使用selenium的java出错：预期

我不明白为什么我得到错误Expected [object Undefined] undefined为一个字符串

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("[e-mail]"); 

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_mozpr‌​ofile.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，您需要从这里下载最新的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");