• vue --》动态路由的实现 (根据用户的权限来访问对应的模块)


      为了设置用户的访问权限,所以在一个vue工程中,往往需要前端和后端开发人员共同配合设置动态路由,

    进而实现根据用户的权限来访问对应的模块

      1.首先在登录页面,前端跟据后端返回的路由信息进行配置,配置后存储到本地以便使用

    login.vue页面
        在methods中:
      //配置路由的方法 getMenuList(){
           let menuList = '后端给你返回的数据'     let sysRouter
    = []; let tempOne = {}; menuList.filter((menuOne, indexOne) => { tempOne = {}; tempOne.title = menuOne.name; //这几个属性均为路由的一些配置项以及所用到的一些信息,根据实际情况进行编写 tempOne.icon = menuOne.icon; tempOne.path = menuOne.perm; tempOne.redirect = menuOne.url; tempOne.children = []; tempOne.component = Main; //Main是个文件 每个页面都依赖于这个文件 let tempTwo = {}; if (menuOne.children.length > 0) { menuOne.children.filter((menuTwo, indexTwo) => {    tempTwo = {}; tempTwo.title = menuTwo.name; tempTwo.path = menuTwo.url; tempTwo.component = () => import(`@/pages${menuTwo.path}.vue`); tempOne.children.push(tempTwo); }); } sysRouter.push(tempOne); });
            sessionStorage.setItem("sysRouter", JSON.stringify(sysRouter));
        },
      //点击登录按钮的方法
      submitBtn(){
        
    let parm = {
                    username: this.key,
                    password: this.pwd,
                 
                };
        api.login(parm).then(res => {
           if(res){
             //首先将你的所需要的信息存储到本地,例如token,用户信息的等
             //调用配置路由信息的方法
             //然后跳转到首页
             //最后刷新一下页面,不然会白屏

    sessionStorage.setItem("loginToken", res.data.data.token);

              this.getMenuList();
               this.$router.push({
                           path: "/home/home"
                      });
     
               setTimeout(()=>{
                           window.location.reload();
                      },50)

           }
        })
    
    

       }

    接下来就是最关键的一步 配置 router里面的index.js文件

    import Vue from 'vue';
    import Router from 'vue-router';
    import store from '../store';
    import Main from '@/pages/Main.vue';
    
    Vue.use(Router);
    
    
    /*
     * 
     *  路由重复点击 警告问题解决
     *  
    */ 
    const originalPush = Router.prototype.push
    Router.prototype.push = function push(location) {
      return originalPush.call(this, location).catch(err => err)
    }
    
    
    
    /*
     *---- 登录前不运行,刷新时运行,用addRoutes加载路由 begin ----
     */
    let systemRouter = [];
    let localRouter = window.sessionStorage.getItem('sysRouter'); //用于刷新时加载导航 功能和addRoutes等同1
    if (localRouter) {
      //因为未登录 localRouter不存在,故不运行;只有刷新时才运行
      let localJsonRouter = JSON.parse(localRouter);
      systemRouter = localJsonRouter;
      systemRouter.filter(item => {
        //需要重新绑定 component
        item.component = Main;
        if (item.children.length > 0) {
          item.children.filter(itemTwo => {
            itemTwo.component = () => import(`@/pages${itemTwo.path}.vue`);
          });
        }
      });
    } else {
      systemRouter = [];
    }
    /*
     *---- 登录前不运行,刷新时运行,用addRoutes加载路由 end ----
     */
    
