java后台poi根据模板导出excel
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public class ExcelUtils { private static final String INSPECTIONRECORD_SURFACE_TEMPLET_PATH = "download\\\\template\\\\materialList.xlsx"; private static XSSFCellStyle cellstyle = null; public static void exportBom(HttpServletRequest request, HttpServletResponse response, Map map) throws IOException { //模板的路径,这个在自己的项目中很容易弄错,相对位置一定要写对啊 String psth = request.getRealPath("/") + INSPECTIONRECORD_SURFACE_TEMPLET_PATH; Workbook webBook = readExcel(psth); Sheet sheet = webBook.getSheetAt(0); //调用样式方法 cellstyle = createCellStyle(webBook); sheet.setColumnWidth(0, 3766);//列宽 sheet.setColumnWidth(1, 4766);//列宽 //开始操作模板,找到某行某列(某个cell),需要注意的是这里有个坑,行和列的计数都是从0开始的 //一次数据插入的位置不对,别灰心,多试几次就好啦,你要是能看懂我下面的代码,数据插在了什么位置,你就明白了 //打印时间 int rows = 0; Row row = sheet.getRow(rows); //调用方法,赋值并给定样式(写样式的时候这个工具类只能用XSSF而不能用HSSF,不然样式会没响应) setCellStyleWithValue(row.createCell(0),(String) map.get("title")); rows = 2; row = sheet.getRow(rows); row.createCell(1).setCellValue((String) map.get("date")); // setCellStyleWithValue(row.createCell(1),(String) map.get("date")); //负责人 rows = 3; row = sheet.getRow(rows); row.createCell(1).setCellValue((String) map.get("leader")); // setCellStyleWithValue(row.createCell(1),(String) map.get("leader")); //审核人 rows = 4; row = sheet.getRow(rows); row.createCell(1).setCellValue((String) map.get("Auditleader")); // setCellStyleWithValue(row.createCell(1),(String) map.get("Auditleader")); //在调用模板的时候,数据的插入不能直接应用模板行,不然数据会覆盖掉哪行 rows = 7; row = sheet.createRow(rows); row.createCell(0).setCellValue("编号"); row.createCell(1).setCellValue("名称"); row.createCell(2).setCellValue("规格"); row.createCell(3).setCellValue("数量"); row.createCell(4).setCellValue("益值"); row.setRowStyle(cellstyle); List<Map<String, Object>> list = (List<Map<String, Object>>) map.get("resultList"); for (int i = 0; i < list.size(); i++) { row = sheet.createRow(rows++); /* row.createCell(0).setCellValue(StringUtils.objToStr(list.get(i).get("物料编号"))); row.createCell(1).setCellValue(StringUtils.objToStr(list.get(i).get("物料名称"))); row.createCell(2).setCellValue(StringUtils.objToStr(list.get(i).get("物料规格"))); row.createCell(3).setCellValue(Double.parseDouble(StringUtils.objToStr(list.get(i).get("物料消耗数量")))); row.createCell(4).setCellValue(Float.parseFloat(StringUtils.objToStr(list.get(i).get("物料消耗损益值"))));*/ setCellStyleWithValue(row.createCell(0),StringUtils.objToStr(list.get(i).get("物料编号"))); setCellStyleWithValue(row.createCell(1),StringUtils.objToStr(list.get(i).get("物料名称"))); setCellStyleWithValue(row.createCell(2),StringUtils.objToStr(list.get(i).get("物料规格"))); setCellStyleWithValue(row.createCell(3),Double.parseDouble(StringUtils.objToStr(list.get(i).get("物料消耗数量")))); setCellStyleWithValue(row.createCell(4),Float.parseFloat(StringUtils.objToStr(list.get(i).get("物料消耗损益值")))); } writeExcel(response, webBook, (String) map.get("title")); } private static XSSFWorkbook readExcel(String filePath) { InputStream in = null; XSSFWorkbook work = null; try { in = new FileInputStream(filePath); work = new XSSFWorkbook(in); } catch (FileNotFoundException e) { System.out.println("文件路径错误"); e.printStackTrace(); } catch (IOException e) { System.out.println("文件输入流错误"); e.printStackTrace(); } return work; } private static void writeExcel(HttpServletResponse response, Workbook work, String fileName) throws IOException { OutputStream out = null; try { out = response.getOutputStream(); response.setContentType("application/ms-excel;charset=UTF-8"); response.setHeader("Content-Disposition", "attachment;filename=" .concat(String.valueOf(URLEncoder.encode(fileName + ".xls", "UTF-8")))); work.write(out); } catch (IOException e) { System.out.println("输出流错误"); e.printStackTrace(); } finally { out.close(); } } private static Cell setCellStyleWithStyleAndValue(CellStyle style, Cell cell, String value) { cell.setCellStyle(style); cell.setCellValue(value); return cell; } private static Cell setCellStyleWithStyleAndValue(CellStyle style, Cell cell, Double value) { cell.setCellStyle(style); cell.setCellValue(value); return cell; } private static Cell setCellStyleWithValue(Cell cell, String value) { cell.setCellStyle(cellstyle); cell.setCellValue(value); return cell; } private static Cell setCellStyleWithStyleAndValue(CellStyle style, Cell cell, RichTextString value) { cell.setCellStyle(style); cell.setCellValue(value); return cell; } private static Cell setCellStyleWithValue(Cell cell, int value) { cell.setCellStyle(cellstyle); cell.setCellValue(value); return cell; } private static Cell setCellStyleWithValue(Cell cell, double value) { cell.setCellStyle(cellstyle); cell.setCellValue(value); return cell; } private static XSSFCellStyle createCellStyle(Workbook wb) { cellstyle = (XSSFCellStyle) wb.createCellStyle(); cellstyle.setAlignment(XSSFCellStyle.ALIGN_CENTER); // cellstyle.setBorderBottom(XSSFCellStyle.BORDER_THIN); // cellstyle.setBorderLeft(XSSFCellStyle.BORDER_THIN); // cellstyle.setBorderRight(XSSFCellStyle.BORDER_THIN); // cellstyle.setBorderTop(XSSFCellStyle.BORDER_THIN); cellstyle.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER); return cellstyle; } }
我自己的空模板,有数据的图就不贴出来了!
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