无法从 CouchDB 反序列化 Json

问题描述

我正在努力反序列化我得到的 Json。

看起来像这样：

{
    "seq": "13-g1AAAACLeJz","id": "c32b670-37899h8c545","changes": [
        {
            "rev": "9-68joc97b73df883a"
        }
    ]
}
{
    "seq": "15-g1AAAACLeJzLYWB-w","id": "f73huvh3-of38j8fh","changes": [
        {
            "rev": "4-10516b0f3"
        }
    ],"deleted": true
}
{
    "seq": "16-g1AAAACL4eJzL","id": "M.Mustermann","changes": [
        {
            "rev": "388-e6d350281"
        }
    ],"deleted": true
}
{
    "seq": "17-g1AAAACLr43_Q","id": "f8h83hf-34f8h","changes": [
        {
            "rev": "4-773re8f44e"
        }
    ],"deleted": true
}
{
    "seq": "18-g1AAwe_g","id": "ewf/34r","changes": [
        {
            "rev": "9-wehch87ewc"
        }
    ],"deleted": true
}
{
    "last_seq": "21-g1AA8wd998rAQ","pending": 0
}

我的模型：

public class Root    {
        public List<Result> results { get; set; } 
        public string last_seq { get; set; } 
        public int pending { get; set; } 
    }    

    public class Result
    {
        public string seq { get; set; }
        public string id { get; set; }
        public List<Change> changes { get; set; }
        public bool? deleted { get; set; }
    }

    public class Change
    {
        public string rev { get; set; }
    }

我尝试了我找到的所有解决方案，但没有任何效果，我仍然收到以下异常：

Newtonsoft.Json.JsonReaderException：阅读完 JSON 内容后遇到附加文本：{.路径 ''，第 2 行，位置 0。 在 Newtonsoft.Json.JsonTextReader.Read()

我尝试了什么：

dynamic array = JsonConvert.DeserializeObject<Root>(json);

Root jsonObject = JsonConvert.DeserializeObject<Root>(json);

var jsonObject = JsonConvert.DeserializeObject<List<Root>>(json);

解决方法

如果您可以要求更改收到的 json，那么下面的 Json 应该可以工作。 如果你不能，我想你将不得不自己解析它。

"results" : [{
"seq": "13-g1AAAACLeJz","id": "c32b670-37899h8c545","changes": [
    {
        "rev": "9-68joc97b73df883a"
    }
]
},{
    "seq": "15-g1AAAACLeJzLYWB-w","id": "f73huvh3-of38j8fh","changes": [
        {
            "rev": "4-10516b0f3"
        } 
    ],"deleted": true
},{
    "seq": "16-g1AAAACL4eJzL","id": "M.Mustermann","changes": [
        {
            "rev": "388-e6d350281"
        }
    ],{
    "seq": "17-g1AAAACLr43_Q","id": "f8h83hf-34f8h","changes": [
        {
            "rev": "4-773re8f44e"
        }
    ],{
    "seq": "18-g1AAwe_g","id": "ewf/34r","changes": [
        {
            "rev": "9-wehch87ewc"
        }
    ],"deleted": true
}],"last": {
    "last_seq": "21-g1AA8wd998rAQ","pending": 0
}

,

您拥有的是一系列粘在一起的 JSON 文档。同样让事情变得更加尴尬的是，最后一个与其他不同。因此，您需要手动解析它们并进行一些检查以查看您拥有的对象类型。您可以使用 JsonReader.SupportMultipleContent 属性。例如，像这样：

//Somewhere to keep the parsed results
var results = new List<Result>();
Root root = null;

var serializer = new JsonSerializer();

using (var stringReader = new StringReader(Json))
using (var jsonReader = new JsonTextReader(stringReader))
{
    //Make sure the JsonReader knows we have multiple documents
    jsonReader.SupportMultipleContent = true;

    while (jsonReader.Read())
    {
        //Read in the next document
        var nextObject = JObject.ReadFrom(jsonReader);

        //Determine if we are on the last item or not
        if(nextObject["last_seq"] != null)
        {
            root = nextObject.ToObject<Root>();
        }
        else
        {
            results.Add(nextObject.ToObject<Result>());
        }
    }
}

//Store the results in the root object since this is how your classes have been structured
if(root != null)
{
    root.results = results;
}