jquery - 内容类型无法通过 AJAX Post 发送到服务器

Question

我在将 JSON 发布到服务器时遇到问题，因为 AJAX 不知何故放弃了内容类型。[使用此库][1] 以及 Jquery 和 Bootstrap 我发现了问题:

• Curl 适用于帖子，并在内容为 JSON 时在 Flask 应用中检索成功。
• 经过多种方法和途径后，post 可以进入应用程序，但 ContentType 无法与 JSON 一起传输
• 尝试了多种方法来格式化 JSON，但内容类型均无法识别。使用

这是 AJAX 代码:

var items;

$('#orderform').on('submit',function () {
    console.log(items);
    $.ajax({
        url: "/order",
        type: "POST",
        data: JSON.stringify({"order": '555'}),
        contentType: "application/json; charset=utf-8",
        dataType: "text/html; charset=utf-8",
        success: function(result) {
        var data = "Check";
        }
    });

编辑:这是内容类型:应用程序/x-www-form-urlencoded

编辑2:使用网页的绝对路径作为URL，我发现它在回发到服务器时收到405，未分配内容 header 。

编辑 3:这是 JSFiddle:

var order;
var adjustment;

var group = $("ol.simple_with_animation").sortable({
  group: 'simple_with_animation',
  pullPlaceholder: false,
  // animation on drop
  onDrop: function($item, container, _super) {

    var $clonedItem = $('<li/>').css({
      height: 0
    });
    $item.before($clonedItem);
    $clonedItem.animate({
      'height': $item.height()
    });

    $item.animate($clonedItem.position(), function() {
      $clonedItem.detach();
      _super($item, container);
    });
    var data = group.sortable("serialize").get();
    order = data[1];
    console.log(order);
  },

  // set $item relative to cursor position
  onDragStart: function($item, container, _super) {
    var offset = $item.offset(),
      pointer = container.rootGroup.pointer;

    adjustment = {
      left: pointer.left - offset.left,
      top: pointer.top - offset.top
    };

    _super($item, container);
  },
  onDrag: function($item, position) {
    $item.css({
      left: position.left - adjustment.left,
      top: position.top - adjustment.top
    });
  },
  serialize: function(parent, children, isContainer) {
    return isContainer ? children.join() : parent.text();
  },
  tolerance: 6,
  distance: 10
});

$(document).ready(function() {

  $(':button').on('click', function() {
    console.log(order);
    $.ajax({
      url: "http://ec2-54-244-61-189.us-west-2.compute.amazonaws.com/order",
      type: "POST",
      cache: false,
      dataType: "json",
      contentType: "application/json; charset=utf-8",
      data: JSON.stringify({
        "info": order
      }),
      async: false,
      success: function(result) {
        window.location.href = result.redirect;
      },
      error: function(xhr, status, error) {
        var err = eval("(" + xhr.responseText + ")");
        alert(err.Message);
      }
    });
  }); //END mybutton click

}); //END document.read

body.dragging,
body.dragging * {
  cursor: move !important;
}

.dragged {
  position: absolute;
  opacity: 0.5;
  z-index: 2000;
}

ol.simple_with_animation li.placeholder {
  position: relative;
  /** More li styles **/
}

ol.simple_with_animation li.placeholder:before {
  position: absolute;
  /** Define arrowhead **/
}

#GamblerOrderSource,
#GamblerOrderTarget {
  min-height: 50px;
  margin: 0px 25px 10px 0px;
  padding: 2px;
  border-width: 1px;
  border-style: solid;
  -webkit-border-radius: 3px;
  -moz-border-radius: 3px;
  border-radius: 3px;
  list-style-type: none;
  list-style-position: inside;
}

#GamblerOrderSource {
  border: 2px dashed #f8e0b1 !important;
  background-color: #fefcf5 !important;
}

#GamblerOrderTarget {
  border: 2px dashed #add38d !important;
  background-color: #f6fbf4 !important;
}

#GamblerOrderSource li {
  background-color: #fcf8e3;
  border: 1px solid #fbeed5;
  color: #c09853;
}

#GamblerOrderTarget li {
  background-color: #ebf5e6;
  border: 1px solid #d6e9c6;
  color: #468847;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-sortable/0.9.13/jquery-sortable-min.js"></script>
<form id="orderform" method='POST'>
  <div id='GamblerOrderSource'>
    <ol class='simple_with_animation'>
      <li>First</li>
      <li>Second</li>
      <li>Third</li>
    </ol>
  </div>
  <div id='GamblerOrderTarget'>
    <ol class='simple_with_animation'>
      <li>First</li>
      <li>Second</li>
      <li>Third</li>
    </ol>
  </div>
  <input type="submit" value="Continue" />
</form>

乐

Answer 1

使用dataType: 'json'发送json数据。您没有在服务器上发送 json 数据。您需要更改dataType以发送json数据

尝试使用这个ajax代码，如果它已经是正确的对象，则无需对json对象进行字符串化。我已经在我身边测试过了，希望对你有帮助。

$.ajax({
 type:"POST",
 url: "YOUR PATH TO FILE OR METHOD",
 data:{
  order:'555'
 },
 dataType: 'json',
  success: function(data){
    if(data['success']=='true'){
     echo 'success';
    }else{
    if(data['success']=='false'){
     echo 'not success';
    }
   }
  }, 
  error: function(xhr, status, error) {
   console.log(status);
   console.log(error);
  }
});