C# .NET 如何调用 SAP RFC 接口

news2024/9/20 12:41:32

1.分析传参结构
SAP 传参格式对应 .NET 参数格式

SAP 参数	.NET 参数	参数类型
import(导入)——关联类型为数据元素	Param	单个变量参数
import(导出)——关联类型为结构体	Struct	结构体
table	Table	表

下面是 SAP 对应参数类型：
在这里插入图片描述

2.web.config 配置
配置文件需要客户端名和连接地址和账户密码

  <appSettings>
    <add key="SAPINSName" value="OND"/>    //客户端名字
  </appSettings>
 <SAP.Middleware.Connector>
    <ClientSettings>
      <DestinationConfiguration>
        <destinations>
         <add NAME="OND" USER="" PASSWD="******" CLIENT="300" LANG="ZH" ASHOST="10.10.xx.xx" SYSNR="00" MAX_POOL_SIZE="10" IDLE_TIMEOUT="10"/>
        </destinations>
      </DestinationConfiguration>
    </ClientSettings>
  </SAP.Middleware.Connector>

3.调用示例：
调用 SAP 接口类型为输入输出表的接口：

var SAP = ConfigHelper.AppSettings("SAPINSName");
Test.SapDBBase.SAPBaseDAL sd = new Test.SapDBBase.SAPBaseDAL(SAP); //基本设置
DataTable tb = new DataTable();
tb.Columns.Add("WERKS");
tb.Columns.Add("MATNR");
DataRow rowsap = tb.NewRow();
rowsap["WERKS"] = WERK;
rowsap["MATNR"] = PN;
tb.Rows.Add(rowsap);
try
{
	//调用 SAP RFC 接口，传参是表结构，返回表数据和结构体
    DataTable returntd = sd.WriteDataTable("ZFM_EXPORT", "IT_IN", tb, "IT_OUT");
}
catch (Exception e)
{
    Type = "E";
    Msg = e.Message;
}

4.调用方法部分代码

调用准备

using System;
using System.Collections;
using System.Data;
using System.Linq;
using ONET.ServerCommLib;
using SAP.Middleware.Connector;

		public SAPBaseDAL(string SapConfigNodeName = "")
		{
			if (!string.IsNullOrEmpty(SapConfigNodeName))
			{
				SapRFCBase.SapConfigNodeName = SapConfigNodeName;
			}
		}


try
{
	RfcDestination rfcDestination = SapRFCBase.RegisterDestination();
	RfcRepository repository = rfcDestination.Repository;
	IRfcFunction rfcFunction = repository.CreateFunction(functionName);
	...//不同入参类型
	rfcFunction.Invoke(rfcDestination);
	...//不同出参类型
}
catch (Exception ex)
{
	this.writeExceptionLog(functionName, ex);
}

出入参构造

//入参结构体
rfcFunction = this.GetIRfcStructeFromDataTable(rfcFunction, writeSapStructName, writeStructTable);
//入参表
rfcFunction = this.GetIRfcTableFromDataTable(rfcFunction, writeSapTableName, writeTable);
rfcFunction = writeDataSet.Tables.Cast<DataTable>().Aggregate(rfcFunction, (IRfcFunction current, DataTable table) => this.GetIRfcTableFromDataTable(current, table.TableName, table));//多表
//入参单个变量
                if (htParam != null && htParam.Count > 0)
                {
                    foreach (object obj in htParam.Keys)
                    {
                        string text = (string)obj;
                        rfcFunction.SetValue(text, htParam[text].ToString());
                    }
                }
//出参结构
方式1：
				if (!string.IsNullOrEmpty(returnStructName))
				{
					IRfcStructure structure = rfcFunction.GetStructure(returnStructName);
					return new SAPRetStruct
					{
						Type = structure.GetString("TYPE"),
						Msg = structure.GetString("MESSAGE")
					};
				}
				return default(SAPRetStruct);
方式2：
                //ref Hashtable hstb 返回hashtable
				IRfcStructure structure = rfcFunction.GetStructure(returnStructName);
				if (hstb != null && hstb.Count > 0)
				{
					ArrayList arrayList = new ArrayList(hstb.Keys);
					for (int i = 0; i < arrayList.Count; i++)
					{
						hstb[arrayList[i]] = structure.GetString(arrayList[i].ToString());
					}
				}
//出参单个变量参数  
                Hashtable hashtable = new Hashtable();
                if (outParam != null && outParam.Count > 0)
                {
                    foreach (object obj2 in outParam.Keys)
                    {
                        string text2 = (string)obj2;
                        hashtable.Add(text2, rfcFunction.GetString(text2));
                    }
                    if (hashtable.Count > 0)
                    {
                        outParam.Clear();
                        foreach (object obj3 in hashtable.Keys)
                        {
                            string text2 = (string)obj3;
                            outParam.Add(text2, hashtable[text2]);
                        }
                    }
                }    
//出参表
				IRfcTable table = rfcFunction.GetTable(returnTableName);//出参表名
				dtOut = this.GetDataTableFromRFCTable(table); //返回的表

