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"