我在使用pojo时会遇到异常吗？

2024-05-17 • 问答

大家好，请检查我的代码

public class Sample1 extends Sample {
        public static void main(String[] args) {
        System.setProperty("webdriver.chrome.driver","C:\\Users\\Balaji-PC\\cucumber\\SamplePro\\driver\\chromedriver.exe");
        WebDriver driver = new ChromeDriver();
        driver.get("https://www.facebook.com/");
        driver.manage().window().maximize();

        Sample s= new Sample1();
        WebElement d = s.getusername();

        d.sendKeys("lsmanikandan");
        s.getPassword().sendKeys("manikandan");
    }
}

请在我的pojo课上检查

public class Sample {
    WebDriver driver;
    public Sample() {
        PageFactory.initElements(driver,this);
    }

    @FindBy(id = "email")
    private WebElement username;

    @FindBy(id = "pass")
    private WebElement password;

    public WebElement getusername() {
        return username;
    }

    public WebElement getPassword() {
        return password;
    }

}

请在例外下面找到

线程“ main”中的异常java.lang.NullPointerException在 org.openqa.selenium.support.pagefactory.DefaultElementLocator.findElement（DefaultElementLocator.java:69）在 org.openqa.selenium.support.pagefactory.internal.LocatingElementHandler.invoke（LocatingElementHandler.java:38）在com.sun.proxy。$ Proxy4.sendKeys（未知来源）处 org.test.Sample1.main（Sample1.java:18）

代码中的问题是您没有将驱动程序状态从子类Sample 1传递到基类Sample。

这三点是魔术

在Child类中添加参数化的构造函数-Sample1

public Sample1（WebDriver驱动程序）{super（driver）; }
在父类中添加参数化的构造函数-示例

公共样本（WebDriver驱动程序）{ PageFactory.initElements（driver，this）; System.out.println（“页面工厂已启动”）; }

通过传递驱动程序来创建父类中被调用页面工厂的对象。

Sample s = new Sample1（driver）;

public class Sample {
WebDriver driver;
public Sample(WebDriver driver) {
    PageFactory.initElements(driver,this);
    System.out.println("Page Factory started");
}

@FindBy(id = "email")
private WebElement username;

@FindBy(id = "pass")
private WebElement password;

public WebElement getUsername() {
    System.out.println(username.getAttribute("data-testid"));
    return username;
}

public WebElement getPassword() {
    System.out.println(username.getAttribute("data-testid"));
    return password;
}  }

public class Sample {
    WebDriver driver;
public Sample(WebDriver driver) {
    PageFactory.initElements(driver,this);
    System.out.println("Page Factory started");
}

@FindBy(id = "email")
private WebElement username;

@FindBy(id = "pass")
private WebElement password;

public WebElement getUsername() {
    System.out.println(username.getAttribute("data-testid"));
    return username;
}

public WebElement getPassword() {
    System.out.println(username.getAttribute("data-testid"));
    return password;
}    }

我在使用pojo时会遇到异常吗？

smily_lydia 回答：我在使用pojo时会遇到异常吗？

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