Xamarin Android - 使用复杂参数(对象)发出Rest请求抛出异常,在.NET中它工作正常(使用通道工厂)

Question

我开始使用mono droid或Xamarin for Android,所以,我的想法是重用我已经在.NET中使用的大部分代码.

我需要我的android和ios应用程序做的事情之一就是使用带有json编码的wcf rest调用Web服务.

所以我的代码很简单:

WebHttpBinding webBinding = new WebHttpBinding();
EndpointAddress endPointAddress = new EndpointAddress("http://192.168.126.24:8025/Services/SecurityManagement");
ChannelFactory<ISecurityManagement> newFactory = new ChannelFactory<ISecurityManagement>(webBinding, endPointAddress);

newFactory.Endpoint.Behaviors.Add(new WebHttpBehavior() { DefaultOutgoingRequestFormat = System.ServiceModel.Web.WebMessageFormat.Json, DefaultOutgoingResponseFormat = System.ServiceModel.Web.WebMessageFormat.Json });

newFactory.Endpoint.Behaviors.Add(new RestEndPointBehavior());

ISecurityManagement newProxy = newFactory.CreateChannel();
ValidateUserExistenceOutput output = newProxy.ValidateUserExistence(new ValidateUserExistenceInput() { Domain = "CRITICAL", Username = "myUserName" });

很简单,让我开始(至少,这是我的单声道的想法,使单声道的.net重用)

但是,当我运行此代码时,我得到以下异常异常:

System.NotSupportedException: Loading...
07-25 10:43:40.922 E/mono    ( 1950): 
07-25 10:43:40.922 E/mono    ( 1950): Unhandled Exception:
07-25 10:43:40.922 E/mono    ( 1950): System.NotSupportedException: Conversion from the argument parameterType 'BusinessOrchestration.SecurityManagement.InputObjects.ValidateUserExistenceInput' is not supported
07-25 10:43:40.922 E/mono    ( 1950):   at System.ServiceModel.Dispatcher.QueryStringConverter.ConvertValueToString (System.Object parameter, System.Type parameterType) [0x00000] in <filename unknown>:0 
07-25 10:43:40.922 E/mono-rt ( 1950):   at System.ServiceModel.Dispatcher.WebMessageFormatter+WebClientMessageFormatter.SerializeRequest (System.ServiceModel.Channels.MessageVersion messageVersion, System.Object[] parameters) [0x00000] in <filename unkno07-25 10:43:40.922 E/mono    ( 1950):   at System.ServiceModel.Dispatcher.WebMessageFormatter+WebClientMessageFormatter.SerializeRequest (System.ServiceModel.Channels.MessageVersion messageVersion, System.Object[] parameters) [0x00000] in <filename unknown>:0 
07-25 10:43:40.922 E/mono    ( 1950):   at System.ServiceModel.Description.WebHttpBehavior+ClientPairFormatter.SerializeRequest (System.ServiceModel.Channels.MessageVersion messageVersion, System.Object[] parameters) [0x00000] in <filename unknown>:0 
07-25 10:43:40.922 E/mono    ( 1950):   at System.ServiceModel.MonoInternal.ClientRuntimeChannel.CreateRequest (System.ServiceModel.Dispatcher.ClientOperation op, System.Object[] parameters) [0x00000] in <filename unknown>:0 
07-25 10:43:40.922 E/mono    ( 1950):   at System.ServiceModel.MonoIn
07-25 10:43:40.922 E/mono-rt ( 1950): [ERROR] FATAL UNHANDLED EXCEPTION: System.NotSupportedException: Conversion from the argument parameterType 'BusinessOrchestration.SecurityManagement.InputObjects.ValidateUserExistenceInput' is not supported
07-25 10:43:40.922 E/mono-rt ( 1950):   at System.ServiceModel.Dispatcher.QueryStringConverter.ConvertValueToString (System.Object parameter, System.Type parameterType) [0x00000] in <filename unknown>:0 
07-25 10:43:40.922 E/mono-rt ( 1950):   at System.ServiceModel.Dispatcher.WebMessageFormatter+WebClientMessageFormatter.SerializeRequest (System.ServiceModel.Channels.MessageVersion messageVersion, System.Object[] parameters) [0x00000] in <filename unknown>:0 
07-25 10:43:40.922 E/mono-rt ( 1950):   at System.ServiceModel.Description.WebHttpBehavior+ClientPairFormatter.SerializeRequest (System.ServiceModel.Channels.MessageVersion messageVersion, System.Object[] parameters) [0x00000] in <filename unknown>:0 
07-25 10:43:40.922 E/mono-rt ( 1950):   at System.ServiceModel.MonoInternal.ClientRuntimeChannel.CreateRequest (System.ServiceModel.Dispatcher.ClientOperation op, System.Object[] parameters) [0x00000] in <filename unknown>:0 
07-25 10:43:40.922 E/mono-rt ( 1950):   at System.Servic
The program 'Mono' has exited with code 0 (0x0).

我在.NET 4.5应用程序中使用完全相同的代码并且它工作正常,它似乎在将对象转换为字符串时失败(我认为是json字符串).

它应该直接在单声道中工作,因为它在.NET中工作吗？

你们有复杂输入对象的服务吗？你用什么API来打电话？

在此先感谢您的帮助,

路易斯平霍

Answer 1

它不起作用，因为代码中使用的某些对象尚未移植到 Mono，因为它们是 Microsoft 特定的。这里有一些信息： Mono Class Status

例如，代码中Microsoft.EnterpriseManagement使用的这个命名空间ISecurityManagement可能永远不会被移植。

要在 Mono 或 .Net 上工作，您的代码必须遵循.NET 标准。这是一项正在进行的工作，旨在协调 Mono、.Net 和 .Net Core 框架，以便它们能够以更少的代码差异编译通用库和程序。