Question

我有一张excel工作表，我需要根据特定列的单元格值来获取行。例如，我有一个名为city和employee _ name的列。我将使用我的Java代码提供city值，它应该获取指定列中具有city值的所有行。列名将被修复。

Example:
City    Employee_Name Age
Vegas   Tom           23
Vegas   Ron           43
Vegas   Sam           19
Delhi   Rohit         32
Delhi   Ram           28
Jaipur  Ankit         31

所以，如果我从我的Java代码中将单元格值作为Vegas赋予它，那么它应该取给我1,2和1行。 3.

Answer 1

把它放在你的项目poi-2.5.1.jar
尝试在struts中使用此方法Action其他你可以简单地在简单类中使用它来避免/删除方法参数中的HttpSession参数

void uploadBulkQuestions（ExcelUploadForm excelUploadForm，String filePath，HttpSession session）抛出SQLException //你可以忽略参数中的ExcelUploadForm obj { ExcelForm excelForm = null; / ** * //这里ExcelForm是一个带有setter和getter的简单pojo * * public class ExcelForm扩展ActionForm { *弦城; * String employeeName; *整数年龄; * //以上变量的setter和getter。 *} * / short CityPosition = 0; short Employee_NamePosition = 1; 短AgePosition = 2; 连接con = null; ArrayList invalidFields = new ArrayList（）; ArrayList validFields = new ArrayList（）; boolean bulkUploadFlag = true;

try
{
    FileInputStream fs =new FileInputStream(filePath+"\\"+excelUploadForm.getExcelFile().getFileName());//here you can give ur ExcelFile Path{like--"D:\ExcelFiles\sample.xls"}(excelUploadForm in method parameter is an another form which pics a file through browse(i.e.,File Upload))) 

    HSSFWorkbook wb = new HSSFWorkbook(fs);
    for (int k = 0; k < wb.getNumberOfSheets(); k++)
    {
        HSSFSheet sheet = wb.getSheetAt(k);
        int rows  = sheet.getPhysicalNumberOfRows();
        HSSFRow firstRow   = sheet.getRow(0);
        int totalCells = firstRow.getPhysicalNumberOfCells(); 
        for(short i=0;i<totalCells;i++)
        {
            HSSFCell firstCell;
            firstCell=firstRow.getCell(i);
                 if(firstCell.getStringCellValue().trim().equalsIgnoreCase("City"))
                {CityPosition=i;System.out.println("HSSFCellqidpos"+City);}
            else if(firstCell.getStringCellValue().trim().equalsIgnoreCase("Employee_Name"))
                Employee_NamePosition=i;
            else if(firstCell.getStringCellValue().trim().equalsIgnoreCase("Age"))
                AgePosition=i;
        }

        for (int r = 1; r < rows; r++)
        {
            excelForm = new ExcelForm();
            HSSFRow row   = sheet.getRow(r);
            HSSFCell cell;  
            if(CityPosition>=0)
            {
                cell= row.getCell(CityPosition);
                try{
                excelForm.setCity(cell.getStringCellValue());
                System.out.println("Check the Data of city"+excelForm.getCity());
            }catch(NullPointerException nullPointerException){
                nullPointerException.printStackTrace();
            }
            }

            if(Employee_NamePosition>0)
            {
                cell= row.getCell(Employee_NamePosition);
                try{
                excelForm.setEmployeeName(cell.getStringCellValue());
            }catch(NullPointerException nullPointerException){
                nullPointerException.printStackTrace();
            }
            }

            if(AgePosition>0)
            {
                cell= row.getCell(AgePosition);
                try{
                excelForm.setAge((int)cell.getNumericCellValue());
            }catch(NullPointerException nullPointerException){
                nullPointerException.printStackTrace();
            }
            }

            //Validating Excel Data
            if(excelForm.getCity()==null || excelForm.getEmployeeName()==null || excelForm.getAge() < 0)
            {
                System.out.println("inside invalidFields.........");
                System.out.println(excelForm);
                invalidFields.add(excelForm);
                bulkUploadFlag=false;
            }
            else
            {   
            System.out.println("inside validQue.........");
            System.out.println(excelForm);  
            validFields.add(excelForm);
            }

        }



    }




    //Transaction Management to make sure all the validFields ArrayList obj data is inserted

    if(bulkUploadFlag)
    {
        con.setAutoCommit(false);

        try
        {
            //fetch data from validFields Array List Using iterator and insert into DB if u wish to do so...
            Iterator fieldsIterator=  validFields.iterator();
            excelForm =null;
            while(questionIterator.hasNext())
                {

                excelForm=(excelForm)fieldsIterator.next();                     
                    //storing in Questions DB table
                    PreparedStatement psFields = con.prepareStatement("........");//write ur query to insert
                    psFields.executeUpdate();

        }

        // If there is no error.
        con.commit();
        session.setAttribute("ValidFields", validFields);

        }
        catch(SQLException se)
        {
            // If there is any error.
             con.rollback();
             se.printStackTrace();
             session.setAttribute("BulkUploadError","No Data Uploded due to Some Errors in Excel File");     
        }
    }
    else
    {
        session.setAttribute("InvalidFields",invalidFields);

    }
}
catch(Exception e)
{
    e.printStackTrace();
}
finally
{
    con.close();
}

return null;

}

Answer 2

您可以使用以下方法。 “sheet”是您需要执行搜索的工作表， “colName”是列的名称，根据您的要求，它将被修复。和“textToFind”是你必须在colName列中找到的文本。

public static XSSFRow test(XSSFSheet sheet, String colName, String textToFind){
    int colIndex=0;
    for (int colNum = 0; colNum<=sheet.getRow(0).getLastCellNum();colNum++){
        if (sheet.getRow(0).getCell(colNum).toString().equalsIgnoreCase(colName)){
            colIndex = colNum;
            break;
        }
    }
    for (int RowNum = 0; RowNum<sheet.getLastRowNum();RowNum++){
        if(sheet.getRow(RowNum).getCell(colIndex).toString().equalsIgnoreCase(textToFind)){
            return sheet.getRow(RowNum);
        }
    }
    System.out.println("No any row found that contains "+textToFind);
    return null;
}

根据单个单元格值获取整个Excel行

2 个答案: