我正在尝试在网站上登录我的用户，其中登录按钮是提交类型的输入。我尝试了不同的策略来填充登录页面，我的登录数据和点击按钮，但我总是得到登录页面 作为click（）的返回。我从未获得使用真实浏览器登录的页面。
这是我的代码：
String applicationName = "Mozilla";
String applicationVersion = "5.0 (Windows NT 6.3; WOW64; rv:56.0) Gecko/20100101 Firefox/56.0";
final String userAgent = applicationName + "/" + applicationVersion;
BrowserVersion browserVersion = new BrowserVersion.BrowserVersionBuilder(BrowserVersion.FIREFOX_52)
.setApplicationName(applicationName)
.setApplicationVersion(applicationVersion)
.setUserAgent(userAgent)
.build();
webClient = new WebClient(browserVersion);
java.util.logging.Logger.getLogger("com.gargoylesoftware.htmlunit").setLevel(java.util.logging.Level.ALL);
java.util.logging.Logger.getLogger("org.apache.commons.httpclient").setLevel(java.util.logging.Level.ALL);
webClient.setAjaxController(new com.gargoylesoftware.htmlunit.NicelyResynchronizingAjaxController());
webClient.setIncorrectnessListener(new com.gargoylesoftware.htmlunit.IncorrectnessListener() {
@Override public void notify(String arg0, Object arg1) {}
});
webClient.setJavaScriptErrorListener(new com.gargoylesoftware.htmlunit.javascript.JavaScriptErrorListener() {
@Override public void timeoutError(HtmlPage arg0, long arg1, long arg2) {}
@Override public void scriptException(final HtmlPage arg0, final com.gargoylesoftware.htmlunit.ScriptException arg1) {}
@Override public void malformedScriptURL(HtmlPage arg0, String arg1, java.net.MalformedURLException arg2) {}
@Override public void loadScriptError(HtmlPage arg0, java.net.URL arg1, Exception arg2) {}
});
webClient.setCssErrorHandler(new com.gargoylesoftware.htmlunit.SilentCssErrorHandler());
webClient.getOptions().setThrowExceptionOnFailingStatusCode(false);
webClient.getOptions().setThrowExceptionOnScriptError(false);
webClient.getOptions().setDoNotTrackEnabled(true);
webClient.getOptions().setActiveXNative(true);
webClient.getOptions().setRedirectEnabled(true);
webClient.getOptions().setPrintContentOnFailingStatusCode(true);
webClient.getCookieManager().setCookiesEnabled(true);
webClient.getOptions().setDownloadImages(true);
final int sleepMinSeconds = 1;
final int sleepRandomSeconds = 2;
final long javascriptTimeout = 10000;
System.out.println("Connecting to http://www.milanuncios.com... (" + webClient.getBrowserVersion() + ")");
String loginURL = "https://www.milanuncios.com/mis-anuncios";
System.out.print(" Waiting to avoid being detected as a robot...");
Thread.sleep((long)(Math.random()*sleepRandomSeconds) * 1000);
HtmlPage page = webClient.getPage(loginURL);
if (!page.asXml().contains("<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"es\" lang=\"es\">")) {
System.out.println(page.asXml());
System.out.println("\nDetectado como robot. Saliendo.");
return;
}
System.out.print(" \nWaiting for Javascript to complete...");
webClient.waitForBackgroundJavaScript(javascriptTimeout);
System.out.println("\nOK");
System.out.println("\nDo login...");
System.out.print(" Waiting to avoid being detected as a robot...");
Thread.sleep((sleepMinSeconds + (long)(Math.random()*sleepRandomSeconds)) * 1000);
//<form method="post" action="" onsubmit="return estabien()" class="frmMisAnuncios">
HtmlForm loginForm = (HtmlForm)page.getFirstByXPath("//form[@onsubmit='return estabien()']");
((HtmlInput)loginForm.getOneHtmlElementByAttribute("input", "id", "email")).type("my username");
((HtmlInput)loginForm.getOneHtmlElementByAttribute("input", "id", "contra")).type("my password");
HtmlInput btnSend = (HtmlInput)loginForm.getOneHtmlElementByAttribute("input", "class", "submit btnSend");
page = btnSend.click();
System.out.print(" \nWaiting for Javascript to complete...");
webClient.waitForBackgroundJavaScript(javascriptTimeout);
System.out.println(page.asXml());
结果页面始终是登录页面。为什么呢？
登录表格如下：
<form method="post" action="" onsubmit="return estabien()" class="frmMisAnuncios">
<input value="0" type=hidden id="recarga">
<input value="0" type=hidden id="mensajes">
<div class="sumario">
<img src="https://static.milanuncios.com/imagenes/userarea/ic_user_avatar.png" width="40" height="40" alt="Acceso a mis anuncios"/> Acceso a mis anuncios
</div>
<div class="loginText">
Email
</div>
<div>
<input value="" type=text id="email" maxlength="50" class="field" tabindex="1" autofocus placeholder="Email">
</div>
<div>
<input value="" type=password id="contra" maxlength="4" class="field" tabindex="2" placeholder="Contraseña">
</div>
<div>
<input type="checkbox" value="s" id="rememberme" name="rememberme" class="field" tabindex="3" checked="checked"> No cerrar sesión
</div>
<div class="fbforgotpasstext">
<a href="javascript:forgotPassword()" class="effect" id="txtforgotpassword">Olvidé mi contraseña</a>
</div>
<div class="btnEnviarFrm">
<input type="submit" tabindex="3" class="submit btnSend" value="ENVIAR">
</div>
</form>
和establishien（）Javascript函数：
function estabien() {
var email = document.getElementById('email').value;
var contra = document.getElementById('contra').value;
var recarga = document.getElementById('recarga').value;
var mensajes = document.getElementById('mensajes').value;
var rememberme = document.getElementById('rememberme').checked;
if ((email == '') || (contra == '')) {
alert('Por favor, proporcione el email y la contraseña de anuncio.');
return false;
}
var ajax = newAjax();
ajax.open("POST", '/cmd/');
ajax.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
ajax.send("comando=login&email=" + email + '&contra=' + contra + (rememberme ? '&rememberme=s' : ''));
ajax.onreadystatechange = function () {
if (ajax.readyState == 4) {
oculta('espera');
if (ajax.responseText == 'login') {
if (recarga == 1) {
document.location = '/creditos/recargar.php';
}
else if (mensajes == 1) {
document.location = '/mis-mensajes/';
}
else document.location = '/mis-anuncios/';
}
else if (ajax.responseText.indexOf('emailantiguo') != -1) {
alert('ATENCIÃN: El sistema de acceso a los anuncios ha cambiado ahora hay una sola contraseña para todos ' +
'tus anuncios, si no has recibido la nueva contraseña solicÃtala en recordatorio de contraseñas.');
}
else if (ajax.responseText.indexOf('emailantiguoenviado') != -1) {
alert('ATENCIÃN: El sistema de acceso a los anuncios ha cambiado ahora hay una sola contraseña para todos ' +
'tus anuncios, acabamos de enviar a tu correo la nueva clave (si no aparece no olvides mirar en la carpeta de spam o correo no deseado).');
}
else if (ajax.responseText.indexOf('malcontra') != -1) {
alert('El email o la contraseña no son correctos.\r\n\r\nRecuerda que las contraseñas de milanuncios\r\nson de 4 caracteres de longitud');
}
else {
alert('Se produjo un error, inténtelo de nuevo ' + ajax.responseText);
document.location = '/mis-anuncios/';
}
}
};
ver('espera');
return false;
}
[编辑] 作为附加信息，首次加载登录页面时，它会显示Javascript错误：
EcmaError: lineNumber=[1] column=[0] lineSource=[ function () {]name=[TypeError] sourceName=[https://jssdk.pulse.schibsted.com/autoTrackerMilanuncios.min.js] message=[TypeError: Cannot read property "0" from undefined (https://jssdk.pulse.schibsted.com/autoTrackerMilanuncios.min.js#1)]
com.gargoylesoftware.htmlunit.ScriptException: TypeError: Cannot read property "0" from undefined (https://jssdk.pulse.schibsted.com/autoTrackerMilanuncios.min.js#1)
....
== CALLING JAVASCRIPT ==
function () {
o.cb();
}
点击（）后出现Whem登录页面此错误不再出现
答案 0 :(得分：0)
看起来你的登录做了一些ajax魔术，因此会进行某种重定向以获得正确的结果页面
document.location = '/mis-anuncios/';
此调用使用新网址的内容替换当前浏览器窗口的内容。因为ajax是异步的并且click（）方法返回同步结果，所以页面变量指向初始页面。您必须在等待后重新获取当前窗口的内容。 尝试这样的事情：
page = btnSend.click();
System.out.print(" \nWaiting for Javascript to complete...");
webClient.waitForBackgroundJavaScript(javascriptTimeout);
// reget the page of the current window to deal with ajax redirects
page.getEnclosingWindow().getTopWindow().getEnclosedPage();
System.out.println(page.asXml());
希望有所帮助
答案 1 :(得分：0)
在RBRi的难以置信的帮助下，他找到了最简单的程序版本，我可以找到导致问题的代码行：
webClient.setAjaxController(new com.gargoylesoftware.htmlunit.NicelyResynchronizingAjaxController());
没有这一行并添加RBRi建议的正确页面恢复：
page = (HtmlPage) page.getEnclosingWindow().getTopWindow().getEnclosedPage();
问题解决了！
我希望我可以通过这次讨论向有人提供帮助。再见。