java.net.ConnectException：在无头模式下调用 Firefox 浏览器时无法连接到 localhost/127.0.0.1:xxxx

Question

我收到“java.net.ConnectException：无法连接到本地主机” 每当我尝试初始化 FirefoxDriver 时出错。有什么帮助吗？

下面的代码和堆栈跟踪：

Java 代码

firefoxBinary = new FirefoxBinary();
firefoxBinary.addCommandLineOptions("--headless");

System.setProperty("webdriver.gecko.driver", (String) pluginConfig.get("geckodriver"));
firefoxOptions = new FirefoxOptions();

firefoxOptions.setBinary(firefoxBinary);
driver = new FirefoxDriver(firefoxOptions);

这行报错

driver = new FirefoxDriver(firefoxOptions);

堆栈跟踪：

java.net.ConnectException: Failed to connect to localhost/127.0.0.1:5054 Build info: version: '3.12.0', revision: '7c6e0b3', time: '2018-05-08T14:04:26.12Z' System info: host: 'xxxxx-Lenovo-YOGA-3-Pro-1370', ip: '127.0.1.1', os.name: 'Linux', os.arch: 'amd64', os.version: '4.4.0-127-generic', java.version: '1.8.0_171' Driver info: driver.version: FirefoxDriver
org.openqa.selenium.WebDriverException
Build info: version: '3.12.0', revision: '7c6e0b3', time: '2018-05-08T14:04:26.12Z'
System info: host: 'xxxxxx-Lenovo-YOGA-3-Pro-1370', ip: '127.0.1.1', os.name: 'Linux', os.arch: 'amd64', os.version: '4.4.0-127-generic', java.version: '1.8.0_171'
Driver info: driver.version: FirefoxDriver
    at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:92)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:543)
    at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:207)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:130)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:125)
    at 

Answer 1

解决了。问题是，我使用了损坏的 geckodriver 副本，它在堆栈跟踪上方给出了以下错误。

--- exec-maven-plugin:1.2.1:exec (default-cli) @ fetcher-firefox ---
path/to/geckodriver: 2: path/to/geckodriver: Syntax error: newline unexpected
Exception in thread "main" org.openqa.selenium.WebDriverException: java.net.ConnectException: Failed to connect to localhost/127.0.0.1:15615

构建信息：版本：'3.12.0'，修订：'7c6e0b3'，时间：'2018-05-08T14:04:26.12Z' 系统信息：主机：'xxxxx-Lenovo-YOGA-3-Pro-1370'，ip：'127.0.1.1'，os.name：'Linux'，os.arch：'amd64'，os.version：'4.4。 0-127-generic', java.version: '1.8.0_171'

可以在此处找到问题的详细信息： https://github.com/SeleniumHQ/selenium/issues/6013#issuecomment-396665924

Answer 2

不确定 pluginConfig 文件的内容。通常通过 Selenium 3.12.0、GeckoDriver v 0.20.1 以编程方式在 Headless Mode 中调用 Firefox Browser， Firefox Quantum v60.0.2 和 Java 您需要通过 FirefoxOptions 的实例传递 argument --headless > 你可以使用以下解决方案：

• 代码块：

  import org.openqa.selenium.WebDriver;
  import org.openqa.selenium.firefox.FirefoxDriver;
  import org.openqa.selenium.firefox.FirefoxOptions;
  
  public class A_Firefox_Headless
  {
      public static void main(String[] args) 
      {
          System.setProperty("webdriver.gecko.driver", "/path/to/geckodriver");
          FirefoxOptions options = new FirefoxOptions();
          options.addArguments("--headless");
          WebDriver driver =  new FirefoxDriver(options);
          System.out.println("Mozilla Firefox Headless Browser Initialized");
          driver.get("http://www.google.com");
          System.out.println("Page Title is : "+driver.getTitle());
          driver.quit();
      }
  }
  

• 控制台输出：

  1528817592552   geckodriver INFO    geckodriver 0.20.1
  1528817592563   geckodriver INFO    Listening on 127.0.0.1:23550
  1528817593461   mozrunner::runner   INFO    Running command: "C:\\Program Files\\Mozilla Firefox\\firefox.exe" "-marionette" "--headless" "-profile" "C:\\Users\\ATECHM~1\\AppData\\Local\\Temp\\rust_mozprofile.M2jv24VJ0QMg"
  *** You are running in headless mode.
  1528817597139   Marionette  INFO    Listening on port 8949
  1528817597577   Marionette  WARN    TLS certificate errors will be ignored for this session
  Jun 12, 2018 9:03:17 PM org.openqa.selenium.remote.ProtocolHandshake createSession
  INFO: Detected dialect: W3C
  Mozilla Firefox Headless Browser Initialized
  Page Title is : Google