我需要使用Google Chart在zk中创建一个图表,如下所示:
这是我的控制器:
public class ChartForm extends GenericComposer{
public List<Task> listTask;
public String json;
/* (non-Javadoc)
* @see org.zkoss.zk.ui.util.GenericComposer#doAfterCompose(org.zkoss.zk.ui.Component)
*/
@Override
public void doAfterCompose(Component comp) throws Exception {
// TODO Auto-generated method stub
super.doAfterCompose(comp);
TaskService ts = new TaskService();
listTask = ts.getTask();
json = new Gson().toJson(listTask); // I't OK until here
System.out.println(json);
}
}
值是:
[{“ taskName”:“自动化”,“小时”:11},{“ taskName”:“手动”,“小时”:2},{“ taskName”:“报告”,“小时”:2},{ “ taskName”:“工资单”,“小时”:2},{“ taskName”:“ MISC”,“小时”:7}]
我的祖尔:
<zk>
<window id="HomePage" apply = "com.dom.form.ChartForm" border="none" width="100%" height="100%" style="background-color:green">
<script type="text/javascript" src="https://www.gstatic.com/chart/loader.js"></script>
<div id="piechart_3d" style="width: 500px; height: 300px;">
<script type="text/javascript">
google.charts.load("current", {packages:["corechart"]});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Task', 'Hours per Day'],
['Automation', 11],
['Manual', 2],
['Report', 2],
['Payroll', 2],
['MISC', 7]
]);
var options = {
title: 'My Daily Work Activities',
is3D: true,
};
var chart = new google.visualization.PieChart(zk.Widget.$("$piechart_3d").$n());
chart.draw(data, options);
}
</script>
</div>
</window>
</zk>
现在我需要获取json对象并将其插入数据(变量)
var data = google.visualization.arrayToDataTable([
['Task', 'Hours per Day'],
['Automation', 11],
['Manual', 2],
['Report', 2],
['Payroll', 2],
['MISC', 7]
]);
最佳答案
您可以使用Clients.evalJavaScript();
将Json从控制器传递到视图,
像这样 :
function drawChart(jsonObj){
var data = JSON.parse(jsonObj);
var chart = new google.visualization.PieChart(zk.Widget.$("$piechart_3d").$n());
chart.draw(data, options);
}
并在您的控制器中:
TaskService ts = new TaskService();
listTask = ts.getTask();
json = new Gson().toJson(listTask);
Clients.evalJavaScript("drawChart('" + json + "')");