带有私有构造函数的类型的JsonSerializationException [英] JsonSerializationException for type with private constructor

问题描述

我正在将NLog日志记录语句持久保存到我的RavenDb数据库中. LogEventInfo类代表一个日志语句，它具有一个带有私有构造函数的属性LogLevel. LogLevel的实例(信息，警告等)是通过调用私有构造函数的静态只读属性创建的.

I am persisting NLog logging statements to my RavenDb database. The LogEventInfo class, which represents a log statement, has a property, LogLevel, with a private constructor. Instances of LogLevel (Info, Warn, etc.) are created via static, readonly properties that call the private constructor.

问题是我希望从数据库中读取消息，并查询它们会引发Json.Net序列化错误:

The problem is that I wish to read the messages out of the database and querying for them is throwing a Json.Net serialization error:

找不到用于NLog.LogLevel类型的构造函数.一个类应该具有一个默认的构造函数，一个带有参数的构造函数或一个标有JsonConstructor属性的构造函数.路径"Level.Name".

Unable to find a constructor to use for type NLog.LogLevel. A class should either have a default constructor, one constructor with arguments or a constructor marked with the JsonConstructor attribute. Path 'Level.Name'.

如何解决该错误?可以在这里创建某种Raven索引吗?

How can I get around the error? Could creating some kind of Raven index help here?

推荐答案

我认为最简单的方法是创建一个自定义类来保存所有日志信息.

I think the easiest way to do this, is to create a custom class to hold all the log information.

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