Question

我下载了所有必要的罐子并运行了这个测试程序：

public void getElements() throws Exception {
final WebClient webClient = new WebClient();
final HtmlPage page = webClient.getPage("https://www.facebook.com/");
final HtmlDivision div = page.getHtmlElementById("_li");
//final HtmlAnchor anchor = page.getAnchorByName("anchor_name");

webClient.closeAllWindows();

} 但由于错误，它每次都会退出： דצמ09,2014

2:04:10 PM com.gargoylesoftware.htmlunit.IncorrectnessListenerImpl notify

WARNING: Obsolete content type encountered: 'application/x-javascript'.

דצמ 09, 2014 2:04:11 PM com.gargoylesoftware.htmlunit.IncorrectnessListenerImpl notify

WARNING: Obsolete content type encountered: 'application/x-javascript'.

Exception in thread "main" com.gargoylesoftware.htmlunit.ElementNotFoundException: elementName=[*] attributeName=[id] attributeValue=[_li]

    at com.gargoylesoftware.htmlunit.html.HtmlPage.getElementById(HtmlPage.java:1729)

    at com.gargoylesoftware.htmlunit.html.HtmlPage.getHtmlElementById(HtmlPage.java:1679)

    at DmozSpider.main(DmozSpider.java:16)

Answer 1

在第

行

page.getHtmlElementById("_li");

代码抛出ElementNotFoundException，因为DOM没有任何ID为“_li”的XML元素。正如Javadoc of ElementNotFoundException所述：

在DOM模型中找不到指定的XML元素时抛出的异常。

如果您要选择带class="_li"的div标签，则应使用

page.getByXPath("//div[@class='_li']");

HTMLUNIT运行良好

1 个答案: