使用面向 java.lang.NullPointerException 的 log4j

如何解决使用面向 java.lang.NullPointerException 的 log4j

我遇到了 java.lang.NullPointerException 的问题。我已尽可能多地尝试，但我
无法解决此问题。我正在为我的项目实施 POM 模型（Selenium）。

代码：登录测试

public class TC_LoginTest_001 extends BaseClass
{
    @Test
    public void logintest()
    {
        driver.get(baseURL);
        
        logger.info("ClikSource For Candidates Application Launched");
        
        LoginPage lp = new LoginPage(driver);
        
        lp.clickEmailLogin();
        
        lp.setUserName(username);
        logger.info("Entered Email ID");
        
        lp.setPassword(password);
        logger.info("Entered Password");
        
        lp.clickLogin();
        
        if(driver.getTitle().equals("ClikSource For Candidates"))
        {
            Assert.assertTrue(true);
            logger.info("Login Test Passed");
        }
        else
        {
            Assert.assertTrue(false);
            logger.info("Login Test Failed");
        }
    }
}

控制台：错误日志

java.lang.NullPointerException

    at <br /> com.enterprisecandidate.testCases.TC_LoginTest_001.loginTest(TC_LoginTest_001.java:15)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at <br /> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at <br /> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at <br /> 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:1540)
    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)

请帮忙解决问题