插入多個json字符串時出錯

Question

這段代碼可以工作，但它只能插入一個json字符串到sql db。如果json字符串是多個，它將​​只插入一個json字符串，並且出現此錯誤

usp_insert_schedule指定的參數太多。

有人可以給我鏈接教程或指導我至少。

using Newtonsoft.Json; 

//Object Root 
public class jObt 
{ 
    public string empid { get; set; } 
    public string status { get; set; } 
} 

private void insrt_jString() 
{ 
    iScedule isc = new iScedule(); 

    //sql stored proc 
    String Query = iSQL.STORED_PROCEDURE_SCH_ADD; 

    //sql class for insert 
    iEmp usr = new iEmp(Query); 

    string barc = txtBarCode.Text.Trim(' '); 
    string ddate = isc.get_date(); 

    //http://get w/ barc & ddate as param 
    string input = isc.jValue(barc, ddate); 
    string input = @"{""empid"":""B14"",""status""}{""empid"":""B15"",""status"":""Morning""}"; 

    var output = input.Split(new[] { '{', '}' }, StringSplitOptions.RemoveEmptyEntries) 
      .Select(x => "{" + x + "}") 
      .ToList(); 

    foreach (var json in output) 
    { 
     jObt ob = JsonConvert.DeserializeObject<jObt>(json); 
     usr.Insert_Schedule(ob.empid, ob.status); 
    } 
} 

//Class for Insert_Schedule 
public class iEmp: iCon 
{ 
    public string Query; 
    public string ComString { get; protected set; } 
    public iEmp(string ComS): base(ComS) 
    { 
     this.Query = ComS; 
     Comm.Parameters.Clear(); 
     Comm.CommandType = CommandType.StoredProcedure; 
     Comm.CommandText = this.ComString; 
     Comm.Connection = Conn; 
    } 

    //SCHEDULE 
    public void Insert_Schedule(string empid, string status) 
    { 
     Comm.Parameters.AddWithValue("@empid", empid); 
     Comm.Parameters.AddWithValue("@status", status); 
     Comm.ExecuteNonQuery(); 
    } 
} 

存儲過程根據您的循環低於

foreach (var json in output) 
{ 
    jObt ob = JsonConvert.DeserializeObject<jObt>(json); 
    usr.Insert_Schedule(ob.empid, ob.status); 
} 

你調用usr.Insert_Schedule方法不止一次如果JSON包含多個對象

CREATE PROC [dbo].[usp_insert_schedule] 
@empid [varchar](32), 
@status [varchar](20) 
AS 
INSERT INTO Schedule(Ctrl_ID, Status) 
    VALUES (@empid, @status) 

Answer 1

。現在讓我們來看看usr.Insert_Schedule方法的定義如下

public void Insert_Schedule(string empid, string status) 
{ 
    Comm.Parameters.AddWithValue("@empid", empid); 
    Comm.Parameters.AddWithValue("@status", status); 
    Comm.ExecuteNonQuery(); 
} 

當你調用usr.Insert_Schedule第二次，你不清除的Comm的Parameters財產。相反，你再次添加相同的參數（@empid和@status），這就是爲什麼你得到了usp_insert_schedule has too many arguments specified錯誤。你需要指定類似下面

public void Insert_Schedule(string empid, string status) 
{ 
    // clear the parameters 
    Comm.Parameters.Clear(); 

    Comm.Parameters.AddWithValue("@empid", empid); 
    Comm.Parameters.AddWithValue("@status", status); 
    Comm.ExecuteNonQuery(); 
}