system.text.json

问题 I'm receiving a response from a web api call as a stream and need to deserialize it to a model. This is a generic method, so I can't say which parts of code will use this and what's the response payload. Here's the method: public async Task<T> InvokeAsync<T>(string method) { Stream response = await this.httpClientWrapper.InvokeAsync(method); var serializer = new JsonSerializer(); using var streamReader = new StreamReader(response); using var reader = new JsonTextReader(streamReader); return

问题 I am developing the ASP.NET Core Application using the latest .NET Core 3.1.1 and System.Text.Json which was previously using the Newtonsoft.Json . As recommended in the Microsoft Migration guide I have done the changes. Also, as most of my enums need to be serialized as String I have configured my Startup.cs ConfigureServices to use the JsonStringEnumConverter globally. public void ConfigureServices(IServiceCollection services) { // lines omitted for brevity services.AddControllers()

问题 I am developing the ASP.NET Core Application using the latest .NET Core 3.1.1 and System.Text.Json which was previously using the Newtonsoft.Json . As recommended in the Microsoft Migration guide I have done the changes. Also, as most of my enums need to be serialized as String I have configured my Startup.cs ConfigureServices to use the JsonStringEnumConverter globally. public void ConfigureServices(IServiceCollection services) { // lines omitted for brevity services.AddControllers()

问题 This question already has an answer here : How do I target attributes for a record class? (1 answer) Closed last month . I want to use record with JsonPropertyName attribute, but it caused an error. This is not supported? Any workaround? public record QuoteResponse([JsonPropertyName("quotes")] IReadOnlyCollection<Quote>? Quotes); Error CS0592 Attribute 'JsonPropertyName' is not valid on this declaration type. It is only valid on 'property, indexer, field' declarations. 回答1: By default

问题 I am upgrading an application from .NET Core 2.2 to .NET Core 3.0, and the new System.Text.Json serializer is not behaving the same as Newtonsoft did in 2.2. On characters like a non-breaking-space (\u00A0) or emoji characters, Newtonsoft (and even Utf8Json) serialize them as their actual characters, not the Unicode code. I've created a simple .NET Fiddle to show this. var input = new Foo { Bar = "\u00A0 Test !@#$%^&*() 💯\uD83D\uDCAF 你好" }; var newtonsoft = Newtonsoft.Json.JsonConvert

问题 I am writing a custom System.Text.Json.JsonConverter to upgrade an old data model to a new version. I have overridden Read() and implemented the necessary postprocessing. However, I don't need to do anything custom at all in the Write() method. How can I automatically generate the default serialization that I would get if I did not have a converter at all? Obviously I could just use different JsonSerializerOptions for deserialization and serialization, however my framework doesn't provide

问题 Json.NET behaviour could be defined by attributes: either use default or just throw an exception if json payload does not contain required property. Yet System.Text.Json serializer silently does nothing. Having class: public sealed class Foo { [Required] public int Prop {get;set;} = 10; } and deserializing empty object: JsonSerializer.Deserialize<Foo>("{}"); I simply get an instance of Foo with Prop=10 . I could not find any setting in JsonSerializerOptions to force it throw an exception. Is

问题 { "TestData":{ "Year__of__Account":"2019", "Tax___x0025_":"0.06", "Buildings__1":"1000", "Contents__1":"400", "Total_Insurable_Value":"100", "Buildings__Prem":"2560.8", "Contents__Prem":"1707.2", "YB__1":"1950", "No__Buildings":"55", "Location_Sprinklers_YN":"No", "test":"test" } } In the above sample JSON I want to add a property called "Name" with Value "John" inside property "TestData". How can I achieve this using .net Core 3.0 System.Text.Json library. I have tried using methods of

问题 I have an ASP.NET Core Web API project using .Net Framework 4.7 and I'm upgrading to .Net Core 3.1. One of the reasons that I'm upgrading is to use the new System.Text.Json serializer. Currently, I have some versions of the API based on the route, like: /api/v1/controller /api/v2/controller And I will create a new one (v3) to use the new serializer. But here is the problem: I want to keep using JSON.Net on the older routes, to avoid any possible formating problem with the integrated clients.

问题 I have an ASP.NET Core Web API project using .Net Framework 4.7 and I'm upgrading to .Net Core 3.1. One of the reasons that I'm upgrading is to use the new System.Text.Json serializer. Currently, I have some versions of the API based on the route, like: /api/v1/controller /api/v2/controller And I will create a new one (v3) to use the new serializer. But here is the problem: I want to keep using JSON.Net on the older routes, to avoid any possible formating problem with the integrated clients.