我有一个像这样的json字符串:
{"bwEventList": {
"events": [
{
"summary" : "Leisure Classes Beginning Today",
"subscriptionId" : "",
"calPath" : "%2Fpublic%2Fcals%2FMainCal",
"guid" : "CAL-02a786e6-45f207c3-0147-11c6cf10-000074e3bedework%40lsu.edu",
"recurrenceId" : "",
"link" : "",
"eventlink" : "http://calendar.apps.lsu.edu/feeder/feeder/event/eventView.do?b=de&calPath=%2Fpublic%2Fcals%2FMainCal&guid=CAL-02a786e6-45f207c3-0147-11c6cf10-000074e3bedework%40lsu.edu&recurrenceId=",
"status" : "CONFIRMED",
"start" : {
"allday" : "true",
"shortdate" : "11/22/14",
"longdate" : "November 22, 2014",
"dayname" : "Saturday",
"time" : "12:00 AM",
"utcdate" : "20141122T060000Z",
"datetime" : "20141122",
"timezone" : ""
},
"end" : {
"allday" : "true",
"shortdate" : "11/22/14",
"longdate" : "November 22, 2014",
"dayname" : "Saturday",
"time" : "12:00 AM",
"utcdate" : "20141122T060000Z",
"datetime" : "20141122",
"timezone" : ""
}
我写了这样的模型:
public class Event
{
[JsonProperty(PropertyName ="summary")]
public string summary { get; set; }
[JsonProperty(PropertyName ="subscriptionId")]
public string subscriptionId { get; set; }
[JsonProperty(PropertyName ="calPath")]
public string calPath { get; set; }
[JsonProperty(PropertyName ="guid")]
public string guid { get; set; }
[JsonProperty(PropertyName ="reccurenceId")]
public string recurrenceId { get; set; }
[JsonProperty(PropertyName ="link")]
public string link { get; set; }
[JsonProperty(PropertyName ="eventlink")]
public string eventlink { get; set; }
[JsonProperty(PropertyName ="status")]
public string status { get; set; }
[JsonProperty(PropertyName ="start")]
public Start start { get; set; }
[JsonProperty(PropertyName ="end")]
public End end { get; set; }
[JsonProperty(PropertyName ="location")]
public Location location { get; set; }
[JsonProperty(PropertyName ="contact")]
public Contact contact { get; set; }
[JsonProperty(PropertyName ="calendar")]
public Calendar calendar { get; set; }
[JsonProperty(PropertyName ="categories")]
public List<string> categories { get; set; }
[JsonProperty(PropertyName ="description")]
public string description { get; set; }
[JsonProperty(PropertyName ="cost")]
public string cost { get; set; }
}
public class BwEventList
{
public List<Event> events { get; set; }
}
public class Start
{
[JsonProperty(PropertyName ="allday")]
public string allday { get; set; }
[JsonProperty(PropertyName ="shortdate")]
public string shortdate { get; set; }
[JsonProperty(PropertyName ="longdate")]
public string longdate { get; set; }
[JsonProperty(PropertyName ="dayname")]
public string dayname { get; set; }
[JsonProperty(PropertyName ="time")]
public string time { get; set; }
[JsonProperty(PropertyName ="utcdate")]
public string utcdate { get; set; }
[JsonProperty(PropertyName ="datetime")]
public string datetime { get; set; }
[JsonProperty(PropertyName ="timezone")]
public string timezone { get; set; }
}
public class End
{
public string allday { get; set; }
public string shortdate { get; set; }
public string longdate { get; set; }
public string dayname { get; set; }
public string time { get; set; }
public string utcdate { get; set; }
public string datetime { get; set; }
public string timezone { get; set; }
}
我试图反序列化字符串,然后将列表中的每个事件显示到XML(android)上。下面是我如何获取字符串并反序列化
public async Task<List<ReveilleApp.Core.Models.Event>> GetItems(string feedUrl)
{
try{
using (WebClient webclient = new WebClient ()) {
WebClient n = new WebClient ();
var json = await n.DownloadStringTaskAsync (feedUrl);
var model = JsonConvert.DeserializeObject<List<ReveilleApp.Core.Models.Event>>(json);
return model;
}
}
catch(Exception ex)
{
Console.WriteLine(ex.Message);
return null;
}
}
返回项目以填充listView。我遇到此错误
Cannot deserialize the current JSON object (e.g. {"name":"value"}) into type 'System.Collections.Generic.List`1[ReveilleApp.Core.Models.Event]' because the type requires a JSON array (e.g. [1,2,3]) to deserialize correctly.
To fix this error either change the JSON to a JSON array (e.g. [1,2,3]) or change the deserialized type so that it is a normal .NET type (e.g. not a primitive type like integer, not a collection type like an array or List<T>) that can be deserialized from a JSON object. JsonObjectAttribute can also be added to the type to force it to deserialize from a JSON object.
我尝试了很多解决方案但没有工作
答案 0 :(得分:3)
您的模型与Json列不匹配。
Leonel纠正了模特:
但我想建议你的方法也要修改一下:
public async Task<RootObject> GetItems(string feedUrl)
{
try
{
using (WebClient webclient = new WebClient())
{
var json = await webclient.DownloadStringTaskAsync(feedUrl);
var model = JsonConvert.DeserializeObject<RootObject>(json);
return model;
}
}
catch(Exception ex)
{
Console.WriteLine(ex.Message);
return null;
}
}
您也可以将其作为列表。
当你调用这个方法时
var root = GetItems(string feedUrl) as RootObject; // Ex call for method
if(root != null && root.bwEventList != null && root.bwEventList.Count > 0) // Just checking the conditions to make sure everthing is OK.
{
List<Event> eventsList = root.bwEventList.events; // Here you will get it as a list.
}
答案 1 :(得分:2)
您的型号存在问题,因为它与您的JSON
不同,我会重新创建您的模式。
尝试设置并使用此模型:
public class Start
{
public string allday { get; set; }
public string shortdate { get; set; }
public string longdate { get; set; }
public string dayname { get; set; }
public string time { get; set; }
public string utcdate { get; set; }
public string datetime { get; set; }
public string timezone { get; set; }
}
public class End
{
public string allday { get; set; }
public string shortdate { get; set; }
public string longdate { get; set; }
public string dayname { get; set; }
public string time { get; set; }
public string utcdate { get; set; }
public string datetime { get; set; }
public string timezone { get; set; }
}
public class Event
{
public string summary { get; set; }
public string subscriptionId { get; set; }
public string calPath { get; set; }
public string guid { get; set; }
public string recurrenceId { get; set; }
public string link { get; set; }
public string eventlink { get; set; }
public string status { get; set; }
public Start start { get; set; }
public End end { get; set; }
}
public class BwEventList
{
public List<Event> events { get; set; }
}
public class RootObject
{
public BwEventList bwEventList { get; set; }
}