WebDriverException:未知错误:Runtime.executionContextCreated具有无效的“上下文":初始化Chrome浏览器时

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问题描述

我正在尝试开始使用硒，并且已经下载了chrome驱动程序并放入了我的类路径中.我只是想立即获得标题，以查看是否可以使用它.当前代码如下:

I'm trying to get started using selenium and have downloaded a chrome driver and put into my classpath. I'm just trying to get the title right now to see if I can get it to work. Code currently looks like this:

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;

public class Flows {

    public static void main(String[] args) {

        System.setProperty("webdriver.chrome.driver", "/Users/mn/Desktop/project/turv/src/main/chromedriver");
        WebDriver driver = new ChromeDriver();
        String baseUrl = "http://google.dk/";
        driver.get(baseUrl);
        System.out.println(driver.getTitle());
        driver.close();
    }
}

我希望输出的结果类似于"Google"，但是却收到此错误:

I expected my output to be something along the lines of "Google", but I get this error instead:

Connected to the target VM, address: '127.0.0.1:55299', transport: 'socket'
Starting ChromeDriver (v2.8.241036) on port 2571
[warn] kq_init: detected broken kqueue; not using.: Undefined error: 0
May 07, 2018 12:12:35 PM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Detected dialect: OSS
Disconnected from the target VM, address: '127.0.0.1:55299', transport: 'socket'
Exception in thread "main" org.openqa.selenium.WebDriverException: unknown error: Runtime.executionContextCreated has invalid 'context': {"auxData":{"frameId":"11895A1B77AC560388AA2919259E1422","isDefault":true},"id":1,"name":"","origin":"://"}
  (Session info: chrome=66.0.3359.139)
  (Driver info: chromedriver=2.8.241036,platform=Mac OS X 10.13.3 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 0 milliseconds
Build info: version: '3.11.0', revision: 'e59cfb3', time: '2018-03-11T20:26:55.152Z'
System info: host: 'cetreas-MBP', ip: 'fe80:0:0:0:c9e:2c67:1d27:4e0b%en0', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.13.3', java.version: '1.8.0_161'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities {acceptSslCerts: true, applicationCacheEnabled: false, browserConnectionEnabled: false, browserName: chrome, chrome: {userDataDir: /var/folders/s7/lv2wt4t15cn...}, cssSelectorsEnabled: true, databaseEnabled: false, handlesAlerts: true, javascriptEnabled: true, locationContextEnabled: true, nativeEvents: true, platform: MAC, platformName: MAC, rotatable: false, takesHeapSnapshot: true, takesScreenshot: true, version: 66.0.3359.139, webStorageEnabled: true}
Session ID: ca1f4ba131e73c3d01058bec2b976d22
    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.http.JsonHttpResponseCodec.reconstructValue(JsonHttpResponseCodec.java:40)
    at org.openqa.selenium.remote.http.AbstractHttpResponseCodec.decode(AbstractHttpResponseCodec.java:80)
    at org.openqa.selenium.remote.http.AbstractHttpResponseCodec.decode(AbstractHttpResponseCodec.java:44)
    at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:158)
    at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:545)
    at org.openqa.selenium.remote.RemoteWebDriver.get(RemoteWebDriver.java:273)
    at com.cetrea.flows.Flows.main(Flows.java:15)

我真的无法弄清楚该错误试图告诉我什么.是因为我要在标题完全加载网站之前要求标题吗?我是否需要在getTitle()之前添加某种waitforit命令?

I cant really figure out what the error is trying to tell me. Is it because I'm asking for the title before it has fully loaded the site maybe? Do I need to add some kind of waitforit command before the getTitle() ?

推荐答案

此错误消息...

org.openqa.selenium.WebDriverException: unknown error: Runtime.executionContextCreated has invalid 'context': {"auxData":{"frameId":"11895A1B77AC560388AA2919259E1422","isDefault":true},"id":1,"name":"","origin":"://"}

...表示 ChromeDriver 无法启动/产生新的 WebBrowser ，即 Chrome浏览器会话.

...implies that the ChromeDriver was unable to initiate/spawn a new WebBrowser i.e. Chrome Browser session.

您的主要问题是所使用的二进制文件之间的版本兼容性:

Your main issue is the version compatibility between the binaries you are using as follows :

您正在使用非常古老的 chromedriver = 2.8 .
您正在使用 chrome = 66.0
ChromeDriver v2.38 的发行说明明确提到以下内容:

You are using chromedriver=2.8 which is pretty ancient.
You are using chrome=66.0
Release Notes of ChromeDriver v2.38 clearly mentions the following :

因此 ChromeDriver 版本( v2.8 )和 Chrome浏览器版本( v66.0 )

So there is a clear mismatch between ChromeDriver version (v2.8) and the Chrome Browser version (v66.0)

将 ChromeDriver 升级到当前的 ChromeDriver v2 .38 级别.
保持 Chrome 版本处于 Chrome v66.x 级别. (根据ChromeDriver v2.38发行说明)

IDE

清理您的项目工作区和重建您的项目，并且仅具有必需的依赖项.
使用 CCleaner 工具清除之前和之后的所有操作系统琐事您的 test Suite 的执行.
如果您的基本 Web客户端版本太旧，请通过 Revo Uninstaller 并安装最新版GA和 Web Client 的发行版本.
进行系统重启.
执行您的@Test.
始终在tearDown(){}方法中调用driver.quit()以关闭&优雅地销毁 WebDriver 和 Web Client 实例.

Upgrade ChromeDriver to current ChromeDriver v2.38 level.
Keep Chrome version at Chrome v66.x levels. (as per ChromeDriver v2.38 release notes)
Clean your Project Workspace through your IDE and Rebuild your project with required dependencies only.
Use CCleaner tool to wipe off all the OS chores before and after the execution of your test Suite.
If your base Web Client version is too old, then uninstall it through Revo Uninstaller and install a recent GA and released version of Web Client.
Take a System Reboot.
Execute your @Test.
Always invoke driver.quit() within tearDown(){} method to close & destroy the WebDriver and Web Client instances gracefully.

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