我正在使用Web客户端获取页面源.我已成功登录.之后,我使用相同的对象来获取使用不同URL的页面源,但它显示的异常如下:
java.lang.classCastException: com.gargoylesoftware.htmlunit.UnexpectedPage cannot be cast to com.gargoylesoftware.htmlunit.html.HtmlPage
这是我正在使用的代码.
forms = (List<HtmlForm>) firstPage.getForms(); form = firstPage.getFormByName(""); HtmlTextInput usernameInput = form.getInputByName("email"); HtmlPasswordInput passInput = form.getInputByName("password"); HtmlHiddenInput redirectInput = form.getInputByName("redirect"); HtmlHiddenInput submitInput = form.getInputByName("form_submit"); usernameInput.setValueAttribute(username); passInput.setValueAttribute(password); //Create Submit Button HtmlElement button = firstPage.createElement("button"); button.setAttribute("type","submit"); button.setAttribute("name","submit"); form.appendChild(button); System.out.println(form.asXml()); HtmlPage pageAfterLogin = button.click(); String sourc = pageAfterLogin.asXml(); System.out.println(pageAfterLogin.asXml()); /////////////////////////////////////////////////////////////////////////
HtmlPage downloadPage = null; downloadPage=(HtmlPage)webClient.getPage("url");
但我得到了例外
java.lang.classCastException: com.gargoylesoftware.htmlunit.UnexpectedPage cannot be cast to com.gargoylesoftware.htmlunit.html.HtmlPage
解决方法
在
JavaDoc of UnexpectedPage年,他们说明了这一点
A generic page that is returned whenever an unexpected content type is
returned by the server.
我建议您检查webClient.getPage(“url”)的内容类型;