<dependency>
          <groupId>commons-io</groupId>
          <artifactId>commons-io</artifactId>
          <version>2.4</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
        <dependency>
          <groupId>commons-fileupload</groupId>
          <artifactId>commons-fileupload</artifactId>
          <version>1.3.1</version>
        </dependency>

<form action="/file/fileUpload" method="post" enctype="multipart/form-data">
            <input type="file" name="file"/>
            作者： <input type="text" name="author"/>
            <input type="submit" value="提交"/>
        </form>

@RequestMapping("/fileUpload")
        /**
         * MultipartFile 选择的文件
         */
        public String fileupload(HttpSession session,MultipartFile file,String author) throws IOException {
            System.out.println("作者："+author);
            System.out.println(file);
            /**
             * 如何处理文件
             */
            if(!file.isEmpty()){
                //获取文件名称
                String fileName=file..getOriginalFilename();
                //获取到需要上传的路径
                String realPath = session.getServletContext().getRealPath("/WEB-INF/upload");
                //创建文件对象
                File uploadfile=new File(realPath+"\\"+fileName);
                //如何上传文件
                file.transferTo(uploadfile);
            }
            return "index";
        }

<!--文件上传解析器-->
        <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
            <!--编码-->
            <property name="defaultEncoding" value="UTF-8"/>
            <property name="maxUploadSize" value="500000"/>
        </bean>

<form action="/file/fileUploads" method="post" enctype="multipart/form-data">
        <input type="file" name="uploadFiles"/>
        <input type="file" name="uploadFiles"/>
        <input type="file" name="uploadFiles"/>
        作者： <input type="text" name="author"/>
        <input type="submit" value="提交"/>
    </form>

@RequestMapping("/fileUploads")
    /**
     * MultipartFile 选择的文件
     */
    public String fileUploads(HttpSession session,MultipartFile[] uploadFiles,String author) throws IOException {
        System.out.println("作者："+author);
        System.out.println(uploadFiles);
        /**
         * 如何处理文件
         */
        for (MultipartFile file:uploadFiles){
            if(!file.isEmpty()){
                //获取文件名称
                String fileName=file.getOriginalFilename();
                //获取到需要上传的路径
                String realPath = session.getServletContext().getRealPath("/WEB-INF/upload");
                //创建文件对象
                File uploadfile=new File(realPath+"\\"+fileName);
                //如何上传文件
                file.transferTo(uploadfile);
            }
        }
        return "index";
    }