问如何使用java反射自动将值从java bean复制到protobuf消息对象？

EN

public static void setMessageBuilder(com.google.protobuf.GeneratedMessage.Builder message,Descriptors.Descriptor descriptor,Object srcObject) throws Exception {
    String cname = srcObject.getClass().getName();
    /*BeanMapper.getSimpleProperties -- this is a warpper method that gets the list of property names*/ 
    List<String> simpleProps = BeanMapper.getSimpleProperties(srcObject.getClass());

    Map map = new HashMap();
    for (String pName : simpleProps) {
        System.out.println(" processing property "+ pName);
        Object value= PropertyUtils.getProperty(srcObject, pName);
        if(value==null) continue;

        Descriptors.FieldDescriptor fd=descriptor.findFieldByName(pName) ;

        System.out.println(" property "+  pName+" , found fd :"+ (fd==null ? "nul":"ok"));
         message.setField(fd, value);
         System.out.println(" property "+  pName+"  set ok,");

    }
    return ;
}

Mapper mapper = new DozerBeanMapper();
DestinationObject destObject = mapper.map(sourceObject, DestinationObject.class);