【发布时间】：2020-07-18 02:13:15
【问题描述】：
我已经编写了以下代码，这是设计框架的程序之一，它每次都会给我这个错误。有人可以帮我解决这个问题吗？ "[RemoteTestNG] 检测到 TestNG 版本 7.0.1 配置失败：@BeforeMethod setUp java.lang.NullPointerException"
package com.mercury.qa.testcases;
import org.testng.Assert;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.AfterTest;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;
import com.mercury.qa.base.TestBase;
import com.mercury.qa.pages.HomePage;
import com.mercury.qa.pages.LoginPage;
public class LoginPageTest extends TestBase {
LoginPage loginPage;
HomePage homePage;
public LoginPageTest() {
// This super() keyword will call the constructor of the base class which is 'TestBase'
super();
}
@BeforeMethod
public void setUp() {
// This will call initialization() method from the base class but initialization() method
//in the base class contains getProperty() method so to avoid the compiler to throw null pointer
//exception we have @Nullabledesigned the above constructor and called the base class constructor
//through super() keyword.
initialization();
loginPage = new LoginPage();
}
@Test(priority = 1)
public void loginPageTitleTest() {
String title = loginPage.validateLoginPageTitle();
Assert.assertEquals(title, "Welcome: Mercury Tours");
}
@Test(priority = 2)
public void mercuryImageLogoTest() {
boolean flag = loginPage.validateMercuryLogo();
Assert.assertTrue(flag);
}
@Test(priority = 3)
public void loginTest() {
//HomePage homePage = new HomePage(); // same as return New HomePage() which is written in LoginPage.java class
homePage = loginPage.login(prop.getProperty("username"), prop.getProperty("password"));
}
@AfterMethod
public void tearDown() {
driver.quit();
}
}
下面是上面程序扩展的测试基类
package com.mercury.qa.base;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Properties;
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.support.events.EventFiringWebDriver;
import com.mercury.qa.util.TestUtil;
public class TestBase {
public static WebDriver driver;
public static Properties prop;
public static EventFiringWebDriver e_driver;
public TestBase(){
try {
prop = new Properties();
FileInputStream ip = new FileInputStream("F:\\Vishal_Offc Work\\Workspace\\"
+ "FreeMercuryTest\\src\\main\\java\\com\\mercury"
+ "\\qa\\config\\config.properties");
prop.load(ip);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void initialization(){
String browserName = prop.getProperty("browser");
if(browserName.equals("chrome")){
System.setProperty("webdriver.chrome.driver","F:\\Drivers\\chromedriver_win32\\chromedriver.exe");
}
else if(browserName.equals("FF")){
System.setProperty("webdriver.gecko.driver","F:\\Drivers\\geckodriver-v0.26.0-win64\\geckodriver.exe");
driver = new FirefoxDriver();
}
driver.manage().window().maximize();
driver.manage().deleteAllCookies();
driver.manage().timeouts().pageLoadTimeout(TestUtil.PAGE_LOAD_TIMEOUT, TimeUnit.SECONDS);
driver.manage().timeouts().implicitlyWait(TestUtil.IMPLICIT_WAIT, TimeUnit.SECONDS);
driver.get(prop.getProperty("url"));
}
}
下面是我得到的控制台错误
[RemoteTestNG] detected TestNG version 7.0.1
FAILED CONFIGURATION: @BeforeMethod setUp
java.lang.NullPointerException
at com.mercury.qa.base.TestBase.initialization(TestBase.java:50)
at com.mercury.qa.testcases.LoginPageTest.setUp(LoginPageTest.java:31)
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.MethodInvocationHelper.invokeMethodConsideringTimeout(MethodInvocationHelper.java:63)
at org.testng.internal.ConfigInvoker.invokeConfigurationMethod(ConfigInvoker.java:348)
at org.testng.internal.ConfigInvoker.invokeConfigurations(ConfigInvoker.java:302)
at org.testng.internal.TestInvoker.runConfigMethods(TestInvoker.java:695)
at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:523)
