Java-POI,Excel相關
阿新 • • 發佈：2018-12-17
匯入excel讀取裡面內容儲存,建立excel模板
POIUtil類
/*獲取一行指定名的集合*/ /*讀取一行存為list,性別資料庫為int,所以判斷;index=3為年齡,excel裡是String型別, 資料庫為int型別,若未填寫,int存0*/ public static List<Object> getListByRow(Map<String, String> headDataMap, Row row, String[] attributes) { List<Object> datas = new ArrayList<Object>(); for (int i = 0; i < attributes.length; i++) { String index = headDataMap.get(attributes[i]); if(index == null){ System.out.println("查詢列："+attributes[i]+"沒有！"); } else{ Cell cell = row.getCell(Integer.parseInt(index)); Object cellValue = getCellValue(cell); if(index.equals("2")){ if(cellValue.equals("女")){ cellValue = 1 ; }else { cellValue = 0 ;} } if(index.equals("3")){ if(cellValue.equals("")){ cellValue = 0; } cellValue = Integer.parseInt(cellValue.toString()); } if (cellValue == null) { cellValue = ""; } datas.add(cellValue); } } return datas; } /** * 獲取一行的內容,Map儲存,儲存方式由引數定義,獲取表頭 * @param row 行物件 * isValueKey 是否以單元格內容作為Key?key為單元格內容, value為下標索引 * @return 一行的內容,Map儲存 */ public static Map<String, String> getRowDataToMap(Row row, boolean isValueKey) { Map<String, String> headDatas = new HashMap<String, String>(); short countCellNum = row.getLastCellNum(); if (isValueKey) { for (int j = 0; j < countCellNum; j++) { Cell cell = row.getCell(j); if (isExist(cell)) { // Key=單元格內容, Value=下標索引 headDatas.put(String.valueOf(getCellValue(cell)), String.valueOf(j)); } } } else { for (int j = 0; j < countCellNum; j++) { Cell cell = row.getCell(j); if (isExist(cell)) { // Key=下標索引, Value=單元格內容 headDatas.put( String.valueOf(j), String.valueOf(getCellValue(cell))); } } } return headDatas; } /*生成學生Excel表的模板*/ public boolean creatExcel(String path) throws IOException { String[] title={ "學號", "姓名", "性別", "年齡", "電話", "郵箱", "身份證"}; HSSFWorkbook wb = new HSSFWorkbook(); HSSFFont font = wb.createFont();//建立字型樣式 font.setFontName("宋體");//使用宋體 font.setFontHeightInPoints((short) 12);//字型大小 HSSFCellStyle style1 = wb.createCellStyle(); style1.setFont(font);//將字型注入 style1.setAlignment(HSSFCellStyle.ALIGN_CENTER);// 左右居中 HSSFSheet sheet = wb.createSheet("學生資訊表"); sheet.setColumnWidth(0, 30*170); sheet.setColumnWidth(1, 30*170); sheet.setColumnWidth(2, 30*128); sheet.setColumnWidth(3, 30*128); sheet.setColumnWidth(4, 30*160); sheet.setColumnWidth(5, 30*170); sheet.setColumnWidth(6, 30*250); HSSFRow row = sheet.createRow(0); HSSFCell cell = null; //插入第一行資料的表頭 for(int i=0;i<title.length;i++){ cell=row.createCell(i); cell.setCellValue(title[i]); cell.setCellType(Cell.CELL_TYPE_STRING); cell.setCellStyle(style1); } // 旁邊的說明資訊 sheet.addMergedRegion(new CellRangeAddress(0,(short)2,7,(short)12)); HSSFFont font1 = wb.createFont();//建立字型樣式 font1.setFontName("宋體");//使用宋體 font1.setFontHeightInPoints((short) 14);//字型大小 font1.setColor(HSSFColor.RED.index); HSSFCellStyle style2 = wb.createCellStyle(); style2.setFont(font1); style2.setWrapText(true);// 自動換行 cell = row.createCell(7); cell.setCellValue("性別填:男/女--年齡寫數字,不加歲,如21,23"); cell.setCellStyle(style2); //引數為(第一行，最後一行，第一列，最後一列) FileOutputStream os = new FileOutputStream(path+"學生資訊表.xls"); wb.write(os); os.close(); return true; } /*獲取單元格資料型別返回值*/ protected static Object getCellValue(Cell cell) { Object cellVauue = ""; int cellType = 3; if(cell!