Question

您好我正在尝试创建一个Web应用程序，您可以通过Web浏览器访问系统上的文件。 Web应用程序结构如下所示：

指挥官

  cmdr
       packages
       lib
       cmdr.dart

  gui
      packages
      web
            assets
            css
            console.dart
            editor.dart
            client.dart
            explorer.dart
            index.html

cmdr.dart是服务器，我在那里发起http_server来托管index.html。索引将client.dart文件作为脚本拉出。 editor.dart，console.dart和explorer.dart文件都是客户端文件的一部分。

问题是当我运行http_server到主机index.html时，它无法访问客户端文件。除CSS文件外，大多数依赖项都没有被删除。此外，我认为可能编译成javascript会解决这个问题，因为它会将所有代码合并到一个文件中。但是，存在将HTML放在一起但没有创建任何客户端组件的相同问题。

我的服务器代码如下：

// Setting up Virtual Directory

VirtualDirectory virDir;

void directoryHandler(dir, request) {
  var indexUri = new Uri.file(dir.path).resolve('index.html');
  virDir.serveFile(new File(indexUri.toFilePath()), request);
}

void main(List<String> args) {
  // Set default dir as current working directory.
  Directory dir = Directory.current;

  // Creating Virtual Directory
  virDir = new VirtualDirectory(Platform.script.resolve('/Users/donghuynh/git/commander/gui/web').toFilePath())
      ..allowDirectoryListing = true
      ..directoryHandler = directoryHandler
      ..followLinks = true;

  // Set up logging.
  log = new Logger('server');
  Logger.root.onRecord.listen(new SyncFileLoggingHandler("server.log"));

  // Create an args parser to override the workspace directory if one is supplied.
  var parser = new ArgParser();
  parser.addOption('directory', abbr: 'd', defaultsTo: Directory.current.toString(), callback: (directory) {
    dir = new Directory(directory);
  });
  parser.parse(args);

  // Initialize the DirectoryWatcher.
  watcher = new DirectoryWatcher(dir.path);

  // Set up an HTTP webserver and listen for standard page requests or upgraded
  // [WebSocket] requests.
  HttpServer.bind(InternetAddress.ANY_IP_V4, 8080).then((HttpServer server) {
    log.info("HttpServer listening on port:${server.port}...");
    server.listen((HttpRequest request) {
      // WebSocket requests are considered "upgraded" HTTP requests.
      if (WebSocketTransformer.isUpgradeRequest(request)) {
        log.info("Upgraded ${request.method} request for: ${request.uri.path}");
        WebSocketTransformer.upgrade(request).then((WebSocket ws) {
          handleWebSocket(ws, dir);
        });
      } else {
        log.info("Regular ${request.method} request for: ${request.uri.path}");
        // TODO: serve regular HTTP requests such as GET pages, etc.
        virDir.serveRequest(request);
      }
    });
  });
}

通过网络浏览器访问index.html我收到了以下错误：

http://localhost:8080/packages/bootjack/css/bootstrap.min.css Failed to load resource: the server responded with a status of 404 (Not Found)
http://localhost:8080/packages/ace/src/js/ext-language_tools.js Failed to load resource: the server responded with a status of 404 (Not Found)
http://localhost:8080/packages/ace/src/js/ace.js Failed to load resource: the server responded with a status of 404 (Not Found)
http://localhost:8080/packages/browser/dart.js Failed to load resource: the server responded with a status of 404 (Not Found)
http://localhost:8080/packages/bootjack/css/bootstrap.min.css Failed to load resource: the server responded with a status of 404 (Not Found)

文件实际存在于这些位置（虽然是sym链接的）但是由于某种原因它们没有被拉出。

-Don

Answer 1

据我记得，您需要将另一个参数传递给VirtualDirectory以遵循符号链接。

你不应该直接为Dart源提供服务，而是来自pub build的输出（至少用于制作）。对于开发，将请求转发到正在运行的pub serve实例可能是更好的，也是官方建议的方式。

Dart http_server服务于index.html但没有提取依赖关系

1 个答案: