Vue 动态路由的实现及 Springsecurity 按钮级别的权限控制

router.beforeeach((to, from, next) => {
 nprogress.start() // start progress bar
 to.meta && (typeof to.meta.title !== 'undefined' && setdocumenttitle(`${to.meta.title} - ${domtitle}`))
 if (getstore('access_token')) {
 /* has token */
 if (to.path === '/user/login') {
  next({ path: '/other/list/user-list' })
  nprogress.done()
 } else {
  if (store.getters.roles.length === 0) {
  store
   .dispatch('getinfo')
   .then(res => {
   const username = res.principal.username
   store.dispatch('generateroutes', { username }).then(() => {
    // 根据roles生成可访问的路由表
    // 动态添加可访问路由表
    router.addroutes(store.getters.addrouters)
    const redirect = decodeuricomponent(from.query.redirect || to.path)
    if (to.path === redirect) {
    // hack方法 确保addroutes已完成 ,set the replace: true so the navigation will not leave a history record
    next({ ...to, replace: true })
    } else {
    // 跳转到目的路由
    next({ path: redirect })
    }
   })
   })
   .catch(() => {
   notification.error({
    message: '错误',
    description: '请求用户信息失败，请重试'
   })
   store.dispatch('logout').then(() => {
    next({ path: '/user/login', query: { redirect: to.fullpath } })
   })
   })
  } else {
  next()
  }
 }
 } else {
 if (whitelist.includes(to.name)) {
  // 在免登录白名单，直接进入
  next()
 } else {
  next({ path: '/user/login', query: { redirect: to.fullpath } })
  nprogress.done() // if current page is login will not trigger aftereach hook, so manually handle it
 }
 }
})

const permission = {
 state: {
 routers: constantroutermap,
 addrouters: []
 },
 mutations: {
 set_routers: (state, routers) => {
  state.addrouters = routers
  state.routers = constantroutermap.concat(routers)
 }
 },
 actions: {
 generateroutes ({ commit }, data) {
  return new promise(resolve => {
  generatordynamicrouter(data).then(routers => {
   commit('set_routers', routers)
   resolve()
  })
  })
 }
 }
}

import { axios } from '@/utils/request'
import { userlayout, basiclayout, routeview, blanklayout, pageview } from '@/layouts'
// 前端路由表
const constantroutercomponents = {
 // 基础页面 layout 必须引入
 basiclayout: basiclayout,
 blanklayout: blanklayout,
 routeview: routeview,
 pageview: pageview,
 // 需要动态引入的页面组件
 analysis: () => import('@/views/dashboard/analysis'),
 workplace: () => import('@/views/dashboard/workplace'),
 monitor: () => import('@/views/dashboard/monitor'),
 userlist: () => import('@/views/other/userlist')
 // ...more
}
// 前端未找到页面路由（固定不用改）
const notfoundrouter = {
 path: '*', redirect: '/404', hidden: true
}
/**
 * 获取后端路由信息的 axios api
 * @returns {promise}
 */
export const getrouterbyuser = (parameter) => {
 return axios({
 url: '/menu/' + parameter.username,
 method: 'get'
 })
}
/**
 * 获取路由菜单信息
 *
 * 1. 调用 getrouterbyuser() 访问后端接口获得路由结构数组
 * 2. 调用
 * @returns {promise<any>}
 */
export const generatordynamicrouter = (data) => {
 return new promise((resolve, reject) => {
 // ajax
 getrouterbyuser(data).then(res => {
  // const result = res.result
  const routers = generator(res)
  routers.push(notfoundrouter)
  resolve(routers)
 }).catch(err => {
  reject(err)
 })
 })
}
/**
 * 格式化 后端 结构信息并递归生成层级路由表
 *
 * @param routermap
 * @param parent
 * @returns {*}
 */
export const generator = (routermap, parent) => {
 return routermap.map(item => {
 const currentrouter = {
  // 路由地址 动态拼接生成如 /dashboard/workplace
  path: `${item && item.path || ''}`,
  // 路由名称，建议唯一
  name: item.name || item.key || '',
  // 该路由对应页面的 组件
  component: constantroutercomponents[item.component || item.key],
  // meta: 页面标题, 菜单图标, 页面权限(供指令权限用，可去掉)
  meta: { title: item.name, icon: item.icon || undefined, permission: item.key && [ item.key ] || null }
 }
 // 为了防止出现后端返回结果不规范，处理有可能出现拼接出两个 反斜杠
 currentrouter.path = currentrouter.path.replace('//', '/')
 // 重定向
 item.redirect && (currentrouter.redirect = item.redirect)
 // 是否有子菜单，并递归处理
 if (item.children && item.children.length > 0) {
  // recursion
  currentrouter.children = generator(item.children, currentrouter)
 }
 return currentrouter
 })
}

/**
 * 构造菜单树工具类
 * @author dang
 *
 */
public class treeutil {

 protected treeutil() {

 }

 private final static long top_node_id = (long) 1;
 /**
  * 构造前端路由
  * @param routes
  * @return
  */
 public static arraylist<menuentity> buildvuerouter(list<menuentity> routes) {
  if (routes == null) {
   return null;
  }
  list<menuentity> toproutes = new arraylist<>();
  routes.foreach(route -> {
   long parentid = route.getparentid();
   if (top_node_id.equals(parentid)) {
    toproutes.add(route);
    return;
   }
   for (menuentity parent : routes) {
    long id = parent.getid();
    if (id != null && id.equals(parentid)) {
     if (parent.getchildren() == null) {
      parent.initchildren();
     }
     parent.getchildren().add(route);
     return;
    }
   }
  });

  arraylist<menuentity> list = new arraylist<>();
  menuentity root = new menuentity();
  root.setname("首页");
  root.setcomponent("basiclayout");
  root.setpath("/");
  root.setredirect("/other/list/user-list");
  root.setchildren(toproutes);
  list.add(root);
  return list;
 }
}

