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我正在尝试使用 HtmlUnit 提交表单，但不幸的是，在尝试了几乎所有内容后，我得到了相同的页面，并填写了字段。我期待另一个页面，其中包含我需要处理的信息。当我使用普通的网络浏览器时，我确实明白这一点。显然有些事情我做的不对。请帮忙！

final WebClient webClient = new WebClient(BrowserVersion.CHROME_16, "172.16.33.226", 8080);
webClient.setRefreshHandler(new RefreshHandler() {

            public void handleRefresh(Page page, URL url, int arg) throws IOException {
                System.out.println("handleRefresh");
            }
        });
webClient.getOptions().setRedirectEnabled(true);
webClient.getCookieManager().setCookiesEnabled(true);
webClient.getOptions().setCssEnabled(true);
webClient.setAjaxController(new NicelyResynchronizingAjaxController());
final HtmlPage page = webClient.getPage("http://221.120.224.197/ovportal/jsp/security/obs_login_html.jsp");
System.out.println(page.getTitleText());
final HtmlForm nform = page.getFormByName("nform");
final HtmlForm pwform = page.getFormByName("pwform");

HtmlSubmitInput button;
final HtmlTextInput textField;
final HtmlPasswordInput passField;
final HtmlHiddenInput hidden;
textField = nform.getInputByName("J_USERNAME");

这不是真正的用户名。

textField.setValueAttribute("******");
hidden = pwform.getInputByName("J_USERNAME");
passField = pwform.getInputByName("J_PASSWORD");

这不是真正的密码。

passField.setValueAttribute("******");
button = pwform.getInputByValue("Login");
pwform.getSelectByName("Timezone").setSelectedAttribute("PLT", true);
java.util.List<HtmlOption> list = pwform.getSelectByName("Timezone").getSelectedOptions();
for (HtmlOption option : list){
    System.out.println(option.toString());
}
System.out.println("Before click " + hidden.getValueAttribute() + " " + textField.getValueAttribute() + ": ");

HtmlPage page2 = (HtmlPage) button.click();
System.out.println(page2.getUrl().toString());
System.out.println("After click " + hidden.getValueAttribute() + " " + textField.getValueAttribute() + ": "
                + passField.getValueAttribute() + ": " + page2.getTitleText() + "\n" + page2.asText());
String htmlContent = page2.asXml();
java.io.File htmlFile = new java.io.File("C:/index.html");
java.io.PrintWriter pw = new java.io.PrintWriter(htmlFile);
pw.print(htmlContent);
pw.close();
java.util.List<HtmlAnchor> anchors = page2.getAnchors();
for (HtmlAnchor anch : anchors) {
    System.out.println(anch.getHrefLangAttribute() + "*.*" + anch.getHrefAttribute());
    }

webClient.closeAllWindows();
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