从JSON数组中提取对象到列表 [英] Extract objects from JSON array to list
问题描述
我正在使用C#代码工作,得到的JSON服务结果如下:
I'm working in C# code and the JSON service result I get looks like this:
[
{"value":"{\"code\":\"MO\",\"description\":\"Monday\",\"isSet\":false}","nr":1}
,{"value":"{\"code\":\"TU\",\"description\":\"Tuesday\",\"isSet\":true}","nr":2}
]
我想使用此数组中反序列化的值对象的列表.但是我的印象是我的代码有点麻烦.
I want to work with a list of deserialized value objects from this array. But my impression is that my code is a bit cumbersome.
JArray j = JArray.Parse(task.Result);
List<Booking> b = j.Select(x => JObject.Parse(x["value"].ToString()).ToObject<Booking>()).ToList();
是否正在选择字符串并将其解析为对象,然后真正将其转换为执行此操作的方法?还是可以更有效地做到这一点?
Is selecting strings and parsing them as objects which then get casted really the way to do this? Or can this be done more efficient?
推荐答案
使用以下类:
public class Value
{
public string Code { get; set; }
public string Description { get; set; }
public bool IsSet { get; set; }
}
public class RootObject
{
[JsonProperty("Booking")]
public Value Value { get; set; }
public int Nr { get; set; }
}
然后反序列化您的JSON字符串,如下所示:
and then deserialize your JSON string like this:
var test = JsonConvert.DeserializeObject<List<RootObject>>(json);
需要不转义JSON字符串:
The JSON string needs to be unescaped:
[
{"value":{"code":"MO","description":"Monday","isSet":false},"nr":1},
{"value":{"code":"TU","description":"Tuesday","isSet":true},"nr":2}
]
value
的问题也是双引号.删除它们,反序列化工作正常.
Also the issue with the value
is the double quotes. Remove them, and the deserialization works fine.
更新
如果您不想操纵JSON字符串,则可以将其反序列化两次.为此,我更改了如下类:
If you do not want to manipulate the JSON string you can deserialize it twice. For this, I changed the classes like follows:
public class Value
{
public string Code { get; set; }
public string Description { get; set; }
public bool IsSet { get; set; }
}
public class RootObject
{
public string Value { get; set; }
public int Nr { get; set; }
}
public class ResultRootObject
{
public Value Value { get; set; }
public int Nr { get; set; }
}
然后我可以将其反序列化为ResultRootObject
:
Then I could deserialize it to ResultRootObject
:
var rootObjects = JsonConvert.DeserializeObject<List<RootObject>>(badJson, new JsonSerializerSettings());
var result = rootObjects.Select(item => new ResultRootObject
{
Value = JsonConvert.DeserializeObject<Value>(item.Value),
Nr = item.Nr
}).ToList();
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