Deserialize HttpContext context response in asp.net core middleware - asp.net

Question

I want to Deserialize HttpContext context response in my exception middleware
like
context.Response.Deserialize<myclasss>();
if it deserilizes successfully according to myclass i want to send a specific respponse object back like
StatusCode = (int)HttpStatusCode.InternalServerError,
Message = "something went wrong"

Answer 1

There is a better way of resolving the same. Define a model for your error messages. Let that be ApiError
public class ErrorDetailsVM
{
public string Message { get; set; }
public string Exception { get; set; }
public string StackTrace { get; set; }
public string Source { get; set; }
public override string ToString()
{
return JsonConvert.SerializeObject(this);
}
}
Then you can create your own Middleware that will always send back the ErrorDetailsVM object after serializing it. Following is an example of the middleware.
public class DeveloperExceptionMiddleware
{
private readonly ILoggerFactory _loggerFactory;
private readonly RequestDelegate _next;
public DeveloperExceptionMiddleware(RequestDelegate next, ILoggerFactory loggerFactory)
{
_loggerFactory = loggerFactory;
_next = next;
}
public async Task InvokeAsync(HttpContext httpContext) //If you have additional dependencies, you can inject them here.
{
try
{
await _next(httpContext);
}
catch (Exception ex)
{
//Log your errors here. Then send back the client a response.
await HandleExceptionAsync(httpContext, ex);
}
}
private static Task HandleExceptionAsync(HttpContext context, Exception exception)
{
context.Response.ContentType = "application/json";
context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;
return context.Response.WriteAsync(new ErrorDetailsVM()
{
Message = exception.Message,
Exception=exception.ToString(),
StackTrace=exception.StackTrace,
Source = exception.Source
}.ToString());
}
}
And finally, inside your Startup.cs you can add the following lines to the Configure method.
if (env.IsDevelopment())
app.UseCustomDeveloperException();
Similarly, you can have a separate UseCustomProductionException middleware for production that sends out less internal information. Let me know if this solves your issue.
Happy Coding <3

Answer 2

in this case i use
context.Response.ReadAsString().Deserilize<MyClass>()
using NewtonSoft.Josn library to deserilize