java导出Excel例子(poi)

源:wenku.baidu.com/view/43e7676825c52cc58bd6be99.html

评:

public class creatFile {
    static public void main(String[] args) throws Exception {

        FileOutputStream fos = new FileOutputStream("d:\\creatFile.xls");
        HSSFWorkbook wb = new HSSFWorkbook();
        HSSFSheet s = wb.createSheet();
        wb.setSheetName(0, "first sheet");
        HSSFRow row = s.createRow(0);
        HSSFCell cell = row.createCell((short)0);
        cell.setCellValue("Hello! This message is generated from POI.");
        wb.write(fos);
        fos.close();
    }
}

public class AppendFile {

    public static void main(String[] args) throws FileNotFoundException, IOException
    {       
        POIFSFileSystem fs =new POIFSFileSystem(new FileInputStream("d:\\test.xls"));   
     
        //  创建一个新的Excel
        HSSFWorkbook wb = new HSSFWorkbook(fs);
       
        //  在所创建的Excel中新建一个sheet页
        HSSFSheet sheet = wb.getSheetAt(0);
       
        //  取该sheet页的第13行
        HSSFRow row = sheet.getRow(12);
       
        //  第8列的单元格
        HSSFCell cell = row.getCell((short)7);

        System.out.println(cell);
        String    src    = "单元格";
       
        //  在所取得单元格中书写内容
        cell.setEncoding(HSSFCell.ENCODING_UTF_16);
        cell.setCellValue(src);
       
     
        // Write the output to a file
        FileOutputStream fileOut = new FileOutputStream("d:\\ww.xls");
       
        wb.write(fileOut);
       
        fileOut.close();
    }
}

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转载自mauersu.iteye.com/blog/1807361
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