party_construct_web/src/utils/rockeryutil.js

/*
 * @Description: 定制封装公共方法
 * @Author: Rockery
 * @Date: 2021-04-26 15:53:59
 * @LastEditors: Rockery
 * @LastEditTime: 2021-12-29 17:56:27
 * @FilePath: \party_construct_web\src\utils\rockeryutil.js
 * @Copyright: Copyright (c) 2016~2021 Rockery(1113269755@qq.com)
 */
import request from '@/utils/request';
import { parseTime } from "@/utils/ruoyi";
import { Message } from 'element-ui';

/**
 * @description: 开启遮护罩
 * @param {String} paramText 遮护罩描述信息
 * @param {String} paramTarget 遮护罩位置，默认全局
 * @return {*} 遮护罩对象
 */
export function handleOpenLoading(paramText, paramTarget) {
  if (!paramTarget) {
    return this.$loading({
      lock: true,
      text: paramText || "正在拼命加载中...",
      spinner: 'el-icon-loading',
      background: 'rgba(0, 0, 0, 0.5)'
    });
  }

  return this.$loading({
    lock: true,
    text: paramText || "正在拼命加载中...",
    spinner: 'el-icon-loading',
    background: 'rgba(0, 0, 0, 0.5)',
    target: paramTarget
  });
}

/**
 * @description: 关闭遮护罩
 * @param {*} paramLoading 遮护罩对象
 */
export function handleCloseLoading(paramLoading) {
  (null !== paramLoading) && paramLoading.close();
}

/**
 * 图片加载失败事件
 * @param {Object} ele
 */
export function imgViewerOnerror(ele) {
  const img = ele.srcElement;
  img.src = require('@/assets/images/empty_img.png');
  img.onerror = null;
}

/**
 * 常规下载PDF文件
 * @param {String} pdfFileUrl PDF文件地址 必传
 * @param {String} pdfFileName PDF文件别名 非必传
 */
export function regularDownloadPdfFile(pdfFileUrl, pdfFileName) {
  if (pdfFileUrl) {
    request({
      url: pdfFileUrl,
      method: 'get',
      responseType: 'blob'
    }).then(res => {
      // 文件流
      const blob = new Blob([res], { type: 'application/pdf;charset=utf-8' });

      // 文件名称
      const filename = `${pdfFileName || 'PDF文件'}_${parseTime(new Date(), "{y}-{m}-{d}")}_${new Date().getTime()}.pdf`;

      // 执行文件下载操作
      if (typeof window.navigator.msSaveBlob !== "undefined") {
        window.navigator.msSaveBlob(blob, filename);
        Message({
          message: "下载PDF文件成功！",
          type: 'success',
          showClose: true,
          center: true
        });
      } else {
        // 创建一个指向该参数对象的URL
        const blobURL = window.URL.createObjectURL(blob);

        // 创建隐藏<a>标签进行下载
        const tempLink = document.createElement("a");
        tempLink.style.display = "none";
        tempLink.href = blobURL;
        tempLink.setAttribute("download", filename);
        if (typeof tempLink.download === "undefined") {
          tempLink.setAttribute("target", "_blank");
        }
        document.body.appendChild(tempLink);
        tempLink.click();
        window.URL.revokeObjectURL(blobURL);
        document.body.removeChild(tempLink);
        Message({
          message: "下载PDF文件成功！",
          type: 'success',
          showClose: true,
          center: true
        });
      }
    }).catch(() => {});
  } else {
    Message({
      message: "PDF文件地址不能为空！",
      type: 'error',
      showClose: true,
      center: true
    });
  }
}