PhantomJSDriver 找到 Element 但仍未定义

Question

我在使用 PhantomJSDriver 和 Java 时遇到了一个奇怪的问题，
我正在尝试点击这样的链接：

WebElement loginButton =  wait.until(
                ExpectedConditions.elementToBeClickable(By.xpath("//a[@ui-sref='login']"))
                );
        LOG.debug("Login Button Found :  ["+loginButton.getAttribute("href")+"]" );
        loginButton.click();

使用 Crome Driver 我没有任何问题，但是使用 phantomsJS（2.0.0（或 1.9.7/1.9.8）和 GhostDriver 1.2.0 我遇到了这种错误：

[DEBUG - 2015-05-04T09:46:03.610Z] WebElementLocator - _handleLocateCommand - Element(s) Search Start Time: 1430732763610
[DEBUG - 2015-05-04T09:46:03.612Z] WebElementLocator - _find.locator - {"using":"xpath","value":"//a[@ui-sref='login']"}
[DEBUG - 2015-05-04T09:46:03.624Z] WebElementLocator - _locateElement.locator - {"using":"xpath","value":"//a[@ui-sref='login']"}
[DEBUG - 2015-05-04T09:46:03.624Z] WebElementLocator - _locateElement.findElementResult - {"status":0,"value":{"ELEMENT":":wdc:1430732763623"}}
[DEBUG - 2015-05-04T09:46:03.624Z] WebElementLocator - _handleLocateCommand.elements - {"status":0,"value":{"ELEMENT":":wdc:1430732763623"}}
[DEBUG - 2015-05-04T09:46:03.624Z] WebElementLocator - _handleLocateCommand.rootElement - BODY
[DEBUG - 2015-05-04T09:46:03.625Z] WebElementLocator - _handleLocateCommand - Element(s) Found. Search Stop Time: 1430732768610

还有错误信息：

org.openqa.selenium.WebDriverException: {"errorMessage":"undefined is not an object (evaluating '(y(a)?y(a).parentWindow||y(a).defaultView:window).getComputedStyle(a,null).MozTransform.match')","request":{"headers":{"Accept":"application/json, image/png","Cache-Control":"no-cache","Connection":"Keep-Alive","Host":"localhost:7356"},"httpVersion":"1.1","method":"GET","url":"/displayed","urlParsed":{"anchor":"","query":"","file":"displayed","directory":"/","path":"/displayed","relative":"/displayed","port":"","host":"","password":"","user":"","userInfo":"","authority":"","protocol":"","source":"/displayed","queryKey":{},"chunks":["displayed"]},"urlOriginal":"/session/5f287dd0-f242-11e4-9753-1726c362b9fc/element/%3Awdc%3A1430732763623/displayed"}}
Command duration or timeout: 229 milliseconds

我之前添加了显式等待等，但它什么也没做...... 如果我尝试使用此代码，那么奇怪的部分：

d.findElement(By.xpath("//a[@ui-sref='login']"));
LOG.debug("Login Button Found : ["+loginButton.getAttribute("href")+"]" );
loginButton.click();

我可以访问 href 属性！
但是 click() 方法失败

[编辑] 第一个 PhanstomJS 配置如下所示：

// Change "User-Agent" via page-object capabilities
sCaps.setCapability(PhantomJSDriverService.PHANTOMJS_PAGE_SETTINGS_PREFIX + "userAgent", "My User Agent - Chrome");
//  Disable "web-security", enable all possible "ssl-protocols" and "ignore-ssl-errors" for PhantomJSDriver
sCaps.setCapability(PhantomJSDriverService.PHANTOMJS_CLI_ARGS, new String[] {
                "--web-security=false",
                "--ssl-protocol=any",
                "--ignore-ssl-errors=true",
                "--webdriver-loglevel=DEBUG"
            });


 // Fetch configuration parameters
 // "phantomjs_exec_path"
 if (sConfig.getProperty("phantomjs_exec_path") != null) {
     sCaps.setCapability(PhantomJSDriverService.PHANTOMJS_EXECUTABLE_PATH_PROPERTY, sConfig.getProperty("phantomjs_exec_path"));
} else {
    throw new IOException(String.format("Property '%s' not set!", PhantomJSDriverService.PHANTOMJS_EXECUTABLE_PATH_PROPERTY));
     }
}

感谢您的帮助！

Answer 1

您可以为 PhantomJS 尝试以下配置：

DesiredCapabilities capabilities;
capabilities = new DesiredCapabilities();       
capabilities.setJavascriptEnabled(true);
capabilities.setCapability(PhantomJSDriverService.PHANTOMJS_EXECUTABLE_PATH_PROPERTY, "drivers/phantomjs.exe");
capabilities.setCapability(PhantomJSDriverService.PHANTOMJS_PAGE_SETTINGS_PREFIX,"Y");
capabilities.setCapability("phantomjs.page.settings.userAgent", "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:16.0) Gecko/20121026 Firefox/16.0");

//intialize driver and set capabilties

driver = new PhantomJSDriver(capabilities);

另外，尝试以这种方式查找元素：

wait.until(ExpectedConditions.presenceOfElementLocated(byExpression));