說明

1.前端上傳檔案必須用表單上傳

/**
     * 上傳圖片
     * 
     * @param params
     * @return
     */
    @RequestMapping(value = "/uploadImage", method = RequestMethod.POST)
    public @ResponseBody Map<String, Object> handleFileUpload(@RequestParam("file") CommonsMultipartFile file) {
        Map<String, Object> result = new
 
 HashMap<String, Object>();

        if (file == null) {
            result.put("code", 0);
            result.put("message", "檔案不能為空");
            result.put("data", new HashMap<>());
        }
        FileItem item = file.getFileItem();
        String fileName = "";
        String fileSuffix = ""
 
;
        if (!item.isFormField()) {
            String name = item.getName();
            if (StringUtils.isNotEmpty(name)) {
                fileSuffix = name.substring(name.lastIndexOf(".") + 1, name.length());//獲取檔案字尾名
                fileName = CodeGenerator.getUUID() + "." + fileSuffix;//檔案重新命名，防止重複檔案
 

            }
        }

        String bathPath = SysConfig.getPropertiesByKey("uploadPath");//硬碟上的路徑
        String currentPath = "/image/" + CommonUtil.getUserId();
        String path = bathPath + currentPath;

        File dest = new File(bathPath + currentPath);
        if (!dest.exists()) {//目錄不存在，建立目錄
            dest.mkdirs();
        }

        System.out.println(path + fileName);
        if (!file.isEmpty()) {
            try {
                byte[] bytes = file.getBytes();
                BufferedOutputStream stream = new BufferedOutputStream(new FileOutputStream(new File(dest, fileName)));
                stream.write(bytes);
                stream.close();
                result.put("code", 1);
                result.put("message", "success");
                result.put("data", currentPath + "/" + fileName);
            } catch (Exception e) {
                result.put("code", 0);
                result.put("message", e.toString());
                System.out.println(e.toString());
                result.put("data", new HashMap<>());
            }
        } else {
            result.put("code", 0);
            result.put("message", "檔案不能為空");
            System.out.println("檔案不能為空");
            result.put("data", new HashMap<>());
        }

        return result;
    }