的Json DeserializeObject只有iOS的

Question

拋出異常，我沒有搭載Android有這樣的問題，但是當我運行在iOS中相同的工作代碼，然後我得到異常

public async Task Login(string inlogData, string password, string gcm) 
    { 
     Login login = new Dharma.Login(); 
     login.inlog_data = inlogData; 
     login.password = password; 
     login.phone_token = gcm; 

     HttpClient client = new HttpClient(); 
     HttpResponseMessage response = null; 

     string json = JsonConvert.SerializeObject(login, Formatting.Indented); 
     client.Timeout = TimeSpan.FromMilliseconds (10000); 
     client.BaseAddress = new Uri (ConstantVariabels.GetLoginUrl()); 
     client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); 

     var content = new StringContent (json, Encoding.UTF8, "application/json"); 

     try 
     { 
      response = await client.PostAsync (client.BaseAddress, content); 
      response.EnsureSuccessStatusCode(); 
      var JsonResult = response.Content.ReadAsStringAsync().Result; 

      dynamic dynJson = JsonConvert.DeserializeObject(JsonResult); 
      string token = dynJson ["api_token"]; //THIS LINE THROWS THE EXCEPTION 
      LoginPageViewModel.LoginSucceeded(token, true); 
     } 
     catch(TaskCanceledException te) 
     { 
      LoginPageViewModel.LoginSucceeded(te.Message.ToString(), false); 
     } 
     catch(HttpRequestException hre) 
     { 
      LoginPageViewModel.LoginSucceeded(hre.Message.ToString(), false); 
     } 
     catch(Exception e) 
     { 
      LoginPageViewModel.LoginSucceeded("fail", false); 
     } 
    } 

異常

消息：譯員REF類型

堆棧跟蹤：

at Microsoft.Scripting.Interpreter.LightCompiler.CompileMethodCallExpression (System.Linq.Expressions.Expression expr) [0x00089] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1283 
    at Microsoft.Scripting.Interpreter.LightCompiler.CompileNoLabelPush (System.Linq.Expressions.Expression expr) [0x001ba] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1642 
    at Microsoft.Scripting.Interpreter.LightCompiler.Compile (System.Linq.Expressions.Expression expr) [0x00008] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1729 
    at Microsoft.Scripting.Interpreter.LightCompiler.CompileConditionalExpression (System.Linq.Expressions.Expression expr, Boolean asVoid) [0x00007] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:818 
    at Microsoft.Scripting.Interpreter.LightCompiler.CompileNoLabelPush (System.Linq.Expressions.Expression expr) [0x001d2] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1644 
    at Microsoft.Scripting.Interpreter.LightCompiler.Compile (System.Linq.Expressions.Expression expr) [0x00008] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1729 
    at Microsoft.Scripting.Interpreter.LightCompiler.Compile (System.Linq.Expressions.Expression expr, Boolean asVoid) [0x00012] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1593 
    at Microsoft.Scripting.Interpreter.LightCompiler.CompileBlockExpression (System.Linq.Expressions.Expression expr, Boolean asVoid) [0x00028] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:379 
    at Microsoft.Scripting.Interpreter.LightCompiler.CompileNoLabelPush (System.Linq.Expressions.Expression expr) [0x003d0] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1683 
    at Microsoft.Scripting.Interpreter.LightCompiler.Compile (System.Linq.Expressions.Expression expr) [0x00008] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1729 
    at Microsoft.Scripting.Interpreter.LightCompiler.CompileGotoExpression (System.Linq.Expressions.Expression expr) [0x0001f] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:955 
    at Microsoft.Scripting.Interpreter.LightCompiler.CompileNoLabelPush (System.Linq.Expressions.Expression expr) [0x0042d] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1689 
    at Microsoft.Scripting.Interpreter.LightCompiler.CompileAsVoid (System.Linq.Expressions.Expression expr) [0x00085] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1620 
    at Microsoft.Scripting.Interpreter.LightCompiler.Compile (System.Linq.Expressions.Expression expr, Boolean asVoid) [0x00006] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1591 
    at Microsoft.Scripting.Interpreter.LightCompiler.CompileConditionalExpression (System.Linq.Expressions.Expression expr, Boolean asVoid) [0x00071] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:828 
    at Microsoft.Scripting.Interpreter.LightCompiler.CompileNoLabelPush (System.Linq.Expressions.Expression expr) [0x001d2] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1644 
    at Microsoft.Scripting.Interpreter.LightCompiler.CompileAsVoid (System.Linq.Expressions.Expression expr) [0x00085] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1620 
    at Microsoft.Scripting.Interpreter.LightCompiler.CompileBlockStart (System.Linq.Expressions.BlockExpression node) [0x000b0] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:405 
    at Microsoft.Scripting.Interpreter.LightCompiler.CompileBlockExpression (System.Linq.Expressions.Expression expr, Boolean asVoid) [0x00007] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:376 
    at Microsoft.Scripting.Interpreter.LightCompiler.CompileNoLabelPush (System.Linq.Expressions.Expression expr) [0x003d0] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1683 
    at Microsoft.Scripting.Interpreter.LightCompiler.Compile (System.Linq.Expressions.Expression expr) [0x00008] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1729 
    at Microsoft.Scripting.Interpreter.LightCompiler.CompileTop (System.Linq.Expressions.LambdaExpression node) [0x00055] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:221 
    at Microsoft.Scripting.Generation.CompilerHelpers.LightCompile (System.Linq.Expressions.LambdaExpression lambda) [0x00000] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Generation/CompilerHelpers.cs:619 
    at System.Linq.Expressions.Compiler.LambdaCompiler.Compile (System.Linq.Expressions.LambdaExpression lambda, System.Runtime.CompilerServices.DebugInfoGenerator debugInfoGenerator) [0x00000] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/System.Core/System.Linq.Expressions.Interpret/LambdaCompiler.cs:41 
    at System.Linq.Expressions.Expression`1[TDelegate].Compile() [0x00000] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Scripting.Core/Ast/LambdaExpression.cs:188 
    at System.Runtime.CompilerServices.CallSiteBinder.BindCore[T] (System.Runtime.CompilerServices.CallSite`1 site, System.Object[] args) [0x00059] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Scripting.Core/Actions/CallSiteBinder.cs:148 
    at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet] (System.Runtime.CompilerServices.CallSite site, System.Dynamic.T0 arg0) [0x0010d] in /Users/builder/data/lanes/3234/d8bedd03/source/maccore/_build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/dlr/Runtime/Microsoft.Scripting.Core/Actions/UpdateDelegates.Generated.cs:255 
    at Dharma.HttpRequests+<Login>c__async4.MoveNext() [0x0019e] in /Users/laurenspouders/dharmapp/Dharma/Library/HttpRequests.cs:345 

