1、定义DelegatingHandler
public class LoggingHandler : DelegatingHandler {private readonly ILogger<LoggingHandler> _logger;public LoggingHandler(ILogger<LoggingHandler> logger){_logger = logger;}protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken){// 记录请求信息_logger.LogInformation("发送请求: {Method} {Uri}", request.Method, request.RequestUri);if (request.Content != null){var requestBody = await request.Content.ReadAsStringAsync();_logger.LogInformation("请求体: {RequestBody}", requestBody);}// 调用基类方法发送请求var response = await base.SendAsync(request, cancellationToken);// 记录响应信息_logger.LogInformation("接收到响应: {StatusCode}", response.StatusCode);if (response.Content != null){var responseBody = await response.Content.ReadAsStringAsync();_logger.LogInformation("响应体: {ResponseBody}", responseBody);}return response;} }
2、注入LoggingHandler 和配置使用LoggingHandler
var builder = WebApplication.CreateBuilder(args);//xxxxxxx builder.Services.AddTransient<LoggingHandler>(); builder.Services.AddHttpClient().ConfigureHttpClientDefaults(defaults=> defaults.AddHttpMessageHandler<LoggingHandler>());
然后通过注入IHttpClientFactory, 调用CreateClient方法创建HttpClient发起请求即可在日志中查看到请求的body和响应的body了