在for循环中获取“空指针异常”

时间:2018-07-17 13:10:01

标签: java testng

public class Test_001 extends DriverInstance  {

      @Test(dataProvider="Excel")
    public void tc_001(String UserName, String Password) throws Exception {
        LoginPage login= new LoginPage(driver);
        login.enterUsername(UserName);
        login.enterPassword(Password);
        login.clickSignin();
    }


    @DataProvider(name="Excel")
        public  Object [][] testDataGenerator() throws Exception {

            FileInputStream file= new FileInputStream("./TestData/TestData.xlsx");
            XSSFWorkbook workbook= new XSSFWorkbook(file);
            XSSFSheet loginSheet= workbook.getSheet("Login");
            int numberOfData= loginSheet.getPhysicalNumberOfRows();
            Object[][] testData=new Object[numberOfData][2];

            for(int i=0;i<numberOfData;i++) {
                System.out.println(i);
                XSSFRow row=loginSheet.getRow(i);
                XSSFCell username=row.getCell(0);
                XSSFCell password=row.getCell(1);
                testData[i][0]=username.getStringCellValue();

                testData[i][1]=password.getStringCellValue();   

            }
            return testData;

        }
}

出现以下错误:

[RemoteTestNG] detected TestNG version 6.14.2
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.apache.poi.openxml4j.util.ZipSecureFile$1 (file:/C:/Users/dell/.m2/repository/org/apache/poi/poi-ooxml/3.14/poi-ooxml-3.14.jar) to field java.io.FilterInputStream.in
WARNING: Please consider reporting this to the maintainers of org.apache.poi.openxml4j.util.ZipSecureFile$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
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[Utils] [ERROR] [Error] java.lang.NullPointerException
    at org.automations.testingworld.testcases.Test_001.testDataGenerator(Test_001.java:38)
    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:124)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:74)
    at org.testng.internal.MethodInvocationHelper.invokeMethodNoCheckedException(MethodInvocationHelper.java:45)
    at org.testng.internal.MethodInvocationHelper.invokeDataProvider(MethodInvocationHelper.java:131)
    at org.testng.internal.Parameters.handleParameters(Parameters.java:706)
    at org.testng.internal.ParameterHandler.handleParameters(ParameterHandler.java:49)
    at org.testng.internal.ParameterHandler.createParameters(ParameterHandler.java:37)
    at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:923)
    at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
    at org.testng.TestRunner.privateRun(TestRunner.java:648)
    at org.testng.TestRunner.run(TestRunner.java:505)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:455)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:450)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:415)
    at org.testng.SuiteRunner.run(SuiteRunner.java:364)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:84)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1208)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1137)
    at org.testng.TestNG.runSuites(TestNG.java:1049)
    at org.testng.TestNG.run(TestNG.java:1017)
    at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:114)
    at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
    at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)

SKIPPED: tc_001
java.lang.RuntimeException: java.lang.NullPointerException
    at org.testng.internal.MethodInvocationHelper.invokeMethodNoCheckedException(MethodInvocationHelper.java:49)
    at org.testng.internal.MethodInvocationHelper.invokeDataProvider(MethodInvocationHelper.java:131)
    at org.testng.internal.Parameters.handleParameters(Parameters.java:706)
    at org.testng.internal.ParameterHandler.handleParameters(ParameterHandler.java:49)
    at org.testng.internal.ParameterHandler.createParameters(ParameterHandler.java:37)
    at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:923)
    at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
    at org.testng.TestRunner.privateRun(TestRunner.java:648)
    at org.testng.TestRunner.run(TestRunner.java:505)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:455)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:450)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:415)
    at org.testng.SuiteRunner.run(SuiteRunner.java:364)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:84)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1208)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1137)
    at org.testng.TestNG.runSuites(TestNG.java:1049)
    at org.testng.TestNG.run(TestNG.java:1017)
    at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:114)
    at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
    at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)
Caused by: java.lang.NullPointerException
    at org.automations.testingworld.testcases.Test_001.testDataGenerator(Test_001.java:38)
    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:124)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:74)
    at org.testng.internal.MethodInvocationHelper.invokeMethodNoCheckedException(MethodInvocationHelper.java:45)
    ... 22 more

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测试运行:1,失败:0,跳过:1

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运行的总测试次数:1,失败次数:0,跳过次数:1

0 个答案:

没有答案