Driver Service Class

服务类用于管理驱动程序的启动和停止. They can not be used with a Remote WebDriver session.

Service classes allow you to specify information about the driver, like location and which port to use. They also let you specify what arguments get passed to the command line. Most of the useful arguments are related to logging.

Default Service instance

To start a driver with a default service instance:

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

    ChromeDriverService service = new ChromeDriverService.Builder().build();
    driver = new ChromeDriver(service);

    service = ChromeService()
    driver = webdriver.Chrome(service=service)

            var service = FirefoxDriverService.CreateDefaultService();
            driver = new FirefoxDriver(service);

    service = Selenium::WebDriver::Service.chrome
    @driver = Selenium::WebDriver.for :chrome, service: service

Driver location

Note: If you are using Selenium 4.6 or greater, you shouldn’t need to set a driver location. If you can not update Selenium or have an advanced use case here is how to specify the driver location:

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

    ChromeDriverService service = new ChromeDriverService.Builder()
        .usingDriverExecutable(driverLocation)
        .build();

    service = ChromeService(executable_path=driver_path)

            var service = ChromeDriverService.CreateDefaultService(path);

    service.executable_path = driver_path

Driver port

If you want the driver to run on a specific port, you may specify it as follows:

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

    ChromeDriverService service = new ChromeDriverService.Builder()
        .usingPort(1234)
        .build();

    service = ChromeService(port=1234)

            service.Port = 1234;

    service.port = 1234

Setting log output

Getting driver logs can be helpful for debugging various issues. The Service class lets you direct where the logs will go

Currently, the default behavior for logging varies by language (and sometimes browser):

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

File output

To change the logging output to save to a specific file:

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

    ChromeDriverService service = new ChromeDriverService.Builder()
        .withLogFile(logLocation)
        .build();

    System.setProperty(ChromeDriverService.CHROME_DRIVER_LOG_PROPERTY,
        logLocation.getAbsolutePath());

    service = ChromeService(log_path=log_path)

            service.LogPath = file;

    service.log = file_name

Console output

To change the logging output to display in the console as STDOUT:

• Java
• Python
• CSharp
• Ruby
• JavaScript
• Kotlin

    ChromeDriverService service = new ChromeDriverService.Builder()
        .withLogOutput(System.out)
        .build();

    System.setProperty(ChromeDriverService.CHROME_DRIVER_LOG_PROPERTY,
        logLocation.getAbsolutePath());

    service.log = $stdout