How to get Request JSON Message with in the Exception Handler - WebAPI?

Question

I created webApi global exception handler, i have to log the request parameters/JSON in the prod environment to verify the request if any exception happened, Please let me know the way to log the request message with in the

ExceptionHandler

.

WebApiConfig

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        config.Services.Replace(typeof (IExceptionHandler), 
            new GlobalExceptionHandler());
    }
}

GlobalExceptionHandler

public class GlobalExceptionHandler : ExceptionHandler
{
    public override void Handle(ExceptionHandlerContext context)
    {
     Logger.log("Exception : \t" + context.Exception.Message)
         Logger.log("Request JSON : \t" + Josn.Serializer(context.Request.Content));
    }
}

Not able to get the Request JSON from body of the WebAPI request, here i am not able get that request — Gopinath2105
– Gopinath2105, Commented Feb 21, 2018 at 5:32

PSK · Accepted Answer · 2018-02-21 07:07:32Z

2

You can try reading the content like following.

For POST/PUT/DELETE following code will read the content.

     string jsonContent = "";
     System.Web.HttpContext.Current.Request.InputStream.Position = 0;
     using (var reader = new StreamReader(System.Web.HttpContext.Current.Request.InputStream, System.Text.Encoding.UTF8, true, 4096, true))
         {    
          jsonContent= reader.ReadToEnd().ToString();
         }

 //Reset back the position
     System.Web.HttpContext.Current.Request.InputStream.Position = 0;

For GET request you can log the URL directly.

edited Feb 21, 2018 at 7:07

answered Feb 21, 2018 at 5:43

PSK

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8 Comments

Gopinath2105 Over a year ago

not able to access httpContext with in the ExceptionHandler.. Let me know how to access

PSK Over a year ago

I have updated the answer, you should be able to get it like System.Web.HttpContext.Current.Request.InputStream

PSK Over a year ago

Did you got the content?

Gopinath2105 Over a year ago

Thanks i am able to access the HttpContext, but reader.TeadToEnd().ToString() is retruns empty string even though content length is 27. Please let me know what i did wrong

Gopinath2105 Over a year ago

it workd after I moved System.Web.HttpContext.Current.Request.InputStream.Position = 0; beginning of the code.

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