无法在WCF REST中解析JSON数组 [英] Unable to parse JSON array in WCF REST
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问题描述
这是我的JSON文件,其中包含应用程序"的多个对象:
This is my JSON file that contains multiple objects of "Application":
{"Application":[{"appid":"0","appname":"application0"},
{"appid":"1","appname":"application1"},
....
]}
我正在从Android代码中将其接收到WCF REST服务方法中:
I'm receiving it from Android code into my WCF REST service method:
[WebInvoke(Method = "POST", UriTemplate = "/AcceptApp", RequestFormat = WebMessageFormat.Json,
ResponseFormat = WebMessageFormat.Xml, BodyStyle = WebMessageBodyStyle.WrappedRequest)]
[OperationContract]
string AcceptApplication(Stream jsonstring);
这是方法定义:
public string AcceptApplication(Stream inputStream)
{
StreamReader r = new StreamReader(inputStream);
string jsonstring = r.ReadToEnd();
try
{
List<ApplicationEntity> list = JsonConvert.DeserializeObject<List<ApplicationEntity>>(jsonstring);
for (int i = 0; i < list.Count; i++)
{
// using data
}
}
catch (Exception E)
{
Logger.Error(E.Message);
}
我的ApplicationEntity:
My ApplicationEntity:
public class ApplicationEntity
{
public string appid { get; set; }
public string appname { get; set; }
}
我正在获取jsonstring,但出现错误:
I'm getting jsonstring , but error I'm getting:
Newtonsoft.Json.JsonSerializationException: Cannot deserialize the current JSON object (e.g.
{"name":"value"}) into type
'System.Collections.Generic.List`1[ApplicationEntity]' 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.
推荐答案
您要解析的JSON字符串不是列表或数组.它是一个具有名为"Application"
的属性的对象,该属性是一个数组.
试试这个:
The JSON string you are trying to parse is not a list or an array. It is an object with a property called "Application"
that is an array.
Try this:
public class ApplicationObject
{
public List<ApplicationEntity> Application { get; set; }
}
...
var apps = JsonConvert.DeserializeObject<ApplicationObject>(jsonstring);
现在您可以访问apps.Application
上的列表.
Now you can access the list on apps.Application
.
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