Question

外部网站上有两个HtmlSelects。

第一个（＆＃34;句号＆＃34;）有静态属性。但是第二个（＆＃34; date＆＃34;）处于禁用状态，并且在加载页面时没有选项。（＆＃34; date＆＃34;）字段被启用，并且在选择（＆＃34; period＆＃34;）时填充数据。通过HTMLUnit执行时，此功能不起作用。

下面提到的是我的代码

WebClient webClient = new WebClient();
webClient.getOptions().setJavaScriptEnabled(true);
webClient.getOptions().setThrowExceptionOnScriptError(false);
webClient.getOptions().setCssEnabled(false);
webClient.setAjaxController(new NicelyResynchronizingAjaxController());
HtmlPage page = webClient.getPage(PAGE_URL);
HtmlSelect select = (HtmlSelect) page.getElementById("period");
HtmlOption option = select.getOptionByText("Q1");
select.setSelectedAttribute(option, true);  select.fireEvent(Event.TYPE_CHANGE);
Thread.sleep(20000);
HtmlSelect select1 = (HtmlSelect) page.getElementById("date");
HtmlOption option1 = select1.getOptionByValue("2"); //EXCEPTION IN THIS LINE
select1.setSelectedAttribute(option1, true);

以下是捕获的异常

com.gargoylesoftware.htmlunit.ElementNotFoundException: elementName=[option] attributeName=[value] attributeValue=[2]
    at com.gargoylesoftware.htmlunit.html.HtmlSelect.getOptionByValue(HtmlSelect.java:437)

似乎（＆＃34; date＆＃34;）字段未启用并填充。

非常感谢任何帮助。提前谢谢！

Answer 1

Without more details it is really tricky to give some advice.

Please report:

the version of HtmlUnit you are using
the PAGE_URL you are using to give us the option to reproduce your case; if your page is private maybe you are using one of these webframeworks and there is a good chance to find a demo page to show your problem
check the page code and make sure the trigger of the change event is really the select
There is no need to trigger the change event, This is done by HtmlUnit alreade; replace select.setSelectedAttribute(option, true); select.fireEvent(Event.TYPE_CHANGE); with option.setSelected(true);
try to figure out if the ajax requests gets triggered by using a http proxy like Charles or by enabling HttpClient wire logging

Hope that helps, if you need more support provide a complete reproducible sample.

Regarding your version: version 2.13 is really outdated and of course we did many fixes for event handling/processing and also for the select control. Please use the latest version - this is the only version we can support because the development team is really small.

HTMLUnit无法在onchangeEvent上触发ajaxCall

1 个答案: