集线器启动命令:
java -jar selenium-server-standalone-3.11.0.jar -role hub
节点启动命令:
java -Dwebdriver.chrome.driver=/Users/alina/Selenium/chromedriver.exe -jar selenium-server-standalone-3.11.0.jar -role webdriver -hub http://192.168.100.4:4444/grid/register/
环境详细信息(根据评论更新):Selenium 3.11.0、Chrome 66、ChromeDriver 2.38
Environment Details (updated from comments) : Selenium 3.11.0, Chrome 66, ChromeDriver 2.38
import java.net.MalformedURLException;
import java.net.URL;
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.By;
import org.openqa.selenium.Platform;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;
public class TestGrid {
static WebDriver driver;
static String nodeUrl;
public static void main(String[] args)
{
try {
nodeUrl = "http://192.168.100.4:4444/wd/hub";
DesiredCapabilities capabilities = DesiredCapabilities.chrome();
capabilities.setPlatform(Platform.SIERRA);
driver = new RemoteWebDriver(new URL(nodeUrl), capabilities);
driver.manage().deleteAllCookies();
driver.manage().window().maximize();
driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
driver.manage().timeouts().pageLoadTimeout(45, TimeUnit.SECONDS);
driver.get("http://www.amazon.com");
driver.findElement(By.linkText("Today's Deals")).click();
} catch (MalformedURLException e) {
e.printStackTrace();
}
}
当我尝试运行它时,我得到了这个错误:
When I try to run it, I get this error:
Apr 24, 2018 4:14:34 PM org.openqa.selenium.remote.DesiredCapabilities chrome
INFO: Using `new ChromeOptions()` is preferred to `DesiredCapabilities.chrome()`
Exception in thread "main" org.openqa.selenium.WebDriverException: Error forwarding the new session cannot find : Capabilities {browserName: chrome, platform: macOS 10.12, version: }
Command duration or timeout: 90 milliseconds
Build info: version: '3.11.0', revision: 'e59cfb3', time: '2018-03-11T20:33:08.638Z'
System info: host: 'Alinas-MacBook-Pro.local', ip: '2a02:2f0e:1a0:5d9:95f0:9fb4:dfea:28c7%en0', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.13.4', java.version: '10.0.1'
Driver info: driver.version: RemoteWebDriver
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:488)
at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:214)
at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:166)
at org.openqa.selenium.remote.JsonWireProtocolResponse.lambda$new$0(JsonWireProtocolResponse.java:53)
at org.openqa.selenium.remote.JsonWireProtocolResponse.lambda$getResponseFunction$2(JsonWireProtocolResponse.java:91)
at org.openqa.selenium.remote.ProtocolHandshake.lambda$createSession$0(ProtocolHandshake.java:123)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
at java.base/java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:958)
at java.base/java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:127)
at java.base/java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:502)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:488)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at java.base/java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:150)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:543)
at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:126)
at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:73)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:136)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:545)
at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:209)
at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:132)
at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:145)
at grid.TestGrid.main(TestGrid.java:26)
Caused by: org.openqa.grid.common.exception.GridException: Error forwarding the new session cannot find : Capabilities {browserName: chrome, platform: macOS 10.12, version: }
at org.openqa.grid.web.servlet.handler.RequestHandler.process(RequestHandler.java:118)
at org.openqa.grid.web.servlet.DriverServlet.process(DriverServlet.java:86)
at org.openqa.grid.web.servlet.DriverServlet.doPost(DriverServlet.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.seleniumhq.jetty9.servlet.ServletHolder.handle(ServletHolder.java:860)
at org.seleniumhq.jetty9.servlet.ServletHandler.doHandle(ServletHandler.java:535)
at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)
at org.seleniumhq.jetty9.server.session.SessionHandler.doHandle(SessionHandler.java:1595)
at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)
at org.seleniumhq.jetty9.server.handler.ContextHandler.doHandle(ContextHandler.java:1253)
at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168)
at org.seleniumhq.jetty9.servlet.ServletHandler.doScope(ServletHandler.java:473)
at org.seleniumhq.jetty9.server.session.SessionHandler.doScope(SessionHandler.java:1564)
at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166)
at org.seleniumhq.jetty9.server.handler.ContextHandler.doScope(ContextHandler.java:1155)
at org.seleniumhq.jetty9.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.seleniumhq.jetty9.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.seleniumhq.jetty9.server.Server.handle(Server.java:530)
at org.seleniumhq.jetty9.server.HttpChannel.handle(HttpChannel.java:347)
at org.seleniumhq.jetty9.server.HttpConnection.onFillable(HttpConnection.java:256)
at org.seleniumhq.jetty9.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279)
at org.seleniumhq.jetty9.io.FillInterest.fillable(FillInterest.java:102)
at org.seleniumhq.jetty9.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124)
at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:247)
at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
at org.seleniumhq.jetty9.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:382)
at org.seleniumhq.jetty9.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
at org.seleniumhq.jetty9.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)
at java.lang.Thread.run(Thread.java:844)
有谁知道我做错了什么?
