硒 java 中的错误：预期 [对象未定义]

Question

I don't understand why I get the error Expected [object Undefined] undefined to be a string

这是脚本java LoginToGmail.java

WebDriver driver;
driver =new FirefoxDriver();
driver.manage().window().maximize();
driver.navigate().to("http://www.facebook.com");
driver.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);
WebElement act= driver.findElement(By.id("email"));
act.sendKeys("rupali9392@gmail.com");

完整堆栈错误是：

org.openqa.selenium.InvalidArgumentException: Expected [object Undefined] undefined to be a
string Build info: version: 'unknown', revision: '5234b32', time: '2017-03-10 09:00:17 -0800'
Capabilities [{moz:profile=C:\Users\SHEKHAR\AppData\Local\Temp\rust_mozpr‌ofile.mipot0y6Nzs5,
rotatable=false, timeouts={implicit=0, pageLoad=300000, script=30000}, 
pageLoadStrategy=normal ,platform=ANY, specificationLevel=0, moz:accessibilityChecks=false,
acceptInsecureCerts=false, browserVersion=53.0, platformVersion=6.1, moz:processID=5892,
browserName=firefox, platformName=windows_nt}]

Answer 1

要使用 Selenium 3.x、Mozila Firefox 52.x，您需要从 here 下载最新的 gecko 驱动程序并提供 gecko 驱动程序的绝对路径，如下所示：

//Mozila Firefox
System.setProperty("webdriver.gecko.driver", "C:\your_directory\geckodriver.exe");
WebDriver driver =  new FirefoxDriver();
driver.manage().window().maximize();
driver.get("http:\gmail.com");
driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
driver.findElement(By.id("Email")).sendKeys("your_id");

硒 java 中的错误：预期 [对象未定义]

Error in java with selenium : Expected [object Undefined]

java

selenium

firefox

selenium-webdriver

geckodriver