=null) { cellType = cell.getCellType(); } switch (cellType) { case Cell.CELL_TYPE_BOOLEAN: cellVauue = ""; break; case Cell.CELL_TYPE_FORMULA: cellVauue = cell.getStringCellValue(); break; case Cell.CELL_TYPE_NUMERIC: if(String.valueOf(cell.getNumericCellValue()).indexOf("E")==-1){ cellVauue = (int)cell.getNumericCellValue(); }else { cellVauue = new DecimalFormat("#").format(cell.getNumericCellValue()); } break; case Cell.CELL_TYPE_STRING: cellVauue = cell.getStringCellValue(); break; case Cell.CELL_TYPE_BLANK: cellVauue = ""; break; case Cell.CELL_TYPE_ERROR: cellVauue = ""; break; default: cellVauue = ""; } if(cellVauue == null){ cellVauue = ""; } return cellVauue; }
Resource類
@POST @Path("importExcel") @ApiOperation("學生Excel匯入") @Produces(MediaType.APPLICATION_JSON) public List<String> studentExcelImport(@FormDataParam("file") FormDataBodyPart file, @BeanParam Student student) throws IOException { String mediaType = file.getMediaType().toString(); //xlsx,xls if (!mediaType.equals("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet") && !mediaType.equals("application/vnd.ms-excel")) { Checkers.checkState(false, "檔案不是excel型別"); } File entity = file.getEntityAs(File.class); return studentService.studentExcelImport(entity,student); }
ServiceImpl實現類
@Override public List<String> studentExcelImport(File file , Student student) throws IOException { /*if (!xlsPath.endsWith(".xls") && !xlsPath.endsWith(".xlsx")) { Checkers.checkState(false, "檔案不是excel型別"); }*/ List<String> list = new ArrayList(); FileInputStream fileIn = new FileInputStream(file); Workbook wb = new HSSFWorkbook(fileIn); /* if(xlsPath.endsWith(".xls")){ wb = new HSSFWorkbook(fileIn);//03版 }else { wb = new XSSFWorkbook(fileIn);//07版不行 }*/ Sheet sht0 = wb.getSheetAt(0); //獲取Excel文件中的第一個表單 Map<String, String> headMap = poiUtil.getRowDataToMap(sht0.getRow(0),false);//獲取表頭 for (int i = 1; i <= sht0.getLastRowNum(); i++) { Row row = sht0.getRow(i); Student s = new Student(); s.setSchId(student.getSchId()); s.setFacId(student.getFacId()); s.setSpeId(student.getSpeId()); s.setClaId(student.getClaId()); for (int j=0;j<row.getLastCellNum();j++){ switch (headMap.get(String.valueOf(j))) { case "學號": if(poiUtil.getCellValue(row.getCell(j)).toString().equals("")){ break; } s.setAccount(poiUtil.getCellValue(row.getCell(j)).toString()); break; case "姓名": if(poiUtil.getCellValue(row.getCell(j)).toString().equals("")){ break; } s.setName(poiUtil.getCellValue(row.getCell(j)).toString()); break; case "性別": int sex; if (poiUtil.getCellValue(row.getCell(j)).equals("女")) { sex = 1; } else { sex = 0; } s.setSex(sex); break; case "年齡": String ss = poiUtil.getCellValue(row.getCell(j)).toString(); if (ss.equals("")) { s.setAge(0); } else { s.setAge(Integer.parseInt(ss)); } break; case "電話": if(poiUtil.getCellValue(row.getCell(j)).toString().equals("")){ break; } s.setPhone(poiUtil.getCellValue(row.getCell(j)).toString()); break; case "郵箱": if(poiUtil.getCellValue(row.getCell(j)).toString().equals("")){ break; } s.setEmail(poiUtil.getCellValue(row.getCell(j)).toString()); break; case "身份證": if(poiUtil.getCellValue(row.getCell(j)).toString().equals("")){ break; } s.setIdCard(poiUtil.getCellValue(row.getCell(j)).toString()); break; } } if(isStudentExist(s.getAccount())){ list.add("第"+i+"行:"+s.getAccount()+"學生學號重複"); continue;//庫中已有 }else if(s.getAccount()==null){ list.add("第"+i+"行:"+s.getName()+"學生沒有學號"); continue;//庫中已有 }else { importSave(s); } } fileIn.close(); return list; }
poi讀取電話號碼一類大數字時會變成帶E的數
