org.openqa.selenium.UnsupportedCommandException：使用Selenium找不到可变资源

Posted 2021-04-09

我正在使用使用selenium协议的phantomjs webdriver来呈现网页。当我尝试渲染网页时，我收到以下错误：

RemoteWebDriver.get(url)

方法，即使我的webdriver正在运行。

我也尝试重新启动phantomjs webdriver。

org.openqa.selenium.UnsupportedCommandException: Variable Resource Not Found - {"headers":{"Accept-Encoding":"gzip,deflate","Connection":"Keep-Alive","Content-Length":"39","Content-Type":"application/json; charset=utf-8","Host":"10.20.1.239:9517","User-Agent":"Apache-HttpClient/4.5.5 (Java/1.8.0_171)"},"httpVersion":"1.1","method":"POST","post":"{"url":"http://example.com/"}","url":"/session/07e53c90-6b45-11e9-892c-4faf7180871b/url","urlParsed":{"anchor":"","query":"","file":"url","directory":"/session/07e53c90-6b45-11e9-892c-4faf7180871b/","path":"/session/07e53c90-6b45-11e9-892c-4faf7180871b/url","relative":"/session/07e53c90-6b45-11e9-892c-4faf7180871b/url","port":"","host":"","password":"","user":"","userInfo":"","authority":"","protocol":"","source":"/session/07e53c90-6b45-11e9-892c-4faf7180871b/url","queryKey":{},"chunks":["session","07e53c90-6b45-11e9-892c-4faf7180871b","url"]}}
Command duration or timeout: 10.20 seconds
Build info: version: 'unknown', revision: 'unknown', time: 'unknown'
System info: host: 'ip-10-20-1-73.ec2.internal', ip: '10.20.1.73', os.name: 'Linux', os.arch: 'amd64', os.version: '3.10.0-862.2.3.el7.x86_64', java.version: '1.8.0_171'
Driver info: org.openqa.selenium.remote.RemoteWebDriver
Capabilities [{applicationCacheEnabled=false, rotatable=false, handlesAlerts=false, databaseEnabled=false, version=2.1.1, platform=LINUX, browserConnectionEnabled=false, proxy=Proxy(direct), nativeEvents=true, acceptSslCerts=false, driverVersion=1.2.0, locationContextEnabled=false, webStorageEnabled=false, browserName=phantomjs, takesScreenshot=true, driverName=ghostdriver, javascriptEnabled=true, cssSelectorsEnabled=true}]
Session ID: 07e53c90-6b45-11e9-892c-4faf7180871b
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_171]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_171]
        at 

答案

RemoteWebDriver是一个关键字/研究词。所以RemoteWebDriver的实例应该有不同的名称。此外，在调用RemoteWebDriver时，您需要将Selenium Grid Hub的URL和DesiredCapabilities实例作为必需参数传递，您可以使用以下（基于Windows）解决方案：

File path=new File("C:\Utility\phantomjs-2.1.1-windows\bin\phantomjs.exe");
System.setProperty("phantomjs.binary.path",path.getAbsolutePath());
DesiredCapabilities capabilities = DesiredCapabilities.phantomjs();
capabilities.setPlatform(Platform.XXX);         
driver = new RemoteWebDriver(new URL("http://localhost:4444/wd/hub"), capabilities);
driver.get("https://www.google.co.in");
System.out.println(driver.getTitle());
driver.quit();