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我有一张excel工作表，我需要根据特定列的单元格值从中获取行。例如，我有一个名为city和employee_name 的列。我将使用我的 Java 代码提供值，它应该获取在指定列city中具有该值的所有行。city列名将被固定。

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

因此，如果我从我的 Java 代码中将单元格值设为 Vegas，那么它应该获取第 1,2 和 3 行。

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2 回答 2

2

您可以使用以下方法。“sheet”是您需要在其中执行搜索的工作表，“colName”是列的名称，根据您的要求，它将被固定。“textToFind”是您必须在 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;
}
于 2013-06-24T17:47:19.397 回答
1
  1. 把它放在你的项目 poi-2.5.1.jar 的 lib 文件夹中
  2. 尝试在 struts Action 中使用此方法，否则您可以简单地在简单的类中使用它，避免/删除方法参数中的 HttpSession 参数

  3. void uploadBulkQuestions(ExcelUploadForm excelUploadForm,String filePath,HttpSession session) throws SQLException//可以忽略参数中的ExcelUploadForm obj { ExcelForm excelForm=null; /** * //这里的ExcelForm是一个简单的带有setter和getter的pojo * *public class ExcelForm extends ActionForm { *String city; *字符串员工姓名；*整数年龄；* //上述变量的setter和getter。* } */ 短 CityPosition=0; 短 Employee_NamePosition=1; 短年龄位置=2；连接 con=null; ArrayList invalidFields=new ArrayList(); ArrayList 有效字段=新 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;

    }

于 2013-06-15T07:03:30.337 回答