WebApi的输出结果重写 OnActionExecuted

        public override void OnActionExecuted(ActionExecutedContext context)
        {

            if (context.Exception != null && context.ExceptionHandled == false)
            {

                context.ExceptionHandled = true;

                int errcode = 500;
                if (context.Exception is ErrorCodeException)
                {
                    errcode = (int)(context.Exception as ErrorCodeException).ErrorCode;
                }
                else
                {
                    //其他异常，需要记日志
                    try
                    {
                        ILogger logger = Global.ServiceProvider.GetService<ILogger<BaseController>>();
                        logger.LogError(context.Exception, "");
                    }
                    catch
                    {
                    }

                }

                context.Result = new JsonResult(new
                {
                    code = errcode,
                    msg = context.Exception.Message
                });
            }
            else if (context.Exception == null && context.Result != null && context.Result is BadRequestObjectResult)
            {

                var objResult = (BadRequestObjectResult)context.Result;

                if (objResult.Value is ValidationProblemDetails details)
                {
                    context.Result = new JsonResult(new
                    {
                        code = 400,
                        msg = details.Errors.ToJsonString()
                    });
                }
                else
                {
                    context.Result = new JsonResult(new
                    {
                        code = 400,
                        msg = "server error"
                    });
                }
            }
            else if (context.Exception == null && context.Result != null && context.Result is ObjectResult)
            {

                var objResult = (ObjectResult)context.Result;

                context.Result = new JsonResult(new
                {
                    code = 200,
                    data = objResult.Value
                });
            }
            else if (context.Exception == null && context.Result is EmptyResult)
            {
                context.Result = new JsonResult(new
                {
                    code = 200
                });
            }

            base.OnActionExecuted(context);
        }
    }