实例1：入参：变量+表出参：变量+结构体

public SAPRetStruct WriteParamAndTableToSapReturnParamAndRetStruct(string functionName, Hashtable htParam, string writeSapTableName, DataTable writeTable, ref Hashtable outParam, string returnStructName)
		{
			try
			{
				RfcDestination rfcDestination = SapRFCBase.RegisterDestination();
				RfcRepository repository = rfcDestination.Repository;
				IRfcFunction rfcFunction = repository.CreateFunction(functionName);
				rfcFunction = this.GetIRfcTableFromDataTable(rfcFunction, writeSapTableName, writeTable);
				if (htParam != null && htParam.Count > 0)
				{
					foreach (object obj in htParam.Keys)
					{
						string text = (string)obj;
						rfcFunction.SetValue(text, htParam[text].ToString());
					}
				}
				rfcFunction.Invoke(rfcDestination);
				Hashtable hashtable = new Hashtable();
				if (outParam != null && outParam.Count > 0)
				{
					foreach (object obj2 in outParam.Keys)
					{
						string text2 = (string)obj2;
						hashtable.Add(text2, rfcFunction.GetString(text2));
					}
					if (hashtable.Count > 0)
					{
						outParam.Clear();
						foreach (object obj3 in hashtable.Keys)
						{
							string text2 = (string)obj3;
							outParam.Add(text2, hashtable[text2]);
						}
					}
				}
				IRfcStructure structure = rfcFunction.GetStructure(returnStructName);
				return new SAPRetStruct
				{
					Type = structure.GetString("TYPE"),
					Msg = structure.GetString("MESSAGE")
				};
			}
			catch (Exception ex)
			{
				this.writeExceptionLog(functionName, ex);
			}
			return default(SAPRetStruct);
		}

实例2：入参：多个表出参：变量+结构体

		public SAPRetStruct WriteTablesToSapReturnParamAndRetStruct(string functionName, DataSet writeDataSet, ref Hashtable outParam, string returnStructName)
		{
			try
			{
				RfcDestination rfcDestination = SapRFCBase.RegisterDestination();
				RfcRepository repository = rfcDestination.Repository;
				IRfcFunction rfcFunction = repository.CreateFunction(functionName);
				rfcFunction = writeDataSet.Tables.Cast<DataTable>().Aggregate(rfcFunction, (IRfcFunction current, DataTable table) => this.GetIRfcTableFromDataTable(current, table.TableName, table));
				rfcFunction.Invoke(rfcDestination);
				Hashtable hashtable = new Hashtable();
				if (outParam != null && outParam.Count > 0)
				{
					foreach (object obj in outParam.Keys)
					{
						string text = (string)obj;
						hashtable.Add(text, rfcFunction.GetString(text));
					}
					if (hashtable.Count > 0)
					{
						outParam.Clear();
						foreach (object obj2 in hashtable.Keys)
						{
							string text = (string)obj2;
							outParam.Add(text, hashtable[text]);
						}
					}
				}
				IRfcStructure structure = rfcFunction.GetStructure(returnStructName);
				return new SAPRetStruct
				{
					Type = structure.GetString("TYPE"),
					Msg = structure.GetString("MESSAGE")
				};
			}
			catch (Exception ex)
			{
				this.writeExceptionLog(functionName, ex);
			}
			return default(SAPRetStruct);
		}

实例3：入参：变量出参：表

		public DataTable GetTable(string functionName, Hashtable htParam, string returnTableName)
		{
			try
			{
				RfcDestination rfcDestination = SapRFCBase.RegisterDestination();
				RfcRepository repository = rfcDestination.Repository;
				IRfcFunction rfcFunction = repository.CreateFunction(functionName);
				if (htParam != null && htParam.Count > 0)
				{
					foreach (object obj in htParam.Keys)
					{
						string text = (string)obj;
						rfcFunction.SetValue(text, htParam[text].ToString());
					}
				}
				rfcFunction.Invoke(rfcDestination);
				IRfcTable table = rfcFunction.GetTable(returnTableName);
				return this.GetDataTableFromRFCTable(table);
			}
			catch (Exception ex)
			{
				this.writeExceptionLog(functionName, ex);
			}
			return null;
		}