设置selenium Grid：
我能够在命令提示符下使用以下命令设置网格（hub＆amp; node），然后能够启动浏览器并成功执行测试。
java -jar selenium-server-standalone-3.4.0.jar -role hub
java -jar selenium-server-standalone-3.4.0.jar -role webdriver -hub "http://localhost:4444/grid/register" -port 5566
当尝试通过脚本设置selenium网格时，我能够成功设置集线器和节点，但无法启动浏览器。
请帮助解决问题。
请在下面找到代码和控制台：
package config.HubNode;
import java.net.MalformedURLException;
import java.net.URL;
import org.openqa.grid.common.RegistrationRequest;
import org.openqa.grid.internal.utils.SelfRegisteringRemote;
import org.openqa.grid.internal.utils.configuration.GridHubConfiguration;
import org.openqa.grid.internal.utils.configuration.GridNodeConfiguration;
import org.openqa.grid.web.Hub;
import org.openqa.selenium.Platform;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;
public class HubNodeConfig {
public static void main(String[] args) throws Exception {
HubNodeConfig objHubNodeConfig = new HubNodeConfig();
objHubNodeConfig.HubConfig();
System.out.println("Hub Configured Successfully");
objHubNodeConfig.NodeConfig();
System.out.println("Node Configured to Hub Successfully");
objHubNodeConfig.InvokeBrowser();
}
public void HubConfig() throws Exception
{
GridHubConfiguration gridHubConfig = new GridHubConfiguration();
gridHubConfig.role = "hub";
gridHubConfig.host = "localhost";
gridHubConfig.port = 4444;
Hub myHub = new Hub(gridHubConfig);
myHub.start();
}
public void NodeConfig()
{
GridNodeConfiguration gridNodeConfig = new GridNodeConfiguration();
gridNodeConfig.hub = "http://localhost:4444/grid/register"
gridNodeConfig.host = "192.xxx.xx.xx" //my ip address
gridNodeConfig.port = 5566;
gridNodeConfig.role = "webdriver";
RegistrationRequest req = new RegistrationRequest(gridNodeConfig);
req.getConfiguration();
req.validate();
RegistrationRequest.build(gridNodeConfig);
SelfRegisteringRemote remote = new SelfRegisteringRemote(req);
remote.startRegistrationProcess();
}
public void InvokeBrowser() throws MalformedURLException
{
System.setProperty("webdriver.chrome.driver", "E:\\chromedriver.exe");
DesiredCapabilities capability = DesiredCapabilities.chrome();
capability.setBrowserName("chrome");
capability.setPlatform(Platform.WIN10);
WebDriver driver = new RemoteWebDriver(new URL("http://"+gridNodeConfig.host+":"+gridNodeConfig.port+"/wd/hub"), capability);
System.out.println("Driver Launched Successfully");
driver.get("https://google.com");
}
}
控制台错误消息和网格的屏幕截图：
2017-07-20 23:57:17.135:INFO::main: Logging initialized @2576ms to org.seleniumhq.jetty9.util.log.StdErrLog
Jul 20, 2017 11:57:17 PM org.openqa.grid.web.Hub initServer
INFO: Will listen on 4444
2017-07-20 23:57:17.509:INFO:osjs.Server:main: jetty-9.4.3.v20170317
2017-07-20 23:57:17.569:INFO:osjs.session:main: DefaultSessionIdManager workerName=node0
2017-07-20 23:57:17.570:INFO:osjs.session:main: No SessionScavenger set, using defaults
2017-07-20 23:57:17.573:INFO:osjs.session:main: Scavenging every 600000ms
2017-07-20 23:57:17.592:INFO:osjsh.ContextHandler:main: Started o.s.j.s.ServletContextHandler@1a1d6a08{/,null,AVAILABLE}
2017-07-20 23:57:17.804:INFO:osjs.AbstractConnector:main: Started ServerConnector@77f99a05{HTTP/1.1,[http/1.1]}{0.0.0.0:4444}
2017-07-20 23:57:17.804:INFO:osjs.Server:main: Started @3245ms
Hub Configured Successfully
Jul 20, 2017 11:57:19 PM org.openqa.grid.internal.utils.SelfRegisteringRemote$1 run
INFO: Starting auto registration thread. Will try to register every 5000 ms.
