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任何人都可以解决并解释下面的程序。我在主线程错误中遇到异常

package amazon;

import static org.junit.Assert.*;
import java.sql.Driver;
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.By;
import org.openqa.selenium.Proxy;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.interactions.Actions;
import org.openqa.selenium.remote.CapabilityType;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.Select;
import org.openqa.selenium.support.ui.WebDriverWait;


public class Inheritancedemo 
{
    private  WebDriver driver;
        public void impexp(){
        driver=new FirefoxDriver();
        driver.manage().window().maximize();
        driver.get("http://www.amazon.in/");
        WebElement home=driver.findElement(By.id("nav-link-yourAccount"));
        Actions builder=new Actions(driver);
        builder.moveToElement(home).perform();
        driver.findElement(By.xpath(".//*[@id='nav-flyout-ya-signin']/a/span")).click();
        driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
driver.findElement(By.id("ap_email")).sendKeys("jothimani.naveen@gmail.com");
        driver.findElement(By.id("ap_password")).sendKeys("9952709603");
        driver.findElement(By.id("signInSubmit")).click();
    }

public void logusername()
    {
    WebElement home1=driver.findElement(By.xpath(".//*[@id='nav-link-yourAccount']/span[2]"));
        Actions builder=new Actions(driver);
        builder.moveToElement(home1).perform();
        driver.findElement(By.xpath(".//*[@id='nav-flyout-yourAccount']/div[2]/a[1]/span")).click();
    }
    public void vardeclare()
    {
    WebElement home2=driver.findElement(By.xpath(".//*[@id='nav-link-yourAccount']/span[2]"));
        Actions builder3=new Actions(driver);
        builder3.moveToElement(home2).perform();
        driver.findElement(By.xpath(".//*[@id='nav-item-signout']/span")).click();
    }
}
package amazon;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.support.ui.Select;

public class Editpage extends Inheritancedemo{
    public WebDriver driver;
    public void edit()
    {
        driver.findElement(By.xpath(".//*[@id='a-page']/div[1]/div/div[3]/div/div/div[2]/div/div[1]/ul/li[2]/span/a")).click();
        Select se=new Select(driver.findElement(By.id("creditCardIssuer")));
        se.selectByIndex(1);
driver.findElement(By.id("addCreditCardNumber")).sendKeys("4596010006236333");
        driver.findElement(By.id("card-name")).sendKeys("SURESH KUMAR");
        Select se1=new Select(driver.findElement(By.id("newCreditCardMonth")));
        se1.selectByIndex(4);
        Select se2=new Select(driver.findElement(By.id("newCreditCardYear")));
        se2.selectByIndex(5);
        driver.findElement(By.id("enterAddressFullName")).sendKeys("SURESH KUMAR");           


        driver.findElement(By.id("enterAddressAddressLine1")).sendKeys("ALAGAR APARTMENTS");
        driver.findElement(By.id("enterAddressAddressLine2")).sendKeys("GANDHIJI ST, SINGANALLUR");
        driver.findElement(By.id("enterAddressCity")).sendKeys("COIMBATORE");
        driver.findElement(By.id("enterAddressStateOrRegion")).sendKeys("KERALA");
        driver.findElement(By.id("enterAddressPostalCode")).sendKeys("621405");
        Select se3=new Select(driver.findElement(By.id("enterAddressCountryCode")));
        se3.selectByIndex(4);
        driver.findElement(By.id("enterAddressPhoneNumber")).sendKeys("7373875253");
        driver.findElement(By.xpath(".//*[@id='newCreditCardForm']/table[3]/tbody/tr/td/table/tbody/tr/td/table/tbody/tr/td/table/tbody/tr[6]/td[2]/input"));
        }
public static void main(String[] args) {
        Editpage e=new Editpage();
        e.impexp();
        e.logusername();
        e.edit();
        e.vardeclare();
}   

}

Answer 1

Naveen，从以下变化开始 - 尝试在继承演示类的构造函数中声明Web驱动程序，并将访问修饰符设置为public。 - 不要在子类中再次声明Web驱动程序，即编辑页面类，因为驱动程序声明由超类处理。

线程“main”中的异常java.lang.NullPointerException IN SELENIUM

1 个答案: