Question

我正在做客户端服务器应用程序（通过带有postgrelsql的浏览器）。我创建了服务器，它在一个端口上运行。如何从服务器获取数据到客户端。客户方：

   req=new HttpRequest();
   req.open('get', 'http://127.0.0.1:8082/');
   var rr=req.send();
   print(rr);

服务器端：

      HttpServer server = await HttpServer.bind('127.0.0.1', 8082);

      await for (HttpRequest request in server) {
      request.response.headers.add("Access-Control-Allow-Origin", "*");
      request.response.headers.add("Access-Control-Allow-Methods",      "POST,GET,DELETE,PUT,OPTIONS");
      request.response.write(await consoledatabaseconnection.someList());
      handleRequest(request);
      request.response.close();
    }
   void handleRequest(HttpRequest request) {
  try {
    if (request.method == 'GET') {
      print('request get');

      request.response.write('data form server');

    } else {
      print('request others');
    }
  } catch (e) {
    print('Exception in handleRequest: $e');
  }
  print('Request handled.');
}

在服务器端，如何返回数据。

Answer 1

服务器端代码

     $(function() {  
        $( "#datepicker" ).datepicker({
            dateFormat: 'dd/mm/yy',
          changeMonth: true,
          changeYear: true
        });
      });

<input type="text" id="datepicker"></p>

客户端代码 req = new HttpRequest（）;

main(List<String> arguments) async {
  HttpServer.bind('localhost', 8085).then((server) {
    server.listen((HttpRequest request) {
      request.response.headers.add("Access-Control-Allow-Origin", "*");
      request.response.headers
          .add("Access-Control-Allow-Methods", "POST,GET,DELETE,PUT,OPTIONS");
      request.response.headers.add('Access-Control-Allow-Headers',
          'Origin, X-Requested-With, Content-Type, Accept,application/x-www-form-urlencoded');

      if (request.method == "POST") {
        List<int> dataBody = new List<int>();
        request.listen(dataBody.addAll, onDone: () async {
          query_dy = new String.fromCharCodes(dataBody);
          request.response.write(await databaseconnection('your response code here'));
          request.response.close();
        });
      }
    });
  });
}

有没有办法在dart中从服务器向客户端发送数据

1 个答案: