前端js：

var submit_data = new FormData();var name = $("#name").val();let file = $("#file")[0].file[0];submit_data.append("file", file);submit_data.append("name", name);$.ajax({	url: "http://localhost:8080/caochanglu/getSearch/getRule",	type: "POST",	data: submit_data,	async: false,	dataType: "json",	cache: false,	processData: false,	contentType: false,	success: function(data) {		console.log(data);	},	error: function(err) {		console.log(err);	}});

后台spring

@ResponseBody@RequestMapping(value = "getRule", methon = {RequestMethod.GET, RequestMethod.POST})public String getRule(HttpServletRequest request, @RequestParam("file") MultipartFile file){	String name = request.getParameter("name");}