    // 定义其他路由 这一般都为3级路由
    let otherRouter = [
      {
        path: '/menu2_0_1',
        title: '设计数据管理',
        icon: 'el-icon-s-opportunity',
        redirect: '/designDataManage/clientRequireManage',
        component: Main,
        children: [
          {
            path: '/designDataManage/clientRequireManage/requireFileList',
            title: '客户需求管理',
            component: () =>
              import(
                '@/pages/designDataManage/requireFileList/requireFileList.vue'
              )
          },
          {
            path: '/designDataManage/designDataManageHome/designDataList',
            title: '设计数据管理',
            component: () =>
              import(
                '@/pages/designDataManage/designDataList/designDataList.vue'
              )
          },
          {
            path: '/designDataManage/designDataManageHome/FLDataList',
            title: '设计数据管理',
            component: () =>
              import('@/pages/designDataManage/FLfileList/FLfileList.vue')
          },
          {
            path:
              '/designDataManage/designDataManageHome/workAfterFileList',
            title: '设计数据管理',
            component: () =>
              import(
                '@/pages/designDataManage/workAfterFileList/workAfterFileList.vue'
              )
          },
          {
            path: '/designDataManage/designDataManageHome/numFileList',
            title: '设计数据管理',
            component: () =>
              import(
                '@/pages/designDataManage/numFileList/numFileList.vue'
              )
          },
          {
            path: '/designDataManage/printFileManage/printFileList',
            title: '制版文件管理',
            component: () =>
              import(
                '@/pages/designDataManage/printFileList/printFileList.vue'
              )
          }
        ]
      },
      {
        path: '/menu3_0_1',
        title: '工艺数据管理',
        icon: 'el-icon-s-open',
        redirect: '/workDataMange/workDataMangeRepair',
        component: Main,
        children: [
          {
            path: '/workDataMange/workDataMangeRepair/workDataMangeList',
            title: '客户需求管理',
            component: () =>
              import(
                '@/pages/workDataMange/workDataManageList/workDataManageList.vue'
              )
          }
        ]
      },
      {
        path: '/menu4_0_1',
        title: '打样任务管理',
        icon: 'el-icon-s-order',
        redirect: '/printTaskManage/printTaskManageHome',
        component: Main,
        children: [
          {
            path:
              '/printTaskManage/printTaskManageHome/printTaskManageList',
            title: '编辑打样任务',
            component: () =>
              import(
                '@/pages/printTaskManage/printTaskManageList/printTaskManageList.vue'
              )
          }
        ]
      },
      {
        path: '/menu4_0_2',
        title: '打样任务管理',
        icon: 'el-icon-s-order',
        redirect: '/printOAManage/printOAManageHome',
        component: Main,
        children: [
          {
            path: '/printOAManage/printOAManageHome/prinOAkManageList',
            title: '编辑打样任务',
            component: () =>
              import(
                '@/pages/printTaskManage/printOAmanageList/printOAmanageList.vue'
              )
          },
          {
            path:
              '/printOAManage/printOAManageHome/prinOAkManageStartWorkList',
            title: '开工',
            component: () =>
              import(
                '@/pages/printTaskManage/prinOAkManageStartWorkList/prinOAkManageStartWorkList.vue'
              )
          },
          {
            path: '/printOAManage/printOAManageHome/paraDetail',
            name: 'paramaDetail',
            title: '工艺参数详情',
            component: () =>
              import(
                '@/pages/printTaskManage/prinOAkManageStartWorkList/paramaDetail.vue'
              )
          }
        ]
      },
      {
        path: '/menu5_0_2',
        title: '打样基线管理',
        icon: 'el-icon-s-order',
        redirect: '/printBasicLineManage/importantColorData',
        component: Main,
        children: [
          {
            path:
              '/printBasicLineManage/importantColorData/importantColorDataList',
            title: '关键颜色详情',
            component: () =>
              import(
                '@/pages/printBasicLineManage/importantColorDataList/importantColorDataList.vue'
              )
          }
        ]
      }
    ];
    
    //声明路由对象,实例化VueRouter
    const router = new Router({
      routes: [
        //登录路由
        {
          path: '/',
          name: 'login',
          component: () => import('@/pages/login.vue')
        },
        {
          path: '/error',
          name: 'error',
          component: () => import('@/pages/error.vue')
        },
        {
          path: '/resetPassword',
          name: 'resetPassword',
          component: () => import('@/pages/checkPassword/resetPassword.vue')
        },
        {
          path: '/checkNameAndEmail',
          name: 'checkNameAndEmail',
          component: () => import('@/pages/checkPassword/checkNameAndEmail.vue')
        },
        ...systemRouter,
        ...otherRouter
      ]
    });
    
    /* * 加载页面之前 钩子函数
     
       * 使用场景:一般用在跳转前需要做校验的地方
       * to:Route即将要进入的目标 路由对象;
       * from:Route当前导航正要离开的路由;
       * next:Function一定要调用该方法来resolve这个钩子。执行效果依赖next方法的调用参数。
       * 
    */
    router.beforeEach(function (to, from, next) {
      store.dispatch('updateActItem', to.path);
    
      /*--- 动态绑定路由格式 begin ---*/
      let systemRouter = [];
      let localRouter = window.sessionStorage.getItem('sysRouter'); //用于刷新时加载导航
      //beforeEach,一步小心就进入到了他的死循环,浏览器都会崩亏,需要在一开始就加判断,拿到路由了,就直接next(),
      if (localRouter) {
        let localJsonRouter = JSON.parse(localRouter);
        systemRouter = localJsonRouter;
        systemRouter.filter(item => {
          //需要重新绑定 component
          item.component = Main;
          if (item.children.length > 0) {
            item.children.filter(itemTwo => {
              itemTwo.component = () =>
                import(`@/pages${itemTwo.path}.vue`);
            });
          }
        });
      } else {
        systemRouter = [];
      }
      if (window.sessionStorage.getItem('sysRouter') == null) {
        //不加这个判断,路由会陷入死循环 !!!!
        router.addRoutes(systemRouter); //动态加载路由
      }
    
    
    
      store.dispatch('updateMenuList', systemRouter);
      next();
      /*--- 动态绑定路由格式 end ---*/
    });
    export default router;

      

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  • 原文地址:https://www.cnblogs.com/wangqi2019/p/11851700.html
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