Selenium with PhantomJS:表单正在验证但未提交

我通过Selenium Webdriver的PhantomJS API提交表单时遇到了一个奇怪的问题。单击提交按钮后，表单将得到验证（用户名和密码是否太短，或空白等），但最终不会提交。也就是说，如果我提交无效的表单，并检查屏幕截图，则会出现警报通知。如果我提交有效的表格，则没有任何反应。页面上的JS应该验证表单，然后在单击提交按钮时提交表单。

有几个排除。我已经在提交按钮上尝试了.click()和.submit()，这是一个按钮元素。我还尝试.submit()表单本身和表单中的任意元素（如密码），Selenium 允许这样做。

事实上，如果我驾驶的是Firefox而不是PhantomJS，同样的代码就可以了。不过，我宁愿不切换，因为Firefox速度较慢，并且给我带来了不可预测的连接问题。

我的规格：我在Ubuntu 14.04 LTS（GNU/Linux 3.17.1-elastic x86_64）上通过Python 2.7使用Selenium版本1.43和PhantomJS 1.98。

下面的代码。首先是我的硒代码。然后是表单的 html。然后从站点登录.js源代码。我认为 js 中发生的事情是，由于某种原因，正在运行来自 .validate 函数的invalidHandler，但submitHandler没有？提前感谢您的关注。

# enter username and password up here first
submitEl = self.find_element_by_css_selector("button[type='submit']")
submitEl.click()
self.save_screenshot('login_submission.png')

Edit2："self"是从Webdriver.PhantomJS类继承的驱动程序对象。现在表单 html：

            <form class="form-login" action="" name="login" method="POST">
                <div class="errorHandler alert alert-danger no-display">
                    <i class="fa fa-remove-sign"></i> You have some form errors. Please check below.
                </div>
                                    <fieldset>
                    <div class="form-group">
                        <span class="input-icon">
                            <input type="text" class="form-control" name="username" placeholder="Username">
                            <i class="fa fa-user"></i> </span>
                    </div>
                    <div class="form-group form-actions">
                        <span class="input-icon">
                            <input type="password" class="form-control password" name="password" placeholder="Password">
                            <i class="fa fa-lock"></i>
                            <a class="forgot" href="forgot.php">
                                I forgot my password
                            </a> </span>
                    </div>
                    <div class="form-group">
                    <img src="captcha/captcha.php" alt="captcha" />
                        <span class="input-icon" style="width:200px; float: right;">
                            <input type="text" class="form-control" name="captcha">
                            <i class="fa fa-key"></i> </span>
                    </div>
                    <div class="form-actions" ><div class="slideExpandUp">
                        <label for="remember" class="checkbox-inline">
                            <input type="checkbox" class="grey remember" id="remember" name="remember">
                            Keep me signed in
                        </label>
                        <button type="submit" class="btn btn-bricky pull-right" name="submit">
                            Login <i class="fa fa-arrow-circle-right"></i>
                        </button></div>
                    </div>
                    <div class="new-account">
                        Don't have an account yet?
                        <a href="register.php" class="register">
                            Create an account
                        </a>
                    </div>
                </fieldset>
            </form>

登录.js

var Login = function () {
    var runSetDefaultValidation = function () {
        $.validator.setDefaults({
            errorElement: "span", // contain the error msg in a small tag
            errorClass: 'help-block',
            errorPlacement: function (error, element) { // render error placement for each input type
                if (element.attr("type") == "radio" || element.attr("type") == "checkbox") { // for chosen elements, need to insert the error after the chosen container
                    error.insertAfter($(element).closest('.form-group').children('div').children().last());
                } else if (element.attr("name") == "card_expiry_mm" || element.attr("name") == "card_expiry_yyyy") {
                    error.appendTo($(element).closest('.form-group').children('div'));
                } else {
                    error.insertAfter(element);
                    // for other inputs, just perform default behavior
                }
            },
            ignore: ':hidden',
            highlight: function (element) {
                $(element).closest('.help-block').removeClass('valid');
                // display OK icon
                $(element).closest('.form-group').removeClass('has-success').addClass('has-error').find('.symbol').removeClass('ok').addClass('required');
                // add the Bootstrap error class to the control group
            },
            unhighlight: function (element) { // revert the change done by hightlight
                $(element).closest('.form-group').removeClass('has-error');
                // set error class to the control group
            },
            success: function (label, element) {
                label.addClass('help-block valid');
                // mark the current input as valid and display OK icon
                $(element).closest('.form-group').removeClass('has-error');
            },
            highlight: function (element) {
                $(element).closest('.help-block').removeClass('valid');
                // display OK icon
                $(element).closest('.form-group').addClass('has-error');
                // add the Bootstrap error class to the control group
            },
            unhighlight: function (element) { // revert the change done by hightlight
                $(element).closest('.form-group').removeClass('has-error');
                // set error class to the control group
            }
        });
    };
    var runLoginValidator = function () {
        var form = $('.form-login');
        var errorHandler = $('.errorHandler', form);
        form.validate({
            rules: {
                username: {
                    minlength: 2,
                    required: true
                },
                password: {
                    minlength: 6,
                    required: true
                }
            },
            submitHandler: function (form) {
                errorHandler.hide();
                form.submit();
            },
            invalidHandler: function (event, validator) { //display error alert on form submit
                errorHandler.show();
            }
        });
    };
    return {
        //main function to initiate template pages
        init: function () {
            runSetDefaultValidation();
            runLoginValidator();
        }
    };
}();

编辑：修复标题

PhantomJS 日志文件输出，根据请求：

PhantomJS is launching GhostDriver...
[INFO  - 2015-01-27T16:58:04.367Z] GhostDriver - Main - running on port 48152
[INFO  - 2015-01-27T16:58:05.366Z] Session [a9641420-a645-11e4-95fd-c78c9ec356b6] - page.settings - {"XSSAuditingEnabled":false,"javascriptCanCloseWindows":true,"javascriptCanOpenWindows":true,"javascriptEnabled":true,"loadImages":true,"localToRemoteUrlAccessEnabled":false,"userAgent":"Mozilla/5.0 (Windows NT 5.1; rv:31.0) Gecko/20100101 Firefox/31.0","webSecurityEnabled":true}
[INFO  - 2015-01-27T16:58:05.366Z] Session [a9641420-a645-11e4-95fd-c78c9ec356b6] - page.customHeaders:  - {}
[INFO  - 2015-01-27T16:58:05.366Z] Session [a9641420-a645-11e4-95fd-c78c9ec356b6] - Session.negotiatedCapabilities - {"browserName":"phantomjs","version":"1.9.8","driverName":"ghostdriver","driverVersion":"1.1.0","platform":"linux-unknown-64bit","javascriptEnabled":true,"takesScreenshot":true,"handlesAlerts":false,"databaseEnabled":false,"locationContextEnabled":false,"applicationCacheEnabled":false,"browserConnectionEnabled":false,"cssSelectorsEnabled":true,"webStorageEnabled":false,"rotatable":false,"acceptSslCerts":false,"nativeEvents":true,"proxy":{"proxyType":"direct"},"phantomjs.page.settings.userAgent":"Mozilla/5.0 (Windows NT 5.1; rv:31.0) Gecko/20100101 Firefox/31.0"}
[INFO  - 2015-01-27T16:58:05.366Z] SessionManagerReqHand - _postNewSessionCommand - New Session Created: a9641420-a645-11e4-95fd-c78c9ec356b6
[ERROR - 2015-01-27T16:59:08.083Z] WebElementLocator - _handleLocateCommand - Element(s) NOT Found: GAVE UP. Search Stop Time: 1422377948079

最后的ERROR不是我问题的一部分，而更像是这里的书挡。当抓取算法查找应该在登录后显示的页面上的链接时，就会发生这种情况。由于我们没有成功提交登录表单，因此该链接自然不存在。