// import './mock/index.js';  // 该项目所有请求使用mockjs模拟 去掉mock

 页面url下载

console.log('res', res)
//token 是使页面不用去登录了
if (res.file) {
   window.location.href =
   Vue.prototype.$config.VUE_APP_BASE_IDSWAPI +
   Vue.prototype.$config.VUE_APP_IDSW +
   '/service/models/download?action=zip&filepath=' +
   encodeURIComponent(encodeURIComponent(res['file'])) +
`&token=${localStorage.getItem('inmsToken')}&accessToken=${localStorage.getItem('accessToken')}`
}

responseType: "blob",   

let blob = new Blob([response.data], { type: "application/zip" }); //注意是response 或者 response.data
let url = window.URL.createObjectURL(blob);  这三句最重要！！！

//普通代码
axios.post(postUrl, params, {responseType: 'arraybuffer'}).then(res => {
    // 创建Blob对象，设置文件类型
    let blob = new Blob([res.data], {type: "application/vnd.ms-excel"})
    let objectUrl = URL.createObjectURL(blob) // 创建URL
    location.href = objectUrl;
    URL.revokeObjectURL(objectUrl); // 释放内存
})

downloadAll() {
      axios({
        method: "get",
        url: "api/TemplateDownload/GetAllTemplateZIP",
        headers: {
          "content-type": "application/json; charset=utf-8",
          Authorization: Cookies.get("token") || "",
        },
        responseType: "blob",
      })
        .then((response) => {
          let blob = new Blob([response.data], { type: "application/zip" });
          let url = window.URL.createObjectURL(blob);
          const link = document.createElement("a"); // 创建a标签
          link.href = url;
          link.download = "模板下载"; // 重命名文件
          link.click();
          URL.revokeObjectURL(url); // 释放内存
          this.checkList = [];
        })
        .catch((error) => {
          console.log(error.data);
        });
        
    },


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

dl() {
      axios({
        method: "get",
        url: "http://10.180.170.3:8794/tRptMwStdClt/exportData?time=202104",
        responseType: "arraybuffer",
      })
        .then((response) => {
          console.log(response);
          let blob = new Blob([response.data], {
            type: "application/vnd.ms-excel",
          });
          let url = window.URL.createObjectURL(blob);
          const link = document.createElement("a"); // 创建a标签
          link.href = url;
          link.download = "模板下载"; // 重命名文件
          link.click();
          URL.revokeObjectURL(url); // 释放内存
          this.checkList = [];
        })
        .catch((error) => {
          console.log(error.data);
        });
    },

获取到了后台传过来的excel文件 前端用vue怎么接收并导出？ - 中文 - Vue Forum

vue.js前端实现excel表格导出和获取headers里的信息 - 五个半柠檬 - OSCHINA - 中文开源技术交流社区

java后台需要设置

 response.addHeader("Content-Disposition", "attachment;filename=" + fileName + ".xlsx");
 response.setHeader("Access-Control-Expose-Headers","Content-Disposition");

才能获取到文件名等信息

 // 导出execel2
    handleExcel() {
      this.$http({
        url: this.$http.adornUrl(url),
        method: "post",
        responseType: "blob",//!!!!
        params: this.$http.adornParams({
          userAccount: this.userName,
        }),
      }).then((res) => {
        // console.log(res, "res");
        let blob = new Blob([res.data], { type: "application/vnd.ms-excel" });
        let fileName = decodeURI(
            response.headers["content-disposition"].split(";")[1].split("=")[1]
          );
        let url = window.URL.createObjectURL(blob);
        const link = document.createElement("a"); // 创建a标签
        link.href = url;
        link.download = fileName; // 重命名文件
        link.click();
        URL.revokeObjectURL(url); // 释放内存
      });
    },