base64文件下载

柔情只为你懂 2022-05-29 10:54 196阅读 0赞

@RequestMapping(value = "download")  
public void download(String id,HttpServletRequest request,HttpServletResponse response)\{  
OutputStream os = null;//  
  InputStream is = null;  
  ZipOutputStream zos = null;  
  try \{  
  os = response.getOutputStream();  
  response.reset();    
  response.setContentType("application/octet-stream");   
  KhAttachment khAttachment = khAttachmentService.get(id);  
// CreditReport report = reportService.getId(id);  
  if(khAttachment!=null)\{  
  String fileName = khAttachment.getName();  
  String file=System.getProperty("java.io.tmpdir")+File.separator+khAttachment.getId()+File.separator+khAttachment.getName();  
  boolean iscreateFile=FileUtils.createFile(file);  
  if(iscreateFile)\{  
  String base64DataStr=StringUtils.substringAfter(khAttachment.getContent(), "base64,");  
  FileUtils.decoderBase64File(base64DataStr,file);  
  \}  
  is = new FileInputStream(file);    
// fileName = parseGBK(fileName);  
  if (request.getHeader("User-Agent").toUpperCase().indexOf("MSIE") >0)\{   
  fileName = URLEncoder.encode(fileName, "UTF-8");//IE浏览器  
  \}else\{  
  fileName = new String(fileName.getBytes("UTF-8"), "ISO8859-1");//firefox浏览器  
  \}  
  response.addHeader("Content-Disposition", "attachment; filename=\\""+ fileName+"\\"");    
// report.setDownloadCount(report.getDownloadCount()+1);  
// reportService.save(report);  
// response.getWriter().print("123123123");  
  IOUtils.copy(is, os);  
    
    
  \}  
  \} catch (Exception e) \{  
  e.printStackTrace();  
// ResponseUtils.renderText(response,"<script>top.$.jBox.error('附件下载错误!','系统提示');</script>");  
    
  \}finally\{  
  IOUtils.closeQuietly(is);  
  IOUtils.closeQuietly(os);  
  IOUtils.closeQuietly(zos);  
  \}

1，注意，