@Override
    public String toJSONString(Object obj) {
        try {
            return mapper.writeValueAsString(obj);
        } catch (JsonProcessingException e) {
            throw new JSONException(e);
        }
    }
@author Robert HG (254963746@qq.com) on 11/20/15.
lts-core/src/main/java/com/github/ltsopensource/core/json/jackson/JacksonJSONAdapter.java