Question

在第33行以下代码中，在wait.until

附近收到以下错误消息

此行有多个标记 - 无法解析com.google.common.base.Function类型。它是从所需的.class文件间接引用的 - FluentWait类型中的（Function）方法不适用于参数（ExpectedCondition）

   package MPA;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.support.FindBy;
import org.openqa.selenium.support.PageFactory;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;

public class LoginhelperClass {

    WebDriver driver;

    @FindBy(xpath = "//input[@ng-model='login.username']")
    private WebElement userName;

    @FindBy(xpath = "//input[@type='password']")
    private WebElement Password;

    @FindBy(xpath = "//input[@type='submit' and @value='Sign In']")
    private WebElement SignIn;

    @FindBy(xpath = "//span[@class='icon-avatar-round']")
    private WebElement Avatar;

    public LoginhelperClass(WebDriver driver) {
        this.driver = driver;
        PageFactory.initElements(driver, this);
    }

    public void logIn(String uName, String Pswd) throws InterruptedException {
        WebDriverWait wait=new WebDriverWait(driver,7);
        wait.until(ExpectedConditions.visibilityOf(userName));
        userName.sendKeys(uName);
        Password.sendKeys(Pswd);
        SignIn.click();
        try {
            Thread.sleep(4000);
            if (Avatar.isDisplayed()) {
                System.out.println("Login Successfull: " + uName);
            } else {
                System.out.println("Login failure check the credentials: " + uName);
            }
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }

}




 package MPA;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.support.FindBy;
import org.openqa.selenium.support.PageFactory;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;

public class LoginhelperClass {

    WebDriver driver;

    @FindBy(xpath = "//input[@ng-model='login.username']")
    private WebElement userName;

    @FindBy(xpath = "//input[@type='password']")
    private WebElement Password;

    @FindBy(xpath = "//input[@type='submit' and @value='Sign In']")
    private WebElement SignIn;

    @FindBy(xpath = "//span[@class='icon-avatar-round']")
    private WebElement Avatar;

    public LoginhelperClass(WebDriver driver) {
        this.driver = driver;
        PageFactory.initElements(driver, this);
    }

    public void logIn(String uName, String Pswd) throws InterruptedException {
        WebDriverWait wait=new WebDriverWait(driver,7);
        wait.until(ExpectedConditions.visibilityOf(userName));
        userName.sendKeys(uName);
        Password.sendKeys(Pswd);
        SignIn.click();
        try {
            Thread.sleep(4000);
            if (Avatar.isDisplayed()) {
                System.out.println("Login Successfull: " + uName);
            } else {
                System.out.println("Login failure check the credentials: " + uName);
            }
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }

}

Answer 1

您看到的错误如下：

Multiple markers at this line - The type com.google.common.base.Function cannot be resolved. It is indirectly referenced from required .class files - The method until(Function) in the type FluentWait is not applicable for the arguments (ExpectedCondition)

让我们分析代码中发生的事情。

在Page Object中，您已将WebElement定义为：

@FindBy(xpath = "//input[@ng-model='login.username']")
private WebElement userName;

继续前进，您尝试在方法中使用WebElement：

public void logIn(String uName, String Pswd) throws InterruptedException {
    WebDriverWait wait=new WebDriverWait(driver,7);
    wait.until(ExpectedConditions.visibilityOf(userName));
    //
}

所以基本上我们在这里等待间接引用 Angular WebElement userName 的可见性，这取决于属性 ng-model 。在这种情况下，我们永远无法确定在方法 userName 中引用WebElement时，必须强制引用非NULL 值。它也可能是 NULL 。

现在让我们看一下 visibilityOf 的方法定义，它被定义为：

visibilityOf(WebElement element)
An expectation for checking that an element, known to be present on the DOM of a page, is visible.

很明显， visibilityOf 方法需要WebElement的直接引用。因此，如果没有 userName 的明确值（非NULL ）， WebDriverWait ，这是<的变体< strong> FluentWait 显示错误。

Answer 2

使用By / WebElement播放条件：

ExpectedConditions.presenceOfAllElementsLocatedBy(By)
ExpectedConditions.elementExists(By)
ExpectedConditions.elementIsVisible(By)
ExpectedConditions.elementToBeClickable(By/WebElement)
ExpectedConditions.visibilityOfAllElementsLocatedBy(By)

wait.until（ExpectedConditions.visibilityOf（userName））无效

2 个答案: