我对Json的需求并不多，所以它对我来说仍然处于令人头疼的程度。如果这是一个骗局我道歉，但我在搜索中发现的一切都与不同的问题有关。
我正在尝试使用Walmart API，我的数据很好（我在下面添加了一条记录供参考）。我能找到的所有现有问题似乎都在处理空数据。这是关于空数据的出现。
问题/问题：我对API的调用导致了巨大的回报 - 在1,000个记录中（385MB未压缩）。当我反序列化时，我没有异常，我仍然得到1000的记录，但返回列表中的每个属性都是null或0.因此，Json返回一个泛型列表，列表有记录，记录不为空，但所有每个记录中的值/属性值为null（如果是数字，则为0）。
我在序列化过程中设置了一个断点，我可以看到json数据正确进入。它只是以null / 0出现。
如果您有任何想法 - 我非常感谢您提供的任何帮助。感谢您抽出时间阅读本文，并提前获得任何帮助。
不受欢迎的结果：
Item_ID itemId parentItemId name salePrice upc shortDescription longDescription brandName thumbnailImage mediumImage largeImage productTrackingUrl ninetySevenCentShipping standardShipRate size color marketplace shipToStore freeShipToStore productUrl customerRating numReviews customerRatingImage rollBack bundle clearance stock gender age freeShippingOver50Dollars availableOnline
1 0 0 NULL 0 NULL NULL NULL NULL NULL NULL NULL NULL 0 0 NULL NULL 0 0 0 NULL NULL 0 NULL 0 0 0 NULL NULL NULL 0 0
序列化逻辑：
public API_Json_Special_Feeds.RootObject testExistingJson()
{
string json = "";
//I saved a response to a text file so I don't overload the API with testing. The same problem happens whether or not I load from API or text file.
using(TextReader tr = new StreamReader(@"C:jsonsingle.txt"))
{
json = tr.ReadToEnd();//string
}
var serializer = new DataContractJsonSerializer(typeof(API_Json_Special_Feeds.RootObject));
var ms = new MemoryStream(Encoding.UTF8.GetBytes(json));
var data = (API_Json_Special_Feeds.RootObject)serializer.ReadObject(ms);
return data;
}
示例Json记录：
{"items":[ {
"itemId" : 12321374,
"parentItemId" : 12321374,
"name" : "Castle Tent Loft Bed w/ Slide ; Under Bed Storage, Blue",
"salePrice" : 369.0,
"upc" : "081438383996",
"shortDescription" : "Finished in White powder coat with Blue and Red Microfiber fabric tent",
"longDescription" : "Fun Castle Tent Bunk Bed with Slide includes a tent over twin bed and a covered hiding place below. The covered hiding place below can also be used as under bed storage. The top of the slide is tented with a tower with peek through, fold down window covers. <ul class="noindent"><li>Finished in White powder coat with Blue and Red Microfiber fabric tent, 100% polyester.</li><li>Uses a standard twin size mattress (sold separately).</li><li>Only use a twin size mattress that is 74-75" long and 37.5-38.5" wide.</li><li>Bunk bed is tested and certified by an independent testing laboratory to meet all minimum requirements of ASTM F1427-07 and U.S. CFR 1213 and 1513.</li><li>Some assembly required. 79-3/4" x 101-1/4" x 92" tall.</li></ul>",
"brandName" : "Castle",
"thumbnailImage" : "https://i5.walmartimages.com/asr/a1bac83b-68f2-427e-82ac-97ce1e11b0c6_1.f18ff9fc14c7aca2d9c92c81f4b5c8ba.jpeg?odnHeight=100&odnWidth=100&odnBg=ffffff",
"mediumImage" : "https://i5.walmartimages.com/asr/a1bac83b-68f2-427e-82ac-97ce1e11b0c6_1.f18ff9fc14c7aca2d9c92c81f4b5c8ba.jpeg?odnHeight=180&odnWidth=180&odnBg=ffffff",
"largeImage" : "https://i5.walmartimages.com/asr/a1bac83b-68f2-427e-82ac-97ce1e11b0c6_1.f18ff9fc14c7aca2d9c92c81f4b5c8ba.jpeg?odnHeight=450&odnWidth=450&odnBg=ffffff",
"productTrackingUrl" : "http://linksynergy.walmart.com/fs-bin/click?id=|LSNID|&offerid=223073.7200&type=14&catid=8&subid=0&hid=7200&tmpid=1082&RD_PARM1=http%253A%252F%252Fwww.walmart.com%252Fip%252FCastle-Tent-Loft-Bed-w-Slide--Under-Bed-Storage-Blue%252F12321374%253Faffp1%253D%257Capk%257C%2526affilsrc%253Dapi",
"ninetySevenCentShipping" : false,
"standardShipRate" : 0.0,
"size" : "Twin",
"color" : "Blue",
"marketplace" : false,
"shipToStore" : true,
"freeShipToStore" : true,
"productUrl" : "http://c.affil.walmart.com/t/api00rb?l=http%3A%2F%2Fwww.walmart.com%2Fip%2FCastle-Tent-Loft-Bed-w-Slide--Under-Bed-Storage-Blue%2F12321374%3Faffp1%3D%7Capk%7C%26affilsrc%3Dapi%26veh%3Daff%26wmlspartner%3Dreadonlyapi",
"customerRating" : "4.574",
"numReviews" : 54,
"customerRatingImage" : "http://i2.walmartimages.com/i/CustRating/4_6.gif",
"rollBack" : true,
"bundle" : true,
"clearance" : false,
"stock" : "Available",
"gender" : "Boys",
"age" : "Child",
"freeShippingOver50Dollars" : true,
"availableOnline" : true
}]
}
Json Class：
public class API_Json_Special_Feeds
{
[DataContract]
public class Item
{
public int itemId { get; set; }
public int parentItemId { get; set; }
public string name { get; set; }
public double salePrice { get; set; }
public string upc { get; set; }
public string shortDescription { get; set; }
public string longDescription { get; set; }
public string brandName { get; set; }
public string thumbnailImage { get; set; }
public string mediumImage { get; set; }
public string largeImage { get; set; }
public string productTrackingUrl { get; set; }
public bool ninetySevenCentShipping { get; set; }
public double standardShipRate { get; set; }
public string size { get; set; }
public string color { get; set; }
public bool marketplace { get; set; }
public bool shipToStore { get; set; }
public bool freeShipToStore { get; set; }
public string productUrl { get; set; }
public string customerRating { get; set; }
public int numReviews { get; set; }
public string customerRatingImage { get; set; }
public bool rollBack { get; set; }
public bool bundle { get; set; }
public bool clearance { get; set; }
public string stock { get; set; }
public string gender { get; set; }
public string age { get; set; }
public bool freeShippingOver50Dollars { get; set; }
public bool availableOnline { get; set; }
}
[DataContract]
public class RootObject
{
[DataMember]
public List<Item> items { get; set; }
}
}
答案 0 :(得分：4)
您应该将[DataMember]属性添加到Item类中的属性。
现在只有“项目”列表被“检测到”，而项目对象被序列化为默认值
答案 1 :(得分：1)
第1步：
在此站点中放下您的JSON，以构建您的C＃POCO模型（http://json2csharp.com/）
第2步：
从Newtonsoft获取Json.Net。
第3步：
RootObject myObject = JsonConvert.DeserializeObject<RootObject>(jsonString);
简单地回到原点：
string jsonString = JsonConvert.SerializeObject<RootObject>(myObject);
第4步：
阅读关于Json.Net的所有信息，因为它在处理.Net中的JSON方面远远优于其他任何东西。此外，如果您喜欢冒险，请阅读有关动态类型的信息，如果您已经没有了。 Json.Net和C＃中的动态类型=做同样事情的代码少了很多。
最后一件事。不需要任何属性，只需要有一个空构造函数，或者没有构造函数。