Web API 2的自定义异步操作筛选器

public class LoggingFilter : IActionFilter
{
    public async Task<HttpResponseMessage> OnActionExecutingAsync(HttpActionContext actionContext, CancellationToken cancellationToken)
    {
        // 在异步操作执行之前记录请求信息
        var request = actionContext.Request;
        var requestInfo = $"Request: {request.Method} {request.RequestUri}";

        // 将请求信息记录到日志中
        Logger.Log(requestInfo);

        // 继续执行下一个筛选器
        var response = await base.OnActionExecutingAsync(actionContext, cancellationToken);

        return response;
    }

    public async Task OnActionExecutedAsync(HttpActionExecutedContext actionExecutedContext, CancellationToken cancellationToken)
    {
        // 在异步操作执行之后记录响应信息
        var response = actionExecutedContext.Response;
        var responseInfo = $"Response: {response.StatusCode}";

        // 将响应信息记录到日志中
        Logger.Log(responseInfo);

        // 继续执行下一个筛选器
        await base.OnActionExecutedAsync(actionExecutedContext, cancellationToken);
    }
}

[LoggingFilter]
public class MyController : ApiController
{
    // 控制器的其他代码...
}

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        // 全局注册自定义异步操作筛选器
        config.Filters.Add(new LoggingFilter());

        // 配置其他Web API设置...
    }
}