(精华)2020年7月1日 ASP.NET Core 使用Enablebuffering多次读取body

public void Configure(IApplicationBuilder app, IWebHostEnvironment env, ILoggerFactory loggerFactory) { //允许body重用 app.Use(next => context => { context.Request.EnableBuffering(); return next(context); }) } [HttpPost] public async Task<string> Post() { //StreamReader sr = new StreamReader(Request.Body); //string data = await sr.ReadToEndAsync(); string data = ""; //Request.EnableBuffering();可以实现多次读取Body Request.EnableBuffering(); StreamReader sr = new StreamReader(Request.Body); data = await sr.ReadToEndAsync(); logger.LogInformation("data=" + data); Request.Body.Seek(0, SeekOrigin.Begin); //再次读取 依然可以成功读到 Request.EnableBuffering(); StreamReader sr2 = new StreamReader(Request.Body); string data2 = await sr2.ReadToEndAsync(); logger.LogInformation("data2=" + data2); Request.Body.Seek(0, SeekOrigin.Begin); string header = $"请求头:\r\n"; foreach (var item in Request.Headers) { header += $"{item.Key}:{item.Value}\r\n"; } logger.LogInformation(header); var ip = Request.Headers["X-Forwarded-For"].FirstOrDefault(); if (string.IsNullOrEmpty(ip)) { //ip = Request.HttpContext.Connection.RemoteIpAddress.ToString(); //ip = Request.HttpContext.Connection.LocalIpAddress.MapToIPv4().ToString(); ip = Request.HttpContext.Connection.RemoteIpAddress.MapToIPv4().ToString(); } logger.LogInformation("ip=" + ip); }