早上好，
我使用Newtonsoft.JSON从Import Io反序列化JSON响应。我已成功使用http://json2csharp.com/在一个实例中成功构建数据模型以获取对数据的访问权限，但在该实例中仅返回了一个JSON对象。我现在正在处理一个新的JSON，它正在返回多个对象，并且我遇到了以下错误消息：
Newtonsoft.Json.JsonSerializationException：无法将当前JSON对象（例如{＆＃34; name＆＃34;：＆＃34; value＆＃34;}）反序列化为类型＆System; System.Collections.Generic.List `1 [OSP.Shop_DTO + RootObject]＆＃39;因为该类型需要JSON数组（例如[1,2,3]）才能正确反序列化。 要修复此错误，请将JSON更改为JSON数组（例如[1,2,3]）或更改反序列化类型，使其成为普通的.NET类型（例如，不是像整数这样的基本类型，而不是类似的集合类型可以从JSON对象反序列化的数组或List。 JsonObjectAttribute也可以添加到类型中以强制它从JSON对象反序列化。 Path＆＃39; url＆＃39;，第1行，第7位。＆＃34;
我的JSON看起来像这样：
{
"url": "http://www.myurl.com/-shop-item.html",
"result": {
"extractorData": {
"url": "http://www.myurl.com/-shop-item.html",
"resourceId": "1db49f66afc2f234cb5ab470f0c39e0c",
"data": [
{
"group": [
{
"BN_shop_1KG": [
{
"text": "$36.00"
}
],
"BN_shop_2KG": [
{
"text": "$69"
}
],
"BN_shop_3KG": [
{
"text": "$97"
}
],
"BN_VEGE_5KG": [
{
"text": "3 KG = $97"
}
],
"BN_shop_4KG": [
{
"text": "$124"
}
],
"BN_shop_5KG": [
{
"text": "$149"
}
]
}
]
}
]
},
"pageData": {
"resourceId": "1db49f66afc2f234cb5ab470f0c39e0c",
"statusCode": 200,
"timestamp": 1476432605275
},
"timestamp": 1476432606594,
"sequenceNumber": 0
}
}{
"url": "http://www.myurl.com/-shop-concentrate.html",
"result": {
"extractorData": {
"url": "http://www.myurl.com/-shop-concentrate.html",
"resourceId": "dd4837cc7d0085eae005243c7bd8ca8a",
"data": [
{
"group": [
{
"BN_shop_1KG": [
{
"text": "$27.00"
}
],
"BN_shop_2KG": [
{
"text": "$49"
}
],
"BN_shop_3KG": [
{
"text": "$69"
}
],
"BN_VEGE_5KG": [
{
"text": "3 KG = $69"
}
],
"BN_shop_4KG": [
{
"text": "$84"
}
],
"BN_shop_5KG": [
{
"text": "$99"
}
]
}
]
}
]
},
"pageData": {
"resourceId": "dd4837cc7d0085eae005243c7bd8ca8a",
"statusCode": 200,
"timestamp": 1476432604237
},
"timestamp": 1476432605124,
"sequenceNumber": 1
}
}{
"url": "http://www.myurl.comshop-matrix.html",
"result": {
"extractorData": {
"url": "http://www.myurl.comshop-matrix.html",
"resourceId": "deee30ffa0098e017a06c0e0c805e133",
"data": [
{
"group": [
{
"BN_shop_1KG": [
{
"text": "$29.00"
}
],
"BN_shop_2KG": [
{
"text": "$56"
}
],
"BN_shop_3KG": [
{
"text": "$79"
}
],
"BN_VEGE_5KG": [
{
"text": "3 KG = $79"
}
],
"BN_shop_4KG": [
{
"text": "$99"
}
],
"BN_shop_5KG": [
{
"text": "$119"
}
]
}
]
}
]
},
"pageData": {
"resourceId": "deee30ffa0098e017a06c0e0c805e133",
"statusCode": 200,
"timestamp": 1476432602408
},
"timestamp": 1476432603204,
"sequenceNumber": 2
}
}{
"url": "http://www.myurl.comsoy-shop-item.html",
"result": {
"extractorData": {
"url": "http://www.myurl.comsoy-shop-item.html",
"resourceId": "5593aad40f95ba868626e47a1b550813",
"data": [
{
"group": [
{
"BN_shop_1KG": [
{
"text": "$25.00"
}
],
"BN_shop_2KG": [
{
"text": "$45"
}
],
"BN_shop_3KG": [
{
"text": "$89"
}
],
"BN_VEGE_5KG": [
{
"text": "5 KG = $89"
}
],
"BN_shop_4KG": [
{
"text": "$175"
}
],
"BN_shop_5KG": [
{
"text": "$339"
}
]
}
]
}
]
},
"pageData": {
"resourceId": "5593aad40f95ba868626e47a1b550813",
"statusCode": 200,
"timestamp": 1476432602479
},
"timestamp": 1476432603847,
"sequenceNumber": 3
}
}{
"url": "http://www.myurl.compea-shop.html",
"result": {
"extractorData": {
"url": "http://www.myurl.compea-shop.html",
"resourceId": "f91e05d0265ab5a5f7f948c57a05bced",
"data": [
{
"group": [
{
"BN_shop_1KG": [
{
"text": "$25.00"
}
],
"BN_shop_2KG": [
{
"text": "$45"
}
],
"BN_shop_3KG": [
{
"text": "$89"
}
],
"BN_VEGE_5KG": [
{
"text": "5 KG = $89"
}
],
"BN_shop_4KG": [
{
"text": "$169"
}
],
"BN_shop_5KG": [
{
"text": "$319"
}
]
}
]
}
]
},
"pageData": {
"resourceId": "f91e05d0265ab5a5f7f948c57a05bced",
"statusCode": 200,
"timestamp": 1476432605227
},
"timestamp": 1476432606451,
"sequenceNumber": 4
}
}
模型看起来像这样：
public class BNShop1KG
{
public string text { get; set; }
}
public class BNShop2KG
{
public string text { get; set; }
}
public class BNShop3KG
{
public string text { get; set; }
}
public class BNVEGE5KG
{
public string text { get; set; }
}
public class BNShop4KG
{
public string text { get; set; }
}
public class BNShop5KG
{
public string text { get; set; }
}
public class Group
{
public List<BNShop1KG> BN_shop_1KG { get; set; }
public List<BNShop2KG> BN_shop_2KG { get; set; }
public List<BNShop3KG> BN_shop_3KG { get; set; }
public List<BNVEGE5KG> BN_VEGE_5KG { get; set; }
public List<BNShop4KG> BN_shop_4KG { get; set; }
public List<BNShop5KG> BN_shop_5KG { get; set; }
}
public class Datum
{
public List<Group> group { get; set; }
}
public class ExtractorData
{
public string url { get; set; }
public string resourceId { get; set; }
public List<Datum> data { get; set; }
}
public class PageData
{
public string resourceId { get; set; }
public int statusCode { get; set; }
public long timestamp { get; set; }
}
public class Result
{
public ExtractorData extractorData { get; set; }
public PageData pageData { get; set; }
public long timestamp { get; set; }
public int sequenceNumber { get; set; }
}
public class RootObject
{
public string url { get; set; }
public Result result { get; set; }
}
在我的代码中，我试图访问＆＃39;文本＆＃39; ＆＃39; BN_shop_1KG＆＃39;中的价值来自第一个JSON对象。这个项目：
"BN_shop_1KG": [
{
"text": "$36.00"
}
我在我的代码中尝试了以下内容，但收到了上述错误。根据我的理解阅读一些以前的线程，我将需要使用反序列化到List来处理以这种方式收到的JSON：
List<Shop_DTO.RootObject> obj = JsonConvert.DeserializeObject<List<Shop_DTO.RootObject>>(_rawHtmlResult);
var price = obj.First().result.extractorData.data[0].group[0].BN_shop_1kg[0].text;
Debug.WriteLine("Price for item {0}", price);
任何帮助都会非常感激，我已经坚持了几天:(
答案 0 :(得分：1)
Json文件无效。由于它包含多个Json对象，它应该是一个需要由[]包装的Json数组，而另一个是在每个Json对象之间，你需要＆＃34;，＆＃34;
var jsonText = @"[{
""url"": ""http://www.myurl.com/-shop-item.html"",
""result"": {
""extractorData"": {
""url"": ""http://www.myurl.com/-shop-item.html"",
""resourceId"": ""1db49f66afc2f234cb5ab470f0c39e0c"",
""data"": [
{
""group"": [
{
""BN_shop_1KG"": [
{
""text"": ""$36.00""
}
],
""BN_shop_2KG"": [
{
""text"": ""$69""
}
],
""BN_shop_3KG"": [
{
""text"": ""$97""
}
],
""BN_VEGE_5KG"": [
{
""text"": ""3 KG = $97""
}
],
""BN_shop_4KG"": [
{
""text"": ""$124""
}
],
""BN_shop_5KG"": [
{
""text"": ""$149""
}
]
}
]
}
