问题
Can anyone explain me about Annotation @FindBy
in WebDriver
?
Where and why it is used?
回答1:
It's to assist with the construction of locators when using the Page Factory to support your Page Objects
PageFactory Wiki Page
However I'm discovering that I find it more useful to store your locators as By objects rather than WebElements as they are more flexible and you tend to avoid running into the StaleElementException.
By myLocator = By.id("idOfYourElement")
instead of
@FindBy(id = "idOfYourElement")
WebElement myLocator;
This way you can also use your locators when asserting the absence of an element or use it in the ExpectedConditions helpers.
回答2:
Can I cite API-documentation?
Used to mark a field on a Page Object to indicate an alternative mechanism for locating the element or a list of elements. Used in conjunction with
PageFactory#proxyElement
this allows users to quickly and easily create PageObjects.
So, if you use PageObject
pattern then you adds this annotation to class members and WebDriver
automatically inject appropriate WebElement
s to it during object initialization (when PageFactory.initElements()
called).
I strongly recommend to follow this link and read about PageObject pattern and @FindBy annotations usage with more examples.
回答3:
You can also use Pagefactory, and have something like:
@FindBy(how = How.NAME, using = "logonName")
private WebElement logonNameField;
@FindBy(how = How.NAME, using = "password")
private WebElement passwordField;
Now, as for How., you can have:
- CLASS_NAME
- CSS
- ID
- ID_OR_NAME
- LINK_TEXT
- NAME
- PARTIAL_LINK_TEXT
- TAG_NAME
- XPATH
- class
Or you can use your own DOM Search plus Xpath, that would be outside of WebDriver API , but it should work.
回答4:
With the help of PageFactory class, we use annotations @FindBy
to find WebElements. We use initElements method to initialize web elements. @FindBy
can accept tagName, partialLinkText, name, linkText, id, css, className, xpath as attributes.
The @FindBy
annotation locates one or more WebElements using a single criterion. For example, to identify all elements that have the same class attribute, we could use the following identification:
@FindBy(how = How.CLASS_NAME, using = "classname")
private List<WebElement> singlecriterion;`enter code here`
来源:https://stackoverflow.com/questions/9028757/what-is-the-use-of-annotation-findby