appium grid org.openqa.selenium.webdriverexception:转发新会话时出错，找不到

oug3syen  于 2021-07-06  发布在  Java
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appium（版本1.18.3）网格在执行基于chrome的web应用测试时抛出错误。
chrome.java类

package com.example.appium;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.concurrent.TimeUnit;
import io.appium.java_client.AppiumDriver;
import io.appium.java_client.remote.MobileCapabilityType;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.remote.CapabilityType;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;
import io.appium.java_client.MobileElement;
import io.appium.java_client.android.AndroidDriver;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Optional;
import org.testng.annotations.Parameters;
import org.testng.annotations.Test;

public class Chrome {
    WebDriver driver;
    DesiredCapabilities cap = new DesiredCapabilities();
    @BeforeClass
    public void init() throws MalformedURLException {
        cap.setCapability("deviceName", "ZH33L2Z6KL");
        cap.setCapability("platformName", "Android");
        cap.setCapability(CapabilityType.BROWSER_NAME, "Chrome");
        cap.setCapability("chromeDriverPort", "8201");
        cap.setCapability("chromedriverExecutable","C:\\chromedriver\\chromedriver.exe");
        cap.setCapability(CapabilityType.VERSION, "5.1");
    }

    @Test
    public void testApp() {
        try {
            driver = new RemoteWebDriver(new URL("http://127.0.0.1:4444/wd/hub"), cap);
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
        driver.get("https://www.amazon.com");
    }
}

testng xml文件：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="Regression" thread-count="2" parallel="tests" preserve-order="true" verbose="2">
    <test name="Real Device1">
        <classes>
            <class name="com.example.appium.Chrome"/>
        </classes>
    </test>
</suite>

使用以下命令调用appium selenium网格：
集线器：

java -jar selenium-server-standalone-3.141.59.jar -role hub

nodeconfig\u设备1.json：

{
  "capabilities": [
    {
      "browserName": "Chrome",
      "version": "6.0",
      "maxInstances": 10,      
      "deviceName": "ZH33L2Z6KL",
      "platformName": "ANDROID",
      "automationName":"UiAutomator2",
      "chromeDriverPort":"8201"
    }
  ],
  "configuration": {
    "cleanUpCycle": 2000,
    "timeout": 300000,
    "proxy": "org.openqa.grid.selenium.proxy.DefaultRemoteProxy",    
    "maxSession": 10,        
    "register": true,
    "registerCycle": 5000,
    "hubPort": 4444,
    "hubHost": "192.168.0.105",
    "hubProtocol":"http"
  }
}

使用以下命令调用node1：

appium --port 6001 --nodeconfig nodeconfig_device1.json

调用chrome apk时引发以下错误：

org.openqa.selenium.WebDriverException: Error forwarding the new session cannot find : Capabilities {browserName: Chrome, chromeDriverPort: 6001, chromedriverExecutable: C:\chromedriver\chromedrive..., deviceName: ZH33L2Z6KL, platformName: android, version: 5.1}
Command duration or timeout: 282 milliseconds
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    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$errorHandler$0(JsonWireProtocolResponse.java:54)
    at org.openqa.selenium.remote.HandshakeResponse.lambda$getResponseFunction$0(HandshakeResponse.java:30)
    at org.openqa.selenium.remote.ProtocolHandshake.lambda$createSession$0(ProtocolHandshake.java:126)
    at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
    at java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:958)
    at java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:126)
    at java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:499)
    at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:486)
    at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
    at java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:152)
    at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
    at java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:464)
    at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:128)
    at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:74)
    at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:136)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:552)
    at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:213)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:131)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:144)
    at com.example.appium.Chrome.testApp(Chrome.java:45)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:124)
    at org.testng.internal.Invoker.invokeMethod(Invoker.java:583)
    at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:719)
    at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:989)
    at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
    at org.testng.TestRunner.privateRun(TestRunner.java:648)
    at org.testng.TestRunner.run(TestRunner.java:505)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:455)
    at org.testng.SuiteRunner.access$000(SuiteRunner.java:40)
    at org.testng.SuiteRunner$SuiteWorker.run(SuiteRunner.java:489)
    at org.testng.internal.thread.ThreadUtil$1.call(ThreadUtil.java:52)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Caused by: org.openqa.selenium.WebDriverException: Error forwarding the new session cannot find : Capabilities {browserName: Chrome, chromeDriverPort: 6001, chromedriverExecutable: C:\chromedriver\chromedrive..., deviceName: ZH33L2Z6KL, platformName: android, version: 5.1}
Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:17:03'
System info: host: 'DESKTOP-E205GQ8', ip: '192.168.0.105', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_261'
Driver info: driver.version: unknown
    at org.openqa.grid.web.servlet.handler.RequestHandler.process(RequestHandler.java:118)
    at org.openqa.grid.web.servlet.DriverServlet.process(DriverServlet.java:85)
    at org.openqa.grid.web.servlet.DriverServlet.doPost(DriverServlet.java:69)
    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:865)
    at org.seleniumhq.jetty9.servlet.ServletHandler.doHandle(ServletHandler.java:535)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
    at org.seleniumhq.jetty9.security.SecurityHandler.handle(SecurityHandler.java:548)
    at org.seleniumhq.jetty9.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
    at org.seleniumhq.jetty9.server.session.SessionHandler.doHandle(SessionHandler.java:1595)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
    at org.seleniumhq.jetty9.server.handler.ContextHandler.doHandle(ContextHandler.java:1340)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
    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:201)
    at org.seleniumhq.jetty9.server.handler.ContextHandler.doScope(ContextHandler.java:1242)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
    at org.seleniumhq.jetty9.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.seleniumhq.jetty9.server.Server.handle(Server.java:503)
    at org.seleniumhq.jetty9.server.HttpChannel.handle(HttpChannel.java:364)
    at org.seleniumhq.jetty9.server.HttpConnection.onFillable(HttpConnection.java:260)
    at org.seleniumhq.jetty9.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
    at org.seleniumhq.jetty9.io.FillInterest.fillable(FillInterest.java:103)
    at org.seleniumhq.jetty9.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)
    at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
    at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
    at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
    at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)
    at org.seleniumhq.jetty9.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)
    at org.seleniumhq.jetty9.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
    at org.seleniumhq.jetty9.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
    at java.lang.Thread.run(Unknown Source)

注：
当调用appiumgui（版本1.18.3）时，该代码工作正常，ip地址设置为127.0.0.1，端口设置为4723。这次，驱动程序更改如下：

driver = new RemoteWebDriver(new URL("http://127.0.0.1:4723/wd/hub"), cap);

问题：
为什么appium grid没有在android设备中调用chrome应用程序？
为什么会抛出“org.openqa.selenium.webdriverexception:error forwarding the new session cannot find”错误，即使chrome应用程序和chrome驱动程序没有任何冲突？
是否需要其他设置？

Javaseleniumweb-applicationsGridappium

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