使用 JCo 从 SAP 系统读取表

Question

我正在尝试从 SAP 系统读取表，但总是收到此错误：Exception in thread "main" com.sap.conn.jco.JCoRuntimeException: (127) JCO_ERROR_FIELD_NOT_FOUND: Field EMPLOYEE is not a member of INPUTat com.sap.conn.jco.rt.AbstractMetaData.indexOf(AbstractMetaData.java:404)at com.sap.conn.jco.rt.AbstractRecord.setValue(AbstractRecord.java:4074)at testConf.StepServer.main(StepServer.java:50)这是我的代码：public static void main(String[] args) {  // This will create a file called mySAPSystem.jcoDestination  System.out.println("executing");  String DESTINATION_NAME1 = "mySAPSystem";  Properties connectProperties = new Properties();  connectProperties.setProperty(DestinationDataProvider.JCO_ASHOST, "xxx.xxx.x.xxx");  connectProperties.setProperty(DestinationDataProvider.JCO_SYSNR,  "xx");  connectProperties.setProperty(DestinationDataProvider.JCO_CLIENT, "xxx");  connectProperties.setProperty(DestinationDataProvider.JCO_USER,   "username");  connectProperties.setProperty(DestinationDataProvider.JCO_PASSWD, "test");  connectProperties.setProperty(DestinationDataProvider.JCO_LANG,   "en");  createDestinationDataFile(DESTINATION_NAME1, connectProperties);  // This will use that destination file to connect to SAP  try {      JCoDestination destination = JCoDestinationManager.getDestination("mySAPSystem");      System.out.println("Attributes:");      System.out.println(destination.getAttributes());      System.out.println();      destination.ping();  } catch (JCoException e) {      e.printStackTrace();  }当它说JCO_ERROR_FIELD_NOT_FOUND时错误很明显：字段 EMPLOYEE 不是 INPUT 的成员，但员工是我表中的一个字段。