我正在使用需要多线程的Selenium编写Web抓取工具
// selenium imports from org.openqa omitted
public class wpn
{
private String sessionId = "";
private String windowHandle = "";
private WebDriver driver;
public wpn (String id)
{
sessionId = id;
}
public void openDriver (String driverType)
{
if (driverType.equals ("ie"))
{
DesiredCapabilities capabilities = DesiredCapabilities.internetExplorer();
capabilities.setCapability(InternetExplorerDriver.INTRODUCE_FLAKINESS_BY_IGNORING_SECURITY_DOMAINS, true);
capabilities.setCapability(InternetExplorerDriver.IE_ENSURE_CLEAN_SESSION, true);
capabilities.setCapability("requireWindowFocus", true);
System.setProperty("webdriver.ie.driver", "c:\\temp\\ieDriver.exe");
driver = new InternetExplorerDriver(capabilities);
driver.manage().window().maximize();
}
else if (driverType.equals ("chrome"))
{
DesiredCapabilities capabilities = DesiredCapabilities.chrome();
capabilities.setCapability(CapabilityType.ForSeleniumServer.ENSURING_CLEAN_SESSION, true);
System.setProperty("webdriver.chrome.driver", "c:\\temp\\chromedriver.exe");
driver = new ChromeDriver (capabilities);
driver.manage().window().maximize();
}
else if (driverType.equals ("phantom"))
{
File file = new File("c:\\temp\\phantomJSDdriver.exe");
System.setProperty("phantomjs.binary.path", file.getAbsolutePath ());
DesiredCapabilities capabilities = new DesiredCapabilities();
capabilities.setJavascriptEnabled(true);
capabilities.setCapability(PhantomJSDriverService.PHANTOMJS_CLI_ARGS, new String[] {"--web-security=no", "--ignore-ssl-errors=yes"});
driver = new PhantomJSDriver(capabilities);
Dimension dimension = new Dimension (1280, 1024);
driver.manage().window().setSize (dimension);
}
else if (driverType.equals ("firefox"))
{
System.setProperty ("webdriver.gecko.driver", "c:\\temp\\geckodriver.exe");
FirefoxOptions options = new FirefoxOptions ();
options.setBinary (c:\\temp\\firefoxdriver.exe");
options.addArguments("--headless");
driver = new FirefoxDriver(options);
driver.manage().window().maximize();
}
else
{
System.println("unrecognised driver type " + driverType);
}
System.setProperty ("https.protocols", "TLSv1.2");
}
public void login (String loginUrl)
{
driver.get(loginUrl);
windowHandle = driver.getWindowHandle ();
}
public void getInfo (String infoUrl)
{
try
{
String wh = driver.getWindowHandle ();
if (!wh.matches(windowHandle))
{
driver.switchTo(windowHandle);
}
driver.get(infoUrl);
}
catch (Exception e)
{
System.out.println (e.getMessage ());
}
}
}
int main (String[] args)
{
wpn session_1 = new wpn ("101");
wpn session_2 = new wpn ("202");
String driverType = args[0];
session_1.openDriver (driverType);
session_2.openDriver (driverType);
session_1.login ("http://myService.com/login");
session_2.login ("http://myService.com/login");
session_2.info ("http://myService.com/info");
// proceeds OK, because window handles match
session_1.info ("http://myService.com/info");
// produces failure when attempting to switch to session_1's window
}
使用ie驱动程序时，错误类似于：
No window found
Build info: version: '3.5.0', revision: '8def36e068', time: '2017-08-10T23:00:22.093Z'
System info: host: 'HUWG', ip: '192.168.0.215', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.8.0_144'
Driver info: org.openqa.selenium.ie.InternetExplorerDriver
Capabilities [{acceptInsecureCerts=false, browserVersion=11, se:ieOptions={nativeEvents=true, browserAttachTimeout=0.0, ie.ensureCleanSession=true, elementScrollBehavior=0.0, enablePersistentHover=false, ie.browserCommandLineSwitches=, ie.forceCreateProcessApi=false, requireWindowFocus=true, initialBrowserUrl=http://localhost:40976/, ignoreZoomSetting=false, ie.fileUploadDialogTimeout=3000.0, ignoreProtectedModeSettings=true}, browserName=internet explorer, pageLoadStrategy=normal, unhandledPromptBehavior=dismiss, javascriptEnabled=true, platformName=windows, setWindowRect=true, platform=ANY}]