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 org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:115)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)
SKIPPED CONFIGURATION: @AfterMethod tearDown
SKIPPED CONFIGURATION: @BeforeMethod setUp
SKIPPED CONFIGURATION: @AfterMethod tearDown
SKIPPED CONFIGURATION: @BeforeMethod setUp
SKIPPED CONFIGURATION: @AfterMethod tearDown
SKIPPED: loginPageTitleTest
java.lang.NullPointerException
at com.mercury.qa.base.TestBase.initialization(TestBase.java:50)
at com.mercury.qa.testcases.LoginPageTest.setUp(LoginPageTest.java:31)
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.MethodInvocationHelper.invokeMethodConsideringTimeout(MethodInvocationHelper.java:63)
at org.testng.internal.ConfigInvoker.invokeConfigurationMethod(ConfigInvoker.java:348)
at org.testng.internal.ConfigInvoker.invokeConfigurations(ConfigInvoker.java:302)
at org.testng.internal.TestInvoker.runConfigMethods(TestInvoker.java:695)
at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:523)
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 org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:115)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)
SKIPPED: mercuryImageLogoTest
java.lang.NullPointerException
at com.mercury.qa.base.TestBase.initialization(TestBase.java:50)
at com.mercury.qa.testcases.LoginPageTest.setUp(LoginPageTest.java:31)
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.MethodInvocationHelper.invokeMethodConsideringTimeout(MethodInvocationHelper.java:63)
at org.testng.internal.ConfigInvoker.invokeConfigurationMethod(ConfigInvoker.java:348)
at org.testng.internal.ConfigInvoker.invokeConfigurations(ConfigInvoker.java:302)
at org.testng.internal.TestInvoker.runConfigMethods(TestInvoker.java:695)
at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:523)
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 org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:115)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)
SKIPPED: loginTest
java.lang.NullPointerException
at com.mercury.qa.base.TestBase.initialization(TestBase.java:50)
at com.mercury.qa.testcases.LoginPageTest.setUp(LoginPageTest.java:31)
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.MethodInvocationHelper.invokeMethodConsideringTimeout(MethodInvocationHelper.java:63)
at org.testng.internal.ConfigInvoker.invokeConfigurationMethod(ConfigInvoker.java:348)
at org.testng.internal.ConfigInvoker.invokeConfigurations(ConfigInvoker.java:302)
at org.testng.internal.TestInvoker.runConfigMethods(TestInvoker.java:695)
at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:523)
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 org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:115)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)
===============================================
Default test
Tests run: 3, Failures: 0, Skips: 3
Configuration Failures: 1, Skips: 5
===============================================
===============================================
Default suite
Total tests run: 3, Passes: 0, Failures: 0, Skips: 3
Configuration Failures: 1, Skips: 5
===============================================
【问题讨论】：
-
欢迎来到stackoverflow。仅查看您发布的代码不足以说明这里出了什么问题。尝试添加错误堆栈跟踪。另外，尝试在您的问题中显示
TestBase类的initialization()方法。 -
TestBase类中的第 50 行是什么？在stackoverflow中，我们看不到行号。你能在 cmets 中说出那条线吗？您的错误堆栈跟踪显示您在TestBase的第 50 行有空指针异常。 -
您好，我已经在上面的TestBase() 类中给出了initialization() 方法。第 50 行是 driver.manage().window().maximize();在 TestBase() 类中。如果您需要更多信息，请告诉我。谢谢
-
如果可能，尝试调试您的应用程序。因为第 50 行：
driver.manage().window().maximize()正在抛出 NPE，那么这意味着，driver或driver.manage()或driver.manage().window()为空。这里有 3 种可能性.. 尝试逐步检查您得到null的确切位置。 -
最可能的原因是在 browser==chrome 的情况下（以及与 Firefox 不同的其他情况）缺少
driver的初始化。
标签： java eclipse maven selenium testng