C#拦截Http请求

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
using System.Threading.Tasks;

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

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

    public async Task InvokeAsync(HttpContext context)
    {
        _logger.LogInformation($"Request: {context.Request.Method} {context.Request.Path}");

        // 在这里可以进行请求拦截和处理
        // 例如，验证用户权限

        await _next(context);

        // 在这里可以进行响应拦截和处理
        // 例如，记录响应状态码
        _logger.LogInformation($"Response: {context.Response.StatusCode}");
    }
}

public static class RequestInterceptorMiddlewareExtensions
{
    public static IApplicationBuilder UseRequestInterceptorMiddleware(this IApplicationBuilder builder)
    {
        return builder.UseMiddleware<RequestInterceptorMiddleware>();
    }
}

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }

    app.UseRouting();

    app.UseRequestInterceptorMiddleware(); // 使用自定义中间件

    app.UseEndpoints(endpoints =>
    {
        endpoints.MapGet("/", async context =>
        {
            await context.Response.WriteAsync("Hello World!");
        });
    });
}