使用的await任务＆LT; T＆GT;异步挂起控制器MVC应用程序 [英] Using await Task<T> async hangs controller in MVC app

问题描述

我有两个MVC的网站。站点1有一个控制器，它具有以下code调用网站2

I have two MVC websites. Site 1 has a controller that calls Site 2 with the following code

 //  If I remove this in the controller of site1, then execution continues....
 var asdf =   SharedTypes.Utilities.GetjsonStream("http://localhost:11541/UIDP/Details/a1?format=json");
 string g =  asdf.Result;


public class Utilities
{
    public static async Task<string> GetjsonStream(string url)
    {
        HttpClient client = new HttpClient();
        HttpResponseMessage response = await client.GetAsync(url);
        string content = await response.Content.ReadAsStringAsync();
        Debug.WriteLine("Content: " + content);
        return content;
    }
}

我能够直接浏览的网址，看到了JSON ..但什么是从我的同行在网站上下载MVC JSON正确的方法是什么？

I'm able to directly browse the URL and see the JSON.. but what is the correct way to download JSON from my peer website in MVC?

推荐答案

您也许应该把控制器方法到异步方法，并使用等待来避免死锁。

You should probably turn the controller method into an async method and use await to avoid deadlocks.

public async Task<ActionResult> MyActionAsync()
{
    var asdf = SharedTypes.Utilities.GetjsonStream(someUrl);
    string g = await asdf;
    // return something
}

微软的ASP.NET教程中包括的异步方法在ASP.NET MVC 4 。

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