如何用java解决selenium webdriver中的超时错误？

Question

My Html

<form id="load_form" class="ajaxsubmit" method="post" action="ajax.php">
<input type="hidden" value="register" name="action">
<h3>Registration Form</h3>
<img id="loader" width="20" height="20" style="display:none;" src="images/loader.gif">
<p id="alert"></p>
<fieldset>
<fieldset>
<fieldset>
<fieldset>
<fieldset>
<fieldset>
<label>Username:</label>
<input type="text" required="" name="username">
</fieldset>

My Java Code

WebDriverWait wait = new WebDriverWait(driver,30);
WebElement element = wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath("//input[@name='username']")));
element.sendKeys("john");

Getting Below Error

Exception in thread "main" org.openqa.selenium.TimeoutException: Timed out after 30 seconds waiting for visibility of element located by By.xpath: //input[@name='username'] Build info: version: '2.53.0', revision: '35ae25b', time: '2016-03-15 17:01:03'

Any Help? I have already tried by increasing wait but doesn't work

Answer 1

Actually there are two input elements present with the same name username where one is hidden and another is visible and you are intracting with first one which is not visible on the page that's why you are unable to locate, try using cssSelector as below :-

WebDriverWait wait = new WebDriverWait(driver,30);

WebElement element = wait.until(ExpectedConditions.visibilityOfElementLocated(By.cssSelector("div#load_box input[name = 'username']")));
element.sendKeys("john");