依賴的api加了個類，商品詳情找不到這個類

會一直反射這個找不到的類，qps高的情況下會對性能造成影響，現(xiàn)象是，ygc頻繁且每次ygc時間有幾百ms

public Deserializer getDeserializer(String type)
            throws HessianProtocolException {
        if (type == null || type.equals(""))
            return null;

        Deserializer deserializer;

        if (_cachedTypeDeserializerMap != null) {
            deserializer = (Deserializer) _cachedTypeDeserializerMap.get(type);

            if (deserializer != null)
                return deserializer;
        }


        deserializer = (Deserializer) _staticTypeMap.get(type);
        if (deserializer != null)
            return deserializer;

        if (type.startsWith("[")) {
            Deserializer subDeserializer = getDeserializer(type.substring(1));

            if (subDeserializer != null)
                deserializer = new ArrayDeserializer(subDeserializer.getType());
            else
                deserializer = new ArrayDeserializer(Object.class);
        } else {
            try {
                Class cl = Class.forName(type, false, _loader);
                deserializer = getDeserializer(cl);
            } catch (Exception e) {
                log.warning("Hessian/Burlap: '" + type + "' is an unknown class in " + _loader + ":\n" + e);

                log.log(Level.FINER, e.toString(), e);
            }
        }

        if (deserializer != null) {
            if (_cachedTypeDeserializerMap == null)
                _cachedTypeDeserializerMap = new ConcurrentHashMap(8);

            _cachedTypeDeserializerMap.put(type, deserializer);
        }

        return deserializer;
    }