高图不更新点

Question

我想建立一个用蜡烛棒显示库存的网络图表。首先，我从url加载历史记录json，然后每秒加载当前蜡烛棒数据并更新最后一根蜡烛棒。但是，在setInterval函数中，我无法从图表中加载系列数据。始终返回null

$.getJSON('my_first_url', function(json) {
Highcharts.stockChart('container', {
        rangeSelector: {
            selected: 1
        },

        title: {
            text: 'AAPL Stock Price'
        },

        series: [{
            type: 'candlestick',
            name: 'AAPL Stock Price',
            data: json

        }],
        chart: {
            events: {
                load: function() {
                    var series = this.series[0];
                    setInterval(function() {

                        $.getJSON('my_second_url', function(response) {

                            var data_time = jsonValue[0];
                            var data_open = jsonValue[1];
                            var data_high = jsonValue[3];
                            var data_low = jsonValue[4];
                            var data_close = jsonValue[5];

                            var length = series.data.length;
                            series.data[length - 1].update([data_time_open, data_open, data_high, data_low, data_close], true, true);

                        });
                    }, 1000);
                }
            }
        }


    });

});