我有一些我需要解析的以下
JSON格式的数据:
{ "status":0,"timestamp":"8:20pm","routes":[ { "directions":[ "E Towne","ETP" ],"routeID":"30" },{ "directions":[ "Johnson","Observatory" ],"routeID":"81" } ] }
使用json.net,我想得到以下输出:
30 E Towne – ETP
81 Johnson – Observatory
使用下面的代码,我得到以下不正确的输出:
30 E Towne – ETP
81 E Towne – ETP
如何将方向数组项写入相应的routeID项?我的代码:
public class Route { public string routeID { get; set; } public string directions { get; set; } } private void routeClient_DownloadStringCompleted(object sender,DownloadStringCompletedEventArgs e) { string jsonResults_routes = e.Result; JObject routeData = JObject.Parse(jsonResults_routes); JArray routeIdArray = (JArray)routeData["routes"]; JArray routeDirections = (JArray)routeData["routes"][0]["directions"]; List<Route> l = new List<Route>(); for (int i = 0; i < routeIdArray.Count; i++) { Route BusRoutes = new Route(); JObject routeIDarrayObject = (JObject)routeIdArray[i]; BusRoutes.routeID = (string)routeIDarrayObject["routeID"]; string sep = " - "; string bothDirections = String.Join(sep,routeDirections); List<string> sc = new List<string>(); string[] direction = new string[]{bothDirections}; sc.AddRange(direction); foreach (string direx in sc) { BusRoutes.directions = direx; } l.Add(BusRoutes); } var newList = l.OrderBy(x => x.routeID).ToList(); lbRoutesData.ItemsSource = newList; }
解决方法
@competent_tech在分析中是正确的.如果我可以提出建议,我认为如果你使用实际物体会更自然.例如:
public class RouteInfo { public List<string> Directions { get; set; } public string RouteID { get; set; } } public class RouteData { public int Status { get; set; } public string Timestamp { get; set; } public List<RouteInfo> Routes { get; set; } }
在你的方法中:
var routeData = JsonConvert.DeserializeObject<RouteData>(e.Result); return routeData.Routes .Select(r => new Route { routeId = r.RouteID,directions = String.Join(" - ",r.Directions) }) .OrderBy(r => r.routeId) .ToList();
或者更自然地以其他方式操纵您的类型对象.
编辑:要获得基于JSON字符串生成类的简单方法,请转到json2csharp.