Question

Selenium pageFactory NullPointerException。任何帮助将不胜感激。它适用于setUp()的登录，但在该驱动程序出现后为空。

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();
    }
}

我得到以下例外：

失败：goToPortal java.lang.NullPointerException at 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。$ Proxy6.sendKeys（未知来源）at com.demo.pages.PortalsPage.goToPortals（PortalsPage.java:30）at com.demo.control.Portals.goToPortal（Portals.java:28）at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）at sun.reflect.NativeMethodAccessorImpl.invoke（未知来源）at sun.reflect.DelegatingMethodAccessorImpl.invoke（未知来源）at java.lang.reflect.Method.invoke（未知来源）at org.testng.internal.MethodInvocationHelper.invokeMethod（MethodInvocationHelper.java:80）在org.testng.internal.Invoker.invokeMethod（Invoker.java:714）at org.testng.internal.Invoker.invokeTestMethod（Invoker.java:901）at at org.testng.internal.Invoker.invokeTestMethods（Invoker.java:1231）at at org.testng.internal.TestMethodWorker.invokeTestMethods（TestMethodWorker.java:127）在 org.testng.internal.TestMethodWorker.run（TestMethodWorker.java:111）在org.testng.TestRunner.privateRun（TestRunner.java:767）at org.testng.TestRunner.run（TestRunner.java:617）at org.testng.SuiteRunner.runTest（SuiteRunner.java:334）at org.testng.SuiteRunner.runSequentially（SuiteRunner.java:329）at at org.testng.SuiteRunner.privateRun（SuiteRunner.java：291）at at org.testng.SuiteRunner.run（SuiteRunner.java:240）at org.testng.SuiteRunnerWorker.runSuite（SuiteRunnerWorker.java:52）at org.testng.SuiteRunnerWorker.run（SuiteRunnerWorker.java:86）at org.testng.TestNG.runSuitesSequentially（TestNG.java:1198）at at org.testng.TestNG.runSuitesLocally（TestNG.java:1123）at at org.testng.TestNG.run（TestNG.java:1031）at org.testng.remote.AbstractRemoteTestNG.run（AbstractRemoteTestNG.java:132） at org.testng.remote.RemoteTestNG.initAndRun（RemoteTestNG.java:230）在org.testng.remote.RemoteTestNG.main（RemoteTestNG.java:76）

Answer 1

您当前的方法似乎有点复杂。但是，如果不深入研究可以用来修复整体设计的其他方法的细节，这里有一个清理版本的代码，应该可以使用。

这里的想法是，您只需要页面类（以*Page结尾的代表特定页面的页面类，并公开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

延伸出来

所以这是类

<强> 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();
    }

}

<强> 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();
    }
}

<强> TestBase.java

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();
    }

}

<强> PortalsTest.java

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();
    }
}

驱动程序

1 个答案: