vue-element-admin接入abp vNext权限

简介：

Vue Element Admin是基于vue、element ui开发的后台管理ui，abp vNext是abp新一代微服务框架。本篇将会介绍如何改造Vue Element Admin权限验证并接入abp vNext的微服务权限模块。上篇已经介绍过Vue Element Admin登陆过程，并实现了假登陆，本篇将介绍Vue Element Admin（后称Admin）实现登陆权限验证。

Vue Element Admin权限验证代码分析

Admin在permission.js实现了全局登陆验证，主要代码以下：

  const hasToken = getToken()

  if (hasToken) {
    if (to.path === '/login') {
      // if is logged in, redirect to the home page
      next({ path: '/' })
      NProgress.done()
    } else {
      // determine whether the user has obtained his permission roles through getInfo
      const hasRoles = store.getters.roles && store.getters.roles.length > 0
      if (hasRoles) {
        next()
      } else {
        try {
          // get user info
          var user = await store.dispatch('user/getInfo')
          // note: roles must be a object array! such as: ['admin'] or ,['developer','editor']
          const { roles } = await store.dispatch('user/getPermissions', user.sub)

          // generate accessible routes map based on roles
          const accessRoutes = await store.dispatch('permission/generateRoutes', roles)

          // dynamically add accessible routes
          router.addRoutes(accessRoutes)

          // hack method to ensure that addRoutes is complete
          // set the replace: true, so the navigation will not leave a history record
          next({ ...to, replace: true })
        } catch (error) {
          // remove token and go to login page to re-login
          await store.dispatch('user/resetToken')
          Message.error(error || 'Has Error')
          next(`/login?redirect=${to.path}`)
          NProgress.done()
        }
      }
    }
  } else {
    /* has no token*/

    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next()
    } else {
      // other pages that do not have permission to access are redirected to the login page.
      next(`/login?redirect=${to.path}`)
      NProgress.done()
    }
  }

分析代码得知在访问Admin时会首先获取token，若是token不存在会直接跳转登陆，若是token存在会判断当前路由，若是路由指向login则直接进入首页。进入首页前会判断是否获取用户权限，若是没有则从新获取用户权限。主要改造在：

const { roles } = await store.dispatch('user/getPermissions', user.sub)

getPermissions代码以下：

  getPermissions({ commit }, sub) {
    return new Promise((resolve, reject) => {
      var params = {}
      params.providerName = 'User'
      params.providerKey = sub
      axiosMethods.getPermissions('/api/abp/permissions', params)
        .then(response => {
          const data = {}
          data.roles = []

          response.groups.forEach(element => {
            element.permissions.forEach(item => {
              data.roles.push(item.name)
            })
          })

          if (!data.roles || data.roles.length <= 0) {
            reject('getInfo: roles must be a non-null array!')
          }
          commit('SET_ROLES', data.roles)
          resolve(data)
        })
    })
  }

代码分析：经过user的sub信息请求/api/abp/permissions接口，获取权限后返回数组data。permission.js根据返回的roles动态挂载路由，此时权限改造就完成了，下面在权限测试页面进行测试。

修改权限测试页面路由配置以下：

 

 登陆后菜单以下：

总结

登陆、权限验证改造完毕后在菜单中加入系统管理---用户、角色管理后就能够开始业务开发了。