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我有一个LoggingHandler类,我用它作为消息处理程序来记录(使用log4net)请求和响应我的WebApi

public class LoggingMessageHandler : DelegatingHandler
{
    public ILogManager LogManager { get; set; }

    protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, System.Threading.CancellationToken cancellationToken)
    {
        var controllerType = GlobalConfiguration.Configuration.Services
            .GetHttpControllerSelector()
            .SelectController(request)
            .ControllerType;

        var requestInfo = string.Format("{0} {1}", request.Method, request.RequestUri);
        var correlationId = request.GetCorrelationId().ToString();

        var requestMessage = await request.Content.ReadAsStringAsync();

        await LogIncommingMessageAsync(controllerType, correlationId, requestInfo, requestMessage.Replace("\r\n", ""));

        var response = await base.SendAsync(request, cancellationToken);

        string responseMessage;

        if (response.IsSuccessStatusCode)
            responseMessage = await response.Content.ReadAsStringAsync();
        else
            responseMessage = response.ReasonPhrase;

        await OutgoingMessageAsync(controllerType, correlationId, requestInfo, responseMessage);

        return response;
    }

    protected async …