HttpClient.PostAsJsonAsync内容为空 [英] HttpClient.PostAsJsonAsync content empty
本文介绍了HttpClient.PostAsJsonAsync内容为空的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我的发送方:
static void SendResult(ReportResultModel result)
{
//result contains valid data at this point
string portalRootPath = ConfigurationManager.AppSettings["webHost"];
HttpClient client = new HttpClient();
client.BaseAddress = new Uri(portalRootPath);
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
HttpResponseMessage resp = client.PostAsJsonAsync("Reports/MetricEngineReport/MetricResultUpdate", result).Result;
if (!resp.IsSuccessStatusCode) {
//I've confirmed this isn't happening by putting a breakpoint in here.
}
}
我的接收端在不同的类中,在本地计算机上的不同进程中运行:
public class MetricEngineReportController : Controller
{
...
[HttpPost]
public void MetricResultUpdate(ReportResultModel result)
{
//this does get called, but
//all the guids in result are zero here :(
}
...
}
我的模型有点复杂:
[Serializable]
public class ReportResultModel
{
public ReportID reportID {get;set;}
public List<MetricResultModel> Results { get; set; }
}
[Serializable]
public class MetricResultModel
{
public Guid MetricGuid { get; set; }
public int Value { get; set; }
public MetricResultModel(MetricResultModel other)
{
MetricGuid = other.MetricGuid;
Value = other.Value;
}
public MetricResultModel(Guid MetricGuid, int Value)
{
this.MetricGuid = MetricGuid;
this.Value = Value;
}
}
[Serializable]
public struct ReportID
{
public Guid _topologyGuid;
public Guid _matchGuid;
}
知道为什么数据没有到达吗? 如有任何帮助,我们将不胜感激...
附言。由于某种原因,我似乎无法在Figdler上捕捉到http POST消息,不确定是什么原因。
推荐答案
问题是双重的:
我需要在JSON帖子中指定类型,如下所示:
HttpResponseMessage resp = client.PostAsJsonAsync<MetricResultModel>("Reports/MetricEngineReport/MetricResultUpdate", result.Results[0]).Result;
我的模型的组件没有默认构造函数,这是在接收端进行JSON反序列化所必需的。
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