Does anyone know what am I doing wrong?
这个错误信息...
Exception in thread "main" org.openqa.selenium.WebDriverException: Error forwarding the new session cannot find : Capabilities {browserName: chrome, platform: macOS 10.12, version: }
...暗示 ChromeDriver 无法启动与 WebClient 的活动连接,即 Chrome 浏览器.
...implies that the ChromeDriver wasn't able to initiate an active connection with the WebClient i.e Chrome browser.
您的主要问题是您使用的二进制文件之间的版本兼容性,如下所示:
Your main issue is the version compatibility between the binaries you are using as follows :
支持 Chrome v63-65
支持 Chrome v65-67
所以 ChromeDriver 版本 (v2.36) 和 Chrome 浏览器 版本 (v66.0)
So there is a clear mismatch between the ChromeDriver version (v2.36) and the Chrome Browser version (v66.0)
@Test
.@Test
.根据您在使用 Selenium 3.x 时的问题更新,您需要将关键字 webdriver 替换为 node 并删除扩展名(WebDriver 变体的 .exe
) 如下:
As per your question update while working with Selenium 3.x you need to replace the keyword webdriver with node and remove the extension (.exe
) of the WebDriver variant as follows :
Mac OS X:
java -Dwebdriver.chrome.driver=/Users/alina/Selenium/chromedriver -jar selenium-server-standalone-3.11.0.jar -role node -hub http://192.168.100.4:4444/grid/register/
由于您仍然面临同样的错误,让我们解决错误:
As you are still facing the same error let us address the error :
Using `new ChromeOptions()` is preferred to `DesiredCapabilities.chrome()`
根据错误消息,您需要使用 merge()
方法来自 MutableCapabilities 类合并DesiredCapabilities 类型的对象转换为 ChromeOptions 类型的对象,并通过传递 ChromeOptions 对象来启动 RemoteWebDriver 和 WebClient 实例如下:
As per the error message you need to use the merge()
method from MutableCapabilities Class to merge the DesiredCapabilities type of object into ChromeOptions type object and initiate the RemoteWebDriver and WebClient instance by passing the ChromeOptions object as follows :
System.setProperty("webdriver.chrome.driver", "/Users/username/chromedriver");
nodeUrl = "http://192.168.100.4:4444/wd/hub";
DesiredCapabilities capabilities = DesiredCapabilities.chrome();
capabilities.setPlatform(Platform.SIERRA);
ChromeOptions options = new ChromeOptions();
options.merge(capabilities);
driver = new RemoteWebDriver(new URL(nodeUrl), options);
driver.get("http://www.amazon.com");
PS:作为参考,您可以查看 mutablecapabilities
中的讨论强>标签
PS : As a reference you can have a look at the discussions in mutablecapabilities
tag
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