在Java中使用Apache POI从数字单元格读取整数 [英] Read integer from numeric cell using Apache POI in java

问题描述

我有一个使用apache poi读取xls表的应用程序.当单元格具有数值时，我通过row.getCell(i).getNumericValue()进行读取.但是它返回浮点数.像如果单元格值为1，则返回1.0.我可以将其转换为int吗?任何帮助，将不胜感激.我尝试了Integer.parseInt(value)-，但是它抛出NumberFormat异常.感谢您的帮助.以下是伪代码:

I have an application which reads xls sheet using apache poi. When the cell has numeric value, i read it by row.getCell(i).getNumericValue(). But it returns floating point digit. like if the cell value is 1, it returns 1.0. Can i convert it to int ? Any helpwould be appreciated. I tried Integer.parseInt(value)- but it throws NumberFormat exception.Any help is appreciated.Here is the pseudo code:

FileInputStream file = new FileInputStream(new File("C:\\test.xls"));
HSSFWorkbook workbook = new HSSFWorkbook(file);
HSSFSheet sheet = workbook.getSheetAt(0);
Iterator<Row> rowIterator = sheet.iterator();
while(rowIterator.hasNext()) {
    Row row = rowIterator.next();
    Iterator<Cell> cellIterator = row.cellIterator();
    while(cellIterator.hasNext()) {
        Cell cell = cellIterator.next();
        switch(cell.getCellType()) {
            case Cell.CELL_TYPE_NUMERIC:
                String value= String.valueOf(cell.getNumericCellValue());
                int intVal = Integer.parseInt(value)-->>throws Exception

推荐答案

您可以使用简单的步骤将int值读取为字符串apache poi

You can read int value as string apache poi using simple steps

首先使用以下方法计算工作表中的行

First count rows in sheets using below method

private  int getRowCount(Sheet currentSheet) {
        int rowCount = 0;
        Iterator<Row> rowIterator = currentSheet.iterator();

        while(rowIterator.hasNext()) {  
            Row row = rowIterator.next();

            if(row == null || row.getCell(0) == null || row.getCell(0).getStringCellValue().trim().equals("") || row.getCell(0).toString().trim().equals("") 
                    || row.getCell(0).getCellType()==Cell.CELL_TYPE_BLANK){
                break;
            }
            else
                rowCount=rowCount + 1;
        }       
        return rowCount;
    }

然后在您的方法中使用以下代码

Then use below code in your method

    Workbook workbook = WorkbookFactory.create(new File("c:/test.xls");
    Sheet marksSheet = (Sheet) workbook.getSheet("Sheet1");
            int zoneLastCount = 0;
            if(marksSheet !=null ) {
                zoneLastCount = getRowCount(marksSheet);
            }
    int zone = zoneLastCount-1;
    int column=1

    for(int i = 0; i < zone; i++) {         
        Row currentrow = marksSheet.getRow(i);
        double year = Double.parseDouble(currentrow.getCell(columnno).toString());
        int year1 = (int)year;
        String str = String.valueOf(year1);
    }

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