Spring开机大文件上传下载支持

Question

我有一个 spring 启动 Web 应用程序，它将处理大文件（最大大小为 5g）上传，然后将其保存到 s3。请求和响应可能会持续很长时间。

那么像这样处理上传和下载的最佳做法是什么？下载或上传大文件时如何做好性能以防止我的服务器宕机？

Answer 1

你可以使用multipart/form-data

 @RequestMapping(value = "/agency/create", method = RequestMethod.POST, consumes = "multipart/form-data")
    public ResponseEntity<List<String>> createAgency(
            @RequestParam(value = "username", required = true) String username,
            @RequestParam(value = "pic1", required = true)MultipartFile pic1File,
            MultipartHttpServletRequest request, ModelAndView modelAndView) {
        List<String> requestKeys=new ArrayList<String>();
        List<String> originalFileName=new ArrayList<String>();

        request.getFileNames().forEachRemaining(requestKeys::add);
        for(String multipartFile:requestKeys) {
            originalFileName.add(request.getFile(multipartFile).getOriginalFilename());
        }
        storageService.store(pic1File);
        return new ResponseEntity<List<String>>(originalFileName, HttpStatus.CREATED);
    }

Answer 2

张贴以防将来有人觉得有用。这适用于 Spring Boot 2.4.2.

的 REST 控制器

Class 注释：

@RestController
@RequestMapping("/api")

方法声明：

@RequestMapping(path = "/file-upload/{depot}/{fileName}", method = {RequestMethod.POST, RequestMethod.PUT})
        public ResponseEntity<String> fileUpload(
                @PathVariable(name = "depot") String depot,
                @PathVariable(name = "fileName") String fileName,
                InputStream inputStream,
                HttpServletRequest request,
                HttpServletResponse response)

以上是 REST 控制器的 Spring 引导配置，适用于我的大型文件上传。关键是直接添加InputStream inputStream。

Spring开机大文件上传下载支持

Spring boot large file upload and download support

large-files

spring-boot