// 预览文件preview: function(item) {var vm = this;if (!item.raw) {var itemBasicId = this.form.itemBasicIdvar url =ctx + '/aea/item/basic/getItemDocOrTemplateFile.do?itemBasicId='+itemBasicId+'&fileType=applyTableTemplate'axios({method: 'GET',headers: { 'Authorization': 'bearer '+localStorage.getItem("access_token") },url: url,originResponse: true,responseType: 'blob' // 更改responseType类型为 blob}).then( function(res) {vm.previewPdfAndPic(res.data)}).catch(function(err) {console.log(err)})}else{// vm.openBlobFile(item)}},previewPdfAndPic: function (<