get请求,导出文件

    /**
     * @author
     * @function: 导出文件(get请求)
     * @param {*} linkUrl 下载链接
     */
   let exportFileByGet = function (linkUrl) {
      if (!linkUrl) {
        return false;
      }
      if (
        navigator.userAgent.indexOf("Chrome") > -1 &&
        navigator.userAgent.indexOf("Safari") > -1
      ) {
        var a = document.createElement("a");
        a.href = linkUrl;
        a.click();
      } else {
        window.open(linkUrl, "_blank");
      }
    };

 post请求,导出文件

    /**
     * @author:
     * @function: 导出文件(post请求)
     * @param {*} queryUrl 请求链接
     * @param {*} queryParams 请求参数
     * @param {*} cb 回调函数
     *
     */
    let exportFileByPost = function (
      queryUrl,
      queryParams = {},
      cb
    ) {
      if (!queryUrl) {
        return false;
      }
      this.$axios()
        .post(queryUrl, queryParams, {
          responseType: "blob",
        })
        .then(
          (res) => {
            // 异常处理
            if (res.data.type == "application/json") {
              let reader = new FileReader();
              reader.readAsText(res.data, "utf-8");
              reader.onload = function (e) {
                let result = JSON.parse(reader.result);
                this.$message.error(result.msg || "error!");
                cb();
              };
              return false;
            }
            let fileName = "";
            if (res.headers["content-disposition"]) {
              fileName = decodeURI(
                res.headers["content-disposition"].split(`filename=`)[1] //此处根据实际返回下载文件名称分割
              );
            }
            let type = res.headers["content-type"];
            if (!type) {
              this.$message.error("file type error!");
              cb();
            }
            let blob = new Blob([res.data], {
              type: type, //根据返回文件类型
            });
            if (window.navigator.msSaveOrOpenBlob) {
              navigator.msSaveBlob(blob, fileName);
            } else {
              // 非IE下载
              const elink = document.createElement("a");
              elink.style.display = "none";
              elink.href = URL.createObjectURL(blob);
              if (fileName) elink.download = fileName;
              document.body.appendChild(elink);
              elink.click();
              setTimeout(() => {
                URL.revokeObjectURL(elink.href); // 释放URL对象
                document.body.removeChild(elink);
              }, 5000); //解决部分浏览器下载时“无此文件”问题
            }
            cb();
          },
          (res) => {
            this.$message.error(res.msg || "error!");
            cb();
          }
        );
    };

 

posted on 2021-08-19 16:53  阿梅M  阅读(929)  评论(0编辑  收藏  举报