]
},
""pageData"": {
""resourceId"": ""1db49f66afc2f234cb5ab470f0c39e0c"",
""statusCode"": 200,
""timestamp"": 1476432605275
},
""timestamp"": 1476432606594,
""sequenceNumber"": 0
}
},{
""url"": ""http://www.myurl.com/-shop-concentrate.html"",
""result"": {
""extractorData"": {
""url"": ""http://www.myurl.com/-shop-concentrate.html"",
""resourceId"": ""dd4837cc7d0085eae005243c7bd8ca8a"",
""data"": [
{
""group"": [
{
""BN_shop_1KG"": [
{
""text"": ""$27.00""
}
],
""BN_shop_2KG"": [
{
""text"": ""$49""
}
],
""BN_shop_3KG"": [
{
""text"": ""$69""
}
],
""BN_VEGE_5KG"": [
{
""text"": ""3 KG = $69""
}
],
""BN_shop_4KG"": [
{
""text"": ""$84""
}
],
""BN_shop_5KG"": [
{
""text"": ""$99""
}
]
}
]
}
]
},
""pageData"": {
""resourceId"": ""dd4837cc7d0085eae005243c7bd8ca8a"",
""statusCode"": 200,
""timestamp"": 1476432604237
},
""timestamp"": 1476432605124,
""sequenceNumber"": 1
}
},{
""url"": ""http://www.myurl.comshop-matrix.html"",
""result"": {
""extractorData"": {
""url"": ""http://www.myurl.comshop-matrix.html"",
""resourceId"": ""deee30ffa0098e017a06c0e0c805e133"",
""data"": [
{
""group"": [
{
""BN_shop_1KG"": [
{
""text"": ""$29.00""
}
],
""BN_shop_2KG"": [
{
""text"": ""$56""
}
],
""BN_shop_3KG"": [
{
""text"": ""$79""
}
],
""BN_VEGE_5KG"": [
{
""text"": ""3 KG = $79""
}
],
""BN_shop_4KG"": [
{
""text"": ""$99""
}
],
""BN_shop_5KG"": [
{
""text"": ""$119""
}
]
}
]
}
]
},
""pageData"": {
""resourceId"": ""deee30ffa0098e017a06c0e0c805e133"",
""statusCode"": 200,
""timestamp"": 1476432602408
},
""timestamp"": 1476432603204,
""sequenceNumber"": 2
}
},{
""url"": ""http://www.myurl.comsoy-shop-item.html"",
""result"": {
""extractorData"": {
""url"": ""http://www.myurl.comsoy-shop-item.html"",
""resourceId"": ""5593aad40f95ba868626e47a1b550813"",
""data"": [
{
""group"": [
{
""BN_shop_1KG"": [
{
""text"": ""$25.00""
}
],
""BN_shop_2KG"": [
{
""text"": ""$45""
}
],
""BN_shop_3KG"": [
{
""text"": ""$89""
}
],
""BN_VEGE_5KG"": [
{
""text"": ""5 KG = $89""
}
],
""BN_shop_4KG"": [
{
""text"": ""$175""
}
],
""BN_shop_5KG"": [
{
""text"": ""$339""
}
]
}
]
}
]
},
""pageData"": {
""resourceId"": ""5593aad40f95ba868626e47a1b550813"",
""statusCode"": 200,
""timestamp"": 1476432602479
},
""timestamp"": 1476432603847,
""sequenceNumber"": 3
}
},{
""url"": ""http://www.myurl.compea-shop.html"",
""result"": {
""extractorData"": {
""url"": ""http://www.myurl.compea-shop.html"",
""resourceId"": ""f91e05d0265ab5a5f7f948c57a05bced"",
""data"": [
{
""group"": [
{
""BN_shop_1KG"": [
{
""text"": ""$25.00""
}
],
""BN_shop_2KG"": [
{
""text"": ""$45""
}
],
""BN_shop_3KG"": [
{
""text"": ""$89""
}
],
""BN_VEGE_5KG"": [
{
""text"": ""5 KG = $89""
}
],
""BN_shop_4KG"": [
{
""text"": ""$169""
}
],
""BN_shop_5KG"": [
{
""text"": ""$319""
}
]
}
]
}
]
},
""pageData"": {
""resourceId"": ""f91e05d0265ab5a5f7f948c57a05bced"",
""statusCode"": 200,
""timestamp"": 1476432605227
},
""timestamp"": 1476432606451,
""sequenceNumber"": 4
}
}]"
然后您可以使用您的代码来获取价格。顺便说一下，你的代码中有一个拼写错误，BN_shop_1kg应该是BN_shop_1KG