使用Excel在Dataprovider中获取空指针？

时间：2018-12-02 17:44:20

标签： selenium testng testng-dataprovider

我正在尝试使用数据驱动的框架从excel文件中读取数据并将其传递给网页表单，在我的框架中，我拥有基类，并且在其中调用浏览器实例，然后使用自定义方法销毁了它，并且进一步有一个名为“ excelutility” 的单独模块，其中包含两个Java文件，第一个称为“ excelSetup” ，用于定义所有方法，例如从单元格读取数据，查找总数的方法。行和列的类代码如下：-

public class ExcelSetup {

     FileInputStream fis;
     XSSFWorkbook wb;
     XSSFSheet sheet;
     CellType type;
     XSSFCell cell;

    public ExcelSetup(String excelPath, int sheetIndex){
        try{
            fis=new FileInputStream(excelPath);
            wb= new XSSFWorkbook(fis);
            sheet=wb.getSheetAt(sheetIndex);
        }catch (IOException e){
            System.out.println("The error message is "+e.getMessage());
            System.out.println("The cause of error is "+e.getCause());
            e.getStackTrace();
        }
    }

    public int getcolumncount(){
        int colcount=0;
        try{

            colcount=sheet.getRow(0).getLastCellNum();
            System.out.println("The total number of columns are "+colcount);

        }catch (Exception e){
            System.out.println("The error message is "+e.getMessage());
            System.out.println("The cause of error is "+e.getCause());
            e.getStackTrace();
        }

        return colcount;
    }

    public int getRowcount()  {
        int rowCount=0;
        try {
             rowCount=sheet.getPhysicalNumberOfRows();
            System.out.println("The total number of rows are "+rowCount);

        }catch (Exception e){
            System.out.println("The error message is "+e.getMessage());
            System.out.println("The cause of error is "+e.getCause());
            e.getStackTrace();
        }

        return rowCount;
    }

    public String getCellData(int rowNo, int colNo){
        String strdata = null;
        Double data=0.0;
        cell=sheet.getRow(rowNo).getCell(colNo);
        type=cell.getCellType();
        if (type==CellType.STRING){
           strdata=cell.getStringCellValue();
        }

        else if (type==CellType.NUMERIC){
            cell.setCellType(CellType.STRING);
            strdata=cell.getStringCellValue();
        }
        return strdata;
    }
}

另一个类被称为“ excelDataprovider”，用于创建和设置可用于提供测试类中数据的数据提供器

代码如下：-

public class ExcelDataprovider {

    @DataProvider(name = "namedata")
    public Object[][] createnameData(){
        String sheetpath=System.getProperty("user.dir")+"/configurations/data.xlsx";
        Object data[][]=getData(sheetpath,0);
        return data;
    }

    public Object[][] getData(String excelPath,int sheetindex){

        ExcelSetup obj=new ExcelSetup(excelPath,sheetindex);
        int rowCount=obj.getRowcount();
        int colCount=obj.getcolumncount();

        Object[][]data=new Object[rowCount][colCount];

        for (int i = 1; i <rowCount ; i++) {
            for (int j = 0; j <colCount ; j++) {
             String cellData=obj.getCellData(i,j);
                System.out.print(cellData+" | ");
                data[i-1][j]=cellData;
            }

            System.out.println(" ");
        }
        return data;
    }
}

使用dataprovider的类是testclass，其代码如下：-

public class VerifyRegisterpage {

    String title="Register: Mercury Tours";

@Test(dataProviderClass = ExcelDataprovider.class,dataProvider = 
 "namedata",priority=1,description="This test will submit by entering name")

 public void checknamesubmit(String firstname,String lastname) throws 
 IOException
    {
        WebDriver driver=PagefactoryBase.startbrowser();
        Registration register=PageFactory.initElements(driver, 
        Registration.class);
        register.clickregisterlink();
        register.checkregisterpagetitle(title);
        register.checkregisterpageimage();
        register.submitbyentername(firstname,lastname);

    }
}

问题是我能够读取在excel中写入的一组数据或一行数据，但读取一行后它读取一个空行并向dataprovider提供空值，结果我得到了nullpointerexception。控制台输出为：-

