菜鸟求救：如何从Centera下载文件

Question

把别人的代码copy过来用，大家帮看看，下面的可以用吗？直接传入一组clipID，可以保存在本地吗？public void retrieveContent(String clipID, HttpServletResponse response)
  throws Exception
  {  int exitCode = 0;
  FPPool thePool = null;
  try
  {  FPPool.setGlobalOption(FPLibraryConstants.FP_OPTION_OPENSTRATEGY,
  FPLibraryConstants.FP_LAZY_OPEN);  FPPool.setGlobalOption(FPLibraryConstants.FP_OPTION_OPENSTRATEGY,
  FPLibraryConstants.FP_LAZY_OPEN);  thePool = new FPPool(poolAddress);  FPClip theClip = new FPClip(thePool, clipID,
  FPLibraryConstants.FP_OPEN_FLAT);  FPTag topTag = theClip.getTopTag();
    
  String origFilename = topTag.getStringAttribute("filename");  response.setContentType("application/x-msdownload");
  response.setHeader("Content-disposition", "attachment; filename="
  + new String(origFilename.getBytes("gb2312"), "iso8859-1"));  topTag.BlobRead(response.getOutputStream());  topTag.Close();
  theClip.Close();  }
  catch (FPLibraryException e)
  {
  exitCode = e.getErrorCode();
  System.err.println("Centera SDK Error: " + e.getMessage() + "("
  + exitCode + ")");
  }
  catch (IllegalArgumentException e)
  {
  System.out.println(e.getMessage());
  e.printStackTrace();
  exitCode = -1;
  }
  catch (IOException e)
  {
  System.err.println("IO Error occured: " + e.getMessage());
  e.printStackTrace();
  exitCode = -1;
  }
  finally
  {
  thePool.Close();
  }
  }