import `dart:io`; final HOST = 127.0.0.1; // eg: localhost final PORT = 8080; //porta final DATA_FILE = data.json; // arquivo json void main() { HttpServer.bind(HOST, PORT).then((server) { server.listen((HttpRequest request) { switch (request.method) { case GET: handleGet(request); break; case POST: handlePost(request); break; case OPTIONS: handleOptions(request); break; default: defaultHandler(request); } }, onError: printError); print(listando GET e POST de http://$HOST:$PORT); }, onError: printError); } void handleGet(HttpRequest req) { HttpResponse res = req.response; print(${req.method}: ${req.uri.path}); addCorsHeaders(res); var file = new File(DATA_FILE); if (file.existsSync()) { res.headers.add(HttpHeaders.CONTENT_TYPE, application/json); file.readAsBytes().asStream().pipe(res); // fecha o arquivo } else { var err = Could not find file: $DATA_FILE; res.addString(err); res.close(); } } void handlePost(HttpRequest req) { HttpResponse res = req.response; print(${req.method}: ${req.uri.path}); addCorsHeaders(res); req.listen((List buffer) { var file = new File(DATA_FILE); var ioSink = file.openWrite(); // salva dados no arquivo ioSink.add(buffer); ioSink.close(); // retorno res.add(buffer); res.close(); }, onError: printError); } void addCorsHeaders(HttpResponse res) { res.headers.add(Access-Control-Allow-Origin, *); res.headers.add(Access-Control-Allow-Methods, POST, GET, OPTIONS); res.headers.add(Access-Control-Allow-Headers, Origin, X-Requested-With, Content-Type, Accept); } void handleOptions(HttpRequest req) { HttpResponse res = req.response; addCorsHeaders(res); print(${req.method}: ${req.uri.path}); res.statusCode = HttpStatus.NO_CONTENT; res.close(); } void defaultHandler(HttpRequest req) { HttpResponse res = req.response; addCorsHeaders(res); res.statusCode = HttpStatus.NOT_FOUND; res.addString(Not found: ${req.method}, ${req.uri.path}); res.close(); } void printError(error) => print(error); ©