Java SpringMVC專案匯出excel多種類對應工具類整理（util）
阿新 • • 發佈：2019-01-02
上一章介紹如何匯入excel進系統處理成MAP集合（詳情請看上提供的連結），這次我又整理了一下如何快速匯出excel的工具。
1.匯出無表頭excel
檔案單個工作表(sheet)，【fileName是標題名，titleList是列名，list就是列的內容了】
/** * 匯出無表頭excel 檔案單個工作表(sheet) * * @param fileName * @param titleList * @param list * @param response */ public static void exportNoHeadExcel(String fileName, String[] titleList, List list, HttpServletResponse response) { SimpleDateFormat df = new java.text.SimpleDateFormat("yyyyMMdd"); String todayStr = df.format(new Date()); OutputStream os = null; try { os = response.getOutputStream(); String localFileName = fileName; fileName = java.net.URLEncoder.encode(fileName, "UTF-8");// 處理中文檔名的問題 fileName = new String(fileName.getBytes("UTF-8"), "GBK");// 處理中文檔名的問題 response.setContentType("application/vnd.ms-excel;"); response.setHeader("Content-disposition", "attachment; filename=\"" + fileName + "_" + todayStr + ".xls\""); // 開始寫入excel // 欄位字型 jxl.write.WritableFont wfc1 = new jxl.write.WritableFont( WritableFont.COURIER, 10, WritableFont.NO_BOLD, true); jxl.write.WritableCellFormat wcfFC1 = new jxl.write.WritableCellFormat( wfc1); wcfFC1.setAlignment(jxl.format.Alignment.CENTRE); wcfFC1.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE); // 結果字型 jxl.write.WritableCellFormat wcfFC2 = new jxl.write.WritableCellFormat(); wcfFC2.setAlignment(jxl.format.Alignment.CENTRE); wcfFC2.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE); WritableWorkbook wbook = Workbook.createWorkbook(os); // 寫sheet名稱 WritableSheet wsheet = wbook.createSheet(localFileName, 0); for (int m = 0; m < titleList.length; m++) { wsheet.setColumnView(m, 30); } // 加入欄位名 for (int n = 0; n < titleList.length; n++) { wsheet.addCell(new jxl.write.Label(n, 0, titleList[n], wcfFC1)); } // 寫入流中 int row = 0; for (int r = 0; r < list.size(); r++) { Object[] obj = (Object[]) list.get(r); for (int x = 0; x < titleList.length; x++) { wsheet.addCell(new jxl.write.Label(x, row + 1, obj[x] == null ? " " : obj[x].toString(), wcfFC1)); } row++; if (row % 60000 == 0) { row = 0; // 寫sheet名稱 wsheet = wbook.createSheet(localFileName, 0); for (int m = 0; m < titleList.length; m++) { wsheet.setColumnView(m, 30); } // 加入欄位名 for (int n = 0; n < titleList.length; n++) { wsheet.addCell(new jxl.write.Label(n, 0, titleList[n], wcfFC1)); } } } wbook.write(); wbook.close(); os.flush(); } catch (Exception e) { e.printStackTrace(); } finally { if (os == null) { Log.info("os is null"); } else { try { os.close(); os = null; } catch (IOException e) { e.printStackTrace(); } } } }
2.首先匯出無表頭excel 檔案帶多個工作表(sheet)，【sheetList存放的就是Map包含fileName是標題名，titleList是列名，list就是列的內容】
/** * 匯出無表頭excel檔案 * * @param fileName * @param titleList * @param list * @param response */ public static void exportNoHeadExcel(List<Map<String,Object>> sheetList, HttpServletResponse response) { SimpleDateFormat df = new java.text.SimpleDateFormat("yyyyMMdd"); String todayStr = df.format(new Date()); OutputStream os = null; try { os = response.getOutputStream(); WritableWorkbook wbook = Workbook.createWorkbook(os); for(int i=0;i<sheetList.size();i++){ Map<String,Object> map=sheetList.get(i); String fileName=(String) map.get("fileName"); String[] titleList=(String[]) map.get("titleList"); List list=(List) map.get("list"); String localFileName = fileName; fileName = java.net.URLEncoder.encode(fileName, "UTF-8");// 處理中文檔名的問題 fileName = new String(fileName.getBytes("UTF-8"), "GBK");// 處理中文檔名的問題 response.setContentType("application/vnd.ms-excel;"); response.setHeader("Content-disposition", "attachment; filename=\"" + fileName + "_" + todayStr + ".xls\""); // 開始寫入excel // 欄位字型 jxl.write.WritableFont wfc1 = new jxl.write.WritableFont( WritableFont.COURIER, 10, WritableFont.NO_BOLD, true); jxl.write.WritableCellFormat wcfFC1 = new jxl.write.WritableCellFormat( wfc1); wcfFC1.setAlignment(jxl.format.Alignment.CENTRE); wcfFC1.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE); // 結果字型 jxl.write.WritableCellFormat wcfFC2 = new jxl.write.WritableCellFormat(); wcfFC2.setAlignment(jxl.format.Alignment.CENTRE); wcfFC2.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE); // 寫sheet名稱 WritableSheet wsheet = wbook.createSheet(localFileName,i); for (int m = 0; m < titleList.length; m++) { wsheet.setColumnView(m, 30); } // 加入欄位名 for (int n = 0; n < titleList.length; n++) { wsheet.addCell(new jxl.write.Label(n, 0, titleList[n], wcfFC1)); } // 寫入流中 int row = 0; for (int r = 0; r < list.size(); r++) { Object[] obj = (Object[]) list.get(r); for (int x = 0; x < titleList.length; x++) { wsheet.addCell(new jxl.write.Label(x, row + 1, obj[x] == null ? " " : obj[x].toString(), wcfFC1)); } row++; if (row % 60000 == 0) { row = 0; // 寫sheet名稱 wsheet = wbook.createSheet(localFileName, 0); for (int m = 0; m < titleList.length; m++) { wsheet.setColumnView(m, 30); } // 加入欄位名 for (int n = 0; n < titleList.length; n++) { wsheet.addCell(new jxl.write.Label(n, 0, titleList[n], wcfFC1)); } } } } wbook.write(); wbook.close(); os.flush(); } catch (Exception e) { e.printStackTrace(); } finally { if (os == null) { Log.info("os is null"); } else { try { os.close(); os = null; } catch (IOException e) { e.printStackTrace(); } } } }
3.匯出excel檔案帶標題【fileName是標題名，titleList是列名，list就是列的內容了】
/** * 匯出excel 檔案 帶標題 * * @param fileName * @param titleList * @param list * @param response */ public static void exportWithHeadExcel(String fileName, String[] titleList, List list, HttpServletResponse response) { Date now = new Date(); SimpleDateFormat dateformat = new java.text.SimpleDateFormat( "yyyy年MM月dd日HH時mm分"); SimpleDateFormat df = new java.text.SimpleDateFormat("yyyyMMdd"); String todayStr = df.format(new Date()); String today = dateformat.format(now); OutputStream os = null; try { os = response.getOutputStream(); String localFileName = fileName; fileName = java.net.URLEncoder.encode(fileName, "UTF-8");// 處理中文檔名的問題 fileName = new String(fileName.getBytes("UTF-8"), "GBK");// 處理中文檔名的問題 response.setContentType("application/vnd.ms-excel;"); response.setHeader("Content-disposition", "attachment; filename=\"" + fileName + "_" + todayStr + ".xls\""); // 開始寫入excel // 加標題 // 標題字型 jxl.write.WritableFont wfc = new jxl.write.WritableFont( WritableFont.COURIER, 18, WritableFont.NO_BOLD, false); jxl.write.WritableCellFormat wcfFC = new jxl.write.WritableCellFormat( wfc); wcfFC.setAlignment(jxl.format.Alignment.CENTRE); wcfFC.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE); // 欄位字型 jxl.write.WritableFont wfc1 = new jxl.write.WritableFont( WritableFont.COURIER, 10, WritableFont.NO_BOLD, false); jxl.write.WritableCellFormat wcfFC1 = new jxl.write.WritableCellFormat( wfc1); wcfFC1.setAlignment(jxl.format.Alignment.CENTRE); wcfFC1.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE); // 結果字型 jxl.write.WritableCellFormat wcfFC2 = new jxl.write.WritableCellFormat(); wcfFC2.setAlignment(jxl.format.Alignment.CENTRE); wcfFC2.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE); WritableWorkbook wbook = Workbook.createWorkbook(os); // 寫sheet名稱 WritableSheet wsheet = wbook.createSheet(localFileName, 0); int i = 3; for (int m = 0; m < titleList.length; m++) { wsheet.setColumnView(m, 30); } // 加入欄位名 for (int n = 0; n < titleList.length; n++) { wsheet.addCell(new jxl.write.Label(n, 3, titleList[n], wcfFC1)); } // 加入標題 wsheet.mergeCells(0, 0, i - 1, 0); wsheet.addCell(new Label(0, 0, localFileName, wcfFC)); // 加入列印時間 wsheet.addCell(new Label(i - 2, 1, "列印日期:")); wsheet.addCell(new Label(i - 1, 1, today)); // 寫入流中 int row = 0; for (int r = 0; r < list.size(); r++) { Object[] obj = (Object[]) list.get(r); for (int x = 0; x < titleList.length; x++) { wsheet.addCell(new jxl.write.Label(x, row + 4, obj[x] == null ? " " : obj[x].toString(), wcfFC1)); } row++; if (row % 60000 == 0) { row = 0; // 寫sheet名稱 wsheet = wbook.createSheet(localFileName, 0); i = 3; for (int m = 0; m < titleList.length; m++) { wsheet.setColumnView(m, 30); } // 加入欄位名 for (int n = 0; n < titleList.length; n++) { wsheet.addCell(new jxl.write.Label(n, 3, titleList[n], wcfFC1)); } // 加入標題 wsheet.mergeCells(0, 0, i - 1, 0); wsheet.addCell(new Label(0, 0, localFileName, wcfFC)); // 加入列印時間 wsheet.addCell(new Label(i - 2, 1, "列印日期:")); wsheet.addCell(new Label(i - 1, 1, today)); } } wbook.write(); wbook.close(); os.flush(); } catch (Exception e) { e.printStackTrace(); } finally { if (os == null) { Log.info("os is null"); } else { try { os.close(); os = null; } catch (IOException e) { e.printStackTrace(); } } } }
目前大概整理了這3個，以後用到還會整理更新，今天就先到在這裡吧..待續...