java - 如何设置客户端文件夹路径(如 D ://new folder) for download file in spring contoller?

Question

我有一个spring controller，我想下载特定路径的文件，比如D://或K://，但现在默认会下载到downloads文件夹。
我正在从 /WEB-INF/文件夹(服务器端位于 Tomcat 文件夹中)获取我的文件，我想在客户端机器 D:\驱动器中写入，请看我下面的代码有问题请让我知道。我正在使用谷歌浏览器。
提前致谢

 public void downloadFile(HttpServletRequest request,
                HttpServletResponse response) throws IOException {
            //ServletContext context = request.getServletContext();
            String filePath = request.getSession().getServletContext().getRealPath("/WEB-INF/") + "/"+"out.json";

             // get absolute path of the application
            ServletContext context = request.getServletContext();
            String appPath = context.getRealPath("");
            System.out.println("appPath = " + appPath);

            // construct the complete absolute path of the file
            //String fullPath = appPath + filePath;      
            File downloadFile = new File(filePath);
            FileInputStream inputStream = new FileInputStream(downloadFile);

            // get MIME type of the file
            String mimeType = context.getMimeType(filePath);
            if (mimeType == null) {
                // set to binary type if MIME mapping not found
                mimeType = "application/octet-stream";
            }
            System.out.println("MIME type: " + mimeType);

            // set content attributes for the response
            response.setContentType(mimeType);
            response.setContentLength((int) downloadFile.length());

            // set headers for the response
            String headerKey = "Content-Disposition";
            String headerValue = String.format("attachment; filename=\"%s\"",
                    downloadFile.getName());
            System.out.println("downloadFile.getName()" + downloadFile.getName());
            response.setHeader(headerKey, headerValue);

            // get output stream of the response
            OutputStream outStream = response.getOutputStream();

            byte[] buffer = new byte[BUFFER_SIZE];
            int bytesRead = -1;

            // write bytes read from the input stream into the output stream
            while ((bytesRead = inputStream.read(buffer)) != -1) {
                outStream.write(buffer, 0, bytesRead);
            }

            inputStream.close();
            outStream.close();
        }

Answer 1

您无法决定客户端将下载的文件保存在服务器端的什么位置 - 事实上，您甚至无法影响它是否将它保存在任何地方!这是由客户端(例如 Chrome)决定的。

参见 Chrome help了解如何更改 Chrome 中的默认下载位置。