驱动程序的Selenium pageFactory NullPointerException

Question

public class TestBase {

    public WebDriver driver;
    String url = PropertiesFile.readPropertiesFile("autUrl");

    public WebDriver getDriver() {
        System.setProperty("webdriver.chrome.driver", 
        System.getProperty("user.dir") + "/driver/chromedriver.exe");

        driver = new ChromeDriver();

        return driver;
    }

    public void getUrl(String url) {
        driver.get(url);
        driver.manage().window().maximize();
    }

    public void init() {
        getDriver();
        getUrl(url);
    }
}



public class LogInPage extends TestBase {
    WebDriver driver;
    @FindBy(id = "loginEmail")public WebElement userName_field;
    @FindBy(name = "password")public WebElement password_field;
    @FindBy(xpath = "//*[@id='main-content']/aside/div/form/input[2]")public WebElement SignMeIn_btn;

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

    // Login
    public void logIn(String userName, String password) {
        userName_field.sendKeys(userName);
        password_field.sendKeys(password);
        SignMeIn_btn.click();
    }

}


   public class LogIn extends TestBase {

    LogInPage logInPage;

    private String user = PropertiesFile.readPropertiesFile("user");
    private String password = PropertiesFile.readPropertiesFile("password");



    public LogIn(WebDriver driver) {
        this.driver = driver;
    }


    public void setUp(){
        init();
    }


    public void logIn(){
        logInPage = new LogInPage(driver);
        logInPage.logIn(user, password);
    }

}

public class PortalsPage extends TestBase {

    WebDriver driver;

    @FindBy(id = "loginEmail") public WebElement userName_field;
    @FindBy(xpath=".//*[@id='tabDetail']") public WebElement tenantPage_li;
    @FindBy(id="tabDetail") public WebElement ownerPage_li;
    @FindBy(xpath="//a[contains(@href,'tenant.action')]") public WebElement tenantPortal_link;
    @FindBy(xpath="//a[contains(@href,'owner.action')]") public WebElement ownerPortal_link;

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


    public void goToPortals(){      
        userName_field.sendKeys("a");
        tenantPage_li.click();
    }

}

public class Portals extends TestBase {
    PortalsPage portals;
    WebDriver driver;

    @BeforeClass
    public void setUp(){
        LogIn login = new LogIn(driver);
        login.setUp();
        login.logIn();

    }

    @Test
    public void goToPortal(){
        portals = new PortalsPage(driver);
        portals.goToPortals();
    }
}

以下是我得到的例外情况：

失败：goToPortal java.lang.nullPointerException（位于org.openqa.selenium.support.pageFactor.defaultelementLocator.findElement（defaultelementLocator.java:69)（位于org.openqa.selenium.support.pageFactor.internal.locatingelementHandler.invoke(locatingelementHandler.java:38)（位于com.sun.proxy）。$proxy6.sendkeys（未知源）（位于ethodworker.invoketestmethods(testmethodworker.java:127)在org.testng.internal.testmethodworker.run（testmethodworker.java:111)在org.testng.testrunner.privaterun（testrunner.java:767)在org.testng.testrunner.run（testrunner.java:617)在org.testng.testrunner.run（testrunner.java:334)在org.testng.suiterunner.runtest

Answer 1

你现在的方法似乎有点复杂。但是，在不深入研究您可以使用什么其他方法来修复总体设计的细节的情况下，这里有一个经过清理的代码版本，它应该可以工作。

这里的想法是，您只需要页面类（以*page结尾的类表示特定页面，并公开了可以在该特定页面上执行的一些业务功能）和测试类，测试类本身从TestBase扩展

下面是课程

loginpage.java

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.support.FindBy;
import org.openqa.selenium.support.PageFactory;

public class LogInPage {
    @FindBy(id = "loginEmail")
    private WebElement userNameTextField;
    @FindBy(name = "password")
    private WebElement passwordTextField;
    @FindBy(xpath = "//*[@id='main-content']/aside/div/form/input[2]")
    private WebElement signInButton;

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

    public void logIn(String userName, String password) {
        userNameTextField.sendKeys(userName);
        passwordTextField.sendKeys(password);
        signInButton.click();
    }

}

PortalSpage.java

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.support.FindBy;
import org.openqa.selenium.support.PageFactory;

public class PortalsPage {
    @FindBy(id = "loginEmail")
    private WebElement usernameTextField;
    @FindBy(xpath = ".//*[@id='tabDetail']")
    private WebElement tenantPage;
    @FindBy(id = "tabDetail")
    private WebElement ownerPage;
    @FindBy(xpath = "//a[contains(@href,'tenant.action')]")
    private WebElement tenantPortalLink;
    @FindBy(xpath = "//a[contains(@href,'owner.action')]")
    private WebElement ownerPortalLink;


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

    public void goToPortals() {
        usernameTextField.sendKeys("a");
        tenantPage.click();
    }
}

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;

public class TestBase {
    private WebDriver driver;

    protected WebDriver getDriver() {
        if (driver != null) {
            return driver;
        }
        System.setProperty("webdriver.chrome.driver", System.getProperty("user.dir") + "/driver/chromedriver.exe");
        driver = new ChromeDriver();
        return driver;
    }

    public void getUrl(String url) {
        getDriver().get(url);
        getDriver().manage().window().maximize();
    }

}

import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

public class PortalsTest extends TestBase {
    private PortalsPage portals;
    private String user = PropertiesFile.readPropertiesFile("user");
    private String password = PropertiesFile.readPropertiesFile("password");
    private String url = PropertiesFile.readPropertiesFile("autUrl");


    @BeforeClass
    public void setUp() {
        LogInPage login = new LogInPage(getDriver());
        getUrl(url);
        login.logIn(user, password);
    }

    @Test
    public void goToPortal() {
        portals = new PortalsPage(getDriver());
        portals.goToPortals();
    }
}