異常在線程 「主」 顯示java.lang.NullPointerException在硒的webdriver

Question

類登錄爲以下方法Kreato_Login（）： -

public void Kreato_Login(){ 
     driver = new FirefoxDriver(); 
     baseUrl = "https://testrugtn.kreatocrm.com/"; 
     driver.manage().timeouts().implicitlyWait(30, TimeUnit. SECONDS); 
     driver.manage().window().maximize(); 
     driver.get(baseUrl + "/"); 
     driver.findElement(By. id("Login_txtUserName")).clear(); 
     driver.findElement(By. id("Login_txtUserName")).sendKeys("saravana"); 
     driver.findElement(By. id("Login_txtPassword")).clear(); 
     driver.findElement(By. id("Login_txtPassword")).sendKeys("5678"); 
     driver.findElement(By. id("Login_btnLogin")).click(); 

} 

鉛類如下面的方法 「Lead_MandatoryCheck（）」： -

LoginLogout leadInstance=new LoginLogout(); 
public void Lead_MandatoryCheck() throws InterruptedException{ 
    leadInstance.Kreato_Login(); 
    driver1.findElement(By. xpath("//a[contains(text(),'Customers')]")).click(); 
    driver1.findElement(By. linkText("Leads")).click(); 
    //Add New 
    driver1.findElement(By. cssSelector("#ctl00_ContentPlaceHolder1_cbpSubContent_imgAddNew_CD > span.dx-vam")).click(); 
    Thread.sleep(3000); 
    //Save 
    driver1.findElement(By. cssSelector("#ctl00_ContentPlaceHolder1_cbpAssociationNew_btnNewItemTopCreationSave_CD > span.dx-vam")).click(); 
    String mandatoryPopup= driver1.switchTo().alert().getText(); 
    driver1.switchTo().alert().accept(); 
    System.out.println(mandatoryPopup); 

} 

我打電話從類觸發上述方法如下： -

public class TriggerClass { 

public static void main(String[] args) throws Exception { 
    // TODO Auto-generated method stub 
     /*LeadCreation lc= new LeadCreation(); 
     lc.setUp(); 
     lc.testLeadCreation(); 
     lc.tearDown();*/ 
    LeadModule Lm=new LeadModule(); 
    Lm.Lead_MandatoryCheck(); 
} 

當我運行 「Trigger.class」

Exception in thread "main" java.lang.NullPointerException 
at workflow.LeadModule.Lead_MandatoryCheck(LeadModule.java:132) 
at workflow.TriggerClass.main(TriggerClass.java:13) 

Answer 1

這是你如何組織你的類，部件及功能：

TriggerClass.java：

public class TriggerClass { 

public static WebDriver driver; 

public static void main(String[] args) throws Exception { 
    driver = new FirefoxDriver(); 
    LeadModule Lm=new LeadModule(); 
    Lm.Lead_MandatoryCheck(); 
} 

LeadModule.java：

public class LeadModule { 

    public WebDriver driver; 

    public LeadModule() { 
     this.driver = TriggerClass.driver; 
    } 

    public void Lead_MandatoryCheck() throws InterruptedException{ 
     LoginLogout leadInstance = new LoginLogout(); 
     leadInstance.Kreato_Login(); 
     driver.findElement(By.xpath("//a[contains(text(),'Customers')]")).click(); 
     driver.findElement(By.linkText("Leads")).click(); 
     //Add New 
     driver.findElement(By.cssSelector("#ctl00_ContentPlaceHolder1_cbpSubContent_imgAddNew_CD > span.dx-vam")).click(); 
     Thread.sleep(3000); 
     //Save 
     driver.findElement(By. cssSelector("#ctl00_ContentPlaceHolder1_cbpAssociationNew_btnNewItemTopCreationSave_CD > span.dx-vam")).click(); 
     String mandatoryPopup= driver.switchTo().alert().getText(); 
     driver.switchTo().alert().accept(); 
     System.out.println(mandatoryPopup); 

    } 

LoginLogout.java：

public class LoginLogout extends LeadModule { 

public void Kreato_Login(){ 
     baseUrl = "https://testrugtn.kreatocrm.com/"; 
     driver.manage().timeouts().implicitlyWait(30, TimeUnit. SECONDS); 
     driver.manage().window().maximize(); 
     driver.get(baseUrl + "/"); 
     driver.findElement(By.id("Login_txtUserName")).clear(); 
     driver.findElement(By.id("Login_txtUserName")).sendKeys("saravana"); 
     driver.findElement(By.id("Login_txtPassword")).clear(); 
     driver.findElement(By.id("Login_txtPassword")).sendKeys("5678"); 
     driver.findElement(By.id("Login_btnLogin")).click(); 

} 

} 

你的Java /硒基礎知識都不清楚。請閱讀文檔或查看YouTube上的相關教程。