对 ASP .NET 网站的 jQuery JSON 调用在 IE 中成功，但在 Firefox 或 Chrome 中失败

发布于 2024-11-01 06:03:20 字数 756 浏览 1 评论 0原文

我使用以下 jQuery 从 ASP .NET 网站获取 JSON：

$.ajax({
  type: 'POST',
  url: '/blah/default.aspx/GetTestData',
  contentType: 'application/json; charset=utf-8',
  dataType: 'json',
  success: function(output) {
      var viewModel = $.parseJSON(output.d);
      ko.applyBindings(viewModel);
}

});

然后使用 Knockout 库来更新我的 UI。 default.aspx中获取数据的服务器端代码如下。

[WebMethod]
public static string GetTestData()
{
    var viewModel = null; // Get viewModel data from elsewhere.
    return new JavaScriptSerializer().Serialize(viewModel);
}

这在 IE 中工作正常，但当我在 Chrome 和 Firefox 中尝试时，JSON 不会返回。我的断点服务器端确实被击中，因此正在调用 Web 方法，但当它返回到浏览器时发生了一些事情。

我认为这可能与在浏览器或网络服务器端设置内容或 MIME 类型有关，但我还没有任何运气，有人有任何建议吗？

原文

I'm fetching JSON from my ASP .NET website using the following jQuery:

$.ajax({
  type: 'POST',
  url: '/blah/default.aspx/GetTestData',
  contentType: 'application/json; charset=utf-8',
  dataType: 'json',
  success: function(output) {
      var viewModel = $.parseJSON(output.d);
      ko.applyBindings(viewModel);
}

});

And then using the Knockout library to update my UI. The server-side code in default.aspx to get the data is as follows.

[WebMethod]
public static string GetTestData()
{
    var viewModel = null; // Get viewModel data from elsewhere.
    return new JavaScriptSerializer().Serialize(viewModel);
}

This works fine in IE but when I try in Chrome and Firefox the JSON does not get returned. My breakpoint server-side does get hit so the web method is being called, but something is happening when it comes back to the browser.

I think it might be related to setting content or MIME types at either the browser or webserver end but I've not had any luck yet, does anyone have any suggestions?

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⒈起吃苦の倖褔 2024-11-08 06:03:20

实际上，您可以通过让页面方法返回对象来避免序列化和解析。

因此，它看起来像：

[WebMethod]
public static ViewModel GetTestData()
{
    var viewModel = createOrGetMyViewModelObjectFromSomewhere();
    return viewModel;
}

在 JavaScript 端，它看起来像：

$.ajax({
    type: 'POST',
    url: '/blah/default.aspx/GetTestData',
    data: "{}",
    contentType: 'application/json; charset=utf-8',
    dataType: 'json',
    success: function (output) {
        var viewModel = output.d;
        ko.applyBindings(viewModel);
    }
});

因此，您不需要在 .NET 中序列化它，也不需要在客户端解析它。这一切都由两侧的“管道”处理。此外，传递 data: "{}" 也很重要（或者如果您需要参数，它们会放在这里）。

另外，如果您调用的是 Web 服务而不是页面方法，那么您需要使用 [ScriptService] 属性来修饰该类。

You can actually avoid the serialization and parsing by having your Page Method just return your object.

So, it would look like:

[WebMethod]
public static ViewModel GetTestData()
{
    var viewModel = createOrGetMyViewModelObjectFromSomewhere();
    return viewModel;
}

On the JavaScript side, it would look like:

$.ajax({
    type: 'POST',
    url: '/blah/default.aspx/GetTestData',
    data: "{}",
    contentType: 'application/json; charset=utf-8',
    dataType: 'json',
    success: function (output) {
        var viewModel = output.d;
        ko.applyBindings(viewModel);
    }
});

So, you don't need to serialize it in .NET and you don't need to parse it on the client-side. It is all handled by the "plumbing" on both sides. Also, passing data: "{}" is important (or if you need parameters, they would go here).

Also, if you were calling a web service instead of Page Method, then you need to decorate the class with a [ScriptService] attribute.

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