spring mvc 导出下载Excel

最新推荐文章于 2025-07-01 16:51:05 发布

原创最新推荐文章于 2025-07-01 16:51:05 发布 · 1.7k 阅读

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#java #eclipse #excel #spring mvc #spring

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本文介绍了一个用于从系统中导出PCR实验数据并将其转换为Excel文件的过程。该过程涉及使用Java编程语言来创建一个Excel工作簿，填充数据，并通过HTTP响应提供给用户下载。

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Controller:
public void exportPcrList(HttpServletRequest request,HttpServletResponse response,Integer status,String date){
        // 声明一个工作薄  
        HSSFWorkbook workbook = new HSSFWorkbook(); 
        List<Map<String,Object>>  lists=new ArrayList<Map<String,Object>>();
        lists =service.exportNewPcrList(status,date);
        ExportExcel<Primer> ex = new ExportExcel<Primer>();
        String[] headers = {"样本名称","引物F","引物R","片段长度","退火温度","酶","测序引物","日期","溶解类型"};  
        String[] columNames = {"sampleName","fFrimer","rFrimer","length","temper","enzyme","frimer","handleTime","orderType"};   
        BufferedInputStream bis = null;
        BufferedOutputStream bos = null;
        try {
            workbook = ex.exportPcr(workbook,0,"新引物工单",headers,columNames,lists,"yyyy-MM-dd");
            ByteArrayOutputStream os = new ByteArrayOutputStream();
            workbook.write(os);
            byte[] content = os.toByteArray();
            InputStream is = new ByteArrayInputStream(content);
            // 设置response参数，可以打开下载页面
            Timestamp tmp = DateUtils.stringToTimestamp(date);
            String dateString = DateUtils.getDate2All(tmp);
            String fileName = dateNowStr+"导出的数据.xls";
           response.reset();
            response.setHeader("Content-disposition", dateString);  
            response.setContentType("application/vnd.ms-excel;charset=utf-8");
            //中文乱码下载解决方法
           fileName = new String(fileName.getBytes("utf-8"),"iso-8859-1");
       response.setHeader("Content-disposition", "attachment; filename=" + fileName);
            ServletOutputStream out = response.getOutputStream();
            bis = new BufferedInputStream(is);
            bos = new BufferedOutputStream(out);
            byte[] buff = new byte[2048];
            int bytesRead;
            while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
              bos.write(buff, 0, bytesRead);
            }
        } catch (final Exception e) {
            e.printStackTrace();
        }finally {
            try {
                if (bis != null){
                    bis.close();
                }
                if (bos != null){
                    bos.close();
                }  
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }