asp.net-core-webapi

问题 I can't figure out how I can work with inherited classes in an web API controller. I have to create only one API controller to create and update inherited objects in the database. Similar to my models (to all these models exists a Dto): public class Animal { public virtual string Name {get; set;} // e.g. Harry public virtual string Type {get; set;} // e.g. Dog } public class AnimalDto { public string Name; public Type Type; } public class Dog : Animal { public virtual bool CanBark {get; set;}

问题 In my ASP.NET Core application I bind the appsettings.json to a strongly typed class AppSettings . public Startup(IHostingEnvironment environment) { var builder = new ConfigurationBuilder() .SetBasePath(environment.ContentRootPath) .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true) .AddJsonFile($"appsettings.{environment.EnvironmentName}.json", optional: true, reloadOnChange: true) .AddEnvironmentVariables(); Configuration = builder.Build(); } public void ConfigureServices

问题 I have recently upgraded my web api from .Net core 2.2 to .Net core 3.0 and noticed that my requests are getting an error now when I pass an enum in a post to my endpoint. For example: I have the following model for my api endpoint: public class SendFeedbackRequest { public FeedbackType Type { get; set; } public string Message { get; set; } } Where the FeedbackType looks like so: public enum FeedbackType { Comment, Question } And this is the controller method: [HttpPost] public async Task

问题 I am using Angular JS with TypeScript and ASP.NET Core MVC/API. I have an apiService which deals with all POST and GET requests to the server, which looks like this: module TBApp { export class apiService { static $inject = ['$http', 'notificationService']; constructor(private $http, private notificationService: notificationService) { } get(url, config, success, failure) { return this.$http.get(url, config) .then(result => { this.handleResponse(result, success); }, result => { this

问题 I have a .Net Core Web API that is returning a 415 Unsupported Media Error when I try to post some data to it that includes some json. Here's part of what is returned in the Chrome Debugger: Request URL:http://localhost:51608/api/trackAllInOne/set Request Method:POST Status Code:415 Unsupported Media Type Accept:text/javascript, text/html, application/xml, text/xml, */* Content-Type:application/x-www-form-urlencoded action:finish currentSco:CSharp-SSLA:__How_It_Works_SCO data:{"status":

问题 I am trying to use [FromQuery] in my web api and I am not sure how to use it. Here's the GetAllBooks() method in the controller: [HttpGet] [Route("api/v1/ShelfID/{shelfID}/BookCollection")] public async Task<IActionResult> GetAllBooks(string shelfID, [FromQuery] Book bookinfo) { //do something } Here's the Book model class: public class Book { public string ID{ get; set; } public string Name{ get; set; } public string Author { get; set; } public string PublishDate { get; set; } } I am

问题 I've tried to find a solution for this, but all the ones coming up are for previous versions of ASP.Net. I'm working with the JWT authentication middleware and have the following method: private async Task GenerateToken(HttpContext context) { var username = context.Request.Form["username"]; var password = context.Request.Form["password"]; //Remainder of login code } This gets the sent data as if it was form data, but my Angular 2 front end is sending the data as JSON. login(username: string,

问题 The Azure error is: .Net Core: Application startup exception: System.IO.FileNotFoundException: The configuration file 'appsettings.json' was not found and is not optional. So this is a bit vague. I can't seem to nail this down. I'm trying to deploy a .Net Core Web API project to Azure, and I'm getting this error: :( Oops. 500 Internal Server Error An error occurred while starting the application. I've deployed plain old .Net WebAPI's and they have worked. I've followed online tutorials and

问题 I am trying to use (POST/PUT) a DTO object with a collection of child objects from JavaScript to an ASP.NET Core (Web API) with an EF Core context as my data source. The main DTO class is something like this ( simplified of course ): public class CustomerDto { public int Id { get;set } ... public IList<PersonDto> SomePersons { get; set; } ... } What I don't really know is how to map this to the Customer entity class in a way that does not include a lot of code just for finding out which

问题 I am trying to read the body in a middleware for authentication purposes, but when the request gets to the api controller the object is empty as the body has already been read. Is there anyway around this. I am reading the body like this in my middleware. var buffer = new byte[ Convert.ToInt32( context.Request.ContentLength ) ]; await context.Request.Body.ReadAsync( buffer, 0, buffer.Length ); var body = Encoding.UTF8.GetString( buffer ); 回答1: If you're using application/x-www-form-urlencoded