使用selenium webdriver在页面对象模型中运行项目时收到java.lang.NullPointerException
当使用SeleniumWebDriver创建页面对象模型并使用testng创建测试时,我遇到了一个问题。 我在我的web_elements.java页面中安装了webdriver,并在Testing1.java中对我添加的两个类运行测试。但是当我运行测试时,我得到了一个错误 web_element.java-页面使用selenium webdriver在页面对象模型中运行项目时收到java.lang.NullPointerException,java,selenium,selenium-webdriver,testng,Java,Selenium,Selenium Webdriver,Testng,当使用SeleniumWebDriver创建页面对象模型并使用testng创建测试时,我遇到了一个问题。 我在我的web_elements.java页面中安装了webdriver,并在Testing1.java中对我添加的两个类运行测试。但是当我运行测试时,我得到了一个错误 web_element.java-页面 package Pages; import org.openqa.selenium.By; import org.openqa.selenium.WebDriver; import
package Pages;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.support.ui.WebDriverWait;
import java.util.concurrent.TimeUnit;
public class web_Elements {
private final WebDriverWait wait;
WebDriver driver;
public void LoginTest() throws InterruptedException {
driver.findElement(By.xpath("//body[@class='ng-scope']/div[@class='ng- scope']/div[@class='container-fluid ng-scope']/div[@class='ng-scope']//button[.='Customer Login']")).click();
}
public void SelectYourName() {
driver.findElement(By.cssSelector("#userSelect > option:nth-child(3)")).click();
}
public web_Elements(WebDriver driver) {
this.driver = driver;
long timeOutInSeconds = 10; // just an arbitrary value example
this.wait = new WebDriverWait(driver, timeOutInSeconds);
// the rest of your constructor as in the original code
driver.manage().timeouts().pageLoadTimeout(10, TimeUnit.SECONDS);
driver.manage().timeouts().implicitlyWait(60, TimeUnit.SECONDS);
}}
package Test_Cases;
import Pages.web_Elements;
import Utilities.DriverFactory;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
public class Testing1 {
public WebDriver driver;
web_Elements PageTesting;
@BeforeClass
public void Initialize_driver() throws InterruptedException {
///Initialize diver
System.setProperty("webdriver.chrome.driver",
"C:\\Users\\rassools\\Documents\\ChromeD\\chromedriver.exe");
WebDriver driver = new ChromeDriver();
driver.get("http://www.way2automation.com/angularjs-protractor/banking/#/login");
driver.manage().window().maximize();
}
@Test(priority = 0)
public void other() throws InterruptedException {
PageTesting = new web_Elements(driver);
PageTesting.LoginTest();
PageTesting.SelectYourName();
}
public void wait(int seconds) {
try {
Thread.sleep(2000);
} catch (final InterruptedException e) {
e.printStackTrace();
}
}
}
Testing1.java-第页
package Pages;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.support.ui.WebDriverWait;
import java.util.concurrent.TimeUnit;
public class web_Elements {
private final WebDriverWait wait;
WebDriver driver;
public void LoginTest() throws InterruptedException {
driver.findElement(By.xpath("//body[@class='ng-scope']/div[@class='ng- scope']/div[@class='container-fluid ng-scope']/div[@class='ng-scope']//button[.='Customer Login']")).click();
}
public void SelectYourName() {
driver.findElement(By.cssSelector("#userSelect > option:nth-child(3)")).click();
}
public web_Elements(WebDriver driver) {
this.driver = driver;
long timeOutInSeconds = 10; // just an arbitrary value example
this.wait = new WebDriverWait(driver, timeOutInSeconds);
// the rest of your constructor as in the original code
driver.manage().timeouts().pageLoadTimeout(10, TimeUnit.SECONDS);
driver.manage().timeouts().implicitlyWait(60, TimeUnit.SECONDS);
}}
package Test_Cases;
import Pages.web_Elements;
import Utilities.DriverFactory;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
public class Testing1 {
public WebDriver driver;
web_Elements PageTesting;
@BeforeClass
public void Initialize_driver() throws InterruptedException {
///Initialize diver
System.setProperty("webdriver.chrome.driver",
"C:\\Users\\rassools\\Documents\\ChromeD\\chromedriver.exe");
WebDriver driver = new ChromeDriver();
driver.get("http://www.way2automation.com/angularjs-protractor/banking/#/login");
driver.manage().window().maximize();
}
@Test(priority = 0)
public void other() throws InterruptedException {
PageTesting = new web_Elements(driver);
PageTesting.LoginTest();
PageTesting.SelectYourName();
}
public void wait(int seconds) {
try {
Thread.sleep(2000);
} catch (final InterruptedException e) {
e.printStackTrace();
}
}
}
错误消息
java.lang.NullPointerException
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:882)
at org.openqa.selenium.support.ui.FluentWait.<init>(FluentWait.java:104)
at org.openqa.selenium.support.ui.WebDriverWait.<init>(WebDriverWait.java:71)
at org.openqa.selenium.support.ui.WebDriverWait.<init>(WebDriverWait.java:45)
at Pages.web_Elements.<init>(web_Elements.java:27)
at Test_Cases.Testing1.other(Testing1.java:32)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:134)
at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:597)
at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:173)
at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)
at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:816)
at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:146)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1510)
at org.testng.TestRunner.privateRun(TestRunner.java:766)
at org.testng.TestRunner.run(TestRunner.java:587)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:384)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:378)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:337)
at org.testng.SuiteRunner.run(SuiteRunner.java:286)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1187)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1109)
at org.testng.TestNG.runSuites(TestNG.java:1039)
at org.testng.TestNG.run(TestNG.java:1007)
at com.intellij.rt.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:66)
at com.intellij.rt.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:110)
===============================================
Default Suite
Total tests run: 1, Passes: 0, Failures: 1, Skips: 0
===============================================
Process finished with exit code 0
java.lang.NullPointerException
位于com.google.common.base.premissions.checkNotNull(premissions.java:882)
位于org.openqa.selenium.support.ui.FluentWait.(FluentWait.java:104)
位于org.openqa.selenium.support.ui.WebDriverWait.(WebDriverWait.java:71)
位于org.openqa.selenium.support.ui.WebDriverWait.(WebDriverWait.java:45)
在Pages.web\u Elements.(web\u Elements.java:27)
在Test_Cases.Testing1.other(Testing1.java:32)
位于java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(本机方法)
位于java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
位于java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
位于java.base/java.lang.reflect.Method.invoke(Method.java:564)
位于org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:134)
位于org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:597)
位于org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:173)
位于org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)
位于org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:816)
位于org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:146)
位于org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
位于org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
位于java.base/java.util.ArrayList.forEach(ArrayList.java:1510)
位于org.testng.TestRunner.privateRun(TestRunner.java:766)
位于org.testng.TestRunner.run(TestRunner.java:587)
位于org.testng.SuiteRunner.runTest(SuiteRunner.java:384)
在org.testng.SuiteRunner.runSequential上(SuiteRunner.java:378)
位于org.testng.SuiteRunner.privateRun(SuiteRunner.java:337)
运行(SuiteRunner.java:286)
位于org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
位于org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)
在org.testng.testng.runSuitesSequentially上(testng.java:1187)
位于org.testng.testng.runSuitesLocally(testng.java:1109)
位于org.testng.testng.runSuites(testng.java:1039)
运行(testng.java:1007)
在com.intellij.rt.testng.idearemotestng.run上(idearemotestng.java:66)
在com.intellij.rt.testng.RemoteTestNGStarter.main上(RemoteTestNGStarter.java:110)
===============================================
默认套件
运行的测试总数:1,通过:0,失败:1,跳过:0
===============================================
进程已完成,退出代码为0
这里
@BeforeClass
public void Initialize_driver()引发InterruptedException{
///初始化潜水员
System.setProperty(“webdriver.chrome.driver”,
“C:\\Users\\rasools\\Documents\\ChromeD\\chromedriver.exe”);
WebDriver驱动程序=新的ChromeDriver();
驱动程序。获取(“http://www.way2automation.com/angularjs-protractor/banking/#/login");
driver.manage().window().maximize();
}
您没有初始化类的字段。您只需创建一个新变量并初始化它。从Initialize\u driver()
方法的外部看不到它
要初始化字段,您需要更改WebDriver driver=new ChromeDriver()代码>到驱动程序=新的ChromeDriver()代码>