jfreechart plug-in displays data into pie charts, bar charts and line charts_javascript skills

This article takes displaying histograms as an example. Of course, this is just one method; there are many ways to display charts, such as customizing chart labels, using the jfreechart plug-in, etc.;

1. Import js files, including many display methods:

Copy code The code is as follows:

2. Get data from the background:

function init(){
 
  var name3="<%=request.getAttribute("accountlist.name")%>";
  var value3="<%=request.getAttribute("accountlist.values")%>";
  var rate3="<%=request.getAttribute("accountlist.valueshb")%>";
  showChart4(name3,rate3); 
  //showChart3(name3,value3,""); 

 }

3. Assign data to the legend:

function showChart4(names,values){
  var chartObj = new ChartObject();
  var xmlString="";
  chartObj.caption="各承运单位车辆销运比图 ";
  chartObj.showValues='0';
  chartObj.showLabels='1';
  chartObj.sNumberSuffix='%25';
  xmlString = chartObj.createDualYMSColumnXmlByValues(names,values,"","销运比=卷烟销量%车辆运力；",""); 
  var chart = new FusionCharts("Charts/MSColumn3DLineDY.swf", "ChartId2", "1000", "230", "0", "0");
  chart.setDataXML(xmlString); 
  chart.render("chartDiv2");
 }

4. Just write in the jsp page:

Copy code The code is as follows:

5. The results are displayed as follows:

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