/**
 * 菜单实体
 * @author dang
 *
 */
public class menuentity extends coreentity {
 private static final long serialversionuid = 1l;
 @tablefield("fparentid")
 private long parentid;
 @tablefield("fnumber")
 private string number;
 @tablefield("fname")
 private string name;
 @tablefield("fperms")
 private string perms;
 @tablefield("ftype")
 private int type;
 @tablefield("flongnumber")
 private string longnumber;
 @tablefield("fpath")
 private string path;
 @tablefield("fcomponent")
 private string component;
 @tablefield("fredirect")
 private string redirect;
 @tablefield(exist = false)
 private list<menuentity> children;
 @tablefield(exist = false)
 private menumeta meta;
 @tablefield(exist = false)
 private list<permissionentity> permissionlist;
 @override
 public int hashcode() {
  return number.hashcode();
 }
 @override
 public boolean equals(object obj) {
  return super.equals(obj(obj);
 }
 public void initchildren() {
  this.children = new arraylist<>();
 }
}

 // 获取用户信息
 getinfo ({ commit }) {
  return new promise((resolve, reject) => {
  getinfo().then(response => {
   const result = response
   if (result.authorities) {
   commit('set_permissions', result.authorities)
   commit('set_roles', result.principal.roles)
   commit('set_info', result)
   } else {
   reject(new error('getinfo: roles must be a non-null array !'))
   }
   commit('set_name', { name: result.principal.displayname, welcome: welcome() })
   commit('set_avatar', result.principal.avatar)
   resolve(response)
  }).catch(error => {
   reject(error)
  })
  })
 }

// 定义一些和权限有关的 vue指令
// 必须包含列出的所有权限，元素才显示
export const haspermission = {
 install (vue) {
 vue.directive('haspermission', {
  bind (el, binding, vnode) {
  const permissions = vnode.context.$store.state.user.permissions
  const per = []
  for (const v of permissions) {
   per.push(v.authority)
  }
  const value = binding.value
  let flag = true
  for (const v of value) {
   if (!per.includes(v)) {
   flag = false
   }
  }
  if (!flag) {
   if (!el.parentnode) {
   el.style.display = 'none'
   } else {
   el.parentnode.removechild(el)
   }
  }
  }
 })
 }
}
// 当不包含列出的权限时，渲染该元素
export const hasnopermission = {
 install (vue) {
 vue.directive('hasnopermission', {
  bind (el, binding, vnode) {
  const permissions = vnode.context.$store.state.user.permissions
  const per = []
  for (const v of permissions) {
   per.push(v.authority)
  }
  const value = binding.value
  let flag = true
  for (const v of value) {
   if (per.includes(v)) {
   flag = false
   }
  }
  if (!flag) {
   if (!el.parentnode) {
   el.style.display = 'none'
   } else {
   el.parentnode.removechild(el)
   }
  }
  }
 })
 }
}
// 只要包含列出的任意一个权限，元素就会显示
export const hasanypermission = {
 install (vue) {
 vue.directive('hasanypermission', {
  bind (el, binding, vnode) {
  const permissions = vnode.context.$store.state.user.permissions
  const per = []
  for (const v of permissions) {
   per.push(v.authority)
  }
  const value = binding.value
  let flag = false
  for (const v of value) {
   if (per.includes(v)) {
   flag = true
   }
  }
  if (!flag) {
   if (!el.parentnode) {
   el.style.display = 'none'
   } else {
   el.parentnode.removechild(el)
   }
  }
  }
 })
 }
}
// 必须包含列出的所有角色，元素才显示
export const hasrole = {
 install (vue) {
 vue.directive('hasrole', {
  bind (el, binding, vnode) {
  const permissions = vnode.context.$store.state.user.roles
  const per = []
  for (const v of permissions) {
   per.push(v.authority)
  }
  const value = binding.value
  let flag = true
  for (const v of value) {
   if (!per.includes(v)) {
   flag = false
   }
  }
  if (!flag) {
   if (!el.parentnode) {
   el.style.display = 'none'
   } else {
   el.parentnode.removechild(el)
   }
  }
  }
 })
 }
}
// 只要包含列出的任意一个角色，元素就会显示
export const hasanyrole = {
 install (vue) {
 vue.directive('hasanyrole', {
  bind (el, binding, vnode) {
  const permissions = vnode.context.$store.state.user.roles
  const per = []
  for (const v of permissions) {
   per.push(v.authority)
  }
  const value = binding.value
  let flag = false
  for (const v of value) {
   if (per.includes(v)) {
   flag = true
   }
  }
  if (!flag) {
   if (!el.parentnode) {
   el.style.display = 'none'
   } else {
   el.parentnode.removechild(el)
   }
  }
  }
 })
 }
}

import vue from 'vue'
import { haspermission, hasnopermission, hasanypermission, hasrole, hasanyrole } from './utils/permissiondirect'

vue.use(haspermission)
vue.use(hasnopermission)
vue.use(hasanypermission)
vue.use(hasrole)
vue.use(hasanyrole)

 <a-button type="primary" @click="handleadduser()" v-haspermission="['sys:user:add']" icon="plus"