关于在servlet中向客户端写回flash的问题

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File outFile = new File(outputFilePath);
        if (outFile.exists()) {
          //向客户端写回文件
          if (outputExtension.equalsIgnoreCase("pdf")) {
            response.setContentType("application/pdf");
          } else if (outputExtension.equalsIgnoreCase("swf")) {
            response.setHeader("Content-Length", ""
                + outFile.length());
            response.setContentType("application/x-shockwave-flash");
          }
//          response.setHeader("Content-Disposition", "inline; filename="
//              + outputFileName);
          FileInputStream is = new FileInputStream(outputFilePath);
          PrintWriter pw = response.getWriter();
          int k;
          while ((k = is.read()) != -1) {
            pw.write(k);
          }
          pw.flush();
          pw.close();
          is.close();
          is = null;