如何在Java中使用HtmlUnit？

Question

我正在尝试使用Java中的HtmlUnit登录网站.首先我输入用户名然后输入密码.之后我需要从下拉框中选择一个选项.输入用户和密码似乎有效,但当我尝试从下拉框中选择项目时,我收到错误.谁能帮我解决这个问题？我的代码如下:

import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlElement;
import com.gargoylesoftware.htmlunit.html.HtmlOption;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
import com.gargoylesoftware.htmlunit.html.HtmlSelect;


public class homePage {
  public static void main(String[] args) throws Exception {

    final WebClient webClient = new WebClient();
    final HtmlPage page = webClient.getPage("website name here");
    HtmlElement usrname = page.getElementByName("username");
    usrname.click();
    usrname.type("myusername");
    HtmlElement psswrd = page.getElementByName("password");
    psswrd.click();
    psswrd.type("mypassword");
    HtmlSelect select = (HtmlSelect) page.getElementById("cmbProducts");
    HtmlOption option = select.getOptionByValue("ITDirect");
    select.setSelectedAttribute(option, true);
    HtmlElement signin = page.getElementByName("SignIn");
    signin.click();
    System.out.println(page.getTitleText());
    webClient.closeAllWindows();
  }
}

Answer 1

这是 HTMLunit 单元测试中的代码。

final HtmlSelect select = form.getSelectsByName("select1").get(0);
final List<HtmlOption> expected = new ArrayList<HtmlOption>();
expected.add(select.getOptionByValue("option1"));
expected.add(select.getOptionByValue("option3"));

请注意，它们使用 getSelectsByName 而不是 getElementById。

这是这些单元测试的链接，因此您可以查看它们如何使用 API 进行规定。http://htmlunit.sourceforge.net/xref-test/com/gargoylesoftware/htmlunit/html/HtmlSelectTest.html