import org.openqa.selenium.Keys

WebElement.sendKeys(Keys.RETURN);

import语句是针对Java的。对于其他语言来说，情况可能有所不同。例如，在Python中，它是from selenium.webdriver.common.keys import Keys

如果你是在这种情况下:

a)只是想按下键，但你没有一个特定的webElement来点击

b)您正在使用Selenium 2 (WebDriver)

那么解决方案是:

    Actions builder = new Actions(webDriverInstance);
    builder.sendKeys(Keys.RETURN).perform();

Java

driver.findElement(By.id("Value")).sendKeys(Keys.RETURN);

OR,

driver.findElement(By.id("Value")).sendKeys(Keys.ENTER);

Python

from selenium.webdriver.common.keys import Keys
driver.find_element_by_name("Value").send_keys(Keys.RETURN)

OR,

driver.find_element_by_name("Value").send_keys(Keys.ENTER)

OR,

element = driver.find_element_by_id("Value")
element.send_keys("keysToSend")
element.submit()

Ruby

element = @driver.find_element(:name, "value")
element.send_keys "keysToSend"
element.submit

OR,

element = @driver.find_element(:name, "value")
element.send_keys "keysToSend"
element.send_keys:return

OR,

@driver.action.send_keys(:enter).perform
@driver.action.send_keys(:return).perform

C#

driver.FindElement(By.Id("Value")).SendKeys(Keys.Return);

OR,

driver.FindElement(By.Id("Value")).SendKeys(Keys.Enter);

尝试使用XPath表达式搜索元素，然后，以下代码工作:

driver.findElement(By.xpath(".//*[@id='txtFilterContentUnit']")).sendKeys(Keys.ENTER);

Actions action = new Actions(driver);
action.sendKeys(Keys.RETURN);

Java / JavaScript:

你可能也可以用这种方式，在非母语的情况下:

public void triggerButtonOnEnterKeyInTextField(String textFieldId, String clickableButId)
{
    ((JavascriptExecutor) driver).executeScript(
        "   elementId = arguments[0];
            buttonId = arguments[1];
            document.getElementById(elementId)
                .addEventListener("keyup", function(event) {
                    event.preventDefault();
                    if (event.keyCode == 13) {
                        document.getElementById(buttonId).click();
                    }
                });",

        textFieldId,
        clickableButId);
}