我正在尝试加载 div 的内容，该内容在触发监听器时会发生变化。
我目前拥有的java代码是:
public static void main(String arg[]) throws IOException{
String url = "http://localhost/chartsTest/test.html";
WebClient wc = new WebClient();
HtmlPage p = null;
try {
System.out.println("Attempting to load page: " + url);
p = wc.getPage(url);
System.out.println("Sucsess!");
} catch (Exception e) {
System.err.println("Failed to get page");
}
JavaScriptJobManager m = p.getEnclosingWindow().getJobManager();
int c;
while ((c = m.getJobCount()) > 0){
System.out.println("Jobs: " + c);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {}
}
div = p.getHtmlElementById("test");
content = div.asText();
System.out.println(content);
wc.close();
}
我的 test.html 页面(加载谷歌图表)是:
<html>
<head>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load("visualization", '1', {packages:['corechart']});
google.setOnLoadCallback(drawChart);
function drawChart() {
// var query = new google.visualization.Query('simpleexample?tq=select name,population');
// query.send(handleSimpleDsResponse);
handleSimpleDsResponse(true);
function handleSimpleDsResponse(response) {
// var data = response.getDataTable();
var data = google.visualization.arrayToDataTable([
['Year', 'Sales', 'Expenses'],
['2013', 1000, 400],
['2014', 1170, 460],
['2015', 660, 1120],
['2016', 1030, 540]
]);
var chart_div = document.getElementById('chart_div');
var chart_data = document.getElementById('chart_data');
var test = document.getElementById('test');
var chart = new google.visualization.AreaChart(chart_div);
// Wait for the chart to finish drawing before calling the getImageURI() method.
google.visualization.events.addListener(chart, 'ready', function () {
chart_div.innerHTML = '<img src="' + chart.getImageURI() + '">';
chart_data.innerHTML = chart.getImageURI();
test.innerHTML = "after";
});
chart.draw(data);
}
}
</script>
</head>
<body>
<div id="test">before</div>
<div id='chart_div'></div>
<div id="chart_data"></div>
</body>
</html>
但是当我打印 div 时，它总是等于 before 而不是 after。如何获取图表加载完成后的值？
最佳答案
这是处理Promise.resolve()的一个错误，它已在 SVN 中修复。 .
请使用new WebClient(BrowserVersion.CHROME)，并带有 latest build或快照。
不需要 wait()，因为它不是基于 AJAX 的。
关于javascript - javascript 完成后如何让 HtmlUnit 更新页面，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33152614/