spring实现模板文件下载

Posted 2021-01-15 当初的当初

前台

　　

<form id="batchModel0" method="post" action="/common/download-file" target="downLoadFile">
　　<table>
　　　　<tr>
　　　　　　<td>
　　　　　　　　<a href="#" id="downLoad">通过手机号码查询工号名称</a>
　　　　　　　　<input type="hidden" id="remoteFileName" name="remoteFile" value="通过手机号码查询工号名称.xlsx">
　　　　　　　　<button class="btnTip " href="#execlNoteSJHM" name="mouldDetail" arrow="false" id="execlMouldSJHM" type="button" />
　　　　　　</td>
　　　　</tr>
　　</table>
</form>

后台

@RequestMapping(value = "common/download-file")
    public void downloadFile(String remoteFile, HttpServletResponse response) {
        try {
            // excel模板路径, 此模板是直接放到项目的文件夹中即可
            File file =
                    ResourceUtils.getFile(ResourceUtils.CLASSPATH_URL_PREFIX + "resources/batch-excel/" + remoteFile);
            response.reset();
            response.setContentType("application/octet-stream"); // 设置response中的文件内容
            response.setHeader("Pragma", "No-cache");
            response.setHeader("Cache-Control", "no-cache");
            response.setDateHeader("Expires", 0);
            response.setHeader("Content-Disposition",
                               "inline; filename=" + new String((remoteFile).getBytes("gb2312"), "ISO8859-1"));
            OutputStream os = response.getOutputStream();
            InputStream is = new FileInputStream(file);
            try {
                byte[] bytes = new byte[1024];
                while (is.read(bytes) > 0) {
                    os.write(bytes);
                }
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                os.flush();
                is.close();
                os.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }