unable to handle blank cells while reading blank cell from excel in selenium? - selenium-webdriver

Question

I am trying to read values for excel but my excel file contains some blank cells when I try to read values for those files using dataprovider then I get nullpointer
Please let me know how to deal with these blank cells in excel file??
Please find my excel file as below:-
Please find attached my Page object file code as :-
Please find attached my excelutility code as below:-
public class XLUtility {
public static FileInputStream fi;
public static XSSFWorkbook wb;
public static XSSFSheet ws;
public static XSSFRow row;
public static XSSFCell cell;
public XLUtility(String xlfile,String xlsheet) throws IOException{
try {
FileInputStream Excelfile=new FileInputStream(xlfile);
wb=new XSSFWorkbook(Excelfile);
ws=wb.getSheet(xlsheet);
} catch (Exception e) {
e.getMessage();
e.printStackTrace();
}
}
public static void setExcelFile(String xlfile,String xlsheet) throws Exception {
try {
FileInputStream ExcelFile = new FileInputStream(xlfile);
wb = new XSSFWorkbook(ExcelFile);
ws = wb.getSheet(xlsheet);
} catch (Exception e){
System.out.println("Exception occured is"+e);
}
}
public int getRowCount() throws IOException
{
int rowcount=ws.getLastRowNum();
return rowcount;
}
public int getCellCount(int rownum) {
row=ws.getRow(rownum);
int cellcount=row.getLastCellNum();
return cellcount;
}
public String getCelldata(int rownum,int colnum) {
row=ws.getRow(rownum);
cell=row.getCell(colnum);
String data;
try
{
DataFormatter formatter = new DataFormatter();
String cellData = formatter.formatCellValue(cell);
return cellData;
}
catch (Exception e)
{
data="";
}
return data;
}
}
Please find my test class code as below:-
Please find console output as below:-
[RemoteTestNG] detected TestNG version 6.14.3
FAILED: loginDDT("BlaBla", "")
java.lang.NullPointerException
at org.openqa.selenium.support.pagefactory.DefaultElementLocator.findElement(DefaultElementLocator.java:69)
at org.openqa.selenium.support.pagefactory.internal.LocatingElementHandler.invoke(LocatingElementHandler.java:38)
at com.sun.proxy.$Proxy8.sendKeys(Unknown Source)
at com.AutomationTest.PageObjects.PageoneObjects.login(PageoneObjects.java:20)
at com.AutomationTest.Testcases.TC_App_001.loginDDT(TC_App_001.java:25)
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:583)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:719)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:989)
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:115)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)
FAILED: loginDDT("", "BlaBla")
java.lang.NullPointerException
at org.openqa.selenium.support.pagefactory.DefaultElementLocator.findElement(DefaultElementLocator.java:69)
at org.openqa.selenium.support.pagefactory.internal.LocatingElementHandler.invoke(LocatingElementHandler.java:38)
at com.sun.proxy.$Proxy8.sendKeys(Unknown Source)
at com.AutomationTest.PageObjects.PageoneObjects.login(PageoneObjects.java:20)
at com.AutomationTest.Testcases.TC_App_001.loginDDT(TC_App_001.java:25)
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:583)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:719)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:989)
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:115)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)
FAILED: loginDDT("BlaBla", "BlaBla")
java.lang.NullPointerException
at org.openqa.selenium.support.pagefactory.DefaultElementLocator.findElement(DefaultElementLocator.java:69)
at org.openqa.selenium.support.pagefactory.internal.LocatingElementHandler.invoke(LocatingElementHandler.java:38)
at com.sun.proxy.$Proxy8.sendKeys(Unknown Source)
at com.AutomationTest.PageObjects.PageoneObjects.login(PageoneObjects.java:20)
at com.AutomationTest.Testcases.TC_App_001.loginDDT(TC_App_001.java:25)
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:583)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:719)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:989)
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:115)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)

Answer 1

when reading for cell, need to cross check cell type. like below
public String getCellData(String sheetName,int colNum,int rowNum){
try{
if(rowNum <=0)
return "";
int index = workbook.getSheetIndex(sheetName);
if(index==-1)
return "";
sheet = workbook.getSheetAt(index);
row = sheet.getRow(rowNum-1);
if(row==null)
return "";
cell = row.getCell(colNum);
if(cell==null)
return "";
if(cell.getCellType()==Cell.CELL_TYPE_STRING)
return cell.getStringCellValue();
else if(cell.getCellType()==Cell.CELL_TYPE_NUMERIC || cell.getCellType()==Cell.CELL_TYPE_FORMULA ){
String cellText = String.valueOf(cell.getNumericCellValue());
if (HSSFDateUtil.isCellDateFormatted(cell)) {
// format in form of M/D/YY
double d = cell.getNumericCellValue();
Calendar cal =Calendar.getInstance();
cal.setTime(HSSFDateUtil.getJavaDate(d));
cellText =
(String.valueOf(cal.get(Calendar.YEAR))).substring(2);
cellText = cal.get(Calendar.MONTH)+1 + "/" +
cal.get(Calendar.DAY_OF_MONTH) + "/" +
cellText;
// System.out.println(cellText);
}
return cellText;
}else if(cell.getCellType()==Cell.CELL_TYPE_BLANK)
return "";
else
return String.valueOf(cell.getBooleanCellValue());
}
catch(Exception e){
e.printStackTrace();
return "row "+rowNum+" or column "+colNum +" does not exist in xls";
}
}