Question

我是C＃中Web服务的初学者，用于生成数据JSON。所以，我有Web服务来抛出格式为JSON的数据，这是我的结果JSON：

[{"RESULT":"2","TKN":"E952B4C5FA9","URL_HOME":"My_Url_Home"}]

如何在我的结果Json中删除符号“[”和“]”，所以我希望我的结果JSON成为：

{"RESULT":"2","TKN":"E952B4C5FA9","URL_HOME":"My_Url_Home"}

这是我的代码：

    [WebMethod]
    [ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
    public void Create_JSON()
    {
        SqlConnection con = new SqlConnection(consString);
        SqlCommand cmd = new SqlCommand();

        DataTable dt;
        SqlDataReader reader;

        HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*");

        if (HttpContext.Current.Request.HttpMethod == "OPTIONS")
        {
            //These headers are handling the "pre-flight" OPTIONS call sent by the browser
            HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE");
            HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Accept");
            HttpContext.Current.Response.AddHeader("Access-Control-Max-Age", "1728000");
            HttpContext.Current.Response.End();
        }
        String resultJSON = "";
        JavaScriptSerializer js = new JavaScriptSerializer();
        try
        {
            Context.Response.Clear();
            Context.Response.ContentType = "application/json";

            cmd.CommandType = CommandType.StoredProcedure;
            cmd.CommandText = "My_Store_Procedure";
            cmd.Connection = con;

            con.Open();
            reader = cmd.ExecuteReader();
            dt = new DataTable();
            dt.Load(reader);
            con.Close();


            JavaScriptSerializer serializer = new JavaScriptSerializer();
            List<Dictionary<String, Object>> tableRows = new List<Dictionary<string, object>>();
            Dictionary<String, Object> row;

            foreach (DataRow dr in dt.Rows)
            {
                row = new Dictionary<string, object>();
                foreach (DataColumn col in dt.Columns)
                {
                    row.Add(col.ColumnName, dr[col].ToString());
                }
                tableRows.Add(row);
            }
            resultJSON = serializer.Serialize(tableRows).ToString();

        }
        catch (Exception ex)
        {
            resultJSON = ex.Message.ToString();
        }
        Context.Response.Write(resultJSON);
    }

请帮助，并感谢所有答案。

Answer 1

应该这样吗？

resultJSON = serializer.Serialize(tableRows[0]).ToString();

问题是你的tableRows类型是List，但你希望它是一个对象。

Answer 2

我不知道你为什么要删除“[”和“]”，因为[]是JSON所必需的。
如果你必须删除[]，那么试试这个

resultJSON = serializer.Serialize(tableRows).ToString();
resultJSON = resultJSON.Substring(1, resultJSON.Length - 2);

在Web服务C＃中创建JSON对象

2 个答案: