java - 为什么 SAP JCo 会引发错误 "Field ... not a member of ..."，即使该字段存在？

Question

我想从我的 Servlet 应用程序向 SAP RFC 表发送数据。

我正在尝试通过以下方式执行此操作。

JCO.Function function = null;
Connection conn = new Connection();
JCO.Client mConnection = conn.open();
JCO.Repository mRepository;
mConnection.connect();

mRepository = new JCO.Repository("KEYWORD",mConnection);

try{
    function = this.createFunction("MY RFC NAME");
    if(function != null){
         function.getImportParameterList.setValue("ID1","USERID");
         function.getImportParameterList.setValue("Test Name","UNAME");
         function.getImportParameterList.setValue("CLASSA","UCLASS");

         mConnection.execute(function);
    }
}catch(Exception ex){
    // Exception handling goes here.
}
conn.disconnected();

但是我得到以下错误

com.sap.mw.jco.JCO$Exception:<127> JCO_ERROR_FIELD_NOT_FOUND: Field USERID not a member of INPUT

但是我查了一下，SAP里面有exist列。

这里缺少什么？我还应该传递 RFC 表名吗？那怎么办？

Answer 1

我通过以下代码解决了这个问题。

JCO.Function function = null;
Connection conn = new Connection();
JCO.Client mConnection = conn.open();
JCO.Table GET_DATA = null;
JCO.Repository mRepository;
mConnection.connect();

mRepository = new JCO.Repository("KEYWORD",mConnection);

try{
    function = this.createFunction("MY RFC NAME");
    if(function != null){

         GET_DATA = function.getTableParameterList.getTable(TABLE_NAME);
         GET_DATA.appendRow();

         function.getImportParameterList.setValue("ID1","USERID");
         function.getImportParameterList.setValue("Test Name","UNAME");
         function.getImportParameterList.setValue("CLASSA","UCLASS");

         GET_DATA.nextRow();
         mConnection.execute(function);
    }
}catch(Exception ex){
    // Exception handling goes here.
}
conn.disconnected();