File file = new File(path.join(_basePath, stringPath));
  file.exists().then((bool found) {
    if (found) {
      file.openRead().pipe(request.response).catchError((e) { });
    } else {
      _sendNotFound(request.response);
    }
  });
}


_handlePost(HttpRequest request) {

}


void main() {
  _basePath = Platform.environment['HOME'];

  HttpServer.bind('127.0.0.1', 80).then((HttpServer server) {
    server.listen((request) { 
      switch (request.method) {
        case 'GET':
          _handleGet(request);
          break;

        case 'POST':
          _handlePost(request);
          break;

        default:
          request.response.statusCode = HttpStatus.METHOD_NOT_ALLOWED;
          request.response.close();
      }
    });
  });
}