如何在 Java 中使用 HtmlUnit 从下拉框中选择一个元素？
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How to use HtmlUnit in Java to select an element from a drop down box?
提问by Peter
I'm using HtmlUnit in Java to navigate to a web page. From that webpage i need to log in and then go from there. I know how to type in the user name and password but then there is a dropdown box where i need to select one of the options. How do i select an option from a dropdown box in HtmlUnit? Thanks
我在 Java 中使用 HtmlUnit 导航到网页。从那个网页我需要登录然后从那里去。我知道如何输入用户名和密码，但是有一个下拉框，我需要在其中选择一个选项。如何从 HtmlUnit 的下拉框中选择一个选项？谢谢
回答by skaffman
You can navigate and manipulate the page <select>elements using HtmlSelect:
您可以<select>使用HtmlSelect以下方法导航和操作页面元素：
WebClient client = ...
Page page = client.getPage(url);
HtmlSelect select = (HtmlSelect) page.getElementById(mySelectId);
HtmlOption option = select.getOptionByValue(desiredOptionValue);
select.setSelectedAttribute(option, true);
The JavaDocshows that there are a lot of flexible API methods for doing things like this.
该JavaDoc中显示，有很多做这样的事情灵活的API方法。
回答by George
Following code:
以下代码：
HtmlSelect select = page.getElementById(mySelectId);
should be:
应该：
HtmlSelect select = (HtmlSelect)page.getElementById(mySelectId);
回答by Orod Semsarzadeh
Add the follwoing lines:
添加以下几行：
protected void selectOption(WebElement el, String option)
{
Select select = new Select(el);
select.selectByVisibleText(option);
}
protected WebElement elById(String id)
{
return driver.findElement(By.id(id));
}
// "title" is your drop-down HTML id
public void populateForm(String elValue)
{
selectOption(elById("title"), elValue);
}
