input file multiple 配合springmvc实现多文件上传

1、前端页面的样子<input id="file" name="file" type="file" multiple="multiple" />2、前端的js代码var formData = new FormData(); var files = $("#file")[0].files;for(var i = 0 ; i < files.length ; i ++){formData.append('file',files[i]);}3、ajax的代码$.ajax({url: '${cpath}/biz/xxxx/addFile',type: 'POST',cache: false,data: formData,processData: false,contentType: false}).done(function(res) {debugger;}); 4、后端的代码@RequestMapping(value = "addFile", method = RequestMethod.POST, produces = "application/json; charset=UTF-8")@ResponseBodypublic String addFile(HttpServletRequest request,HttpServletResponse response) {String rRoles = request.getParameter("rRoles");List<MultipartFile> fileList = new ArrayList<>();//创建一个通用的多部分解析器 CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());//判断 request 是否有文件上传,即多部分请求 if(multipartResolver.isMultipart(request)){//转换成多部分request MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest)request; //取得request中的所有文件名 fileList = multiRequest.getFiles("file");if (fileList == null || fileList.size() <= 0) {throw new Exception("上传文件失败");}System.out.println("");}return null;}5、xml配置文件配置<bean id="multipartResolver" class="org.springframework.monsMultipartResolver"> <!-- set the max upload size100MB --> <property name="maxUploadSize"> <value>104857600</value> </property> <property name="maxInMemorySize"> <value>4096</value> </property> </bean>