[WebMethod]
    //写入数据
    public string Insert(string json)
    {
        //解析json
        aaData data = json.FromJson<aaData>();
        string result = string.Empty;
        //根据json的tablename 判断要写入哪张表
        switch (data.TableName)
        {
            case "Tab_Operation":
                result = Function.Insert(data.Json.FromJson<TabOperation>());
                break;
            case "Tab_Inspect":
                result = Function.Insert(data.Json.FromJson<TabInspect>());
                break;
            case "Tab_Complete":
                result = Function.Insert(data.Json.FromJson<TabComplete>());
                break;
            default:
                break;
        }
        return result;
    }