如何在使用google-chrome -headless时设置浏览器窗口大小？ [英] How to set the browser window size when using `google-chrome --headless`?

问题描述

尝试使用Selenium webdriver命令在浏览器上设置浏览器大小 - 无头。

webdriver error：

   - 失败：未知错误：无法获取自动延伸
来自未知错误：无法找到页面：chrome-extension：//aapnijgdinlhnhlmodcfapnahmbfebeb/_generated_background_page.html 
（会话信息：headless chrome = 58.0.3029.81）
（驱动程序信息：chromedriver = 2.29.461571（8a88bbe0775e2a23afda0ceaf2ef7ee74e822cc5），platform = Linux 4.4.0 -72-generic x86_64）（警告：服务器没有提供任何堆栈跟踪信息）
命令持续时间或超时时间：10.07秒
构建信息：版本：'3.3.1'，修订版本：'5234b32'，时间：'2017-03-10 09:04:52 -0800'
系统信息：host：'826f6a766112'，ip：'172.17.0.2'，os.name：'Linux'，os.arch：' amd64'，os.version：'4.4.0-72-generic'，java.version：'1.8.0_121'
驱动程序信息：org.openqa.selenium.chrome.ChromeD river 
 Capabilities [{applicationCacheEnabled = false，rotated = false，mobileEmulationEnabled = false，networkConnectionEnabled = false，chrome = {chromedriverVersion = 2.29.461571（8a88bbe0775e2a23afda0ceaf2ef7ee74e822cc5），userDataDir = / tmp / .org.chromium.Chromium.cuymDL} ，takeEapSnapshot = true，pageLoadStrategy = normal，databaseEnabled = false，handlesAlerts = true，hasTouchScreen = false，version = 58.0.3029.81，platform = LINUX，browserConnectionEnabled = false，nativeEvents = true，acceptSslCerts = true，locationContextEnabled = true，webStorageEnabled = true ，browserName = chrome，takesScreenshot = true，javascriptEnabled = true，cssSelectorsEnabled = true，unexpectedAlertBehaviour =}] 
会话ID：9569e5ebd8f7540ce510b20647443baf 
  

解决方案

发现它，只需传递 - window-size 命令行参数给Google Chrome，例如 - 风ow-size = 1920,1080

在量角器配置这看起来像这样：

 能力：{
 browserName：' chrome'，
 chromeOptions：{
 args：['headless'，'window-size = 1920,1080'] 
} 
} 
  

很酷的是，窗口的大小并不局限于当前的显示，真正的无头的含义可以像测试所需的一样大

Java代码：

  options.addArguments（window-大小= 1920,1080\" ）; 
  

我在这里扩展了一些： https://stackoverflow.com/a/43542416/511069

Tried setting the browser size on chrome --headless by using Selenium webdriver commands.

I get this webdriver error:

      - Failed: unknown error: cannot get automation extension
from unknown error: page could not be found: chrome-extension://aapnijgdinlhnhlmodcfapnahmbfebeb/_generated_background_page.html
  (Session info: headless chrome=58.0.3029.81)
  (Driver info: chromedriver=2.29.461571 (8a88bbe0775e2a23afda0ceaf2ef7ee74e822cc5),platform=Linux 4.4.0-72-generic x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 10.07 seconds
Build info: version: '3.3.1', revision: '5234b32', time: '2017-03-10 09:04:52 -0800'
System info: host: '826f6a766112', ip: '172.17.0.2', os.name: 'Linux', os.arch: 'amd64', os.version: '4.4.0-72-generic', java.version: '1.8.0_121'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities [{applicationCacheEnabled=false, rotatable=false, mobileEmulationEnabled=false, networkConnectionEnabled=false, chrome={chromedriverVersion=2.29.461571 (8a88bbe0775e2a23afda0ceaf2ef7ee74e822cc5), userDataDir=/tmp/.org.chromium.Chromium.cuymDL}, takesHeapSnapshot=true, pageLoadStrategy=normal, databaseEnabled=false, handlesAlerts=true, hasTouchScreen=false, version=58.0.3029.81, platform=LINUX, browserConnectionEnabled=false, nativeEvents=true, acceptSslCerts=true, locationContextEnabled=true, webStorageEnabled=true, browserName=chrome, takesScreenshot=true, javascriptEnabled=true, cssSelectorsEnabled=true, unexpectedAlertBehaviour=}]
Session ID: 9569e5ebd8f7540ce510b20647443baf

解决方案

Found it, simply pass --window-size command line argument to Google Chrome, for example --window-size=1920,1080

In a Protractor config this would look like this:

capabilities: {
    browserName: 'chrome',
    chromeOptions: {
        args: ['headless', 'window-size=1920,1080']
    }
}

The cool thing is that the windows size is not limited to the current display, is truly headless meaning in can be as large as needed for the tests.

Java code:

options.addArguments("window-size=1920,1080");

I expand a bit more on this here: https://stackoverflow.com/a/43542416/511069

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