public void copy(Object from, Object to, Map<String, Object> context, Collection<String> exclusions, Collection<String> inclusions) {
        if (from == null || to == null) {
            LOG.warn("Attempting to copy from or to a null source. This is illegal and is bein skipped. This may be due to an error in an OGNL expression, action chaining, or some other event.");

            return;
        }

        TypeConverter conv = getTypeConverterFromContext(context);
        Map contextFrom = Ognl.createDefaultContext(from);
        Ognl.setTypeConverter(contextFrom, conv);
        Map contextTo = Ognl.createDefaultContext(to);
        Ognl.setTypeConverter(contextTo, conv);

        PropertyDescriptor[] fromPds;
        PropertyDescriptor[] toPds;

        try {
            fromPds = getPropertyDescriptors(from);
            toPds = getPropertyDescriptors(to);
        } catch (IntrospectionException e) {
            LOG.error("An error occured", e);

            return;
        }

        Map<String, PropertyDescriptor> toPdHash = new HashMap<String, PropertyDescriptor>();

        for (PropertyDescriptor toPd : toPds) {
            toPdHash.put(toPd.getName(), toPd);
        }

        for (PropertyDescriptor fromPd : fromPds) {
            //修改部分 begin
            if("targetSource".equals(fromPd.getName()) || "callback".equals(fromPd.getName())
                    || "callbacks".equals(fromPd.getName())){
                continue;
            }
         //修改部分 end
            if (fromPd.getReadMethod() != null) {
                boolean copy = true;
                if (exclusions != null && exclusions.contains(fromPd.getName())) {
                    copy = false;
                } else if (inclusions != null && !inclusions.contains(fromPd.getName())) {
                    copy = false;
                }

                if (copy == true) {
                    PropertyDescriptor toPd = toPdHash.get(fromPd.getName());
                    if ((toPd != null) && (toPd.getWriteMethod() != null)) {
                        try {
                            Object expr = compile(fromPd.getName());
                            Object value = Ognl.getValue(expr, contextFrom, from);
                            Ognl.setValue(expr, contextTo, to, value);
                        } catch (OgnlException e) {
                            // ignore, this is OK
                        }
                    }

                }

            }

        }
    }