我正在尝试使用SSIS从CMS Open Payment网站导入Web API。从CMS网站提取数据后，我想将其导入到我的SQL Prod环境中。但是，我遇到了两个问题。
这是我添加到BufferWrapper类中的代码示例，以消除字段错误
internal string Change_Type;
脚本代码
#region Namespaces
using System;
using System.Data;
using Microsoft.SqlServer.Dts.Pipeline.Wrapper;
using Microsoft.SqlServer.Dts.Runtime.Wrapper;
using System.Net;
using Microsoft.SqlServer.Dts.Runtime;
using System.Windows.Forms;
using System.IO;
using System.Web.Script.Serialization;
#endregion
#region Class
[Microsoft.SqlServer.Dts.Pipeline.SSISScriptComponentEntryPointAttribute]
public class ScriptMain : UserComponent
{
public override void CreateNewOutputRows()
{
//Set Webservice URL
string wUrl = "https://openpaymentsdata.cms.gov/resource/bqf5-h6wd.json";
try
{
//Call getWebServiceResult to return our WorkGroupMetric array
WorkGroupMetric[] outPutMetrics = GetWebServiceResult(wUrl);
//For each group of metrics output records
foreach (var metric in outPutMetrics)
{
Output0Buffer.AddRow();
Output0Buffer.Change_Type = metric.CT;
Output0Buffer.Covered_Recipient_Type = metric.CRT;
Output0Buffer.Teaching_Hospital_CCN = metric.THC;
Output0Buffer.Teaching_Hospital_ID = metric.THI;
Output0Buffer.Teaching_Hospital_Name = metric.THN;
Output0Buffer.Physician_Profile_ID = metric.PPI;
Output0Buffer.Physician_First_Name = metric.PFN;
Output0Buffer.Physician_Middle_Name = metric.PMN;
Output0Buffer.Physician_Last_Name = metric.PLN;
Output0Buffer.Physician_Name_Suffix = metric.PNS;
Output0Buffer.Recipient_Primary_Business_Street_Address_Line1 = metric.RPB1;
Output0Buffer.Recipient_Primary_Business_Street_Address_Line2 = metric.RPB2;
Output0Buffer.Recipient_City = metric.RC;
Output0Buffer.Recipient_State = metric.RS;
Output0Buffer.Recipient_Zip_Code = metric.RZC;
Output0Buffer.Recipient_Country = metric.RCO;
Output0Buffer.Recipient_Province = metric.RP;
Output0Buffer.Recipient_Postal_Code = metric.RPC;
Output0Buffer.Physician_Primary_Type = metric.PPT;
Output0Buffer.Physician_Specialty = metric.PS;
Output0Buffer.Physician_License_State_code1 = metric.PLS1;
Output0Buffer.Physician_License_State_code2 = metric.PLS2;
Output0Buffer.Physician_License_State_code3 = metric.PLS3;
Output0Buffer.Physician_License_State_code4 = metric.PLS4;
Output0Buffer.Physician_License_State_code5 = metric.PLS5;
Output0Buffer.Submitting_Applicable_Manufacturer_or_Applicable_GPO_Name = metric.SAM;
Output0Buffer.Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_ID = metric.AMOI;
Output0Buffer.Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_Name = metric.AMON;
Output0Buffer.Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_State = metric.AMOS;
Output0Buffer.Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_Country = metric.AMOC;
Output0Buffer.Total_Amount_of_Payment_USDollars = metric.TAO;
Output0Buffer.Date_of_Payment = metric.DOP;
Output0Buffer.Number_of_Payments_Included_in_Total_Amount = metric.NOA;
Output0Buffer.Form_of_Payment_or_Transfer_of_Value = metric.FOP;
Output0Buffer.Nature_of_Payment_or_Transfer_of_Value = metric.NOP;
Output0Buffer.City_of_Travel = metric.COT;
Output0Buffer.State_of_Travel = metric.SOT;
Output0Buffer.Country_of_Travel = metric.COOT;
Output0Buffer.Physician_Ownership_Indicator = metric.POI;
Output0Buffer.Third_Party_Payment_Recipient_Indicator = metric.TPP;
Output0Buffer.Name_of_Third_Party_Entity_Receiving_Payment_or_Transfer_of_Value = metric.NOT;
Output0Buffer.Charity_Indicator = metric.CHI;
Output0Buffer.Third_Party_Equals_Covered_Recipient_Indicator = metric.TPE;
Output0Buffer.Contextual_Information = metric.CI;
Output0Buffer.Delay_in_Publication_Indicator = metric.DIP;
Output0Buffer.Record_ID = metric.RI;
Output0Buffer.Dispute_Status_for_Publication = metric.DSF;
Output0Buffer.Related_Product_Indicator = metric.RPI;
Output0Buffer.Covered_or_Noncovered_Indicator_1 = metric.CON1;
Output0Buffer.Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_1 = metric.IDO1;
Output0Buffer.Product_Category_or_Therapeutic_Area_1 = metric.PCO1;
Output0Buffer.Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_1 = metric.NOD1;
Output0Buffer.Associated_Drug_or_Biological_NDC_1 = metric.ADO1;
Output0Buffer.Covered_or_Noncovered_Indicator_2 = metric.CON2;
Output0Buffer.Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_2 = metric.IDO2;
Output0Buffer.Product_Category_or_Therapeutic_Area_2 = metric.PCO2;
