您需要使用代理来捕获webrequests。browsermob代理是一种流行的selenium代理。
请参见下面的示例https://www.seleniumeasy.com/selenium-tutorials/browsermob-proxy-selenium-example:

// start the proxy
    proxy = new BrowserMobProxyServer();
    proxy.start(0);

    //get the Selenium proxy object - org.openqa.selenium.Proxy;
    Proxy seleniumProxy = ClientUtil.createSeleniumProxy(proxy);

    // configure it as a desired capability
    DesiredCapabilities capabilities = new DesiredCapabilities();
    capabilities.setCapability(CapabilityType.PROXY, seleniumProxy);

    //set chromedriver system property
    System.setProperty("webdriver.chrome.driver", driverPath+"chromedriver.exe");
    driver = new ChromeDriver(capabilities);

    // enable more detailed HAR capture, if desired (see CaptureType for the complete list)
    proxy.enableHarCaptureTypes(CaptureType.REQUEST_CONTENT, CaptureType.RESPONSE_CONTENT);

    // create a new HAR with the label "seleniumeasy.com"
    proxy.newHar("seleniumeasy.com");

    // open seleniumeasy.com
    driver.get("https://seleniumeasy.com/");