序列化无符号整数 (ulong) 数组时 Json.NET 崩溃

问题描述

尝试序列化 ulong 数组时出现解析器错误，看起来 Json.NET 库没有检查整数是有符号还是无符号；有人知道解决方法吗?或任何其他可以处理 unsigned int 的 .NET Json 库?

Getting a parser error when trying to serialize a ulong array, looks like the Json.NET library isnt checking if the integer is signed or unsigned; any one know of a workaround for this? or any other .NET Json library that can handle unsigned int's?

*代码如下；*它可以很好地序列化，但是在反序列化时会引发错误；从查看堆栈跟踪来看，它似乎不适合 unsigned int；

* code below; * It serializes fine, but when its deserializing it throws an error; Looks like it doesnt cater for the unsigned int from looking at the stack trace;

NewTonsoft.Json.JsonReaderException : {"JSON integer 18446744073709551615 is too large or small for an Int64."}

Value was either too large or too small for an Int64.
   at System.Number.ParseInt64(String value, NumberStyles options, NumberFormatInfo numfmt)
   at System.Convert.ToInt64(String value, IFormatProvider provider)
   at Newtonsoft.Json.JsonTextReader.ParseNumber() in d:DevelopmentReleasesJsonWorkingSrcNewtonsoft.JsonJsonTextReader.cs:line 1360

   class Program
        {
            static void Main(string[] args)
            {
                string output = JsonConvert.SerializeObject(new ulong[] {ulong.MinValue, 20, 21, 22, ulong.MaxValue});
                Console.WriteLine(output);

                ulong[] array = JsonConvert.DeserializeObject<ulong[]>(output);
                Console.WriteLine(array);

                Console.ReadLine();
            }
        }

推荐答案

没错，在这种情况下，JSON.Net 不会处理大于 long.MaxValue 的值.

You're right, JSON.Net doesn't handle values larger than long.MaxValue in this case.

除了修改库的源代码外，我没有找到任何修改该行为的方法.作为一种解决方法，您可以将其反序列化为 decimal[]，然后将其转换为 ulong[].

I didn't find any way to modify that behavior, except by modifying the source code of the library. As a workaround, you could deserialize it as decimal[] and then convert that into ulong[].

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