Output0Buffer.Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_2 = metric.NOD2;
Output0Buffer.Associated_Drug_or_Biological_NDC_2 = metric.ADO2;
Output0Buffer.Covered_or_Noncovered_Indicator_3 = metric.CON3;
Output0Buffer.Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_3 = metric.IDO3;
Output0Buffer.Product_Category_or_Therapeutic_Area_3 = metric.PCO3;
Output0Buffer.Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_3 = metric.NOD3;
Output0Buffer.Associated_Drug_or_Biological_NDC_3 = metric.ADO3;
Output0Buffer.Covered_or_Noncovered_Indicator_4 = metric.CON4;
Output0Buffer.Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_4 = metric.IDO4;
Output0Buffer.Product_Category_or_Therapeutic_Area_4 = metric.PCO4;
Output0Buffer.Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_4 = metric.NOD4;
Output0Buffer.Associated_Drug_or_Biological_NDC_4 = metric.ADO4;
Output0Buffer.Covered_or_Noncovered_Indicator_5 = metric.CON5;
Output0Buffer.Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_5 = metric.IDO5;
Output0Buffer.Product_Category_or_Therapeutic_Area_5 = metric.PCO5;
Output0Buffer.Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_5 = metric.NOD5;
Output0Buffer.Associated_Drug_or_Biological_NDC_5 = metric.ADO5;
Output0Buffer.Program_Year = metric.PY;
Output0Buffer.Payment_Publication_Date = metric.PPD;
}
}
catch (Exception e)
{
FailComponent(e.ToString());
}
}
/// <summary>
/// Method to return our WorkGroupMetric array
/// </summary>
/// <param name="wUrl">The web service URL to call</param>
/// <returns>An array of WorkGroupMetric composed of the de-serialized JSON</returns>
private WorkGroupMetric[] GetWebServiceResult(string wUrl)
{
ServicePointManager.Expect100Continue = true;
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
HttpWebRequest httpWReq = (HttpWebRequest)WebRequest.Create(wUrl);
HttpWebResponse httpWResp = (HttpWebResponse)httpWReq.GetResponse();
WorkGroupMetric[] jsonResponse = null;
try
{
//Test the connection
if (httpWResp.StatusCode == HttpStatusCode.OK)
{
Stream responseStream = httpWResp.GetResponseStream();
string jsonString = null;
//Set jsonString using a stream reader
using (StreamReader reader = new StreamReader(responseStream))
{
jsonString = reader.ReadToEnd().Replace("\\", "");
reader.Close();
}
//Deserialize our JSON
JavaScriptSerializer sr = new JavaScriptSerializer();
//JSON string comes in with a leading and trailing " that need to be removed for parsing to work correctly
//The JSON here is serialized weird, normally you would not need this trim
jsonResponse = sr.Deserialize<WorkGroupMetric[]>(jsonString.Trim('"'));
}
//Output connection error message
else
{
FailComponent(httpWResp.StatusCode.ToString());
}
}
//Output JSON parsing error
catch (Exception e)
{
FailComponent(e.ToString());
}
return jsonResponse;
}
/// <summary>
/// Outputs error message
/// </summary>
/// <param name="errorMsg">Full error text</param>
private void FailComponent(string errorMsg)
{
bool fail = false;
IDTSComponentMetaData100 compMetadata = this.ComponentMetaData;
compMetadata.FireError(1, "Error Getting Data From Webservice!", errorMsg, "", 0, out fail);
}
}
#endregion
#region JSON Class
//Class to hold our work group metrics
class WorkGroupMetric
{
private string Change_Type;
private string Covered_Recipient_Type;
private string Teaching_Hospital_CCN;
private string Teaching_Hospital_ID;
private string Teaching_Hospital_Name;
private string Physician_Profile_ID;
private string Physician_First_Name;
private string Physician_Middle_Name;
private string Physician_Last_Name;
private string Physician_Name_Suffix;
private string Recipient_Primary_Business_Street_Address_Line1;
private string Recipient_Primary_Business_Street_Address_Line2;
private string Recipient_City;
private string Recipient_State;
private string Recipient_Zip_Code;
private string Recipient_Country;
private string Recipient_Province;
private string Recipient_Postal_Code;
private string Physician_Primary_Type;
private string Physician_Specialty;
private string Physician_License_State_code1;
private string Physician_License_State_code2;
private string Physician_License_State_code3;
private string Physician_License_State_code4;
private string Physician_License_State_code5;
private string Submitting_Applicable_Manufacturer_or_Applicable_GPO_Name;
private string Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_ID;
