CODEWITHSUNDEEP
c#htmlasp.net-mvcresponsehttpcontext
Sisyphus
Sisyphus

Reputation: 910

Read response body of HttpContext in MVC

I am creating an action filter that should read the response returned by an action, collect some data from it then log it, but I can't find anywhere where I could read the response body. I tried the following code to access a property name OutputStream at the respone in an HttpContext, but I keep getting error saying that Length property and Read method are not supported for this stream.

    public override void OnActionExecuted(ActionExecutedContext filterContext)
    {
          byte[] buffer = new byte[filterContext.HttpContext.Response.OutputStream.Length];                                 
          using (MemoryStream ms = new MemoryStream())  
          { 
               int read; 
               while ((read = filterContext.HttpContext.Response.OutputStream.Read(buffer, 0, buffer.Length)) > 0)  
               { 
                    ms.Write(buffer, 0, read);
               }
               string html = Encoding.UTF8.GetString(ms.ToArray());  
          }
    }

Upvotes: 1

Views: 2621

Answers (1)

Everson Rafael
Everson Rafael

Reputation: 2083

I can not extract from "Stream", so I decided to use "Result Data" to get the data to my Log.

public class LogResultFilter : IActionFilter, IResultFilter
{
    public void OnResultExecuted(ResultExecutedContext filterContext)
    {

        var responseBody = string.Empty;
        if (filterContext.Result is ViewResultBase)
        {
            responseBody = new JavaScriptSerializer().Serialize(((ViewResultBase)filterContext.Result).ViewData);
        }

        if (filterContext.Result is JsonResult)
        {
            responseBody = new JavaScriptSerializer().Serialize(((JsonResult)filterContext.Result));
        }

        // Continue...

Upvotes: 1

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