c# - 无法将类型为 'Newtonsoft.Json.Linq.JObject' 的对象转换为类型

Question

这段代码:

var commandMessage = new CommandMessage { CorrelationId = Guid.NewGuid() };
var json = JsonConvert.SerializeObject(commandMessage);
var myCommandMessage = (CommandMessage)JsonConvert.DeserializeObject(json);

给出这个错误信息:

Additional information: Unable to cast object of type 'Newtonsoft.Json.Linq.JObject' to type 'QueueConnectionStringTester.CommandMessage'

这是 CommandMessage 类:

public class CommandMessage
{
    public Guid CorrelationId { get; set; }        
}

我在这里错过了什么？

Answer 1

反序列化时需要指定类型。

或者:

var myCommandMessage = JsonConvert.DeserializeObject<CommandMessage>(json);

或者:

var myCommandMessage = (CommandMessage)JsonConvert.DeserializeObject(json, typeof(CommandMessage));