asp.net提取多层嵌套json数据的方法

public string GetJsonValue(JEnumerable<JToken> jToken,string key)

{

IEnumerator enumerator = jToken.GetEnumerator();

while (enumerator.MoveNext())

{

JToken jc = (JToken)enumerator.Current;

if (jc is JObject||((JProperty)jc).Value is JObject)

{

return GetJsonValue(jc.Children(), key);

}

else

{

if (((JProperty)jc).Name == key)

{

return ((JProperty)jc).Value.ToString();

}

}

}

return null;

}

在调用的时候:

string jsonData = "{"name":"lily","age":23,"addr":{"city":"guangzhou","province":"guangdong"}}";

JObject jsonObj = JObject.Parse(jsonData);

Response.Write(GetJsonValue(jsonObj.Children(), "province"));

 

如果有多层嵌套的数组

string jsonData = "{"addr":[{"city":"guangzhou","province":"guangdong"},{"city":"guiyang","province":"guizhou"}]}";

JObject jsonObj = JObject.Parse(jsonData);

JArray jar = JArray.Parse(jsonObj["addr"].ToString());

JObject j = JObject.Parse(jar[0].ToString());

Response.Write(j["city"]);