java - 当excel单元格中没有值时，显示错误

Question

我使用 HSSFWORKBOOK 从 Excel 获取数据。当单元格中没有数据时，错误显示为:

Exception in thread "main" java.lang.NullPointerException at ExecuteTestcase.Testcase_execute.main(Testcase_execute.java:47)

我的代码是:

Sheet guru99Sheet = file.readExcel("D:\\SampleFramework.xls");                                                                            
int rowCount = guru99Sheet.getLastRowNum()-guru99Sheet.getFirstRowNum();
for(int i=1;i<rowCount+1;i++) {
    Row row = guru99Sheet.getRow(i);
    //Check if the first cell contain a value, if yes, That means it is the new  testcase name
    if(row.getCell(0)==null) {
        //Print testcase detail on console
        System.out.println(row.getCell(1).toString()+"----"+ row.getCell(2).toString()+"----"+ row.getCell(3).toString()+"----"+ row.getCell(4).toString());
        //Call perform function to perform operation on UI
        operation.perform(allObjects, row.getCell(1).toString(), row.getCell(2).toString(), row.getCell(3).toString(), row.getCell(4).toString());
    } else {
        //Print the new testcase name when it started
        System.out.println("New Testcase->"+row.getCell(0).toString() +" Started");
    }
}

请帮我解决这个问题。

Answer 1

您收到错误是因为您的 row.getCell() 之一返回 null 并且您没有设置 Row.MissingCellPolicy .

您可能需要 row.getCell(1, org.apache.poi.ss.usermodel.Row.CREATE_NULL_AS_BLANK) 等。