Spring使用表單上傳檔案

注意請求參數： request Content-type:"multipart/form-data"

@RequestMapping(value = "upload", method = RequestMethod.POST, consumes = MediaType.MULTIPART_FORM_DATA_VALUE, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
    public void upload(HttpServletRequest request) throws Exception {
        BaseResponseV2 responseV2 = new BaseResponseV2();
        if( request instanceof MultipartHttpServletRequest == fa) {
                    return ;
        }
        
        MultipartHttpServletRequest multipartHttpServletRequest = (MultipartHttpServletRequest)request;
        
        MultipartFile multipartFile = multipartHttpServletRequest.getFile("doc-form-file");
        System.out.println("formname:"+multipartFile.getName());
        System.out.println("filename:"+multipartFile.getOriginalFilename());
        multipartFile.transferTo(new File(System.getProperty("java.io.tmpdir")+File.separator+"text.xlsx"));
        
        Map<String, String[]> paramMap = request.getParameterMap();
        for(String key:paramMap.keySet()) {
            for(String value:paramMap.get(key)) {
                System.out.println(key+":"+value);
            }
        }