Java HTMLUnit在基本示例中有许多错误

我试图得到一个使用HTMLUnit的基本示例

我正在尝试获取此代码以在homedepot网站上搜索演练：

try (final WebClient webClient = new WebClient(BrowserVersion.CHROME)) {



        // Get the first page
        final HtmlPage page1 = webClient.getPage("http://www.homedepot.ca");

        // Get the form that we are dealing with and within that form, 
        // find the submit button and the field that we want to change.
        final HtmlForm form = page1.getFormByName("search_terms_form");

        final HtmlSubmitInput button = form.getInputByValue("Go");
        final HtmlTextInput textField = form.getInputByName("q");

        // Change the value of the text field
        textField.setValueAttribute("drill");

        // Now submit the form by clicking the button 
        button.click();




        System.out.println(page1.getTitleText());
    }

根据错误消息判断，我的按钮代码和文本字段似乎不正确。我尝试了一些按姓名、ID和值获取的变体，但没有任何运气。有什么建议吗

非常感谢您的任何意见/反馈

编辑：这是错误代码。当我注释掉按钮和文本字段初始化时，错误消失了

Exception in thread "main" com.gargoylesoftware.htmlunit.ElementNotFoundException: elementName=[input] attributeName=[value] attributeValue=[Go]
at com.gargoylesoftware.htmlunit.html.HtmlForm.getInputByValue(HtmlForm.java:795)
at HDSearch.main(HDSearch.java:30)

---

艾德暗示了原因。如果您仍然需要帮助，可以使用以下命令获取具有给定类名的按钮：

try (final WebClient webClient = new WebClient(BrowserVersion.CHROME)) {
    // Get the first page
    final HtmlPage page1 = webClient.getPage("http://www.homedepot.ca");

    // Get the form that we are dealing with and within that form, 
    // find the submit button and the field that we want to change.
    final HtmlForm form = page1.getFormByName("search_terms_form");

    final HtmlElement button = form.getFirstByXPath("//button[@class='search-button']");
    final HtmlTextInput textField = form.getInputByName("q");

    // Change the value of the text field
    textField.setValueAttribute("drill");

    // Now submit the form by clicking the button 
    button.click();
    System.out.println(page1.getTitleText());
}

---

}

请发布错误消息！当你看不到错误是什么的时候，你几乎不可能知道是什么触发了一个特定的错误@EdCottrell Thx Ed.已发布错误消息。该页面似乎没有值为

Go

的

元素。我在移动设备上，目前无法检查HTML源代码，但您可以先检查。这是一个带有HTML内容的

，这是一个带有HTML内容的

。但是，您的代码会查找值为Go的

。这些根本不是一回事，这就是为什么会收到错误消息。请尝试

getElementsByClassName

。