c# - 从 asp.net POST 方法返回 JSON 时出现 "Unable to translate Unicode character\\uD83C"错误

Question

我在 MVC 项目中开发了一个 web api。我在我的 post 方法中返回一个 JToken 对象。通常我的 api 工作正常，但有时在特定数据中我会收到此错误:

  "Message": "An error has occurred.",
  "ExceptionMessage": "The 'ObjectContent`1' type failed to serialize the response body for content type 'application/json; charset=utf-8'.",
  "ExceptionType": "System.InvalidOperationException",
  "StackTrace": null,
  "InnerException": {
  "Message": "An error has occurred.",
  "ExceptionMessage": "Unable to translate Unicode character \\uD83C 
   at index 411 to specified code page."

这是我的发帖方式

public JToken Post([FromBody]Classes.Search search)
    {

        Classes.ReturnSearch returnSearch = new Classes.ReturnSearch();
        try
        {
            string con = System.Configuration.ConfigurationManager.ConnectionStrings["TConnectionString"].ConnectionString;
            SqlConnection cn = new SqlConnection(con);
            SqlDataAdapter sqlDataAdapter = new SqlDataAdapter("SP_Searchi", cn);
            sqlDataAdapter.SelectCommand.CommandType = CommandType.StoredProcedure;
            sqlDataAdapter.SelectCommand.Parameters.Add(new SqlParameter("@word", search.word));

            sqlDataAdapter.SelectCommand.Parameters.Add(new SqlParameter("@num", search.num));
            DataSet d = new DataSet();
            sqlDataAdapter.Fill(d);
            DataTable table = d.Tables[0];

            foreach(DataRow row in table.Rows)
            {
                string result=row[1].ToString();

                returnSearch.search_items.Add(new Classes.SearchItem(row[0].ToString(), row[1].ToString(),search.word));
            }
            returnSearch.status = "Success";


            return JObject.Parse(JsonConvert.SerializeObject(returnSearch));
        }
        catch (Exception e)
        {
            returnSearch.status = "Failed";
            returnSearch.search_items = null;
            ValuesController.Log("Error in Search: "+e.Message);
            return JObject.Parse(JsonConvert.SerializeObject(returnSearch));
        }


    }

有什么问题？!

Answer 1

这是一个表情符号修改器。您可能会在解析输入的表情符号后看到它(可以拆分为多个\u#### 实例)。