Session ID: cd72bba0-f105-43a8-a234-cbb494c19d8c
使用Chrome时，类似于：
no such window
(Session info: chrome=67.0.3396.99)
(Driver info: chromedriver=2.40.565498
(ea082db3280dd6843ebfb08a625e3eb905c4f5ab),platform=Windows NT 6.1.7601 SP1 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 0 milliseconds
Build info: version: '3.13.0', revision: '2f0d292', time: '2018-06-25T15:32:19.891Z'
System info: host: 'HUWG', ip: '192.168.0.215', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.8.0_144'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities {acceptInsecureCerts: false, acceptSslCerts: false, applicationCacheEnabled: false, browserConnectionEnabled: false, browserName: chrome, chrome: {chromedriverVersion: 2.40.565498 (ea082db3280dd6..., userDataDir: C:\Users\gallonh\AppData\Lo...}, cssSelectorsEnabled: true, databaseEnabled: false, handlesAlerts: true, hasTouchScreen: false, javascriptEnabled: true, locationContextEnabled: true, mobileEmulationEnabled: false, nativeEvents: true, networkConnectionEnabled: false, pageLoadStrategy: normal, platform: XP, platformName: XP, rotatable: false, setWindowRect: true, takesHeapSnapshot: true, takesScreenshot: true, unexpectedAlertBehaviour: , unhandledPromptBehavior: , version: 67.0.3396.99, webStorageEnabled: true}
Session ID: c4c74d5258c723a0a09dbbf7284b1c48
使用phantomJS驱动程序，它类似于：
no such window
(Session info: chrome=67.0.3396.99)
(Driver info: chromedriver=2.40.565498
(ea082db3280dd6843ebfb08a625e3eb905c4f5ab),platform=Windows NT 6.1.7601 SP1 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 0 milliseconds
Build info: version: '3.13.0', revision: '2f0d292', time: '2018-06-25T15:32:19.891Z'
System info: host: 'HUWG', ip: '192.168.0.215', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.8.0_144'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities {acceptInsecureCerts: false, acceptSslCerts: false, applicationCacheEnabled: false, browserConnectionEnabled: false, browserName: chrome, chrome: {chromedriverVersion: 2.40.565498 (ea082db3280dd6..., userDataDir: C:\Users\gallonh\AppData\Lo...}, cssSelectorsEnabled: true, databaseEnabled: false, handlesAlerts: true, hasTouchScreen: false, javascriptEnabled: true, locationContextEnabled: true, mobileEmulationEnabled: false, nativeEvents: true, networkConnectionEnabled: false, pageLoadStrategy: normal, platform: XP, platformName: XP, rotatable: false, setWindowRect: true, takesHeapSnapshot: true, takesScreenshot: true, unexpectedAlertBehaviour: , unhandledPromptBehavior: , version: 67.0.3396.99, webStorageEnabled: true}
Session ID: c4c74d5258c723a0a09dbbf7284b1c48
使用Firefox驱动程序，Selenium打开的每个窗口的句柄为“ 4294967297”，因此永远不会切换窗口。
对于IE和phantomJS驱动程序，我正在使用selenium-server-standalone-3.5.0.jar构建应用程序。对于chrome和firefox驱动程序，我正在使用selenium-server-standalon-3.13.0.jar构建应用程序。
答案 0 :(得分：0)
您使用的是正则表达式匹配器。 driver.getWindowHandle返回一个字符串，您应该使用equals检查是否相等。另外，由于您不在session.login(...)之后和session.info(...)之前切换窗口，因此检查驱动程序是否指向同一窗口是多余的。
您已经初始化了两个独立的驱动程序实例，这些实例引用了它们自己的浏览器窗口。驱动它们自己的浏览器会话的驱动程序实例之间没有“串扰”。
如果您仍要检查是否仍指向同一窗口，请使用wh.equals(windowHandle)。
答案 1 :(得分：0)
您已使用以下 WebDrivervariants 提供了错误堆栈跟踪：
首先值得一提的是，不同的 Browser Clients 会以不同的方式呈现HTML DOM。如果您可以将问题范围缩小到特定的 WebDriver / Browser Client 变体，则调试问题可能会容易得多。
分析所有三个错误跟踪日志块，看来问题出在切换窗口/选项卡，错误显示为：
No window found （ InternetExplorerDriver ）no such window （ chromedriver = 2.40 ）no such window （ PhantomJSDriver ）但是，您的主要问题似乎是所使用的二进制版本之间的不兼容性：
配置您的测试平台，以使用最新的GA二进制文件执行您的 Test Suite ：