Jul 20, 2017 11:57:19 PM org.openqa.grid.internal.utils.SelfRegisteringRemote registerToHub
INFO: Registering the node to the hub: http: //localhost:4444/grid/register
Node Configured to Hub Successfully
Jul 20, 2017 11:57:19 PM org.openqa.grid.internal.Registry add
INFO: Registered a node http: //192.xxx.xx.xx:5566
Jul 20, 2017 11:57:19 PM org.openqa.grid.internal.utils.SelfRegisteringRemote registerToHub
INFO: The node is registered to the hub and ready to use
Exception in thread "main"
org.openqa.selenium.remote.UnreachableBrowserException: Could not start a new session. Possible causes are invalid address of the remote server or browser start-up failure.
Build info: version: '3.4.0', revision: 'unknown', time: 'unknown'
System info: host: 'KRISH', ip: '192.xxx.xx.xx', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_131'
Driver info: driver.version: RemoteWebDriver
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:658)
at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:250)
at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:236)
at org.openqa.selenium.remote.RemoteWebDriver.(RemoteWebDriver.java:137)
at org.openqa.selenium.remote.RemoteWebDriver.(RemoteWebDriver.java:174)
at config.HubNode.HubNodeConfig.InvokeBrowser(HubNodeConfig.java:71)
at config.HubNode.HubNodeConfig.main(HubNodeConfig.java:29)
Caused by: org.apache.http.conn.HttpHostConnectException: Connect to 192.xxx.xx.xx:5566 [/192.xxx.xx.xx] failed: Connection refused: connect
at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:159)
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:359)
at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:381)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:237)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:185)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:111)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:72)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)
at org.openqa.selenium.remote.internal.ApacheHttpClient.fallBackExecute(ApacheHttpClient.java:139)
at org.openqa.selenium.remote.internal.ApacheHttpClient.execute(ApacheHttpClient.java:87)
at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:343)
at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:159)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:142)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:637)
... 6 more
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75)
at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142)
... 21 more
>Jul 21, 2017 12:15:30 AM org.openqa.grid.selenium.proxy.DefaultRemoteProxy onEvent
INFO: Marking the node http: //192.xx.xx.xx:5566 as down: cannot reach the node for 2 tries
Jul 21, 2017 12:16:30 AM org.openqa.grid.selenium.proxy.DefaultRemoteProxy onEvent
INFO: Unregistering the node http: //192.xx.xx.xx:5566 because it's been down for 60077 milliseconds
Jul 21, 2017 12:16:30 AM org.openqa.grid.internal.Registry removeIfPresent
WARNING: Cleaning up stale test sessions on the unregistered node http: //192.xx.xx.xx:5566
Jul 21, 2017 12:16:34 AM org.openqa.grid.internal.utils.SelfRegisteringRemote registerToHub
INFO: Registering the node to the hub: http: //localhost:4444/grid/register
Jul 21, 2017 12:16:34 AM org.openqa.grid.internal.Registry add
INFO: Registered a node http: //192.xx.xx.xx:5566
Jul 21, 2017 12:16:34 AM org.openqa.grid.internal.utils.SelfRegisteringRemote registerToHub
INFO: The node is registered to the hub and ready to use
Jul 21, 2017 12:16:46 AM org.openqa.grid.selenium.proxy.DefaultRemoteProxy onEvent
INFO: Marking the node http: //192.xx.xx.xx:5566 as down: cannot reach the node for 2 tries
答案 0 :(得分：3)
启动节点的代码存在问题。请修改如下。
方法nodeConfig()不会在服务器中注入SelfRegisteringRemote。
以下是它的外观：
RegistrationRequest req = RegistrationRequest.build(gridNodeConfig);
SelfRegisteringRemote remote = new SelfRegisteringRemote(req);
remote.setRemoteServer(new SeleniumServer(gridNodeConfig));
remote.startRemoteServer();
remote.startRegistrationProcess();
另请将您的RemoteWebDriver实例代码更改为
WebDriver driver = new RemoteWebDriver(new URL("http://" + gridHubConfig.host + ":" + gridHubConfig.port + "/wd/hub"), capability);
注意我们正在连接gridHubConfig主机及其端口而不是节点的端口（这是您的代码正在做的事情）。
一旦解决了这些问题，您的代码应该可以正常工作，并且您应该看到通过代码分离的嵌入式网格。