左邊是 easypoi 導出的默認格式，右邊是自定義格式
上述的轉換其實都是在 "導出前一步" 進行完成的，所以開發基本流程為 先做好導出，在增加樣式。
主要代碼為：
//-------------------------------設置單元格樣式開始------------------------------------- //獲取sheetAt對象，這里一個sheetAt所以角標是0 Sheet sheetAt = workbook.getSheetAt(0); // 表格行數 int lastRowNum = sheetAt.getLastRowNum(); // 獲取列數 int physicalNumberOfCells = sheetAt.getRow(0).getPhysicalNumberOfCells(); //開始遍歷單元格並進行判斷是否渲染 for (int i = 2 ; i <= lastRowNum ; i++) { //獲取每行對象 Row row = sheetAt.getRow(i); for (int j = 1; j < physicalNumberOfCells; j++) { //獲取單元格對象 Cell cell = row.getCell(j) ;
//獲取單元格樣式對象 CellStyle cellStyle = workbook.createCellStyle();
//獲取單元格內容對象 Font font = workbook.createFont(); //一定要裝入 樣式中才會生效 cellStyle.setFont(font);
//獲取當前單元格 中的value int score = Integer.valueOf(map.get(String.valueOf(i - 2)).get(j)); if (score > 90 && score < 95){ //設置單元格背景顏色 cellStyle.setFillForegroundColor(IndexedColors.RED.getIndex()); cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND); //設置單元格字體顏色 font.setColor(IndexedColors.YELLOW.getIndex()); } cell.setCellStyle(cellStyle); }
} //-------------------------------設置單元格樣式完成-------------------------------------- |
實例
/** * 場景，假設現在要導出 學生成績表的Excel文件 * 現在需要對其中 分數大於 90分 同時 小於95分 的同學 標記為 紅色。 */ @GetMapping(value = "/api/jncsCarFlow/ExportStudentScore") @ApiOperation(value = "導出檢測器監測記錄", notes = "導出檢測器監測記錄") public void exportStudentScore(HttpServletResponse response) { try { Map<String, List<String>> map = getData(); //表頭 List<ExcelExportEntity> headList = new ArrayList<>(); ExcelExportEntity excelExportEntity; for (int i = 0; i < map.get("headList").size(); i++) { excelExportEntity = new ExcelExportEntity(map.get("headList").get(i), map.get("keyHeadList").get(i)); headList.add(excelExportEntity); } //數據 List<Map<String, Object>> list = new ArrayList<>(); Map<String, Object> mapData; for (int i = 0; i < 9; i++) { mapData = new HashMap<>(); List<String> data = map.get(i + ""); mapData.put("name", data.get(0)); mapData.put("languageScore", Integer.valueOf(data.get(1))); mapData.put("mathScore", Integer.valueOf(data.get(2))); mapData.put("englishScore", Integer.valueOf(data.get(3))); list.add(mapData); }
//導出 String excelName = "StudentScoreName" + System.currentTimeMillis() + ".xls"; if (CollectionUtils.isNotEmpty(list)) { response.setCharacterEncoding("UTF-8"); response.setHeader("content-Type", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"); response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(excelName, "UTF-8")); ExportParams params = new ExportParams("Excel的title", "sheet的Name"); Workbook workbook = ExcelExportUtil.exportExcel(params, headList, list); //-------------------------------設置單元格樣式開始------------------------------------- //獲取sheetAt對象，這里一個sheetAt所以角標是0 Sheet sheetAt = workbook.getSheetAt(0); // 表格行數 int lastRowNum = sheetAt.getLastRowNum(); // 獲取列數 int physicalNumberOfCells = sheetAt.getRow(0).getPhysicalNumberOfCells(); //開始遍歷單元格並進行判斷是否渲染 for (int i = 2; i <= lastRowNum; i++) { //獲取每行對象 Row row = sheetAt.getRow(i); for (int j = 1; j < physicalNumberOfCells; j++) { //獲取單元格對象 Cell cell = row.getCell(j);
//獲取單元格樣式對象 CellStyle cellStyle = workbook.createCellStyle();
//獲取單元格內容對象 Font font = workbook.createFont(); //一定要裝入 樣式中才會生效 cellStyle.setFont(font);
//獲取當前單元格 中的value int score = Integer.valueOf(map.get(String.valueOf(i - 2)).get(j)); if (score > 90 && score < 95) { //設置單元格背景顏色 cellStyle.setFillForegroundColor(IndexedColors.RED.getIndex()); cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND); //設置單元格字體顏色 font.setColor(IndexedColors.YELLOW.getIndex()); } cell.setCellStyle(cellStyle); }
} //-------------------------------設置單元格樣式完成------------------------------------- workbook.write(response.getOutputStream()); } } catch (Exception e) { e.printStackTrace(); } }
/* * 生成數據 * */ public Map<String, List<String>> getData() { Map<String, List<String>> map = new HashMap<>();
List<String> headList = Arrays.asList("姓名", "語文", "數學", "英語"); map.put("headList", headList); List<String> keyHeadList = Arrays.asList("name", "languageScore", "mathScore", "englishScore"); map.put("keyHeadList", keyHeadList);
Integer languageScore = 88; Integer mathScore = 87; Integer englishScore = 86;
for (int i = 0; i < 9; i++) { languageScore += i; mathScore += i; englishScore += i; List<String> data = Arrays.asList("小明" + i, languageScore + "", mathScore + "", englishScore + ""); map.put(i + "", data); } return map; } |