SAP Java Connector - Excample 1: Simple RFC call

最新推荐文章于 2024-11-21 23:38:08 发布

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最新推荐文章于 2024-11-21 23:38:08 发布

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文章标签： Java Web

本文介绍如何使用SAP Java Connector调用简单的RFC功能模块ZNAS_HIE1_GET_MEMBER_FARM，该模块根据农场编号返回拥有过该农场的成员列表。通过示例代码展示了连接SAP系统、设置输入参数、执行RFC调用并处理返回结果的过程。

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SAP Java Connector - Excample 1: Simple RFC call

Scenario

We will call the RFC function module ZNAS_HIE1_GET_MEMBER_FARM.that returns members that have owned a farm. Input to the function is a farm number, and output is a table of members that have owned the farm and Owner number (Sequence number of owners).

Class testJCO is excuted and calls class GetMemberFarm method GetMemberFarmFromSap. Input parameters to GetMemberFarm are Farm and Owner number.
GetMemberFarmFromSap executes RFC ZNAS_HIE1_GET_MEMBER_FARM, that returns a table of members that have owned the farm from the input parameters.
GetMemberFarmFromSap loops through the table and finds the member where ZZCHCODE (Owner numer), is equal owner number from the input-parameters. and returns the member.

Code

Class testJCO

 testJco
{   
         main(String[] args)
        {   
                GetMemberFarm testGetMemberFarm = new GetMemberFarm();
                String memberFarm= testGetMemberFarm.GetMemberFarmFromSap("0111020155","02");
                System.out.println("Memberfarm: " + memberFarm);
        }

}

Class GetMemberFram

 com.sap.mw.jco.*;  //The JCO
 


 GetMemberFarm {
        
 String GetMemberFarmFromSap(String farm, String OwnerNumber)    
  {  String zzmemb ="";
         String memberFarm = "";
     JCO.Repository mRepository;
     JCO.Client mConnection = null;
     JCO.Function myFunction = null;
          try
          { 
                mConnection = JCO.createClient("800",           //SAP client
                                           "HFR",       //User ID
                                           "vimmer3",     //Password
                                           "EN",            //Language
                                           "53.205.22.71", //Host
                                           "03");           //System
        
        
            mConnection.connect();
            System.out.println("Connection OK");
          }
          catch (Exception ex)
          {     
                System.out.println(ex);
          }

      try
          {
        //Create repository
        mRepository = new JCO.Repository( "GetMember", mConnection );
        
        //Get a function template from the repository
        IFunctionTemplate ftemplate = mRepository.getFunctionTemplate("ZNAS_HIE1_GET_MEMBER_FARM");
        
        //Create function
        myFunction = new JCO.Function(ftemplate);
        System.out.println("Function created");
        
        //Set import parameter
        JCO.Field zzfarm = myFunction.getImportParameterList().getField("ZZFARM");
        zzfarm.setValue(farm);
       
        
        System.out.println("Parameters ok");
        
        
          } 
     catch (Exception ex)          
         {               
        System.out.println(ex);
         }
     try
         { 
        mConnection.execute(myFunction);
        System.out.println("RFC Call OK");            
         }
     
     catch (Exception ex)         
         {  System.out.println(ex); //Exception from function            
        
         }      
     

     JCO.Table gt_HIERARCHY = null;
     try
         {  
        gt_HIERARCHY=myFunction.getTableParameterList().getTable("GT_HIERARCHY");
        
        //Loop thhrough table and return the member that has
        // changecode (ZZCHCODE) = 02
        for (int i = 0; i < gt_HIERARCHY.getNumRows(); i++)
        {   gt_HIERARCHY.setRow(i);
            String zzchcode = gt_HIERARCHY.getString("ZZCHCODE");
            if (zzchcode.equals(OwnerNumber))                           
            {
                zzmemb = gt_HIERARCHY.getString("ZZMEMB");                    
            }   
                
        }
        
         }
     
     catch (Exception ex)         
         {  System.out.println(ex);              
        
         }      
     
     
     
     try
           {
            mConnection.disconnect();   
            System.out.println("Disconnected from SAP");
           }
      catch (Exception ex)
          { 
        System.out.println(ex);
          }  
          
      return zzmemb;
  }  
        
} //public class GetMemberFarm

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