MultipartFile转为File工具类

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public static File multipartFileToFile(MultipartFile file) throws Exception {       File toFile = null;     if (file.equals("") || file.getSize() <= 0) {         file = null;     } else {         InputStream ins = null;         ins = file.getInputStream();         toFile = new File(file.getOriginalFilename());         inputStreamToFile(ins, toFile);         ins.close();     }     return toFile; }   //获取流文件 private static void inputStreamToFile(InputStream ins, File file) {     try {         OutputStream os = new FileOutputStream(file);         int bytesRead = 0;         byte[] buffer = new byte[8192];         while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {             os.write(buffer, 0, bytesRead);         }         os.close();         ins.close();     } catch (Exception e) {         e.printStackTrace();     } }