英文:
WebElement becomes null during runtime
问题
以下是您要翻译的内容：
当我运行下面的代码时，在下面的部分中出现空指针异常，我是通过Cucumber和TestNG来运行的。为什么当我一次性运行所有这些步骤时，WebElement we 在运行时会重置为 null，尽管我将其存储为 we=dr.findElement(By.id("email"));
@When("^I get value from textbox using gettext$")
public void i_get_value_from_textbox_using_gettext() throws Throwable {
// Write code here that turns the phrase above into concrete actions
System.out.println(we.toString());
System.out.println("Getting value from text " + we.getText());
//tbHelp.tbGetText(By.id("email"));
}
为什么运行时 WebElement we 变为 null？
以下是完整的代码：
public class FbWebElementsStepDefn {
private WebDriver dr;
private BrowserHelper browserHelp;
private WebElement we;
private List<WebElement> totWes;
private TextBoxHelper tbHelp;
@Given("^Launching Chrome Browser and navigating to \"([^\"]*)\" to test$")
public void launching_Chrome_Browser_and_navigating_to_to_test(String url) throws Throwable {
// Write code here that turns the phrase above into concrete actions
System.setProperty("webdriver.chrome.driver", "D:\\seleniumJar\\chromedriver.exe");
dr = new ChromeDriver();
dr.get(url);
browserHelp = BrowserHelper.getInstance(dr);
browserHelp.BrowserMaximize();
tbHelp = TextBoxHelper.getInstance(dr);
}
@Given("^I provide unique locator for webelement$")
public void i_provide_unique_locator_for_webelement() throws Throwable {
// Write code here that turns the phrase above into concrete actions
we = dr.findElement(By.id("email"));
}
@Then("^I should get desired webelement$")
public void i_should_get_desired_webelement() throws Throwable {
// Write code here that turns the phrase above into concrete actions
System.out.println(we.toString());
}
@Then("^I close Browser$")
public void i_close_Browser() throws Throwable {
// Write code here that turns the phrase above into concrete actions
if (dr != null) {
dr.quit();
}
}
@When("^I give non unique locator$")
public void i_give_non_unique_locator() throws Throwable {
// Write code here that turns the phrase above into concrete actions
totWes = dr.findElements(By.tagName("input"));
}
@Then("^I should get list of elements$")
public void i_should_get_list_of_elements() throws Throwable {
// Write code here that turns the phrase above into concrete actions
System.out.println("Total Elements " + totWes.size());
}
@When("^I enter value \"([^\"]*)\" in text box using sendkeys$")
public void i_enter_value_in_text_box_using_sendkeys(String value) throws Throwable {
// Write code here that turns the phrase above into concrete actions
//we=dr.findElement(By.id("email"));
//we.sendKeys(value);
tbHelp.tbEnterText(By.id("email"), value);
}
@When("^I get value from textbox using gettext$")
public void i_get_value_from_textbox_using_gettext() throws Throwable {
// Write code here that turns the phrase above into concrete actions
System.out.println(we.toString());
System.out.println("Getting value from text " + we.getText());
//tbHelp.tbGetText(By.id("email"));
}
@Then("^I clear textbox$")
public void i_clear_textbox() throws Throwable {
// Write code here that turns the phrase above into concrete actions
//we.clear();
tbHelp.tbClearText(By.id("email"));
}
}
英文:
When I run this below code, i am getting null pointer exception on below part,
I am running this with help of Cucumber and testng. why WebElement we becomes reset to null when i run all these steps in one go, eventhough i stored as we=dr.findElement(By.id("email"));
@When("^I get value from textbox using gettext$")
public void i_get_value_from_textbox_using_gettext() throws Throwable {
// Write code here that turns the phrase above into concrete actions
System.out.println(we.toString());
System.out.println("Getting value from text "+we.getText());
//tbHelp.tbGetText(By.id("email"));
}
Why WebElement we becomes null during runtime?
below is the complete code,
public class FbWebElementsStepDefn
{
private WebDriver dr;
private BrowserHelper browserHelp;
private WebElement we;
private List<WebElement> totWes;
private TextBoxHelper tbHelp;
@Given("^Launching Chrome Browser and navigating to \"([^\"]*)\" to test$")
public void launching_Chrome_Browser_and_navigating_to_to_test(String url) throws Throwable {
// Write code here that turns the phrase above into concrete actions
System.setProperty("webdriver.chrome.driver", "D:\\\\seleniumJar\\\\chromedriver.exe");
dr=new ChromeDriver();
dr.get(url);
browserHelp=BrowserHelper.getInstance(dr);
browserHelp.BrowserMaximize();
tbHelp=TextBoxHelper.getInstance(dr);
}
@Given("^I provide unique locator for webelement$")
public void i_provide_unique_locator_for_webelement() throws Throwable {
// Write code here that turns the phrase above into concrete actions
we=dr.findElement(By.id("email"));
}
@Then("^I should get desired webelement$")
public void i_should_get_desired_webelement() throws Throwable {
// Write code here that turns the phrase above into concrete actions
System.out.println(we.toString());
}
@Then("^I close Browser$")
public void i_close_Browser() throws Throwable {
// Write code here that turns the phrase above into concrete actions
if(dr!=null)
{
dr.quit();
}
}
@When("^I give non unique locator$")
public void i_give_non_unique_locator() throws Throwable {
// Write code here that turns the phrase above into concrete actions
totWes= dr.findElements(By.tagName("input"));
}
@Then("^I should get list of elements$")
public void i_should_get_list_of_elements() throws Throwable {
// Write code here that turns the phrase above into concrete actions
System.out.println("Total Elements "+totWes.size());
}
@When("^I enter value \"([^\"]*)\" in text box using sendkeys$")
public void i_enter_value_in_text_box_using_sendkeys(String value) throws Throwable {
// Write code here that turns the phrase above into concrete actions
//we=dr.findElement(By.id("email"));
//we.sendKeys(value);
tbHelp.tbEnterText(By.id("email"), value);
}
@When("^I get value from textbox using gettext$")
public void i_get_value_from_textbox_using_gettext() throws Throwable {
// Write code here that turns the phrase above into concrete actions
System.out.println(we.toString());
System.out.println("Getting value from text "+we.getText());
//tbHelp.tbGetText(By.id("email"));
}
@Then("^I clear textbox$")
public void i_clear_textbox() throws Throwable {
// Write code here that turns the phrase above into concrete actions
//we.clear();
tbHelp.tbClearText(By.id("email"));
}
}
答案1
得分: 0
你可以将we声明为静态字段。
private static WebElement we;
但在我看来，为提供元素创建一个cucumber步骤是一个不好的主意。
尝试阅读关于页面对象模型的内容，它可以让你的自动化体验更加出色！
英文:
You can declare we as static field.
private static WebElement we;
But in my opinion it's a bad idea to create a cucumber step for providing elements.
Try to read about Page Object Model which makes your automation experience much better!
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