無法使用WebDriver單擊元素

Question

我面臨一個非常奇怪的問題。 我正在嘗試打開facebook>單擊“忘記的帳戶鏈接”>，然后在新選項卡中將其打開>單擊兩個文本框。 我的代碼是：

import java.awt.AWTException;
import java.awt.Robot;
import java.awt.event.KeyEvent;
import java.util.ArrayList;
import java.util.concurrent.TimeUnit;

import org.openqa.selenium.By;
import org.openqa.selenium.Keys;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.interactions.Actions;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;


public class OpenLinkInNewTabTest {

    public static void main(String[] args) throws Exception {
        System.setProperty("webdriver.chrome.driver", "<path>\\chromedriver.exe");
        WebDriver driver = new ChromeDriver();

        driver.get("http://www.facebook.com");
        String ParentWindowHandle = driver.getWindowHandle();
        WebElement w = driver.findElement(By.linkText("Forgotten account?"));


        new Actions(driver)
        .keyDown(Keys.CONTROL)
        .keyDown(Keys.SHIFT)
        .click(w)
        .keyUp(Keys.SHIFT)
        .keyUp(Keys.CONTROL)
        .perform();

    new Actions(driver)
        .sendKeys(Keys.CONTROL + "w")
        .perform();




    // ArrayList<String> tabs = new ArrayList<String> (driver.getWindowHandles());
//   
//  driver.switchTo().window(tabs.get(1));
//  WebElement fn = (new WebDriverWait(driver, 20))
//            .until(ExpectedConditions.presenceOfElementLocated(By.cssSelector("#identify_email")));
//  System.out.println(driver.getTitle());
//  fn.sendKeys("abcdejf:");



    for(String winHandle : driver.getWindowHandles()){

         driver.switchTo().window(winHandle);
        if(driver.getTitle().contains("Forgotten Password ")){

            Thread.sleep(5000);


              driver.findElement(By.cssSelector("#identify_email")).sendKeys("adf");
            driver.findElement(By.name("email")).sendKeys("ASF");
            driver.close();
            driver.switchTo().window(ParentWindowHandle);

            break; 

        }
    }


    driver.findElement(By.name("email")).sendKeys("ASF");

    }

}

但是，我無法將價值傳遞給

driver.findElement(By.cssSelector("#identify_email")).sendKeys("adf");

元素看起來像：

<input id="identify_email" class="inputtext" name="email" autofocus="1" type="text">

如果我編寫類似的代碼，例如：

System.setProperty("webdriver.chrome.driver","path\\chromedriver.exe");
        WebDriver driver = new ChromeDriver();
        driver.get("http://www.facebook.com");

        driver.findElement(By.linkText("Forgotten account?")).click();

        driver.findElement(By.name("email")).sendKeys("ASF");
        driver.findElement(By.cssSelector("#identify_email")).sendKeys("adf");

能夠正確單擊兩個元素。 我在運行它時也沒有看到任何未找到異常的元素。 請幫助我調試此問題。 謝謝。 更新：

運行此代碼有時顯示

Exception in thread "main" org.openqa.selenium.InvalidElementStateException: invalid element state
  (Session info: chrome=56.0.2924.87)

Answer 1

等待這個元素：

WebDriverWait wait = new WebDriverWait(driver, 10);
String email = "you@domain.com";
WebElement emailInputField = wait.until(ExpectedConditions.presenceOfElementLocated(By.cssSelector("#identify_email")));
JavascriptExecutor executor = (JavascriptExecutor) driver;
executor.executeScript("arguments[0].setAttribute('value', ' " + email + "')", emailInputField);
break;

單擊可激活此元素。