Highcharts下载地址
Highcharts
Highcharts-7.2.0/examples/line-time-series
Django 2.1
展示网址
这里的url就是后台请求的地址
然后html的请求数据用这个函数获取
var chart = null; // 定义全局变量 $(document).ready(function() { chart = Highcharts.chart('container', { chart: { zoomType: 'x', events: { load: request_cpu_Data() // 图表加载完毕后执行的回调函数 } }, title: { text: 'The CPU info chart' }, subtitle: { text: document.ontouchstart === undefined ? 'Click and drag in the plot area to zoom in' : 'Pinch the chart to zoom in' }, xAxis: { type: 'datetime' }, yAxis: { title: { text: 'Exchange rate' } }, legend: { enabled: false }, plotOptions: { area: { fillColor: { linearGradient: { x1: 0, y1: 0, x2: 0, y2: 1 }, stops: [ [0, Highcharts.getOptions().colors[0]], [1, Highcharts.Color(Highcharts.getOptions().colors[0]).setOpacity(0).get('rgba')] ] }, marker: { radius: 2 }, lineWidth: 1, states: { hover: { lineWidth: 1 } }, threshold: null } }, series: [{ type: 'area', name: 'USD to EUR', data: [] }] });后台处理urls.py
urlpatterns = [ url(r'^chart/$', views.chart, name='chart'), url(r'^chart_json/$', views.chart_json, name='chart_json'), url(r'^server_cpu_json/$', views.server_cpu_json, name='server_json'), ... ]后台处理views.py
def server_cpu_json(request): data = [] if request.method == "GET": i = 0 while(i < 2): t = time.time() time_stamp = int(round(t * 1000)) # 转换为毫秒的时间戳 cpu = getCPUstate() data.append([int(time_stamp), float('%.2f' % cpu)]) print(data) i += 1 isdict = json.dumps(data) # json序列化列表 print(isdict) return HttpResponse(isdict, content_type="application/json")传输的数据格式是这样的：
[[1572603699758, 74.7], [1572603699758, 74.7]]这里需要注意几个点
1、div的id需要区分
<div id="container" style="min-width: 310px; height: 320px; margin: 0 auto"></div> <div id="container2" style="min-width: 310px; height: 320px; margin: 0 auto"></div>2、需要另外定义全局变量
var chart = null; // 定义全局变量 var chart2 = null; // 定义第二个图表的全局变量3、注意应用全局变量
chart2 = Highcharts.chart('container2', { chart: { zoomType: 'x', events: { load: request_mem_Data // 图表加载完毕后执行的回调函数 } }, title: { text: 'The MEM info chart' }, subtitle: { text: document.ontouchstart === undefined ? 'Click and drag in the plot area to zoom in' : 'Pinch the chart to zoom in' }, xAxis: { type: 'datetime' }, yAxis: { title: { text: 'Exchange rate' } }, legend: { enabled: false }, plotOptions: { area: { fillColor: { linearGradient: { x1: 0, y1: 0, x2: 0, y2: 1 }, stops: [ [0, Highcharts.getOptions().colors[0]], [1, Highcharts.Color(Highcharts.getOptions().colors[0]).setOpacity(0).get('rgba')] ] }, marker: { radius: 2 }, lineWidth: 1, states: { hover: { lineWidth: 1 } }, threshold: null } }, series: [{ type: 'area', name: 'USD to EUR', data: [] }] })下面给出完整的html代码
<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <link rel="shortcut icon" href="/static/images/Jiaicon.ico"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>SERVER INFO</title> <style type="text/css"> </style> </head> <body> <script src="/static/Highcharts-7.2.0/code/highcharts.js"></script> <script src="/static/Highcharts-7.2.0/code/modules/data.js"></script> <script src="/static/Highcharts-7.2.0/code/modules/exporting.js"></script> <script src="/static/Highcharts-7.2.0/code/modules/export-data.js"></script> <script src="/static/Highcharts-7.2.0/code/themes/dark-unica.js"></script> <script src="/static/JiaBlog/js/jquery.js"></script> <div id="container" style="min-width: 310px; height: 320px; margin: 0 auto"></div> <div id="container2" style="min-width: 310px; height: 320px; margin: 0 auto"></div> <script type="text/javascript"> Highcharts.setOptions({ global: { useUTC: false } }); function request_cpu_Data() { $.ajax({ {#url: 'https://cdn.jsdelivr.net/gh/highcharts/highcharts@v7.0.0/samples/data/usdeur.json',#} url: '/cloudserver/server_cpu_json', type: 'GET', success: function(point) { var series = chart.series[0], shift = series.data.length > 20; // 当数据点数量超过 20 个，则指定删除第一个点 // 新增点操作 //具体的参数详见：https://api.hcharts.cn/highcharts#Series.addPoint console.log(point); for(var i=0;i<2;i++) { chart.series[0].addPoint(point[i], true, shift); } // 一秒后继续调用本函数 setTimeout(request_cpu_Data, 1000); }, cache: false }); } function request_mem_Data() { $.ajax({ {#url: 'https://cdn.jsdelivr.net/gh/highcharts/highcharts@v7.0.0/samples/data/usdeur.json',#} url: '/cloudserver/server_mem_json', type: 'GET', success: function(point) { var series = chart2.series[0], shift = series.data.length > 20; // 当数据点数量超过 20 个，则指定删除第一个点 // 新增点操作 //具体的参数详见：https://api.hcharts.cn/highcharts#Series.addPoint console.log(point); for(var i=0;i < 2; i++) { chart2.series[0].addPoint(point[i], true, shift); } // 一秒后继续调用本函数 setTimeout(request_mem_Data, 1000); }, cache: false }); } var chart = null; // 定义全局变量 var chart2 = null; // 定义第二个图表的全局变量 $(document).ready(function() { chart = Highcharts.chart('container', { chart: { zoomType: 'x', events: { load: request_cpu_Data() // 图表加载完毕后执行的回调函数 } }, title: { text: 'The CPU info chart' }, subtitle: { text: document.ontouchstart === undefined ? 'Click and drag in the plot area to zoom in' : 'Pinch the chart to zoom in' }, xAxis: { type: 'datetime' }, yAxis: { title: { text: 'Exchange rate' } }, legend: { enabled: false }, plotOptions: { area: { fillColor: { linearGradient: { x1: 0, y1: 0, x2: 0, y2: 1 }, stops: [ [0, Highcharts.getOptions().colors[0]], [1, Highcharts.Color(Highcharts.getOptions().colors[0]).setOpacity(0).get('rgba')] ] }, marker: { radius: 2 }, lineWidth: 1, states: { hover: { lineWidth: 1 } }, threshold: null } }, series: [{ type: 'area', name: 'USD to EUR', data: [] }] }); chart2 = Highcharts.chart('container2', { chart: { zoomType: 'x', events: { load: request_mem_Data // 图表加载完毕后执行的回调函数 } }, title: { text: 'The MEM info chart' }, subtitle: { text: document.ontouchstart === undefined ? 'Click and drag in the plot area to zoom in' : 'Pinch the chart to zoom in' }, xAxis: { type: 'datetime' }, yAxis: { title: { text: 'Exchange rate' } }, legend: { enabled: false }, plotOptions: { area: { fillColor: { linearGradient: { x1: 0, y1: 0, x2: 0, y2: 1 }, stops: [ [0, Highcharts.getOptions().colors[0]], [1, Highcharts.Color(Highcharts.getOptions().colors[0]).setOpacity(0).get('rgba')] ] }, marker: { radius: 2 }, lineWidth: 1, states: { hover: { lineWidth: 1 } }, threshold: null } }, series: [{ type: 'area', name: 'USD to EUR', data: [] }] }); }); </script> </body> </html>By the way，我这里用的是Highcharts示例里的
Highcharts-7.2.0/examples/line-time-series
