webApi查询数据保存为Excel 

       /// <summary>/// 获取LMI3D相机涂胶测量数据/// </summary>/// <returns></returns>[HttpPost(Name = "GetLMI3DGlueDataToExcel")]public async Task<IActionResult> GetLMI3DGlueDataToExcel(QueryGlueMeasurementModel qgmm){List<GlueMeasurementModel> result = new List<GlueMeasurementModel>();result = await LinkAsiaDB.Camera3D.GetGlueMeasurement( qgmm.CreatedDate);int x = await NPOIExcelHelper.RenderToExcel(result, "defult", "D:\\Test.xlsx");string fileExt = Path.GetExtension("D:\\Test.xlsx");//获取文件的ContentTypevar provider = new FileExtensionContentTypeProvider();var memi = provider.Mappings[fileExt];var fileBytes = System.IO.File.ReadAllBytes("D:\\Test.xlsx");return File(fileBytes, memi, "welcome.xlsx");}

swagger中可以下载 

 

Vue页面 

			<el-row><el-date-picker v-model="QueryDate" type="date" placeholder="Pick a day" :size="size" /><el-button type="primary" @click="QueryFoamMeasurement()">查询</el-button><el-button type="primary" @click="ToExcel()">导出excel</el-button><a :href="DownloadUrl" download="welcom.xlsx">abc</a></el-row>

导出方法 

const ToExcel = async () => {let CreatedDate = dateFormat(QueryDate.value, 'YYYY-MM-DD')let pa = { No: "", Barcode: "", CreatedDate: CreatedDate }await axios.post(global_const.WEBAPI + `LMI3DData/GetLMI3DGlueDataToExcel`, pa, { responseType: 'blob' }).then(function (response) { console.log(response); DownloadUrl.value = window.URL.createObjectURL(new Blob([response.data]));return response.data;}).catch(function (error) {//ElMessage.error(cmd + '命令执行异常！' + error)console.log(error);});download(DownloadUrl.value )
}const download = (url :any) => {// 处理图片下载let a = document.createElement("a");a.setAttribute("href", url);a.setAttribute("download",'');a.setAttribute("target", "_blank");a.download = "welcome1.xlsx"a.click(); 
}