java实现excel导出实例

曾经终败给现在 2022-04-12 07:17 321阅读 0赞

声明下：list是前面操作查询的结果集。
    
    String path = request.getSession().getServletContext().getRealPath("/");
    		String name = "测试_" + Tools.getDateStr(new Date(), "YYYYMMddHHmmss") + ".xls";
    
    		XLSTransformer transformer = new XLSTransformer();
    		String sfrom = path + "/xlstemplet/" +(1 == salvationType?"名字1-":"名字2-")+ "测试.xls";// 模板文件
    		Workbook workbook;
    
    		int pageSize = (!Tools.isEmpty(request.getParameter("pageSize"))) ? Integer.parseInt(request.getParameter("pageSize"))
    				: 100;// 每个sheet的记录数量
    		try {
    			if ("mutiSheet".equals(request.getParameter("mutiSheet"))&& list.size() / pageSize > 1) {
    
    				List sheetObjects = new ArrayList(); // 每一个sheet对应的list
    				List sheetNames = new ArrayList(); // 每一个sheet名
    
    				if (list != null) {
    					for (int i = 0; i < list.size() / pageSize; i++) {
    						Map subMap = new HashMap();
    						subMap.put("pageSize", pageSize);
    						subMap.put("currentPage", (i+1));
    						int k = ((i + 1) * pageSize < list.size()) ? (i + 1) * pageSize : list.size();
    						List resultList = list.subList(i * pageSize, k);
    						subMap.put("resultList", resultList);
    						sheetObjects.add(subMap);
    						sheetNames.add("page" + (i + 1));
    					}
    				}
    				workbook = transformer.transformMultipleSheetsList(new FileInputStream(sfrom), sheetObjects, sheetNames, "map",
    						new HashMap(), 0);
    			} else {
    				Map beanMap = new HashMap();
    				map.put("pageSize", 0);
    				map.put("currentPage",0);
    				beanMap.put("map", map);
    				workbook = transformer.transformXLS(new FileInputStream(sfrom), beanMap);
    			}
    			response.reset();
    			response.setHeader("Content-disposition", "attachment;success=true;filename =" + URLEncoder.encode(name, "utf-8"));
    			OutputStream fos = null;
    			fos = response.getOutputStream();
    			workbook.write(fos);
    			fos.flush();
    			fos.close();
    		} catch (ParsePropertyException e) {
    			e.printStackTrace();
    		} catch (IOException e) {
    			e.printStackTrace();
    		}

另外需要引入3个jar包：这蛋疼的博客不能传附件。。。

3个jar文件的下载地址：[http://download.csdn.net/detail/sky\_xin/8444825][http_download.csdn.net_detail_sky_xin_8444825]

[http_download.csdn.net_detail_sky_xin_8444825]: http://download.csdn.net/detail/sky_xin/8444825