如何让下载完成后跳转到成功页面。 我的代码如下，下载后，不跳转到成功页面
        /*读取文件*/
        File file = new File(fullFilePath);
        /*如果文件存在*/
        if (file.exists() && bAllowed) {
            String filename = URLEncoder.encode(file.getName(), enc);
            response.reset();
            response.setContentType(contentType);
            response.addHeader("Content-Disposition", "attachment; filename=\"" + filename + "\"");
            int fileLength = (int) file.length();
            response.setContentLength(fileLength);
            /*如果文件长度大于0*/
            if (fileLength != 0) {
                /*创建输入流*/
                InputStream inStream = new FileInputStream(file);
                byte[] buf = new byte[4096];
                /*创建输出流*/
                ServletOutputStream servletOS = response.getOutputStream();
                int readLength;
                while (((readLength = inStream.read(buf)) != -1)) {
                    servletOS.write(buf, 0, readLength);
                }
                inStream.close();
                servletOS.flush();
                servletOS.close();
            }
        }

        response.sendRedirect("/success.jsp");
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FROM 24.159.200.*