Question

我正在尝试编写一个包含异步函数的类，以使对特定API的Web请求更加简单。为了举例说明我的目标，我希望能够编写如下所示的代码：

private void btnLogin_Click(object sender, RoutedEventArgs e)
    {
        // Validate Login Details...
        // Save login details to xml file if user asks...
        JsonObject authSuccess = await myClass.authenticate(username, password); // NOTE JSON WILL BE THE RESPONSE FROM SERVER SO JSONOBJECT SEEMS LOGICAL BUT MAY BE EASIER WAY?
        if (authSuccess){
          // Go to next part of app...
        }else{
          // Show error
        }
    }
private void btnDelete_Click(object sender, RoutedEventArgs e)
    {
        JsonObject deleteSuccess= await myClass.deleteSomeData(type, data); // NOTE JSON WILL BE THE RESPONSE FROM SERVER SO JSONOBJECT SEEMS LOGICAL BUT MAY BE EASIER WAY?
        if (deleteSuccess){
          // Go to next part of app...
        }else{
          // Show error
        }
    }

myClass看起来像：

namespace myApp
{
    public class myClass 
    {
        public async Task<Boolean> authenticate(String username, String apikey)
        {
            var resp = await PostAsync("http://url", "{\"auth\":{\"passwordCredentials\":{\"username\":\"demouser\",\"password\":\"mypass\"}}}");

            return true;
        }

public async Task<Boolean> deleteSomeData(String type, String data)
        {
            var resp = await PostAsync("http://url", "{\"delete\":{\"type\":{\"type\":\"type\",\"data\":\"data\"}}}");

            return true;
        }

        private async Task<JsonObject> PostAsync(string uri, string data)
        {
            JsonSerializer js = new JsonSerializer();

            var httpClient = new HttpClient();

            var response = await httpClient.PostAsync(uri, new JsonObject());

            response.EnsureSuccessStatusCode();

            string content = await response.Content.ReadAsStringAsync();
            return await Task.Run(() => JsonObject.Parse(content));
        }
    }
}

我需要知道是否有一种简单的方法可以做到这一点？我需要能够在我的应用程序的任何地方调用该类，使用PUT，GET，POST，DELETE发送JSON数据与服务器通信，并能够发送自定义标头并设置我自己的内容类型。

我将始终需要能够以json或xml的形式读取和解析服务器的响应。

有人帮忙吗？

PS。很多上面的代码可能都是错误的。

Answer 1

我通过使用一组扩展方法实现了这一点;

    public static bool UpdateItem<TItem>(this HttpClient httpClient, TItem item, string uriBase, string actionName) where TItem : class
    {
        var response = await httpClient.PutAsJsonAsync(string.Format(uriBase, actionName), item);

        response.EnsureSuccessStatusCode();
        .
        .
        .

        return success;
    }

简单的Windows 8 C＃Webrequest发布JSON

1 个答案: