1.添加ajax请求（responseType:'blob',）

const exportExcelApi = (options)=>{

    return fetchPost(IP+'/airport/downExcel', {body:options,responseType:'blob',});

}

 2.请求到流下载到本地

 const down = (type,response)=>{// 创建隐藏的可下载链接  response.data是返回的二进制流 根据后台返回的数据const url = window.URL.createObjectURL(new Blob([response.data])); //const link = document.createElement('a');link.href = url;console.log(url,"url")link.setAttribute('download', type+'.xlsx'); // 自定义文件名document.body.appendChild(link);// 模拟点击下载link.click();// 清除无用的URL对象window.URL.revokeObjectURL(url);link.remove();}