Java匯入匯出資料到給定多sheet的excel檔案
阿新 • • 發佈：2018-12-10
JAVA程式實現匯入匯出資料到給定的EXCEL檔案模板中
首先建立一個maven專案，在pom.xml檔案中引入需要的包(這裡3.14版本的poi會有一些問題，在匯入07版本的excel時xmlbeans使用2.6.0及以上版本)：
<dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.12</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.12</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml-schemas</artifactId> <version>3.12</version> </dependency> <dependency> <groupId>org.apache.xmlbeans</groupId> <artifactId>xmlbeans</artifactId> <version>2.6.0</version> </dependency>準備好需要匯入的excel模板檔案：D://a.xlxs 。
關鍵程式碼： //把查詢出的資料匯出到給定的excel模板中 public byte[] exportExcel(int startIndex, String[] keys, Map<String, Object> data){ //獲取到模板檔案 File excel = PropertiesUtil.getFile("D://a.xlxs"); FileInputStream fis = new FileInputStream(excel); //建立excel XSSFWorkbook book = new XSSFWorkbook(fis); //keys是對應的匯出資料欄位，map中的key列表 for(int i=0; i<keys.length; k++){ String[] key = keys[i]; XSSFSheet sheet = book.getSheetAt(i); List<Map<String, Object>> list = data.get("list"+i); for(int j=0; j<list.size(); k++){ Row row = sheet.createRow(j+startIndex); Map<String, Object> map = list.get(j); for(int k=0; k<key.length; k++){ String s = map.get(key[k])+""; row.createCell(k).setCellValue(s); } } } } ByteArrayOutputStream os = new ByteArrayOutputStream(); try { wbs.write(os); } catch (IOException e) { e.printStackTrace(); } return os.toByteArray(); }檔案匯入 public Map<String, Object> importSeries(InputStream is, String[] keys, int startIndex) throws Exception{ Map<String, Object> map = new HashMap<String, Object>(); Workbook book = null; try { book = new XSSFWorkbook(is); } catch (IOException e) { book = new HSSFWorkbook(is); } for(int i=0; i<keys.length; i++){ List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); String[] key = keys[i]; Sheet sheet = book.getSheetAt(i); int totalRows = sheet.getLastRowNum(); for(int j = 0; j<totalRows; j++){ Row row = sheet.getRow(startIndex+j); if(row == null){ continue; } int totalCells = row.getLastCellNum(); Map<String, Object> map1 = new HashMap<String, Object>(); for(int k=0; k<totalCells; k++){ Cell cell = row.getCell(k); if(cell!=null){ map1.put(key[k], row.getCell(k).getStringCellValue()); } } list.add(map1); } map.put("list"+i, list); } return map; }匯出到檔案 private static void exportExcel(List<ZSMM_SRM_MAT_SYNC> list) throws IOException{ List<ZSMM_SRM_MAT_SYNC> list0 = list.subList(0, 20000); List<ZSMM_SRM_MAT_SYNC> list1 = list.subList(20000, 40000); List<ZSMM_SRM_MAT_SYNC> list2 = list.subList(40000, list.size()); List<Object> listx = new ArrayList<Object>(); listx.add(list0); listx.add(list1); listx.add(list2); for(int j=0; j<3; j++){ System.out.println(j); @SuppressWarnings("unchecked") List<ZSMM_SRM_MAT_SYNC> lists= (List<ZSMM_SRM_MAT_SYNC>) listx.get(j); XSSFWorkbook wb = new XSSFWorkbook(); XSSFSheet sheet = wb.createSheet("物料主資料"+j); sheet.setDefaultColumnWidth(20); //XSSFCellStyle style = wb.createCellStyle(); XSSFRow row = sheet.createRow(0); // style.setAlignment(XSSFCellStyle.ALIGN_CENTER); XSSFCell cell = row.createCell(0); cell.setCellValue("物料號"); cell = row.createCell(1); cell.setCellValue("物料描述"); cell = row.createCell(2); cell.setCellValue("建立日期"); cell = row.createCell(3); cell.setCellValue("刪除識別符號"); cell = row.createCell(4); cell.setCellValue("跨工廠物料狀態 "); cell = row.createCell(5); cell.setCellValue("物料型別"); cell = row.createCell(6); cell.setCellValue("物料組"); cell = row.createCell(7); cell.setCellValue("外部物料組"); cell = row.createCell(8); cell.setCellValue("基本計量單位"); cell = row.createCell(9); cell.setCellValue("採購訂單的計量單位 "); cell = row.createCell(10); cell.setCellValue("實驗室/設計室 "); cell = row.createCell(11); cell.setCellValue("毛重 "); cell = row.createCell(12); cell.setCellValue("淨重 "); cell = row.createCell(13); cell.setCellValue("重量單位 "); cell = row.createCell(14); cell.setCellValue("業務量 "); cell = row.createCell(15); cell.setCellValue("體積單位 "); cell = row.createCell(16); cell.setCellValue("長 "); cell = row.createCell(17); cell.setCellValue("寬 "); cell = row.createCell(18); cell.setCellValue("高"); cell = row.createCell(19); cell.setCellValue("物料描述-英 "); for (int i = 0; i < lists.size(); i++) { row = sheet.createRow(i + 1); row.createCell(0).setCellValue(lists.get(i).getMATNR()); row.createCell(1).setCellValue(lists.get(i).getMAKTX()); row.createCell(2).setCellValue(lists.get(i).getERSDA()+""); row.createCell(3).setCellValue(lists.get(i).getLVORM()); row.createCell(4).setCellValue(lists.get(i).getMSTAE()); row.createCell(5).setCellValue(lists.get(i).getMTART()); row.createCell(6).setCellValue(lists.get(i).getMATKL()); row.createCell(7).setCellValue(lists.get(i).getEXTWG()); row.createCell(8).setCellValue(lists.get(i).getMEINS()); row.createCell(9).setCellValue(lists.get(i).getBSTME()); row.createCell(10).setCellValue(lists.get(i).getLABOR()); row.createCell(11).setCellValue(lists.get(i).getBRGEW()+""); row.createCell(12).setCellValue(lists.get(i).getNTGEW()+""); row.createCell(13).setCellValue(lists.get(i).getGEWEI()); row.createCell(14).setCellValue(lists.get(i).getVOLUM()+""); row.createCell(15).setCellValue(lists.get(i).getVOLEH()); row.createCell(16).setCellValue(lists.get(i).getLENGTH()); row.createCell(17).setCellValue(lists.get(i).getWIDTH()); row.createCell(18).setCellValue(lists.get(i).getHEIGHT()); row.createCell(19).setCellValue(lists.get(i).getMAKTX_E()); } FileOutputStream out = new FileOutputStream("E://物料主資料"+j+".xlsx"); wb.write(out); out.close(); System.out.println("ok"+j); }