FE_occupationlab_client/src/libs/util.js

import cookies from "./util.cookies";
import { _local, _session } from "./util.db";
import { Message } from "element-ui";
import store from "@/store";
import axios from "axios";
import api from "@/api";
import Setting from "@/setting";

let logout = false;
// 文件后缀集合
const exts = {
  video: 'mp4,3gp,mov,m4v,avi,dat,mkv,flv,vob,rmvb,rm,qlv',
  audio: 'mp3,aac,ape,flac,wav,wma,amr,mid',
  img: 'jpg,jpeg,png,gif,svg,psd',
  doc: 'doc,docx,txt,xls,xlsx,csv,xml,ppt,pptx'
}
const util = {
    cookies,
    local: _local,
    session: _session,
    // 传入身份证获取生日
    getBirth(idCard) {
        var birthday = "";
        if (idCard != null && idCard != "") {
            if (idCard.length == 15) {
                birthday = "19" + idCard.slice(6, 12);
            } else if (idCard.length == 18) {
                birthday = idCard.slice(6, 14);
            }
            birthday = birthday.replace(/(.{4})(.{2})/, "$1-$2-");
            //通过正则表达式来指定输出格式为:1990-01-01
        }
        return birthday;
    },
    // new Date('2020-11-12 00:00:00') 在IE下失效，因此把-替换成/
    dateCompatible(date) {
        return date.replace(/\-/g, "/");
    },
    // 日期时间前面补零
    formateTime(num) {
        return num < 10 ? `0${num}` : num;
    },
    //返回格式化时间，传参例如："yyyy-MM-dd hh:mm:ss"
    formatDate(fmt, date) {
        var date = date ? date : new Date();
        var o = {
            "M+": date.getMonth() + 1,                 //月份
            "d+": date.getDate(),                    //日
            "h+": date.getHours(),                   //小时
            "m+": date.getMinutes(),                 //分
            "s+": date.getSeconds(),                 //秒
            "q+": Math.floor((date.getMonth() + 3) / 3), //季度
            "S": date.getMilliseconds()             //毫秒
        };
        if (/(y+)/.test(fmt)) {
            fmt = fmt.replace(RegExp.$1, (date.getFullYear() + "").substr(4 - RegExp.$1.length));
        }
        for (var k in o) {
            if (new RegExp("(" + k + ")").test(fmt)) {
                fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
            }
        }
        return fmt;
    },
    // 移除数组中指定值
    removeByValue(arr, val) {
        for (var i = 0; i < arr.length; i++) {
            if (arr[i] == val) {
                arr.splice(i, 1);
                break;
            }
        }
    },
    // 传入文件后缀判断是否是视频
    isVideo(ext) {
        if (exts.video.includes(ext)) return true;
        return false;
    },
    // 传入文件后缀判断是否是音频
    isAudio(ext) {
        if (exts.audio.includes(ext)) return true;
        return false;
    },
    // 传入文件后缀判断是否是图片
    isImg(ext) {
        if (exts.img.includes(ext)) return true;
        return false;
    },
    // 传入文件后缀判断是否是pdf以外的文档
    isDoc(ext) {
        if (exts.doc.includes(ext)) return true;
        return false;
    },
    // 判断是否能够预览
    canPreview(ext) {
      if (!util.isVideo(ext) && !util.isAudio(ext) && !util.isImg(ext) && !util.isDoc(ext)) return false
      return true
    },
    // 循环去除html标签
    removeHtmlTag(list, attr) {
        list.map(n => {
            n[attr] = n[attr].replace(/<\/?.+?>/gi, "");
        });
        return list;
    },
    // 传入文件名获取文件后缀
    getFileExt(fileName) {
        return fileName.substring(fileName.lastIndexOf(".") + 1);
    },
    // 传入文件名和路径，下载图片视频，支持跨域，a标签加download不支持跨域
    downloadFile(fileName, url) {
        var x = new XMLHttpRequest();
        x.open("GET", url, true);
        x.responseType = "blob";
        x.onload = function(e) {
            var url = window.URL.createObjectURL(x.response);
            var a = document.createElement("a");
            a.href = url;
            a.download = fileName;
            a.click();
        };
        x.send();
    },
    // 传入文件名和数据，下载文件
    downloadFileDirect(fileName,data) {
        if ('download' in document.createElement('a')) { // 非IE下载
            const elink = document.createElement('a')
            elink.download = fileName
            elink.style.display = 'none'
            elink.href = URL.createObjectURL(data)
            document.body.appendChild(elink)
            elink.click()
            URL.revokeObjectURL(elink.href) // 释放URL 对象
            document.body.removeChild(elink)
        } else { // IE10+下载
            navigator.msSaveBlob(data, fileName)
        }
    },
    // 成功提示
    successMsg(message, duration = 3000) {
        Message.closeAll();
        return Message.success({
            message,
            showClose: true,
            duration
        });
    },
    // 警告提示
    warningMsg(message, duration = 3000) {
        Message.closeAll();
        return Message.warning({
            message,
            showClose: true,
            duration
        });
    },
    // 错误提示
    errorMsg(message, duration = 3000) {
        Message.closeAll();
        return Message.error({
            message,
            showClose: true,
            duration
        });
    },
    // 登录互踢
    getToken() {
        if (process.env.NODE_ENV == "production") {
            if (store.state.user.dataTime && !logout) {
                axios.get(`${api.queryToken}?token=${_local.get(Setting.tokenKey)}`).then(res => {
                    if (store.state.user.dataTime && (res.data.message != store.state.user.dataTime)) {
                        logout || Message.error("您已在另一台设备登录，本次登录已下线！");
                        logout = true;
                        setTimeout(() => {
                            _local.remove(Setting.storeKey);
                            _local.remove(Setting.tokenKey);
                            location.reload();
                        }, 1500);
                    }
                }).catch(err => {
                });
            }
        }
    }
};

export default util;