.NET Core(C#) System.Text.Json自定义转换器及获取属性名称的方法及示例代码

1、自定义的实例类

public class MyMailContent
{
    public string Name { get; set; }
    public string Subject { get; set; }
    public string Body { get; set; }
}

2、自定义转换器JsonConverter

public class MyMailContentJsonConverter : JsonConverter{    public override MyMailContent Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)    {        if (reader.TokenType != JsonTokenType.StartObject)        {            throw new JsonException();        }        var mailContent = new MyMailContent();        while (reader.Read())        {            if (reader.TokenType == JsonTokenType.EndObject)            {                return mailContent;            }            if (reader.TokenType == JsonTokenType.PropertyName)            {                var propertyName = reader.GetString();                reader.Read();                switch (propertyName)                {                    case "Name":                        mailContent.Name = reader.GetString();                        break;                    case "Subject":                        mailContent.Subject = reader.GetString();                        break;                    case "Body":                        string body = reader.GetString();                        //body的内容做一些处理                        mailContent.Body = body;                        break;                }            }        }        throw new JsonException();    }    public override void Write(Utf8JsonWriter writer, MyMailContent mailcontent, JsonSerializerOptions options)    {        throw new NotImplementedException();    }}private static JsonSerializerOptions _jsonDeserializeOptions = new(){    ReadCommentHandling = JsonCommentHandling.Skip,    AllowTrailingCommas = true,    Converters =    {        new MyMailContentJsonConverter()    }};

3、使用自定义转换器

var jsonstring = JsonSerializer.Serialize(new MyMailContent
{
    Name = "邮件",
    Subject = "自定义转换器写法",
    Body = "邮件内容"
});
var MailContent = JsonSerializer.Deserialize(jsonstring, _jsonDeserializeOptions);