src/org/nutz/lang/util/NutMap.java
@Override
    public NutMap omit(String... keys) {
        NutMap re = new NutMap();
        for (Map.Entry<String, Object> en : this.entrySet()) {
            String key = en.getKey();
            if (!Lang.contains(keys, key)) {
                re.put(key, en.getValue());
            }
        }
        return re;
    }
@Override
    public NutMap omit(String... keys) {
        NutMap re = new NutMap();
        for (Map.Entry<String, Object> en : this.entrySet()) {
            String key = en.getKey();
            if (!Lang.contains(keys, key)) {
                re.put(key, en.getValue());
            }
        }
        return re;
    }
从 Map 里将指定的键过滤，生成一个新的 Map

@param keys
键
@return 新 Map