C# 如何管理PostAsync呼叫时引发的AggregateException?
我在client.PostAsyc调用时收到AggregateException,即使我已设置长超时 这是我的密码C# 如何管理PostAsync呼叫时引发的AggregateException?,c#,timeout,dotnet-httpclient,C#,Timeout,Dotnet Httpclient,我在client.PostAsyc调用时收到AggregateException,即使我已设置长超时 这是我的密码 try { StoresList objlist = new StoresList(); Windows.Storage.ApplicationDataContainer localSettings = Windows.Storage.ApplicationData.Current.LocalSettings; Windows.Storage.Applica
try
{
StoresList objlist = new StoresList();
Windows.Storage.ApplicationDataContainer localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
Windows.Storage.ApplicationDataContainer session = Windows.Storage.ApplicationData.Current.RoamingSettings;
var contents = new FormUrlEncodedContent(new[]
{
new KeyValuePair<string, string>("userapi", session.Values["userapi"].ToString()),
new KeyValuePair<string, string>("keyapi", session.Values["keyapi"].ToString()),
new KeyValuePair<string, string>("notification_flag","1"),
new KeyValuePair<string, string>("token", localSettings.Values["deviceid"].ToString()),
});
using (var client = new HttpClient() { Timeout = TimeSpan.FromMinutes(4) } )
{
var result = client.PostAsync(session.Values["URL"] + "/abcd/", contents).Result;
if (result.IsSuccessStatusCode)
{
string data = result.Content.ReadAsStringAsync().Result;
if (data.Contains("activate") || data.Contains("enable"))
{
//Please activate the Mobile Assistant Extension
return null;
}
if (data != null)
{
List<Stores> objStores = JsonConvert.DeserializeObject<LoginResponse>(data).stores;
foreach (var item in objStores)
{
Stores objs = new Stores();
{
objs.id = item.id;
objs.name = item.name;
objlist.Add(objs);
}
}
}
}
}
return objlist;
}
catch (Exception ex)
{
throw ex;
return null;
}
有人能建议如何处理这个问题吗?有时我会感到异常
var result = await client.PostAsync(session.Values["URL"] + "/abcd/", contents);
...
string data = await result.Content.ReadAsStringAsync();
我已经提到以下链接,但我仍然得到错误。事件我已设置超时
将async添加到方法定义中,并使用wait而不是.Result
使用.Result会阻塞线程,您将失去使用异步方法的所有好处
使用wait不仅可以打开数据,还可以打开异常,这样您将获得实际的异常,而不是AggregateException
var result = await client.PostAsync(session.Values["URL"] + "/abcd/", contents);
...
string data = await result.Content.ReadAsStringAsync();
虽然有点长,但这里有一个关于使用async/await的好视频:
这值得关注。AggregateException是执行异步任务时遇到的所有异常的集合 如果只想在不进行任何处理的情况下检查遇到的异常,可以执行以下操作:
catch (AggregateException ae)
{
// This will just throw the first exception, which might not explain everything/show the entire trace.
throw ae.InnerException
}
或