private string Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_Name;
private string Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_State;
private string Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_Country;
private string Total_Amount_of_Payment_USDollars;
private string Date_of_Payment;
private string Number_of_Payments_Included_in_Total_Amount;
private string Form_of_Payment_or_Transfer_of_Value;
private string Nature_of_Payment_or_Transfer_of_Value;
private string City_of_Travel;
private string State_of_Travel;
private string Country_of_Travel;
private string Physician_Ownership_Indicator;
private string Third_Party_Payment_Recipient_Indicator;
private string Name_of_Third_Party_Entity_Receiving_Payment_or_Transfer_of_Value;
private string Charity_Indicator;
private string Third_Party_Equals_Covered_Recipient_Indicator;
private string Contextual_Information;
private string Delay_in_Publication_Indicator;
private string Record_ID;
private string Dispute_Status_for_Publication;
private string Related_Product_Indicator;
private string Covered_or_Noncovered_Indicator_1;
private string Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_1;
private string Product_Category_or_Therapeutic_Area_1;
private string Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_1;
private string Associated_Drug_or_Biological_NDC_1;
private string Covered_or_Noncovered_Indicator_2;
private string Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_2;
private string Product_Category_or_Therapeutic_Area_2;
private string Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_2;
private string Associated_Drug_or_Biological_NDC_2;
private string Covered_or_Noncovered_Indicator_3;
private string Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_3;
private string Product_Category_or_Therapeutic_Area_3;
private string Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_3;
private string Associated_Drug_or_Biological_NDC_3;
private string Covered_or_Noncovered_Indicator_4;
private string Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_4;
private string Product_Category_or_Therapeutic_Area_4;
private string Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_4;
private string Associated_Drug_or_Biological_NDC_4;
private string Covered_or_Noncovered_Indicator_5;
private string Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_5;
private string Product_Category_or_Therapeutic_Area_5;
private string Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_5;
private string Associated_Drug_or_Biological_NDC_5;
private string Program_Year;
private string Payment_Publication_Date;
public string CT
{
get { return Change_Type; }
set { Change_Type = value; }
}
public string CRT
{
get { return Covered_Recipient_Type; }
set { Covered_Recipient_Type = value; }
}
public string THC
{
get { return Teaching_Hospital_CCN; }
set { Teaching_Hospital_CCN = value; }
}
public string THI
{
get { return Teaching_Hospital_ID; }
set { Teaching_Hospital_ID = value; }
}
public string THN
{
get { return Teaching_Hospital_Name; }
set { Teaching_Hospital_Name = value; }
}
public string PPI
{
get { return Physician_Profile_ID; }
set { Physician_Profile_ID = value; }
}
public string PFN
{
get { return Physician_First_Name; }
set { Physician_First_Name = value; }
}
public string PMN
{
get { return Physician_Middle_Name; }
set { Physician_Middle_Name = value; }
}
public string PLN
{
get { return Physician_Last_Name; }
set { Physician_Last_Name = value; }
}
public string PNS
{
get { return Physician_Name_Suffix; }
set { Physician_Name_Suffix = value; }
}
public string RPB1
{
get { return Recipient_Primary_Business_Street_Address_Line1; }
set { Recipient_Primary_Business_Street_Address_Line1 = value; }
}
public string RPB2
{
get { return Recipient_Primary_Business_Street_Address_Line2; }
set { Recipient_Primary_Business_Street_Address_Line2 = value; }
}
public string RC
{
get { return Recipient_City; }
set { Recipient_City = value; }
}
public string RS
{
get { return Recipient_State; }
set { Recipient_State = value; }
}
public string RZC
{
get { return Recipient_Zip_Code; }
set { Recipient_Zip_Code = value; }
}
public string RCO
{
get { return Recipient_Country; }
set { Recipient_Country = value; }
}
public string RP
{
get { return Recipient_Province; }
set { Recipient_Province = value; }
