javascript - Selenium 与 PhantomJS : Form being validated but not submitted

Question

我在通过 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为空等)，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，就会有警报通知。如果我提交有效的表格，则不会发生任何事情。页面上的 JS 应该验证表单，然后在单击提交按钮时提交它。

一些排除情况。我在提交按钮(一个按钮元素)上尝试了 .click() 和 .submit() 。我还在表单本身以及表单中的任意元素(如密码)上尝试过 .submit() ，这是 Selenium 允许的。

事实上，如果我使用 Firefox 而不是 PhantomJS，相同的代码可以正常工作。不过，我不想切换，因为 Firefox 速度较慢，并且会给我带来不可预测的连接问题。

我的规范: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。

代码如下。首先是我的 Selenium 代码。然后是表单的 html。然后是该网站的login.js 源代码。我认为js中发生的情况是，由于某种原因，.validate函数中的invalidHandler正在运行，但submitHandler没有运行？预先感谢您的关注。

# 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”是一个继承自Webdriver.PhantomJS类的驱动程序对象。现在是 html 表单:

            <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:修正标题

PhantomJS 日志文件输出，按请求:

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不是我的问题的一部分，但这里更像是一个书挡。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。

Answer 1

我不太确定我的哪些更改导致了突破，但我可以说我添加了以下代码。编辑:其中只有两个是新的。删除了一个。

    webdriver.DesiredCapabilities.PHANTOMJS["phantomjs.page.settings.localToRemoteUrlAccessEnabled"] = True
    webdriver.DesiredCapabilities.PHANTOMJS["phantomjs.page.settings.browserConnectionEnabled"] = True

我提交了表单本身，而不是单击按钮(在更改上述配置之前，我之前也尝试过此操作)。

        formEl = self.find_element_by_css_selector("form[name='login']")
        formEl.submit()