如何从 HttpRequestMessage 中获取方法名称？

Posted 2023-03-31

【中文标题】如何从 HttpRequestMessage 中获取方法名称？

【英文标题】：How to get method name from HttpRequestMessage?

【发布时间】：2021-11-26 08:21:04

【问题描述】：

我有如下处理程序，我想从Controller 获取方法名称。使用var methodName = request.Method; 只返回“GET”或“POST”之类的方法类型。如何获取方法名称，例如。从 'http://localhost:4200/weatherforecast/getitem/2 我想返回“getitem”。

public class RequestAndResponseHandler : DelegatingHandler

    protected override async Task<HttpResponseMessage> SendAsync(
    HttpRequestMessage request, CancellationToken cancellationToken)
    
        if (request.Content != null)
        
            string requestBody = await request.Content.ReadAsStringAsync();
            Trace.WriteLine(requestBody);
        
        var response = await base.SendAsync(request, cancellationToken);

        if (response.Content != null)
        
            var responseBody = await response.Content.ReadAsStringAsync();
            Trace.WriteLine(responseBody);
        

        var methodName = request.Method;

        return response;
    

【问题讨论】：

这能回答你的问题吗？ How can I get the route name in controller in ASP.NET MVC?

【参考方案1】：

HttpRequestMessage.RequestUri 返回 System.Uri 对象。 你可以使用

var Segments = filterContext.Request.RequestUri.Segments;

获取您请求的不同部分。要消除查询部分，您可以使用 HttpRequestMessage.RequestUri.Query

您需要查看与您相关的细分。在您的具体情况下，它将发送您想要的最后一段。

【参考方案2】：

使用request.RequestUri.ToString()可以获取方法名。

以下代码将帮助您详细的请求和响应拦截。

public class CustomLogHandler : DelegatingHandler


protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)

    var logMetadata = await BuildRequestMetadata(request);
    var response = await base.SendAsync(request, cancellationToken);
    logMetadata = await BuildResponseMetadata(logMetadata, response);
    await SendToLog(logMetadata);
    return response;

private async Task<LogMetadata> BuildRequestMetadata(HttpRequestMessage request)

    LogMetadata log = new LogMetadata
    
        RequestMethod = request.Method.Method,
        RequestTimestamp = DateTime.Now,
        RequestUri = request.RequestUri.ToString(),
        RequestContent = await request.Content.ReadAsStringAsync(),
    ;
    return log;

private async Task<LogMetadata> BuildResponseMetadata(LogMetadata logMetadata, HttpResponseMessage response)

    logMetadata.ResponseStatusCode = response.StatusCode;
    logMetadata.ResponseTimestamp = DateTime.Now;
    logMetadata.ResponseContentType = response.Content == null ? string.Empty : response.Content.Headers.ContentType.MediaType;
    logMetadata.Response = await response.Content.ReadAsStringAsync();
    return logMetadata;

private async Task<bool> SendToLog(LogMetadata logMetadata)

    try
    
     //write this code
    
    catch
    
        return false;
    
    return true;