动态获取数据说白点就是从后台传值到前台,前台把这些值赋值给x轴与y轴(这里指的是你X轴与Y轴都是变化的数据,如果你的X轴是固定的,像时间等等的那就另说)。
柱状图的动态传值:
//获取后台数据 var x = [];//X轴 var y = [];//Y轴 var xtext = [];//X轴TEXT var color = ["#FFB6C1","#DC143C","#C71585","#D8BFD8","#8B008B","#4B0082","#6A5ACD","#0000FF","#B0C4DE","#1E90FF","#00CED1","#228B22"]; $.ajax({ type:'post', url:'${pageContext.request.contextPath}/InOrder!showInfoList.do', success:function(data){ var json = eval("("+data+")");//转换数据 for(var key in json.rows){ json.rows[key].y = json.rows[key].money; //给Y轴赋值 xtext = json.rows[key].name;//给X轴TEXT赋值 json.rows[key].color= color[key]; } //新建图表 chart = new Highcharts.Chart({ chart: { renderTo: 'container', //图表放置的容器,关联DIV#id type: 'column', //柱状图 reflow:true //自适应div的大小 }, title: { text: '分类采购额' //图表标题 }, xAxis: { //X轴标签 categories:[xtext] }, yAxis: { //设置Y轴 title: { text: '采购额 (元)' } }, credits:{ //右下角文本不显示 enabled: false }, tooltip:{ //鼠标移动到图形上时显示的提示框 headerFormat: '{series.name}:<span style="font-size:12px"><b>{point.key}</b></span><table>', pointFormat: '<tr><td>采购额: </td>' + '<td style="padding:0"><b>{point.y:.1f} ¥</b></td></tr>', footerFormat: '</table>', shared: true, useHTML: true }, series:[{ name:"商品类别" }] }), chart.series[0].setData(json.rows);//数据填充到highcharts上面 }, } error:function(e){ } });
//action层调用从数据库中查询出来的方法,获取数据。Dao层从数据库中查询,与service层调用Dao层方法
public void showInfoList() throws IOException{ List list = null; List _list = new ArrayList(); try { list = (ArrayList<DocProSto>)inOrderListService.CountAll(); //调用查询方法 if(list.size()>0){ for(DocProSto pro:list){ //遍历后台传值 Map<String,Object> map = new HashMap<String,Object>(); map.put("money",pro.getMoney() ); map.put("name", pro.getProduct().getTprosort().getName()); map.put("number",pro.getNumber()); _list.add(map); } } } catch (Exception e) { e.printStackTrace(); } Map<String, Object> jsonMap = new HashMap<String, Object>();//定义map jsonMap.put("rows", _list);//rows键 存放每页记录 list result = JSON.toJSONStringWithDateFormat(jsonMap,"yyyy-MM-dd");//格式化result response.setContentType("text/html;charset=utf-8"); PrintWriter out = response.getWriter(); out.print(result); out.flush(); out.close(); }