前端根据生成的文档流下载、预览文档

下载：

axios({

    url: `url`,

    method: "post",

    data: {

     参数...

    },

    responseType: "blob",

  })

.then((res)=>{

　　const link = document.createElement("a");

      let blob = new Blob([res.data], { type: "application/vnd.ms-excel" });

      link.style.display = "none";

      link.href = URL.createObjectURL(blob);

      link.download = "下载文档" + ".xls"; //下载的文件名

      document.body.appendChild(link);

      link.click();

      document.body.removeChild(link);

})

预览：

axios({

    url: `url`,

    method: "post",

    data: {

     参数...

    },

    responseType: "blob",

  })

.then((res)=>{

　const blob = new Blob([response], { type: "application/pdf" });

    const href = window.URL.createObjectURL(blob);

    window.open(href);

})