Question

我要求浏览器使用ajax将JSON数据POST到流v0.5.5服务器。在服务器端，如何从ajax请求中接收数据？

我的客户:(谷歌浏览器）

void ajaxSendJSON() {
  HttpRequest request = new HttpRequest(); // create a new XHR

  // add an event handler that is called when the request finishes
  request.onReadyStateChange.listen((_) {
    if (request.readyState == HttpRequest.DONE &&
      (request.status == 200 || request.status == 0)) {
      // data saved OK.
      print(request.responseText); // output the response from the server
    }
  });

  // POST the data to the server
  var url = "/news";
  request.open("POST", url, true);
  request.setRequestHeader("Content-Type", "application/json");
  request.send(mapTOJSON()); // perform the async POST
}

String mapTOJSON() {
  print('mapping json...');
  var obj = new Map();
  obj['title'] = usrTitle.value == null ? "none" : usrTitle.value;
  obj['description'] = usrDesc.value == null ? "none" : usrDesc.value;
  obj['photo'] = usrPhoto.value == "none";
  obj['time'] = usrTime==null ? "none" : usrTime.value; 
  obj['ip']= '191.23.3.1';
  //obj["ip"] = usrTime==null? "none":usrTime; 
  print('sending json to server...');
  return Json.stringify(obj); // convert map to String i.e. JSON
  //return obj;
}

我的服务器：

void serverInfo(HttpConnect connect) {
  var request = connect.request;
  var response = connect.response;
  if(request.uri.path == '/news' && request.method == 'POST') {
    response.addString('welcome from the server!');
    response.addString('Content Length: ');
    response.addString(request.contentLength.toString());
  } else {
    response.addString('Not found');
    response.statusCode = HttpStatus.NOT_FOUND;
  }
  connect.close();
}

同样，我不希望浏览器从服务器请求数据！我在做什么是要求浏览器通过ajax提交JSON数据，我只是不知道服务器（Rikulo Stream v0.5.5）如何获取数据的“内容”？所有代码均使用Google Dart Language M3编写。没有Javascript！

Answer 1

Dart SDK不支持POST，但Dart团队计划对其进行增强。请加注它here: issue 2488。

另一方面，由于您处理的是JSON，您可以收听HttpRequest（我假设最新的SDK）并将List转换为String然后再转换为JSON。 Rikulo Commons提供了一个简化工作的实用程序，如下所示：

import "package:rikulo_commons/io.dart";

IOUtil.readAsJson(request, onError: connect.error).then((jsonValue) {
   //handle it here
});

如何访问从浏览器发送到Rikulo Steam服务器的POST数据

1 个答案: