html页面

     
        //上传的文件列表            
      
       点击上传
                  
      
       只能上传xlsx/xls文件，且不超过2MB
      
        
     

js 

handleRemove(file, fileList) {            console.log(file, fileList);        },        handlePreview(file) {            console.log(file);        },        handleExceed(files, fileList) {            this.$message.warning(`当前限制选择 3 个文件，本次选择了 ${files.length} 个文件，共选择了 ${files.length + fileList.length} 个文件`);        },        beforeRemove(file, fileList) {            return this.$confirm(`确定移除 ${ file.name }？`);        },        handleAvatarSuccess(res, file) {
                this.$message(res.msg);        },        beforeAvatarUpload(file) {            // 文件类型进行判断            const isXlsx = file.type === "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";            const isXls = file.type === "application/vnd.ms-excel";            const isLt2M = file.size / 1024 / 1024 < 2;            if (!(isXlsx||isXls)) {                this.$message.error("上传头像图片只能是 xlsx/xls 格式!");            }            if (!isLt2M) {                this.$message.error("上传头像图片大小不能超过 2MB!");            }            return (isXlsx||isXls) && isLt2M;        },

 

controller

public Map
     
       importExcel(@RequestParam("file") MultipartFile multipartFile) {        LOGGER.info("批量导入，文件开始导入");        Map
      
        map = new HashMap<>();        List
       
         result = Lists.newArrayList();        TaxpayerImportExcel excel = new TaxpayerImportExcel(multipartFile);        try {            result = excel.analysisExcel();        } catch (Exception e) {            map.put("msg", "导入失败！");            LOGGER.error("批量导入失败，原因:{}", e.getMessage());        }        if (!result.isEmpty()) {
                taxpayerService.insertTaxpayerList(result);            map.put("msg", " 共计" + result.size() + "条，" + "导入成功！");            map.put("code", 0);        } else {            map.put("msg", " excel无数据，选择有数据的excel进行导入！");            map.put("code", 0);        }        return map;    }