POI导出excel

最新推荐文章于 2024-12-03 14:20:06 发布

原创最新推荐文章于 2024-12-03 14:20:06 发布 · 326 阅读

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@RequestMapping("/export")
	public void export(HttpServletResponse response, HttpServletRequest request) {
		List<String> headerLine = new ArrayList<>();
		headerLine.add("id");
		headerLine.add("price");
		List<Object> objList = new ArrayList<>();
		objList.add("001");
		objList.add("1150");
		List<Object> objList1 = new ArrayList<>();
		objList1.add("002");
		objList1.add("698");
		List<List<Object>> content = new ArrayList<List<Object>>();
		content.add(objList);
		content.add(objList1);
		HSSFWorkbook wb = exportObjectList(headerLine, content);
		try {
			OutputStream out = response.getOutputStream();
			response.setCharacterEncoding("utf-8");
			response.setContentType("application/vnd.ms-excel");
			String name = "导出Excel";
			response.setHeader("Content-disposition", "attachment;filename="
					+ new String(name.getBytes("utf-8"), "ISO-8859-1") + ".xls");
			wb.write(out);
			out.flush();
			out.close();
		} catch (Exception e) {
			e.printStackTrace();
		} 

	}
	public HSSFWorkbook exportObjectList(List<String> headerLine, List<List<Object>> contentList) {
		HSSFWorkbook wb = new HSSFWorkbook();
		HSSFSheet sheet = wb.createSheet();
		HSSFRow biaoTiTohang = sheet.createRow(0);

		for (int i = 0; i < headerLine.size(); i++) {
			biaoTiTohang.createCell(i).setCellValue(headerLine.get(i));
		}

		for (int i = 0; i < contentList.size(); i++) {
			HSSFRow neiRongHang = sheet.createRow(i + 1);
			
			List<Object> localList = contentList.get(i);
			for (int j = 0; j < headerLine.size(); j++) {
				
				Object temp;
				if(j >= localList.size()) {
					temp = "";
				}else {
					temp = localList.get(j);
				}
				if (temp instanceof Integer) {
				    int value = ((Integer) temp).intValue();
				    neiRongHang.createCell(j).setCellValue(value);
				} else if (temp instanceof String) {
					String value = (String) temp;
					neiRongHang.createCell(j).setCellValue(value);
				} else if (temp instanceof Double) {
				    double value = ((Double) temp).doubleValue();
				    neiRongHang.createCell(j).setCellValue(value);
				} else if (temp instanceof Float) {
				    float value = ((Float) temp).floatValue();
				    neiRongHang.createCell(j).setCellValue(value);
				} else if (temp instanceof Long) {
				    long value = ((Long) temp).longValue();
				    neiRongHang.createCell(j).setCellValue(value);
				} else if (temp instanceof Boolean) {
				    boolean value = ((Boolean) temp).booleanValue();
				    neiRongHang.createCell(j).setCellValue(value);
				} else if (temp instanceof Date) {
				    Date value = (Date) temp;
				    neiRongHang.createCell(j).setCellValue(value);
				} else if (temp instanceof BigDecimal) {
					double value = ((BigDecimal) temp).doubleValue();
					neiRongHang.createCell(j).setCellValue(value);
				} else{
					if(null != temp){
						String value = temp.toString();
						neiRongHang.createCell(j).setCellValue(value);
					}
				}
			}
		}
		return wb;
	}