SpringBoot实现文件单文件上传和批量文件上传

html代码

<div>
　　<form role="form" method="post" enctype="multipart/form-data" th:action="@{/upload}">
　　　　<div>
       　　<label>File input</label>
　　　　　　<input type="file" id="exampleInputFile" name="file_upload">
　　　　</div>
　　　　<div>
　　　　　　<label>Batch File input</label>
　　　　　　<input type="file" id="batchInputFile" name="files_upload" multiple>
　　　　</div>
　　　　<button type="submit" class="btn btn-primary">Submit</button>
　　</form>
</div>

Controller代码

@PostMapping("/upload")
    public String fileUpload(@RequestParam String email, @RequestParam String password,
                             @RequestPart MultipartFile file_upload,@RequestPart MultipartFile[] files_upload) throws IOException {
        if (!file_upload.isEmpty()) {
            String originalFilename = file_upload.getOriginalFilename();
            // UUID随机生成新文件名
            String newFileName = UUID.randomUUID().toString().replaceAll("-", "")
                    + originalFilename.substring(originalFilename.lastIndexOf("."));
            file_upload.transferTo(new File("D:\\" + newFileName));
        }
        if (files_upload.length > 0) {
            for (MultipartFile file : files_upload) {
                if (!file.isEmpty()) {
                    String originalFilename = file.getOriginalFilename();
                    // UUID随机生成新文件名
                    String newFileName = UUID.randomUUID().toString().replaceAll("-", "")
                        + originalFilename.substring(originalFilename.lastIndexOf("."));
                    file.transferTo(new File("D:\\" + newFileName));
                }
            }
        }
        return "form/form_layouts";
    }