public float getFloatValue(String key) {
        Object value = get(key);

        if (value == null) {
            return 0F;
        }

        return castToFloat(value);
    }
@author Robert HG (254963746@qq.com) on 11/20/15.
lts-core/src/main/java/com/github/ltsopensource/core/json/jackson/JacksonJSONObject.java