The total number of rows are 2
The total number of columns are 2
srikant | chaturvedi |  
Browser Instance Created
Starting ChromeDriver 2.37.544315 (730aa6a5fdba159ac9f4c1e8cbc59bf1b5ce12b7) on port 39207
Only local connections are allowed.
Dec 02, 2018 10:47:16 PM org.openqa.selenium.remote.ProtocolHandshake createSession
Chrome driver instance initialized
INFO: Detected dialect: OSS
 INFO 2018-12-02 22:47:21,191 Registration.java [main] com.pageobjects.Registration:55 - Registration page title checked
 INFO 2018-12-02 22:47:21,231 Registration.java [main] com.pageobjects.Registration:63 - Register page image has been validated
 INFO 2018-12-02 22:47:26,961 Registration.java [main] com.pageobjects.Registration:108 - Registration URL has been validated successfully
 INFO 2018-12-02 22:47:26,961 Registration.java [main] com.pageobjects.Registration:79 - submit by entering name is done
 INFO 2018-12-02 22:47:28,565 Registration.java [main] com.pageobjects.Registration:55 - Registration page title checked
 INFO 2018-12-02 22:47:28,605 Registration.java [main] com.pageobjects.Registration:63 - Register page image has been validated

org.openqa.selenium.WebDriverException: unknown error: keys should be a string
  (Session info: chrome=70.0.3538.110)
  (Driver info: chromedriver=2.37.544315 (730aa6a5fdba159ac9f4c1e8cbc59bf1b5ce12b7),platform=Windows NT 10.0.17134 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 0 milliseconds
Build info: version: '3.10.0', revision: '176b4a9', time: '2018-03-02T19:03:16.397Z'
System info: host: 'KESHAVPC', ip: '192.168.228.2', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_144'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities {acceptInsecureCerts: false, acceptSslCerts: false, applicationCacheEnabled: false, browserConnectionEnabled: false, browserName: chrome, chrome: {chromedriverVersion: 2.37.544315 (730aa6a5fdba15..., userDataDir: C:\Users\HP\AppData\Local\T...}, cssSelectorsEnabled: true, databaseEnabled: false, handlesAlerts: true, hasTouchScreen: false, javascriptEnabled: true, locationContextEnabled: true, mobileEmulationEnabled: false, nativeEvents: true, networkConnectionEnabled: false, pageLoadStrategy: normal, platform: XP, platformName: XP, rotatable: false, setWindowRect: true, takesHeapSnapshot: true, takesScreenshot: true, unexpectedAlertBehaviour: , unhandledPromptBehavior: , version: 70.0.3538.110, webStorageEnabled: true}
Session ID: 307437e89f8c3d905d650384f734db4c

    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:214)
    at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:166)
    at org.openqa.selenium.remote.http.JsonHttpResponseCodec.reconstructValue(JsonHttpResponseCodec.java:40)
    at org.openqa.selenium.remote.http.AbstractHttpResponseCodec.decode(AbstractHttpResponseCodec.java:80)
    at org.openqa.selenium.remote.http.AbstractHttpResponseCodec.decode(AbstractHttpResponseCodec.java:44)
    at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:160)
    at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:601)
    at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:279)
    at org.openqa.selenium.remote.RemoteWebElement.sendKeys(RemoteWebElement.java:100)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.openqa.selenium.support.pagefactory.internal.LocatingElementHandler.invoke(LocatingElementHandler.java:51)
    at com.sun.proxy.$Proxy8.sendKeys(Unknown Source)
    at com.pageobjects.Registration.Entername(Registration.java:116)
    at com.pageobjects.Registration.submitbyentername(Registration.java:75)
    at com.register.VerifyRegisterpage.checknamesubmit(VerifyRegisterpage.java:36)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:124)
    at org.testng.internal.Invoker.invokeMethod(Invoker.java:580)
    at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:716)
    at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:988)
    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.IDEARemoteTestNG.run(IDEARemoteTestNG.java:72)
    at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:123)


===============================================
Default Suite
Total tests run: 2, Failures: 1, Skips: 0
===============================================

请参阅项目结构ProjectStructure的屏幕截图

请参阅Excel工作表数据excelsheet的屏幕截图

请参阅空数据值Nulldatavalue的屏幕截图

1 个答案:

答案 0 :(得分：0)

您有一个初始化object [] []实例的问题。更改此

Object[][]data=new Object[rowCount][colCount];

到

Object[][]data=new Object[rowCount-1][colCount];
相关问题
最新问题