If you re logging for JSON result/ view result , you don t need to read the whole response stream. Simply serialize the context.Result:

public class MyFilterAttribute : ActionFilterAttribute
{
    private ILogger<MyFilterAttribute> logger;

    public MyFilterAttribute(ILogger<MyFilterAttribute> logger){
        this.logger = logger;
    }
    public override void OnActionExecuted(ActionExecutedContext context)
    {
        var result = context.Result;
        if (result is JsonResult json)
        {
            var x = json.Value;
            var status = json.StatusCode;
            this.logger.LogInformation(JsonConvert.SerializeObject(x));
        }
        if(result is ViewResult view){
            // I think it s better to log ViewData instead of the finally rendered template string
            var status = view.StatusCode;
            var x = view.ViewData;
            var name = view.ViewName;
            this.logger.LogInformation(JsonConvert.SerializeObject(x));
        }
        else{
            this.logger.LogInformation("...");
        }
    }

我知道已经有了答案,但我还要补充,问题是MVC输油管没有填满<代码>。 页: 1 The Response.Body is populationed by the MVC middleware/code>.

正如其他答复中所讨论的,如果你希望以<条码>采取行动,则你可以使用<条码>。 查阅信息的结果。

For logging whole request and response in the ASP.NET Core filter pipeline you can use Result filter attribute

    public class LogRequestResponseAttribute : TypeFilterAttribute
    {
        public LogRequestResponseAttribute() : base(typeof(LogRequestResponseImplementation)) { }

        private class LogRequestResponseImplementation : IAsyncResultFilter
        {
            public async Task OnResultExecutionAsync(ResultExecutingContext context, ResultExecutionDelegate next)
            {
                var requestHeadersText = CommonLoggingTools.SerializeHeaders(context.HttpContext.Request.Headers);
                Log.Information("requestHeaders: " + requestHeadersText);

                var requestBodyText = await CommonLoggingTools.FormatRequestBody(context.HttpContext.Request);
                Log.Information("requestBody: " + requestBodyText);

                await next();

                var responseHeadersText = CommonLoggingTools.SerializeHeaders(context.HttpContext.Response.Headers);
                Log.Information("responseHeaders: " + responseHeadersText);

                var responseBodyText = await CommonLoggingTools.FormatResponseBody(context.HttpContext.Response);
                Log.Information("responseBody: " + responseBodyText);
            }
        }
    }

增 编

    app.UseMiddleware<ResponseRewindMiddleware>();

    services.AddScoped<LogRequestResponseAttribute>();

部分增加静态等级

    public static class CommonLoggingTools
    {
        public static async Task<string> FormatRequestBody(HttpRequest request)
        {
            //This line allows us to set the reader for the request back at the beginning of its stream.
            request.EnableRewind();

            //We now need to read the request stream.  First, we create a new byte[] with the same length as the request stream...
            var buffer = new byte[Convert.ToInt32(request.ContentLength)];

            //...Then we copy the entire request stream into the new buffer.
            await request.Body.ReadAsync(buffer, 0, buffer.Length).ConfigureAwait(false);

            //We convert the byte[] into a string using UTF8 encoding...
            var bodyAsText = Encoding.UTF8.GetString(buffer);

            //..and finally, assign the read body back to the request body, which is allowed because of EnableRewind()
            request.Body.Position = 0;

            return $"{request.Scheme} {request.Host}{request.Path} {request.QueryString} {bodyAsText}";
        }

        public static async Task<string> FormatResponseBody(HttpResponse response)
        {
            //We need to read the response stream from the beginning...
            response.Body.Seek(0, SeekOrigin.Begin);

            //...and copy it into a string
            string text = await new StreamReader(response.Body).ReadToEndAsync();

            //We need to reset the reader for the response so that the client can read it.
            response.Body.Seek(0, SeekOrigin.Begin);

            response.Body.Position = 0;

            //Return the string for the response, including the status code (e.g. 200, 404, 401, etc.)
            return $"{response.StatusCode}: {text}";
        }

        public static string SerializeHeaders(IHeaderDictionary headers)
        {
            var dict = new Dictionary<string, string>();

            foreach (var item in headers.ToList())
            {
                //if (item.Value != null)
                //{
                var header = string.Empty;
                foreach (var value in item.Value)
                {
                    header += value + " ";
                }

                // Trim the trailing space and add item to the dictionary
                header = header.TrimEnd(" ".ToCharArray());
                dict.Add(item.Key, header);
                //}
            }

            return JsonConvert.SerializeObject(dict, Formatting.Indented);
        }
    }

    public class ResponseRewindMiddleware {
        private readonly RequestDelegate next;

        public ResponseRewindMiddleware(RequestDelegate next) {
            this.next = next;
        }

        public async Task Invoke(HttpContext context) {

            Stream originalBody = context.Response.Body;

            try {
                using (var memStream = new MemoryStream()) {
                    context.Response.Body = memStream;

                    await next(context);

                    //memStream.Position = 0;
                    //string responseBody = new StreamReader(memStream).ReadToEnd();

                    memStream.Position = 0;
                    await memStream.CopyToAsync(originalBody);
                }

            } finally {
                context.Response.Body = originalBody;
            }

        } 

也可以做:

string response = "Hello";
if (result is ObjectResult objectResult)
{
    var status = objectResult.StatusCode;
    var value = objectResult.Value;
    var stringResult = objectResult.ToString();
    responce = (JsonConvert.SerializeObject(value));
}

我在“NET”核心数据中使用。