从泛型帮助器返回HttpResponseMessage
从泛型帮助器返回HttpResponseMessage
提问于 2018-06-06 05:45:03
在没有异常的情况下，如何让Helper类中的以下方法在下面的代码块中返回HttpResponseMessage：
public class HttpClientHelper
{
public static T PutAsync<T>(string resourceUri, object request)
{
using (var client = new HttpClient())
{
client.BaseAddress = new Uri(resourceUri);
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
try
{
var responseMessage = client.PutAsJsonAsync(resourceUri, request).Result;
return new HttpResponseMessage // It says cannot implicitly convert to Type T
{
StatusCode = responseMessage.StatusCode,
Content= responseMessage.Content.ReadAsStringAsync().Result.ToString()
};
}
catch (Exception ex)
{
throw new HttpResponseException(ex.Message.ToString());
}
}
}
}HttpResponse异常：
public class HttpResponseException : Exception
{
private string _message;
public HttpResponseException() : base() { }
public HttpResponseException(string message) : base(message)
{
this._message = message;
}
public override string Message
{
get
{
return this._message;
}
}
}我正在尝试实现一个通用的助手类来调用我的ASP.NET Web。
回答 1
Stack Overflow用户
回答已采纳
发布于 2018-06-06 06:18:58
返回Web Api返回的反序列化对象，而不是返回HttpResponseMessage：
public static T PutAsync<T>(string resourceUri, object request)
{
using (var client = new HttpClient())
{
client.BaseAddress = new Uri(resourceUri);
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
try
{
var responseMessage = client.PutAsJsonAsync(resourceUri, request).Result;
responseMessage.EnsureSuccessStatusCode();
var responseData = responseMessage.Content.ReadAsStringAsync().Result;
return JsonConvert.DeserializeObject<T>(responseData);
}
catch (Exception ex)
{
throw new HttpResponseException(ex.Message);
}
}
}此外，PutAsync让我认为我使用的是async Task方法。可以将其称为Put，也可以将其设为异步。
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原文链接：
https://stackoverflow.com/questions/50709395
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