Answer 1

我有同樣的問題，發現以前Newtonsoft JSON用於引用「值」默認，但現在不，那麼只需添加一個.value的

string token = dynJson ["api_token"].Value; 

Answer 2

問題是dynJson ["api_token"]返回類型Newtonsoft.Json.Linq.JTokenType.String，並將其分配給string。所以隱式轉換不會發生並且會發生異常。添加一個明確的強制轉換它將起作用

string token = (string)dynJson ["api_token"]; 

對於隱式轉換，您也必須在Android中出現一些錯誤。

Answer 3

我解決了我的問題。

public async Task Login(string inlogData, string password, string gcm) 
    { 
     Login login = new Dharma.Login(); 
     login.inlog_data = inlogData; 
     login.password = password; 
     login.phone_token = gcm; 

     HttpClient client = new HttpClient(); 
     HttpResponseMessage response = null; 

     string json = JsonConvert.SerializeObject(login, Formatting.Indented); 
     client.Timeout = TimeSpan.FromMilliseconds (10000); 
     client.BaseAddress = new Uri (ConstantVariabels.GetLoginUrl()); 
     client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); 

     var content = new StringContent (json, Encoding.UTF8, "application/json"); 

     try 
     { 
      response = await client.PostAsync (client.BaseAddress, content); 
      response.EnsureSuccessStatusCode(); 
      var JsonResult = response.Content.ReadAsStringAsync().Result; 

      dynamic dynJson = JsonConvert.DeserializeObject(JsonResult); 

      string token = ""; 

      foreach (var obj in dynJson) 
      { 
       if(obj.Name.Equals("api_token")) 
       { 
        token = obj.Value.ToString(); 
       } 
      } 

      LoginPageViewModel.LoginSucceeded(token, true); 
     } 
     catch(TaskCanceledException te) 
     { 
      LoginPageViewModel.LoginSucceeded(te.Message.ToString(), false); 
     } 
     catch(HttpRequestException hre) 
     { 
      LoginPageViewModel.LoginSucceeded(hre.Message.ToString(), false); 
     } 
     catch(Exception e) 
     { 
      LoginPageViewModel.LoginSucceeded("fail", false); 
     } 
    }