Question

我将Xamarin.IOS项目移植到它的Unified版本，并且我使用ServiceStack.Text包遇到问题。我已经使用NuGet将它添加到项目中。

所以我在Xamarin上创建了一个新的空项目来测试它并且问题保持不变，所以，这是测试项目代码：

using UIKit;
using ServiceStack.Text;
using System;

namespace ServiceStackTester
{
    public class Test {
        public string Field1 { get; set;}
        public string Field2 { get; set;}
    }

    public class Application
    {
        // This is the main entry point of the application.
        static void Main (string[] args)
        {
            Test t = JsonSerializer.DeserializeFromString<Test>("{Field1:\"A\",Field2:\"B\"}");
            Console.WriteLine (t.Field1);

            // if you want to use a different Application Delegate class from "AppDelegate"
            // you can specify it here.
            UIApplication.Main (args, null, "AppDelegate");
        }
    }
}

JsonSerializer.DeserializeFromString导致此错误：

    System.TypeInitializationException: An exception was thrown by the type initializer for ServiceStack.Text.Json.JsonReader`1 
---> System.Exception: An exception was thrown by the type initializer for ServiceStack.Text.Json.JsonReader 
---> System.Exception: An exception was thrown by the type initializer for ServiceStack.Text.Common.JsReader`1 
---> System.Exception: An exception was thrown by the type initializer for ServiceStack.Text.Common.JsWriter 
---> System.Exception: An exception was thrown by the type initializer for ServiceStack.Text.JsConfig 
---> System.Exception: An exception was thrown by the type initializer for ServiceStack.LicenseUtils 
---> System.Exception: Object reference not set to an instance of an object

at ServiceStack.LicenseUtils..cctor () [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at ServiceStack.Text.JsConfig..cctor () [0x00051] in <filename unknown>:0
--- End of inner exception stack trace ---
at ServiceStack.Text.Common.JsWriter..cctor () [0x0005a] in <filename unknown>:0
--- End of inner exception stack trace ---
at ServiceStack.Text.Common.JsReader`1[ServiceStack.Text.Json.JsonTypeSerializer]..cctor () [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at ServiceStack.Text.Json.JsonReader..cctor () [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at ServiceStack.Text.Json.JsonReader`1[ServiceStackTester.Test]..cctor () [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at ServiceStack.Text.JsonSerializer.DeserializeFromString[Test] (System.String value) [0x00012] in <filename unknown>:0
at ServiceStackTester.Application.Main (System.String[] args) [0x00006] in /Users/daniele/Projects/ServiceStackTester/ServiceStackTester/Main.cs:17

这是许可问题还是我错过了什么？谢谢，丹尼尔

Answer 1

我认为你错过了字段名称旁边的双引号。

“{\” 字段1 \ “：\” A \ “\ ”字段2 \“：\ ”B \“}”

会做的伎俩。

使用JsonSerializer.DeserializeFromString的ServiceStack.Text System.TypeInitializationException

1 个答案: