WCF Rest Service将Json对象列表作为参数

Question

I am trying to insert a list of holidays into a Holiday Table inside my Oracle 12c DB using WCF Rest services. When I am running my service, I am not getting an error, but the data is not being inserted when I run the service. I believe there is an issue with my cmdStr and UpdateHoliday() . Any help is appreciated much. Thanks.

IService1.cs

public interface IService1
{
    [OperationContract()]
    [WebInvoke(UriTemplate = "UpdateHoliday", ResponseFormat = WebMessageFormat.Json, Method = "POST")]
    void UpdateHoliday(List<Holiday> Holidays);
}


[DataContract]
public class Holiday
{
    [DataMember(Order = 0)]
    public string HOLIDAY { get; set; }

    [DataMember(Order = 1)]
    public string DESCRIPTION { get; set; }

    public List<Holiday> Holidays { get; set; }
}

public class ListofHoliday
{
    [DataMember]
    List<Holiday> Holidays { get; set; }
}

Service1.cs

    public class Service1 : IService1
{
    public void UpdateHoliday(List<Holiday> Holidays)
    {
        List<ListofHoliday> firstStringList = new List<ListofHoliday>();
        string cmdStr = String.Format("INSERT INTO HOLIDAY (HOLIDAY, Description)" +
                                   " VALUES('HOLIDAY','Description')");

        foreach (var item in firstStringList)
        {
            (new DbHelper()).SqlExecute(cmdStr);
        }
    }


}

DbHelper.cs

 class DbHelper
    {
        private static string ConnectionString
        {
            get
            {
                return System.Configuration.ConfigurationManager.ConnectionStrings["cn"].ConnectionString;
            }
        }

        public DataTable GetResultSet(string sql)
        {
            DataTable dt = new DataTable();
            using (OracleDataAdapter da = new OracleDataAdapter(sql, ConnectionString))
            {
                da.Fill(dt);
            }
            return dt;
        }

        public void SqlExecute(string sql)
        {
            using (OracleCommand cmd = new OracleCommand(sql, new OracleConnection(ConnectionString)))
            {
                cmd.Connection.Open();
                cmd.ExecuteNonQuery();
                cmd.Connection.Close();
            }
        }

    }

I finally was able to found a way to make it work. The changes are below: Service1.cs

public class Service1 : IService1
{
    public void UpdateHoliday(List<Holiday> Holidays)
    {
        if (Holidays == null)
            throw new ArgumentNullException("Holidays");

        foreach (var item in Holidays)
        {
            StringBuilder sb = new StringBuilder();
            sb.Append("INSERT INTO HOLIDAY (HOLIDAY, DESCRIPTION) VALUES ");
            sb.AppendFormat("( '{0}', '{1}')",
                item.HOLIDAY, item.DESCRIPTION);
            //sb.AppendFormat(";");
            (new DbHelper()).SqlExecute(sb.ToString());
        }
    }


}

Answer 1

Howa about trying out this code in your service operation. If the code below works then you still have some work to do in order to get your DBHelper to accept a command with parameters.

public class Service1 : IService1
{
    public void UpdateHoliday(List<Holiday> Holidays)
    {
        if(Holidays==null)
           throw new ArgumentNullException("Holidays");

        string cmdStr = String.Format("INSERT INTO HOLIDAY (HOLIDAY, Description)" +
                                   " VALUES('HOLIDAY','Description')");

        foreach (var item in Holidays)
        {
            (new DbHelper()).SqlExecute(cmdStr);
        }
    }


}