我怎样的WebAPI处理JSONP？

问题描述

可能重复：结果
  

我有我的WebAPI一个get方法，该方法如下：

I have a get method for my WebAPI which is as follows:

    private T Get<T>(string uri)
    {
        T result = default(T);
        bool isSuccess = true;

        client
            .GetAsync(uri)
            .ContinueWith(task =>
            {
                // EnsureStatus
                isSuccess = task.Result.IsSuccessStatusCode;
                task
                .Result
                .Content
                .ReadAsAsync<T>()
                .ContinueWith(t => result = t.Result)
                .Wait();
            })
            .Wait();
       return result;
     }

其结果是在一个JSON格式生成，但我想为JSONP。

The result is produced in a JSON format but I want it for JSONP.

我已阅读， ReadAsSync 只能处理内置mediaformatters。那么，有没有一种方法，我可以改变它来处理JSONP？

I have read that ReadAsSync only handles built in mediaformatters. So is there a way I can change it to handle JsonP?

推荐答案

这个盗窃重复 ....

要完成你想要什么，你需要三样东西：

To accomplish what you want you need three things :

1. 要添加媒体格式，输出JSONP


2. 注册媒体格式（传统上通过global.asx完成）


3. 确保客户端请求JSONP。

1. to add a media formatter that outputs JSONP
2. register the media formatter (traditionally done through global.asx)
3. ensure the client requests jsonP.

您可以偷这个JSONP媒体格式。

You can steal this JSONP media formatter.

然后，您需要注册媒体格式。你可以用下面的code编程片段做到这一点：

Then, you need to register the media formatter. You can do this programatically with the following code snippet:

var config = GlobalConfiguration.Configuration;
config.Formatters.Insert(0, new JsonpMediaTypeFormatter());

既然你显然不使用Global.asax中你将需要确保格式化某种方式登记。你不提供关于如何做到这一点足够的信息，但我怀疑一个明智放在IF语句和一个静态变量，表示注册将得到你。

Since you apparently don't use global.asax you're going to need to make sure the formatter is registered somehow. YOU don't provide enough information on how to do it, but i suspect a judiciously placed IF statement and a static variable indicating registration would get you there.

我还是不太知道你使用的是什么类型的客户端，但如果它的jQuery像下面将让你有：

I still don't quite know what type of client you're using, but if it's jquery something like the following will get you there:

$.ajax({
    url: 'http://myurl.com',
    type: 'GET',
    dataType: 'jsonp',
    success: function (data) {
        alert(data.MyProperty);
    }
})

重要的部分是发送接受头相匹配的接受你的头闪亮的新JSONP格式正在监听。在我看来，前两个选择要么是：应用程序/ JavaScript的或文/ JavaScript的

The important part is the accept header sent matches the accept header your shiny new jsonp formatter is listening for. The top two choices in my opinion are either: application/javascript or text/javascript.

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