java报错：java.lang.Integer cannot be cast to java.lang.Long

这个报错解决方案仅适用于获取JSONArray 对象中的Long型数据

1、java报错:Integer强制转换成Long出错

    public void handle(String eventData) {        LOGGER.info("handle metaq event:{} data:{}", this.getEvent(), eventData);        JSONObject data = JSON.parseObject(eventData);        long timestamp = data.getLong("t");        JSONArray idJsonArr = data.getJSONArray("ids");        for (Iterator<Object> iterator = idJsonArr.iterator(); iterator.hasNext();) {            // 出错行            Long id = (Long) iterator.next();             cnServiceDaoRedis.add(id, timestamp);        }    }

2、解决方案：

    public void handle(String eventData) {        LOGGER.info("handle metaq event:{} data:{}", this.getEvent(), eventData);        JSONObject data = JSON.parseObject(eventData);        long timestamp = data.getLong("t");        JSONArray idJsonArr = data.getJSONArray("ids");        for (int i = 0; i < idJsonArr.size(); i++) {            // 换成getLong方法            Long id = idJsonArr.getLong(i);            cnServiceDaoRedis.add(id, timestamp);        }    }