使用Newtonsoft把list<object>转json数组

JsonSerializer serializer = new JsonSerializer();
StringWriter sw = new StringWriter();
serializer.Serialize(new JsonTextWriter(sw), groupList);
string json = sw.GetStringBuilder().ToString();

使用Newtonsoft 把string字串串转为json对象

using Newtonsoft.Json.Linq;

JObject jsonObj = JObject.Parse(tokenjson);
token = jsonObj["access_token"].ToString();