Java Selenium-sendKeys（）抛出'；要发送的密钥应为非空字符序列'；

嘿，伙计们，我是硒的新手，面临一些问题。 有3个类，一个是从excel中读取数据的数据提供者，另一个是添加用户的类（从excel中读取后），最后一个类是调用Add类的主类

下面是添加类代码

    package pomPagefactory;

    import org.openqa.selenium.By;
    import org.openqa.selenium.WebDriver;
    import org.testng.annotations.Test;

    public class Add extends Data_Provider {
    public Add(WebDriver driver) {
        super(driver);
        // TODO Auto-generated constructor stub
    }

    public static String fname, lname, title, email, tel, uname, pass, cpass;

    @Test(dataProvider = "testset")
    public void create(String fname, String lname, String title, String email, String tel, String uname, String pass,
            String cpass) {

        driver.findElement(By.xpath("//input[@name='FirstName']")).clear();
        driver.findElement(By.xpath("//input[@name='FirstName']")).sendKeys(fname);

        driver.findElement(By.xpath("//input[@id='LastName']")).clear();
        driver.findElement(By.xpath("//input[@id='LastName']")).sendKeys(lname);
        driver.findElement(By.xpath("//input[@id='Title']")).clear();
        driver.findElement(By.xpath("//input[@id='Title']")).sendKeys(title);

        driver.findElement(By.xpath("//input[@id='Email']")).clear();
        driver.findElement(By.xpath("//input[@id='Email']")).sendKeys(email);

        driver.findElement(By.xpath("//input[@id='TelephoneNumber']")).clear();
        driver.findElement(By.xpath("//input[@id='TelephoneNumber']")).sendKeys(tel);

        driver.findElement(By.xpath("//input[@id='UserID']")).clear();
        driver.findElement(By.xpath("//input[@id='UserID']")).sendKeys(uname);

        driver.findElement(By.xpath("//input[@id='password']")).clear();
        driver.findElement(By.xpath("//input[@id='password']")).sendKeys(pass);

        driver.findElement(By.xpath("//input[@id='cpassword']")).clear();
        driver.findElement(By.xpath("//input[@id='cpassword']")).sendKeys(cpass);

        driver.findElement(
                By.xpath("//button[@type='submit']//span[@class='ng-scope'][contains(text(),'Create User')]")).click();

    }
}

  package pomPagefactory;
    //all imports;
    public class Admin {

    public static WebDriver driver;

    @Test
    public void Page() throws Exception {

        System.setProperty("webdriver.chrome.driver",
                "C:\\Users\\srawat\\Downloads\\chromedriver_win32\\chromedriver.exe");

        driver = new ChromeDriver();
        driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
        driver.manage().window().maximize();

        Locator loc = PageFactory.initElements(driver, Locator.class);
        loc.Login("uaadmin", "novell");

        loc.people_user();

        loc.create_new_user();
        Add ad=PageFactory.initElements(driver, Add.class);
        ad.create(Add.fname,Add.lname, Add.title, Add.email, Add.tel, Add.uname, 
        Add.pass, Add.cpass);
    }
}

DataProvider类是正确的，没有问题

我在主页面（主类）中调用了添加类（添加类中的方法）

主类代码

    package pomPagefactory;

    import org.openqa.selenium.By;
    import org.openqa.selenium.WebDriver;
    import org.testng.annotations.Test;

    public class Add extends Data_Provider {
    public Add(WebDriver driver) {
        super(driver);
        // TODO Auto-generated constructor stub
    }

    public static String fname, lname, title, email, tel, uname, pass, cpass;

    @Test(dataProvider = "testset")
    public void create(String fname, String lname, String title, String email, String tel, String uname, String pass,
            String cpass) {

        driver.findElement(By.xpath("//input[@name='FirstName']")).clear();
        driver.findElement(By.xpath("//input[@name='FirstName']")).sendKeys(fname);

        driver.findElement(By.xpath("//input[@id='LastName']")).clear();
        driver.findElement(By.xpath("//input[@id='LastName']")).sendKeys(lname);
        driver.findElement(By.xpath("//input[@id='Title']")).clear();
        driver.findElement(By.xpath("//input[@id='Title']")).sendKeys(title);

        driver.findElement(By.xpath("//input[@id='Email']")).clear();
        driver.findElement(By.xpath("//input[@id='Email']")).sendKeys(email);

        driver.findElement(By.xpath("//input[@id='TelephoneNumber']")).clear();
        driver.findElement(By.xpath("//input[@id='TelephoneNumber']")).sendKeys(tel);

        driver.findElement(By.xpath("//input[@id='UserID']")).clear();
        driver.findElement(By.xpath("//input[@id='UserID']")).sendKeys(uname);

        driver.findElement(By.xpath("//input[@id='password']")).clear();
        driver.findElement(By.xpath("//input[@id='password']")).sendKeys(pass);

        driver.findElement(By.xpath("//input[@id='cpassword']")).clear();
        driver.findElement(By.xpath("//input[@id='cpassword']")).sendKeys(cpass);

        driver.findElement(
                By.xpath("//button[@type='submit']//span[@class='ng-scope'][contains(text(),'Create User')]")).click();

    }
}

  package pomPagefactory;
    //all imports;
    public class Admin {

    public static WebDriver driver;

    @Test
    public void Page() throws Exception {

        System.setProperty("webdriver.chrome.driver",
                "C:\\Users\\srawat\\Downloads\\chromedriver_win32\\chromedriver.exe");

        driver = new ChromeDriver();
        driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
        driver.manage().window().maximize();

        Locator loc = PageFactory.initElements(driver, Locator.class);
        loc.Login("uaadmin", "novell");

        loc.people_user();

        loc.create_new_user();
        Add ad=PageFactory.initElements(driver, Add.class);
        ad.create(Add.fname,Add.lname, Add.title, Add.email, Add.tel, Add.uname, 
        Add.pass, Add.cpass);
    }
}

---

您将

Add

类中的变量声明为静态变量，然后将它们发送回

Add

类中的

create

方法。这没有多大意义，问题的根源是从未初始化过的变量，因此它们是

null

此外，您还误解了使用

PageFactory

，

PageFactory.initElements

不初始化

String

类变量，它怎么知道要将什么值放在那里？它使用

@FindBy

注释初始化

WebElement

类变量

---

从

Add

类中删除静态变量，如果您仅在

create（）

中需要它们，则将它们传递给此方法；如果您在类级别需要它们，则在构造函数中将它们传递给

private

变量。

当我们为该类创建对象时，静态变量用默认值初始化。字符串类的默认值为null。所以它是空的。@Murthi这是我写的变量，从未初始化过，所以它们是

null

用错误堆栈跟踪更新问题