[Abp vNext微服务实践] - vue-element-admin登录二 - JavaScript

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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登录过程，并实现了假登录，本篇将介绍Vue Element Admin（后称Admin）实现登录权限验证。

Vue Element Admin权限验证代码分析

Admin在permission.js实现了全局登录验证，主要代码如下：

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，如果token不存在会直接跳转登录，如果token存在会判断当前路由，如果路由指向login则直接进入首页。进入首页前会判断是否获取用户权限，如果没有则重新获取用户权限。主要改造在：

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

getPermissions代码如下：

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

for(var role in response.auth.grantedPolicies){
data.roles.push(role)
}

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：通过user的token信息请求/api/abp/application-configuration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如下：