我对 Google API 流程图有疑问。我想在一个 jsp 页面上添加几个流程图。在我的流程图 Controller 中，我运行从数据库获得的列表，并且我想为 foreach 制作一个流程图。
将其添加到模型并将其显示在 jsp 页面上的最佳方法是什么？
流程图代码是这样的:
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Year', 'Sales', 'Expenses'],
['2004', 1000, 400],
['2005', 1170, 460],
['2006', 660, 1120],
['2007', 1030, 540]
]);
var options = {
title: 'Company Performance'
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
该代码但在 for 循环中填充了我的值，但我不知道如何将其提供给模型？ (由于 String 不起作用，我只是尝试过:D)
最佳答案
在一页中显示 2 个图表的代码。您可以调整逻辑并达到您的要求。 Docs
// Load the Visualization API and the piechart package.
google.load('visualization', '1.0', {'packages':['corechart']});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart1);
google.setOnLoadCallback(drawChart2);
// Callback that creates and populates a data table,
// instantiates the pie chart, passes in the data and
// draws it.
function drawChart1() {
// Create the data table.
var data = new google.visualization.DataTable();
data.addColumn('string', 'Topping');
data.addColumn('number', 'Slices');
data.addRows([
['Mushrooms', 3],
['Onions', 1],
['Olives', 1],
['Zucchini', 1],
['Pepperoni', 2]
]);
// Set chart options
var options = {'title':'How Much Pizza I Ate Last Night',
'width':400,
'height':300};
// Instantiate and draw our chart, passing in some options.
var chart = new google.visualization.PieChart(document.getElementById('chart_div1'));
chart.draw(data, options);
}
function drawChart2() {
// Create the data table.
var data = new google.visualization.DataTable();
data.addColumn('string', 'Topping');
data.addColumn('number', 'Slices');
data.addRows([
['Mushrooms', 3],
['Onions', 1],
['Olives', 1],
['Zucchini', 1],
['Pepperoni', 2]
]);
// Set chart options
var options = {'title':'How Much Pizza I Ate Last Night',
'width':400,
'height':300};
// Instantiate and draw our chart, passing in some options.
var chart = new google.visualization.BarChart(document.getElementById('chart_div2'));
chart.draw(data, options);
}
</script>
</head>
<body>
<!--Div that will hold the pie chart-->
<div id="chart_div1"></div>
<div id="chart_div2"></div>
</body>
</html>
关于java - 使用 google API 在 jsp 页面上显示流程图的最佳方式，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/11222897/