如何在不创建* .JcoDestination文件的情况下使用JCo连接

For this example the destination configuration is stored in a file that is called by the program. In practice you should avoid this for security reasons.

这是合理的,也是理解的.但是,没有说明如何设置安全目标提供程序.
我在thread中找到了解决方案,它创建了DestinationDataProvider的自定义实现,并且可以在我的本地机器上运行.但是当我在Portal上部署它时,我得到一个错误,说已经注册了DestinationDataProvider.
所以我的问题是：
如何在SAP Java EE应用程序中存储目标数据？

这是我的代码,以进一步澄清我正在尝试做什么.

public static void main(String... args) throws JCoException {
        CustomDestinationProviderMap provider = new CustomDestinationProviderMap();
        com.sap.conn.jco.ext.Environment.registerDestinationDataProvider(provider);

        Properties connectProperties = new Properties();
        connectProperties.setProperty(DestinationDataProvider.JCO_ASHOST,"host.sap.my.domain.com");
        connectProperties.setProperty(DestinationDataProvider.JCO_SYSNR,"00");
        connectProperties.setProperty(DestinationDataProvider.JCO_CLIENT,"100");
        connectProperties.setProperty(DestinationDataProvider.JCO_USER,"user");
        connectProperties.setProperty(DestinationDataProvider.JCO_PASSWD,"password");
        connectProperties.setProperty(DestinationDataProvider.JCO_LANG,"en");

        provider.addDestination(DESTINATION_NAME1,connectProperties);
        connect();
    }

    public static void connect() throws JCoException {
        String FUNCTION_NAME = "BAPI_EMPLOYEE_GETDATA";
        JCoDestination destination = JCoDestinationManager.getDestination(DESTINATION_NAME1);
        JCoContext.begin(destination);

        JCoFunction function = destination.getRepository().getFunction(FUNCTION_NAME);
        if (function == null) {
            throw new RuntimeException(FUNCTION_NAME + " not found in SAP.");
        }

        //function.getImportParameterList().setValue("EMPLOYEE_ID","48");
        function.getImportParameterList().setValue("FSTNAME_M","ANAKIN");
        function.getImportParameterList().setValue("LASTNAME_M","SKYWALKER");

        try {
            function.execute(destination);
        } catch (AbapException e) {
            System.out.println(e.toString());
            return;
        }

        JCoTable table = function.getTableParameterList().getTable("PERSONAL_DATA");
        for (int i = 0; i < table.getNumRows(); i++) {
            table.setRow(i);
            System.out.println(table.getString("PERNO") + 't' + table.getString("FIRSTNAME") + 't' + table.getString("LAST_NAME")
            +'t' + table.getString("BIRTHDATE")+'t' + table.getString("GENDER"));
        }

        JCoContext.end(destination);
    }