POI导入导出小案例

Posted 2020-10-22 xh_Blog

一、HSSF  97-2003
      需要jar:poi-3.9.jar
      简单示例：生成EXCEL
            //93---2003
            String [] titlie={"id","name","sex"};
            //创建Excel工作簿
            HSSFWorkbook  workBook=new HSSFWorkbook();
            //创建一个Sheet页
            HSSFSheet  sheet=workBook.createSheet();
            //创建第一行
            HSSFRow  row=sheet.createRow(0);
            //定义单元格
            HSSFCell  cell=null;
            //插入第一行数据id，name,sex
            for (int i = 0; i < titlie.length; i++) {
                cell=row.createCell(i);
                cell.setCellValue(titlie[i]);
            }
            //追加数据
            for(int i=1;i<10;i++){
                HSSFRow   nextrow=sheet.createRow(i);
                HSSFCell  cell2=nextrow.createCell(0);
                cell2.setCellValue("a"+i);
                cell2=nextrow.createCell(1);
                cell2.setCellValue("user"+i);
                cell2=nextrow.createCell(2);
                cell2.setCellValue("男");
            }
            
            //创建一个文件
            File  file=new File("C:/Users/Administrator/Desktop/POI_test.xls");
            try {
                file.createNewFile();
                FileOutputStream stream=FileUtils.openOutputStream(file);
                workBook.write(stream);
                stream.close();
                System.out.println(">>>结束");
            } catch (IOException e) {
                e.printStackTrace();
            }

解析EXCEL
        //93---2003
        //引入需要解析的Excel文件
        File  file=new File("C:/Users/Administrator/Desktop/POI_test.xls");
        try {
            //创建Excel,读取文件内容
            HSSFWorkbook   workbook=
                    new HSSFWorkbook(FileUtils.openInputStream(file));
        //HSSFSheet  sheet=workbook.getSheet("");//名称或者（获取第一个工作表）
        HSSFSheet sheet=workbook.getSheetAt(0);
        int firstRowNum=0;
        //获取sheet中最后银行行号
        int lastRowNum=sheet.getLastRowNum();
        for (int i = firstRowNum; i < lastRowNum; i++) {
            HSSFRow  row=sheet.getRow(i);
            //获取当前行最后单元格列号
            int lastCellNum=row.getLastCellNum();
            for(int j=0;j<lastCellNum;j++){
                HSSFCell  cell=row.getCell(j);
                String value=cell.getStringCellValue();
                System.err.print(value+"  >>");
            }
            System.err.println();
        }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
                
-----------------------------------------------------------------------------------------------------------

2007------生成EXCEL
需要JAR:


    //2007
            String [] titlie={"id","name","sex"};
            //创建Excel工作簿
            XSSFWorkbook  workBook=new XSSFWorkbook();
            //创建一个Sheet页
            Sheet  sheet=workBook.createSheet();
            //创建第一行
            Row  row=sheet.createRow(0);
            //定义单元格
            Cell  cell=null;
            //插入第一行数据id，name,sex
            for (int i = 0; i < titlie.length; i++) {
                cell=row.createCell(i);
                cell.setCellValue(titlie[i]);
            }
            //追加数据
            for(int i=1;i<10;i++){
                Row   nextrow=sheet.createRow(i);
                Cell  cell2=nextrow.createCell(0);
                cell2.setCellValue("a"+i);
                cell2=nextrow.createCell(1);
                cell2.setCellValue("user"+i);
                cell2=nextrow.createCell(2);
                cell2.setCellValue("男");
            }
            
            //创建一个文件
            File  file=new File("C:/Users/Administrator/Desktop/POI_test07Last.xlsx");
            try {
                file.createNewFile();
                FileOutputStream stream=FileUtils.openOutputStream(file);
                workBook.write(stream);
                stream.close();
                System.out.println(">>>结束");
            } catch (IOException e) {
                e.printStackTrace();
            }
            
相关jar下载地址
http://download.csdn.net/detail/yjaspire/9534540