反序列化JSON - 如何忽略根元素？

问题描述

我耗费返回JSON结果包裹'D'根元素中的WCF服务。 JSON响应看起来是这样的：

I'm consuming a WCF service that returns JSON results wrapped inside the 'd' root element. The JSON response looks like this:

{"d":[
  {
    "__type":"DiskSpaceInfo:#Diagnostics.Common",
    "AvailableSpace":38076567552,
    "Drive":"C:\\",
    "TotalSpace":134789197824
  },
  {
    "__type":"DiskSpaceInfo:#Diagnostics.Common",
    "AvailableSpace":166942183424,
    "Drive":"D:\\",
    "TotalSpace":185149157376
  }
]}

我不想使用动态类型，我有我想要反序列化时使用我的课Diagnostics.Common.DiskSpaceInfo。

I don't want to use dynamic typing, I have my class Diagnostics.Common.DiskSpaceInfo that I want to use when deserializing.

我使用Json.NET（Netwonsoft JSON ）。

I am using Json.NET (Netwonsoft JSON).

现在的问题是如何分辨它忽略根元素（即D元素）和解析里面是什么。

The question is how to tell it to ignore the root element (that 'd' element) and parse what is inside.

最好的解决方案我至今是使用匿名类型：

The best solution I have so far is to use an anonymous type:

DiskSpaceInfo[] result = JsonConvert.DeserializeAnonymousType(json, new
    {
        d = new DiskSpaceInfo[0]
    }).d;

这确实可以工作，但我不很喜欢。有另一种方式？我想是这样的：

this actually works but I don't like it very much. Is there another way? What I would like is something like:

DiskSpaceInfo[] result = JsonConvert.Deserialize(json, skipRoot: true);

或类似的东西...

推荐答案

如果您知道在这种情况下，如搜索，这是一个根节点那么你可以做以下D。

If you know what to search like in this case "d" which is a root node then you can do the following.

JObject jo = JObject.Parse(json);
DiskSpaceInfo[] diskSpaceArray = jo.SelectToken("d", false).ToObject<DiskSpaceInfo[]>();

如果您只是想忽略根类，你不知道，那么你可以使用@ GIU待办事项解决方案，这一点你可以使用 test2.ToObject< D​​iskSpaceInfo []>（）; 而不是 Console.Write（测试2）;

If you simply want to ignore the root class which you do not know then you can use the "@Giu Do" solution just that you can use test2.ToObject<DiskSpaceInfo[]>(); instead of the Console.Write(test2);

        JObject o = JObject.Parse(json);
        if (o != null)
        {
            var test = o.First;
            if (test != null)
            {
                var test2 = test.First;
                if (test2 != null)
                {
                    DiskSpaceInfo[] diskSpaceArray = test2.ToObject<DiskSpaceInfo[]>();
                }
            }
        }

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