第一步

import Cookies from "js-cookie";

//将需要的信息放入cookie
Cookies.set("deptId", res.user.dept.deptId, { expires: 30 });

引入cookies

import Cookies from "js-cookie";

	// 查询参数
      queryParams: {
        deptName: undefined,
        status: undefined,
        deptId: undefined

  //从cookies中获取参数
  created() {
    this.deptId = Cookies.get("deptId");
    this.getList();
  },

//后端发送请求携带参数
  methods: {
    /** 查询企业列表 */
    getList() {
      this.loading = true;
      this.queryParams.deptId= this.deptId;
      deptList(this.queryParams).then(response => {
        this.deptList = this.handleTree(response.data, "deptId");
        this.loading = false;
      });
    },