}
public string RPC
{
get { return Recipient_Postal_Code; }
set { Recipient_Postal_Code = value; }
}
public string PPT
{
get { return Physician_Primary_Type; }
set { Physician_Primary_Type = value; }
}
public string PS
{
get { return Physician_Specialty; }
set { Physician_Specialty = value; }
}
public string PLS1
{
get { return Physician_License_State_code1; }
set { Physician_License_State_code1 = value; }
}
public string PLS2
{
get { return Physician_License_State_code2; }
set { Physician_License_State_code2 = value; }
}
public string PLS3
{
get { return Physician_License_State_code3; }
set { Physician_License_State_code3 = value; }
}
public string PLS4
{
get { return Physician_License_State_code4; }
set { Physician_License_State_code4 = value; }
}
public string PLS5
{
get { return Physician_License_State_code5; }
set { Physician_License_State_code5 = value; }
}
public string SAM
{
get { return Submitting_Applicable_Manufacturer_or_Applicable_GPO_Name; }
set { Submitting_Applicable_Manufacturer_or_Applicable_GPO_Name = value; }
}
public string AMOI
{
get { return Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_ID; }
set { Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_ID = value; }
}
public string AMON
{
get { return Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_Name; }
set { Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_Name = value; }
}
public string AMOS
{
get { return Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_State; }
set { Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_State = value; }
}
public string AMOC
{
get { return Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_Country; }
set { Applicable_Manufacturer_or_Applicable_GPO_Making_Payment_Country = value; }
}
public string TAO
{
get { return Total_Amount_of_Payment_USDollars; }
set { Total_Amount_of_Payment_USDollars = value; }
}
public string DOP
{
get { return Date_of_Payment; }
set { Date_of_Payment = value; }
}
public string NOA
{
get { return Number_of_Payments_Included_in_Total_Amount; }
set { Number_of_Payments_Included_in_Total_Amount = value; }
}
public string FOP
{
get { return Form_of_Payment_or_Transfer_of_Value; }
set { Form_of_Payment_or_Transfer_of_Value = value; }
}
public string NOP
{
get { return Nature_of_Payment_or_Transfer_of_Value; }
set { Nature_of_Payment_or_Transfer_of_Value = value; }
}
public string COT
{
get { return City_of_Travel; }
set { City_of_Travel = value; }
}
public string SOT
{
get { return State_of_Travel; }
set { State_of_Travel = value; }
}
public string COOT
{
get { return Country_of_Travel; }
set { Country_of_Travel = value; }
}
public string POI
{
get { return Physician_Ownership_Indicator; }
set { Physician_Ownership_Indicator = value; }
}
public string TPP
{
get { return Third_Party_Payment_Recipient_Indicator; }
set { Third_Party_Payment_Recipient_Indicator = value; }
}
public string NOT
{
get { return Name_of_Third_Party_Entity_Receiving_Payment_or_Transfer_of_Value; }
set { Name_of_Third_Party_Entity_Receiving_Payment_or_Transfer_of_Value = value; }
}
public string CHI
{
get { return Charity_Indicator; }
set { Charity_Indicator = value; }
}
public string TPE
{
get { return Third_Party_Equals_Covered_Recipient_Indicator; }
set { Third_Party_Equals_Covered_Recipient_Indicator = value; }
}
public string CI
{
get { return Contextual_Information; }
set { Contextual_Information = value; }
}
public string DIP
{
get { return Delay_in_Publication_Indicator; }
set { Delay_in_Publication_Indicator = value; }
}
public string RI
{
get { return Record_ID; }
set { Record_ID = value; }
}
public string DSF
{
get { return Dispute_Status_for_Publication; }
set { Dispute_Status_for_Publication = value; }
}
public string RPI
{
get { return Related_Product_Indicator; }
set { Related_Product_Indicator = value; }
}
public string CON1
{
get { return Covered_or_Noncovered_Indicator_1; }
set { Covered_or_Noncovered_Indicator_1 = value; }
}
public string IDO1
{
get { return Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_1; }
set { Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_1 = value; }
}
public string PCO1
{
get { return Product_Category_or_Therapeutic_Area_1; }
set { Product_Category_or_Therapeutic_Area_1 = value; }
}
public string NOD1
{
get { return Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_1; }
set { Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_1 = value; }
}
public string ADO1
{
get { return Associated_Drug_or_Biological_NDC_1; }
set { Associated_Drug_or_Biological_NDC_1 = value; }
}
public string CON2
{
get { return Covered_or_Noncovered_Indicator_2; }
set { Covered_or_Noncovered_Indicator_2 = value; }
}
public string IDO2
{
get { return Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_2; }
set { Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_2 = value; }
}
public string PCO2
{
get { return Product_Category_or_Therapeutic_Area_2; }
set { Product_Category_or_Therapeutic_Area_2 = value; }
}
public string NOD2
{
get { return Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_2; }
set { Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_2 = value; }
}
public string ADO2
{
get { return Associated_Drug_or_Biological_NDC_2; }
set { Associated_Drug_or_Biological_NDC_2 = value; }
}
public string CON3
{
get { return Covered_or_Noncovered_Indicator_3; }
set { Covered_or_Noncovered_Indicator_3 = value; }
}
public string IDO3
{
get { return Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_3; }
set { Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_3 = value; }
}
public string PCO3
{
get { return Product_Category_or_Therapeutic_Area_3; }
set { Product_Category_or_Therapeutic_Area_3 = value; }
}
public string NOD3
{
get { return Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_3; }
set { Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_3 = value; }
}
public string ADO3
{
get { return Associated_Drug_or_Biological_NDC_3; }
set { Associated_Drug_or_Biological_NDC_3 = value; }
}
public string CON4
{
get { return Covered_or_Noncovered_Indicator_4; }
set { Covered_or_Noncovered_Indicator_4 = value; }
}
public string IDO4
{
get { return Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_4; }
set { Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_4 = value; }
}
public string PCO4
{
get { return Product_Category_or_Therapeutic_Area_4; }
set { Product_Category_or_Therapeutic_Area_4 = value; }
}
public string NOD4
{
get { return Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_4; }
set { Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_4 = value; }
}
public string ADO4
{
get { return Associated_Drug_or_Biological_NDC_4; }
set { Associated_Drug_or_Biological_NDC_4 = value; }
}
public string CON5
{
get { return Covered_or_Noncovered_Indicator_5; }
set { Covered_or_Noncovered_Indicator_5 = value; }
}
public string IDO5
{
get { return Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_5; }
set { Indicate_Drug_or_Biological_or_Device_or_Medical_Supply_5 = value; }
}
public string PCO5
{
get { return Product_Category_or_Therapeutic_Area_5; }
set { Product_Category_or_Therapeutic_Area_5 = value; }
}
public string NOD5
{
get { return Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_5; }
set { Name_of_Drug_or_Biological_or_Device_or_Medical_Supply_5 = value; }
}
public string ADO5
{
get { return Associated_Drug_or_Biological_NDC_5; }
set { Associated_Drug_or_Biological_NDC_5 = value; }
}
public string PY
{
get { return Program_Year; }
set { Program_Year = value; }
}
public string PPD
{
get { return Payment_Publication_Date; }
set { Payment_Publication_Date = value; }
}
}
#endregion
答案 0 :(得分：0)
好的，我可以解决这个问题，并希望与您一起完成一些工作。
首先为什么收到错误消息“属性或索引器“ Output0Buffer.ChangeType”无法分配给它-只读”。收到此消息的原因是，您将输出0缓冲区上的每个属性都设置为“文本流[DT_TEXT]”。这是Blob数据类型，与SQL Server中的varchar（max）或Text等效，不能简单地使用“ =”进行分配。为了在代码中执行此操作，您必须执行以下操作（例如Change_Type的示例）：
if (py.change_type != null)
{
Output0Buffer.ChangeType.AddBlobData(Encoding.ASCII.GetBytes(py.change_type));
}
else
{
Output0Buffer.ChangeType.SetNull();
}
您应该注意编码。我默认将其设置为ASCII，但是如果您打算在其中查看国际字符，则应将其更改为Unicode。
第二，最好只是对所有内容进行varchar（max），然后为每个属性分配其真实的数据类型和长度，这不是一个好习惯。对于字符串，对Unicode数据使用“ string [DT_STR]”或“ Unicode string [DT_WSTR]”。如果将这些数据发送到SQL Server，则目标数据类型应分别为varchar或nvarchar。我将change_type作为文本保留在代码中，以供您参考，以防万一其中任何一个确实包含大于8000个字符的文本。我找不到此JSON的元数据，因此我对每个字段的数据类型做出了最好的猜测。这将按照我在博客中的分配方式分配：
Output0Buffer.CoveredRecipientType = py.covered_recipient_type;
第三，我将2个日期字段date_of_payment和payment_publication_date从字符串更改为“数据库时间戳[DT_DBTIMESTAMP]”，以供参考。这将等效于SQL Server中的日期时间数据类型。您可以随时将其更改回字符串：
Output0Buffer.PaymentPublicationDate = DateTime.Parse(py.payment_publication_date);
我使用DataContracts完成了反序列化，但是您可以使用任何适合您的方法。这只是供您参考，以构建您的SSIS包。