Merge branch 'fixed/jsonbug' into v2020calculate

performance/Performance.Api/Startup.cs

@@ -81,7 +81,7 @@ public void ConfigureServices(IServiceCollection services)
                     json.SerializerSettings.NullValueHandling = Newtonsoft.Json.NullValueHandling.Include;
                     json.SerializerSettings.DateFormatHandling = Newtonsoft.Json.DateFormatHandling.MicrosoftDateFormat;
                     json.SerializerSettings.DateTimeZoneHandling = Newtonsoft.Json.DateTimeZoneHandling.Utc;
-                    json.SerializerSettings.Culture = new CultureInfo("it-IT");
+                    json.SerializerSettings.Culture = new CultureInfo("zh-CN");
                     json.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore;
                 })
                 //model验证