SpringBoot+ruoyi框架文件上传和下载的实现

# 项目相关配置
ruoyi:
  # 名称
  name: RuoYi
  # 版本
  version: 3.6.0
  # 版权年份
  copyrightYear: 2021
  # 实例演示开关
  demoEnabled: true
  # 文件路径 示例（ Windows配置D:/ruoyi/uploadPath，Linux配置 /home/ruoyi/uploadPath）
 # profile: /home/admin2409/fn/uploadPath
  profile: D:/.code/uploadPath
  # 获取ip地址开关
  addressEnabled: false
  # 验证码类型 math 数组计算 char 字符验证
  captchaType: math

// 通用下载方法
export function download(fileName) {
	window.location.href = baseURL + "/common/download?fileName=" + encodeURI(fileName) + "&delete=" + true;
}

单独写一个下载啊文件的请求
@GetMapping("/downloadTemplate")
    public AjaxResult importTemplate() throws IOException {
        return AjaxResult.success("hnxTemplate.xlsx");
    }

/**
     * 通用下载请求
     *
     * @param fileName 文件名称
     * @param delete   是否删除
     */
    @GetMapping("common/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request) {
        try {
            if (!FileUtils.checkAllowDownload(fileName)) {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 " , fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = RuoYiConfig.getDownloadPath() + fileName; //注意这里的路径要和你下载的路径对应
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete) {
                FileUtils.deleteFile(filePath);
            }
        } catch (Exception e) {
            log.error("下载文件失败" , e);
        }
    }

 /**
     * 获取下载路径
     */
    public static String getDownloadPath() {
        return getProfile() + "/download/";
    }

<el-form-item label="场景图片:" prop="sceneImgurl">
          <el-upload
            action=""
            ref="uploadImport"
            :http-request="httpRequest"
            list-type="picture-card"
            :limit="1"
            :file-list="fileList"
            accept=".jpg, .jpeg, .png, .gif"
            :auto-upload="false"
            :before-remove="removeImg"
            >
            <i class="el-icon-plus"></i>
          </el-upload>
        </el-form-item>

 httpRequest(param) {
      let params = new FormData();
      params.append('avatarfile', param.file); // 传文件
      uploadPlanImg(params).then(res => {
          if(res.code!==200) return
          this.form.sceneImgurl = res.imgUrl
        });	
    },

 httpRequest(param) {
      let params = new FormData();
      params.append('avatarfile', param.file); // 传文件
      uploadPlanImg(params).then(res => {
          if(res.code!==200) return
          this.form.sceneImgurl = res.imgUrl
        });	
    },

    /**
     * 获取上传路径
     */
    public static String getUploadPath() {
        return getProfile() + "/upload";
    }