1.准备工作

Oracle数据库“TBYZB_FIELD_PRESSURE”表中数据如图：

Excel模板(201512.xls)：

2.任务说明

我们要完成的任务就是将表“TBYZB_FIELD_PRESSURE”中的数据，按照Excel模板(201512.xls)的样式导入到一个新的Excel中。即：Excel模板(201512.xls)不改变，生成一个和它一样的Excel并且导入数据。

3.关键代码

// 使用FieldPressEntity中的每一个entity，一个entity包含了所有属性 public void insertintoExcel(String yyyy, String mm) throws Exception { List<FieldPressEntity> result = tyFieldPressDao.search(yyyy, mm); // 读取Excel的模板 HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(new File( "D:/201512.xls"))); HSSFSheet sheet = null; // 读取sheet的模板 sheet = workbook.getSheetAt(0); // 定义行 HSSFRow row; // 定义单元格 HSSFCell cell; // for循环，循环目标为行循环 for (int i = 0; i < result.size(); i++) { System.out.println(result.size()); // 给e循环赋值 FieldPressEntity e = result.get(i); // 循环行 row = sheet.getRow(3 + i); // 给行内的单元格赋值 cell = row.getCell(1); cell.setCellValue(e.getH17()); System.out.println(i + "i内+" + e.getH17()); cell = row.getCell(2); cell.setCellValue(e.getH18()); System.out.println(i + "i内+" + e.getH18()); cell = row.getCell(3); cell.setCellValue(e.getH19()); System.out.println(i + "i内+" + e.getH19()); cell = row.getCell(4); cell.setCellValue(e.getH20()); System.out.println(i + "i内+" + e.getH20()); cell = row.getCell(5); cell.setCellValue(e.getH21()); System.out.println(i + "i内+" + e.getH21()); cell = row.getCell(6); cell.setCellValue(e.getH22()); System.out.println(i + "i内+" + e.getH22()); cell = row.getCell(7); cell.setCellValue(e.getH23()); System.out.println(i + "i内+" + e.getH23()); cell = row.getCell(8); cell.setCellValue(e.getH00()); System.out.println(i + "i内+" + e.getH00()); cell = row.getCell(9); cell.setCellValue(e.getH01()); System.out.println(i + "i内+" + e.getH01()); cell = row.getCell(10); cell.setCellValue(e.getH02()); System.out.println(i + "i内+" + e.getH02()); cell = row.getCell(11); cell.setCellValue(e.getH03()); System.out.println(i + "i内+" + e.getH03()); cell = row.getCell(12); cell.setCellValue(e.getH04()); System.out.println(i + "i内+" + e.getH04()); cell = row.getCell(13); cell.setCellValue(e.getH05()); System.out.println(i + "i内+" + e.getH05()); cell = row.getCell(14); cell.setCellValue(e.getH06()); System.out.println(i + "i内+" + e.getH06()); cell = row.getCell(15); cell.setCellValue(e.getH07()); System.out.println(i + "i内+" + e.getH07()); cell = row.getCell(16); cell.setCellValue(e.getH08()); System.out.println(i + "i内+" + e.getH08()); cell = row.getCell(17); cell.setCellValue(e.getH09()); System.out.println(i + "i内+" + e.getH09()); cell = row.getCell(18); cell.setCellValue(e.getH10()); System.out.println(i + "i内+" + e.getH10()); cell = row.getCell(19); cell.setCellValue(e.getH11()); System.out.println(i + "i内+" + e.getH11()); cell = row.getCell(20); cell.setCellValue(e.getH12()); System.out.println(i + "i内+" + e.getH12()); cell = row.getCell(21); cell.setCellValue(e.getH13()); System.out.println(i + "i内+" + e.getH13()); cell = row.getCell(22); cell.setCellValue(e.getH14()); System.out.println(i + "i内+" + e.getH14()); cell = row.getCell(23); cell.setCellValue(e.getH15()); System.out.println(i + "i内+" + e.getH15()); cell = row.getCell(24); cell.setCellValue(e.getH16()); System.out.println(i + "i内+" + e.getH16()); cell = row.getCell(25); cell.setCellValue(e.getDaily_sum()); System.out.println(i + "i内+" + e.getDaily_sum()); cell = row.getCell(26); cell.setCellValue(e.getDaily_avg()); System.out.println(i + "i内+" + e.getDaily_avg()); cell = row.getCell(27); cell.setCellValue(e.getDaily_max()); System.out.println(i + "i内+" + e.getDaily_max()); cell = row.getCell(28); cell.setCellValue(e.getDaily_min()); System.out.println(i + "i内+" + e.getDaily_min()); } // 写入一个新的Excel表内 FileOutputStream out = new FileOutputStream(new File("E:/"+yyyy+mm+".xls")); // Excel表写入完成 workbook.write(out); // Excel表退出 out.close(); }

总结：我们这个项目用的是ssh架构，如果想使用以上代码，需要按照ssh的规范，定义dao action service entity四个包，如果需要页面操作还需要js做页面。

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