对于JValue对象的ToJson()方法，会报错

[kimdiego2098]

【日志级别】：Warning 【日志类名】：上传设备:RabbitMQ上传设备 【日志时间】：2023-07-14 09:40:14:9631989 +08 【日志内容】： RabbitMQClient IP:localhost Port:5672 【异常信息】：System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.InvalidOperationException: Cannot access child value on Newtonsoft.Json.Linq.JValue. at Newtonsoft.Json.Linq.JToken.get_First() --- End of inner exception stack trace --- at System.RuntimeMethodHandle.InvokeMethod(Object target, Span`1& arguments, Signature sig, Boolean constructor, Boolean wrapExceptions) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) at System.Reflection.RuntimePropertyInfo.GetValue(Object obj, BindingFlags invokeAttr, Binder binder, Object[] index, CultureInfo culture) at System.Reflection.RuntimePropertyInfo.GetValue(Object obj, Object[] index) at NewLife.Serialization.JsonWriter.WriteObject(Object obj) at NewLife.Serialization.JsonWriter.WriteValue(Object obj) at NewLife.Serialization.JsonWriter.WriteMember(String name, Object value, String comment, Boolean& first) at NewLife.Serialization.JsonWriter.WriteObject(Object obj) at NewLife.Serialization.JsonWriter.WriteValue(Object obj) at NewLife.Serialization.JsonWriter.WriteArray(IEnumerable arr) at NewLife.Serialization.JsonWriter.WriteValue(Object obj) at NewLife.Serialization.JsonWriter.ToJson(Object obj, Boolean indented, Boolean nullValue, Boolean camelCase) at NewLife.Serialization.JsonHelper.ToJson(Object value, Boolean indented)

[nnhy]

Json序列化位于NewLife.Core基础核心库中，需要支持很多项目，无法支持独立组件Newtonsoft.Json的类型。 建议你在发布消息之前，自己做序列化，然后把json发布到队列中。

[nnhy]

核心库ToJson使用自己的Json序列化，可以使用以下代码更换为系统System.Text.Json。 JsonHelper.Default = new SystemJson();