通过blob请求后端导出文件

后端controller

 @PostMapping("/exportPlanProject2")public void exportActive(@RequestBody IfPlanListDTO plan, HttpServletResponse httpServletResponse) throws IOException {}

后端service

    public void exportExcel2(HttpServletResponse response) throws IOException {OutputStream out = response.getOutputStream();try {response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");response.setCharacterEncoding(Charsets.UTF_8.name());String fileName = "首页导出";fileName = URLEncoder.encode(fileName, "UTF-8").replaceAll("\\+", "%20");response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".xlsx");wb.write(out);} catch (Exception e) {log.error("导出Excel异常{}", e.getMessage());throw new CustomException("导出Excel失败，请联系网站管理员！");} finally {if (wb != null) {try {wb.close();} catch (IOException e1) {e1.printStackTrace();}}if (out != null) {try {out.close();} catch (IOException e1) {e1.printStackTrace();}}}}

前端

     request({method: 'post',url: '/investment/plan/remake/exportPlanProject2',data: this.queryParams,responseType: 'blob'}).then(res => {console.log('res---',res)const aLink = document.createElement('a')var fileName = '文件名称' + moment().format('YYYYMMDDHHmmss') + '.xlsx'fileName = fileName.replace(/\"/g, '')const url = window.URL.createObjectURL(res)console.log('url---',url)aLink.href = urlaLink.download = fileNameaLink.click()aLink.remove()URL.revokeObjectURL(url)})