我试图把硒网络驱动程序等待，但我总是得到一个例外”
org. openqa.selenium.TimeoutException：预期条件失败：等待位于By.id的元素的可见性：mobile eNo（尝试20秒，间隔100毫秒）"。
我把秒数增加到100，然后也遇到了同样的问题，我的id是正确的。
WebDriver d = new ChromeDriver();
d.get("http://myurlOne");
WebElement username = d.findElement(By.id("username_id"));
username.sendKeys("123");
WebElement password = d.findElement(By.id("password_id"));
password.sendKeys("123");
d.findElement(By.id("loginButton")).click();
System.out.println("logged in successfully");
d.get("http://navigatedurl");
JavascriptExecutor js = (JavascriptExecutor)d;
System.out.println("navigated to new page");
WebDriverWait wait__mob = new WebDriverWait(d, 20);
try {
System.out.println("Start"+new Date());
wait__mob .pollingEvery(100,TimeUnit.MILLISECONDS).until(ExpectedConditions.visibilityOfElementLocated(By.id("mobileNo")));
d.findElement(By.id("mobileNo")).sendKeys("99999999999);
} catch (TimeoutException e) {
// TODO: handle exception
System.out.println(e.toString());
}
分区代码：
<div class="form-group">
<label class="col-xs-5 control-label" for="mobileNo">Mobile No.</label>
<div class="col-xs-6 leftpadding-none">
<input type="tel" class="form-control k-input" id="mobileNo"
name="inputmobileNo" placeholder="" maxlength="10"> <!--required
pattern="\d{10}" validationMessage="Mobile No. is Required"-->
</div>
根据JavaDocs of WebDriverWait Class，如果你想改变轮询间隔，你需要在构造函数中改变它，因为构造函数如下：
WebDriverWait(WebDriver driver, long timeOutInSeconds, long sleepInMillis)
Wait will ignore instances of NotFoundException that are encountered (thrown) by default in the 'until' condition, and immediately propagate all others.
向前看，当您尝试在元素上调用sendKeys（）时，您需要调用期望条件方法元素ToBeClickable。
所以你的代码将是：
WebDriver d = new ChromeDriver();
d.get("http://myurlOne");
WebElement username = d.findElement(By.id("username_id"));
username.sendKeys("123");
WebElement password = d.findElement(By.id("password_id"));
password.sendKeys("123");
d.findElement(By.id("loginButton")).click();
System.out.println("logged in successfully");
d.get("http://navigatedurl");
System.out.println("navigated to new page");
WebDriverWait wait__mob = new WebDriverWait(d, 20);
try {
System.out.println("Start"+new Date());
wait__mob.until(ExpectedConditions.elementToBeClickable(By.xpath("//div[@class='form-group']//label[contains(.,'Mobile No.')]//following::div[1]/input[@class='form-control k-input' and @id='mobileNo' and @type='tel']"))).sendKeys("9999999999);
} catch (TimeoutException e) {
System.out.println(e.toString());
}
