NetCore的全域性日誌記錄

ProZkb發表於2024-07-02
NetCore

Http進來的資料和出去的資料都記錄在log中

public class HttpLoggingMiddleware
{
    private readonly RequestDelegate _next;
    private readonly ILogger<HttpLoggingMiddleware> _logger;

    public HttpLoggingMiddleware(RequestDelegate next, ILogger<HttpLoggingMiddleware> logger)
    {
        _next = next;
        _logger = logger;
    }

    public async Task InvokeAsync(HttpContext context)
    {
        // 記錄請求資訊
        var request = context.Request;
        var requestLog = new StringBuilder();
        requestLog.AppendLine("HTTP Request Information:");
        requestLog.AppendLine($"Method: {request.Method}");
        requestLog.AppendLine($"Path: {request.Path}");
        requestLog.AppendLine("Headers:");
        foreach (var header in request.Headers)
        {
            requestLog.AppendLine($"{header.Key}: {header.Value}");
        }
        requestLog.AppendLine("Query Parameters:");
        foreach (var param in request.Query)
        {
            requestLog.AppendLine($"{param.Key}: {param.Value}");
        }

        if (request.ContentLength > 0)
        {
            request.EnableBuffering();
            using (var reader = new StreamReader(request.Body, Encoding.UTF8, true, 1024, true))
            {
                var body = await reader.ReadToEndAsync();
                requestLog.AppendLine($"Body: {body}");
                request.Body.Position = 0;
            }
        }

        _logger.LogInformation(requestLog.ToString());

        // 記錄響應資訊
        var originalBodyStream = context.Response.Body;
        using (var responseBody = new MemoryStream())
        {
            context.Response.Body = responseBody;

            await _next(context);

            context.Response.Body.Seek(0, SeekOrigin.Begin);
            var responseText = await new StreamReader(context.Response.Body).ReadToEndAsync();
            context.Response.Body.Seek(0, SeekOrigin.Begin);

            if (context.Response.ContentType != null && context.Response.ContentType.Contains("application/json"))
            {
                var responseLog = new StringBuilder();
                responseLog.AppendLine("HTTP Response Information:");
                responseLog.AppendLine($"Status Code: {context.Response.StatusCode}");
                responseLog.AppendLine("Headers:");
                foreach (var header in context.Response.Headers)
                {
                    responseLog.AppendLine($"{header.Key}: {header.Value}");
                }
                responseLog.AppendLine($"Body: {responseText}");

                _logger.LogInformation(responseLog.ToString());
            }

            await responseBody.CopyToAsync(originalBodyStream);
        }
    }
}

app.UseMiddleware<HttpLoggingMiddleware>();

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