Chromedriver --screenshot 在无头模式下不起作用？答案

【问题标题】：Chromedriver --screenshot not working in headless mode?Chromedriver --screenshot 在无头模式下不起作用？
【发布时间】：2017-12-09 10:45:43
【问题描述】：

我正在使用带有 webdriver 的新 chrome 驱动程序无头模式（Chrome v59，mac os）。但不幸的是，无头模式下的屏幕截图选项对我不起作用。以下代码显示了配置的 chrome 选项。

chromeOptions.addArguments("headless");
chromeOptions.addArguments("disable-gpu");
chromeOptions.addArguments("window-size=1980x960");
chromeOptions.addArguments("screenshot");

我收到未知的 chrome 错误：

unknown error: Chrome failed to start: exited abnormally
  (Driver info: chromedriver=2.30.477690 (c53f4ad87510ee97b5c3425a14c0e79780cdf262),platform=Mac OS X 10.11.6 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 60.05 seconds
Build info: version: '3.4.0', revision: 'unknown', time: 'unknown'
System info: host: 'ip-192-168-13-242.ec2.internal', ip: '192.168.13.242', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.11.6', java.version: '1.8.0_51'
Driver info: driver.version: ChromeDriver
        at com.axonix.utilities.SeleniumDriverWrapper.setupNewDriverInstance(SeleniumDriverWrapper.java:78)
        at com.axonix.utilities.SeleniumDriverWrapper.<init>(SeleniumDriverWrapper.java:55)
        at com.axonix.utilities.SeleniumInterface.<init>(SeleniumInterface.java:30)
        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:422)
        at org.picocontainer.injectors.AbstractInjector.newInstance(AbstractInjector.java:145)
        at org.picocontainer.injectors.ConstructorInjector$1.run(ConstructorInjector.java:342)
        at org.picocontainer.injectors.AbstractInjector$ThreadLocalCyclicDependencyGuard.observe(AbstractInjector.java:270)
        at org.picocontainer.injectors.ConstructorInjector.getComponentInstance(ConstructorInjector.java:364)
        at org.picocontainer.injectors.AbstractInjectionFactory$LifecycleAdapter.getComponentInstance(AbstractInjectionFactory.java:56)
        at org.picocontainer.behaviors.AbstractBehavior.getComponentInstance(AbstractBehavior.java:64)
        at org.picocontainer.behaviors.Stored.getComponentInstance(Stored.java:91)
        at org.picocontainer.DefaultPicoContainer.getInstance(DefaultPicoContainer.java:699)
        at org.picocontainer.DefaultPainer.getComponent(DefaultPicoContainer.java:647)
        at org.picocontainer.DefaultPicoContainer.getComponent(DefaultPicoContainer.java:632)
        at org.picocontainer.parameters.BasicComponentParameter$1.resolveInstance(BasicComponentParameter.java:118)
        at org.picocontainer.parameters.ComponentParameter$1.resolveInstance(ComponentParameter.java:136)
        at org.picocontainer.injectors.SingleMemberInjector.getParameter(SingleMemberInjector.java:78)
        at org.picocontainer.injectors.ConstructorInjector$CtorAndAdapters.getParameterArguments(ConstructorInjector.java:309)
        at org.picocontainer.injectors.ConstructorInjector$1.run(ConstructorInjector.java:335)
        at org.picocontainer.injectors.AbstractInjector$ThreadLocalCyclicDependencyGuard.observe(AbstractInjector.java:270)
        at org.picocontainer.injectors.ConstructorInjector.getComponentInstance(ConstructorInjector.java:364)
        at org.picocontainer.injectors.AbstractInjectionFactory$LifecycleAdapter.getComponentInstance(AbstractInjectionFactory.java:56)
        at org.picocontainer.behaviors.AbstractBehavior.getComponentInstance(AbstractBehavior.java:64)
        at org.picocontainer.behaviors.Stored.getComponentInstance(Stored.java:91)
        at org.picocontainer.DefaultPicoContainer.getInstance(DefaultPicoContainer.java:699)
        at org.picocontainer.DefaultPicoContainer.getComponent(DefaultPicoContainer.java:647)
        at org.picocontainer.DefaultPicoContainer.getComponent(DefaultPicoContainer.java:678)
        at cucumber.runtime.java.picocontainer.PicoFactory.getInstance(PicoFactory.java:40)
        at cucumber.runtime.java.JavaStepDefinition.execute(JavaStepDefinition.java:38)
        at cucumber.runtime.StepDefinitionMatch.runStep(StepDefinitionMatch.java:37)
        at cucumber.runtime.Runtime.runStep(Runtime.java:300)
        at cucumber.runtime.model.StepContainer.runStep(StepContainer.java:44)
        at cucumber.runtime.model.StepContainer.runSteps(StepContainer.java:39)
        at cucumber.runtime.model.CucumberScenario.run(CucumberScenario.java:44)
        at cucumber.runtime.model.CucumberFeature.run(CucumberFeature.java:165)
        at cucumber.runtimee.run(Runtime.java:122)
        at cucumber.api.cli.Main.run(Main.java:36)
        at cucumber.api.cli.Main.main(Main.java:18)

【问题讨论】：

不工作是什么意思？请阅读How to Ask，尤其是关于minimal reproducible example（MCVE）和How much research effort is expected?的部分，这将帮助您调试自己的程序并自己解决问题。如果您这样做但仍然卡住，您可以返回并发布您的 MCVE、您尝试过的内容以及执行结果（包括任何错误消息），以便我们更好地为您提供帮助。
@JeffC 更新了我的问题，但出现了错误！！

标签： selenium selenium-webdriver webdriver selenium-chromedriver headless

【解决方案1】：

window-size 参数需要字符串格式 800,600，试试这个：

chromeOptions.addArguments("window-size=1980,960");

另外，您的 screenshot 参数中有错字：

chromeOptions.addArguments("screenshot");

这里是所有可用 Chromium 命令行开关的一个很好的参考：

https://peter.sh/experiments/chromium-command-line-switches/

【讨论】：