/// <summary>
/// 执行响应流指向新对象
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public async Task Invoke(HttpContext context)
{
context.Request.EnableBuffering();
var api = new HttpContextMessage
{
RequestMethod = context.Request.Method,
ResponseStatusCode = context.Response.StatusCode,
RequestQurey = context.Request.QueryString.ToString(),
RequestContextType = context.Request.ContentType,
RequestHost = context.Request.Host.ToString(),
RequestPath = context.Request.Path,
RequestScheme = context.Request.Scheme,
RequestLocalIp = (context.Request.HttpContext.Connection.LocalIpAddress.MapToIPv4().ToString() + ":" + context.Request.HttpContext.Connection.LocalPort),
RequestRemoteIp = (context.Request.HttpContext.Connection.RemoteIpAddress.MapToIPv4().ToString() + ":" + context.Request.HttpContext.Connection.RemotePort)
};
var request = context.Request.Body;
var response = context.Response.Body;
//请求序列号
string serialNumber = "";
try
{
using (var newRequest = new MemoryStream())
{
//替换request流
context.Request.Body = newRequest;
using (var newResponse = new MemoryStream())
{
//替换response流
context.Response.Body = newResponse;
using (var reader = new StreamReader(request))
{
//读取原始请求流的内容
api.RequestBody = await reader.ReadToEndAsync();
if (string.IsNullOrEmpty(api.RequestBody))
{
//await _next.Invoke(context);
}
else
{
JObject jObject = JObject.Parse(api.RequestBody);
if (jObject["SerialNumber"] != null)
{
if (!string.IsNullOrEmpty(jObject["SerialNumber"].ToString()))
{
serialNumber = jObject["SerialNumber"].ToString();
}
}
}
}
using (var writer = new StreamWriter(newRequest))
{
await writer.WriteAsync(api.RequestBody);
await writer.FlushAsync();
newRequest.Position = 0;
context.Request.Body = newRequest;
await _next(context);
}
using (var reader = new StreamReader(newResponse))
{
newResponse.Position = 0;
api.ResponseBody = await reader.ReadToEndAsync();
try
{
JObject resJObect = JObject.Parse(api.ResponseBody);
resJObect["SerialNumber"] = serialNumber;
api.ResponseBody = resJObect.ToJson();
}
catch
{
}
}
context.Response.Clear();
using (var writer = new StreamWriter(response, System.Text.Encoding.UTF8))
{
await writer.WriteAsync(api.ResponseBody);
await writer.FlushAsync();
}
}
}
}
catch (Exception ex)
{
ResponseResult responseResult = new ResponseResult();
responseResult.SerialNumber = serialNumber;
context.Response.Clear();
context.Response.StatusCode = StatusCodes.Status200OK;
responseResult.Code = ResponseResultType.Error;
responseResult.Message = "对不起，系统开小差了！！！";
//记录异常
Log4NetUtil.LogError("全局捕获异常SerialNumber:" + responseResult.SerialNumber, ex);
using (var writer = new StreamWriter(response))
{
await writer.WriteAsync(responseResult.ToJson());
await writer.FlushAsync();
}
}
finally
{
context.Request.Body = request;
context.Response.Body = response;
}
// 响应完成时存入缓存
context.Response.OnCompleted(() =>
{
//记录响应报文
Log4NetUtil.LogDebug(api.ToString());
return(Task.CompletedTask);
});
}