如何检索AMD的Dojo的XHR响应代码（+时间戳）？ [英] How to retrieve XHR response code (+timestamp) of AMD'ized Dojo?

问题描述

使用旧Dojo可以将第二个参数 ioargs 传递给Xhr请求的 load 函数（请参阅此处的示例6）。这个 ioargs 提供了（除其他外）请求的时间戳和状态代码。

With the "old" Dojo one could pass a second argument ioargs to the load function of a Xhr request (see Example 6 here). This ioargs provided (among other things) the timestamp and status code of the request.

但是如何实现这与新的和更清洁（和向前兼容）Dojo？

不幸的是，我在当前文档。

But how can I achieve this with the new and "cleaner" (and forward compatible) Dojo?
Unfortunately, I could not find any hints in the current documentation.

以下应该是上面引用的例子的端口到新的Dojo。但是， ioargs 将是未定义的：

The following should be a port of above referenced example to the "new" Dojo. But, ioargs will be undefined:

require( "dojo/request/xhr", "dojo/dom", "dojo/domReady!",
  function(request, dom){
    // Look up the node we'll stick the text under.
    var targetNode = dom.byId("getLicenseStatus");

    // The parameters to pass to xhrGet, the url, how to handle it, and the callbacks.
    request.get(
      "{{dataUrl}}dojo/LICENSE",
      {
        handleAs: "text",
        preventCache: true
      }
    ).then(
      function(data, ioargs){
        // FIXME: ioargs is undefined
        targetNode.innerHTML = "XHR returned HTTP status: " + ioargs.xhr.status;
      },
      function(error){
        targetNode.innerHTML = "An unexpected error occurred: " + error.response.status + ": " + error.response.text;
      }
    );
  }
);

需要更改什么才能在加载功能中使请求的时间戳和状态代码可用？ / p>

What do I need to change to have the request's timestamp and status code available in the load function?

推荐答案

请求返回一个特殊的 promise （来源）：

从dojo /请求呼叫返回的承诺有一个额外的属性不可用于标准承诺：响应。该属性是一个承诺，将解决一个冻结的对象（如果可用）更详细地描述响应：

Promises returned from dojo/request calls have an additional property not available on standard promises: response. This property is a promise that will resolve to a frozen object (where available) describing the response in more detail:

• url - 最终使用的URL （请附带查询字符串）


• 选项 - 用于进行请求的选项对象


• text - 文本中的数据的字符串表示形式回复


• 数据 - 响应中处理的数据（如果指定了句柄）


• getHeader（headerName） - 一个函数，用于从请求;如果提供者不提供标题信息，则此函数将返回null。

• url – final URL used to make the request (with query string appended)
• options – options object used to make the request
• text – string representation of the data in the response
• data – the handled data in the response (if handleAs was specified)
• getHeader(headerName) – a function to get a header from the request; if a provider doesn’t provide header information, this function will return null.

所以你应该链接 .then 到 promise.response 以访问所有上述属性：

So you should chain .then to this promise.response to get access to all the aforementioned properties:

var promise = request.get("{{dataUrl}}dojo/LICENSE");

promise.response.then(function(response) {
    console.log("status", response.status);
    console.log("url", response.url);
    console.log("data", response.data);
});

查看jsFiddle中的一个工作示例： http://jsfiddle.net/phusick/6wB2L/

See a working example at jsFiddle: http://jsfiddle.net/phusick/6wB2L/

这篇关于如何检索AMD的Dojo的XHR响应代码（+时间戳）？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！