实战14 权限处理

目录

1、权限处理后端接口

1.1 SpringSecurityConfig

1.2 在控制器中加入权限控制

?2、前端页面按钮权限判断

2.1 保存权限字段

2.2 编写按钮权限判断?

2.3?引入按钮权限判断脚本

2.4?按钮权限判断脚本使用

3、token过期处理

3.1 编写Store代码

3.2 编写刷新token新代码

3.3?编写token过期方法

3.4?编写请求拦截

---

1、权限处理后端接口

1.1 SpringSecurityConfig

@Configuration
@EnableWebSecurity
//开启权限注解控制
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SpringSecurityConfig extends WebSecurityConfigurerAdapter {

1.2 在控制器中加入权限控制

package com.cizhu.controller;


import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.cizhu.dto.UserRoleDTO;
import com.cizhu.entity.Role;
import com.cizhu.entity.User;
import com.cizhu.service.IRoleService;
import com.cizhu.service.IUserService;
import com.cizhu.utils.Result;
import com.cizhu.vo.query.RoleQueryVo;
import com.cizhu.vo.query.UserQueryVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import java.util.List;

/**
 * <p>
 *  前端控制器
 * </p>
 *
 * @author cizhu
 * @since 2023-12-14
 */
@RestController
@RequestMapping("/api/user")
public class UserController {

    @Resource
    private IUserService userService;

    @Resource
    private IRoleService roleService ;

    @Resource
    private PasswordEncoder passwordEncoder;

    @GetMapping("/listAll")
    public Result findAll(){
        List<User> userList = userService.list();
        return Result.ok(userList);
    }

    /**
     * 查询用户列表
     * @param userQueryVo
     * @return
     */
    @GetMapping("/list")
    public Result list(UserQueryVo userQueryVo) {
        //创建分页信息
        IPage<User> page = new Page<User>(userQueryVo.getPageNo(), userQueryVo.getPageSize());
        //调用分页查询方法
        userService.findUserListByPage(page, userQueryVo);
        //返回数据
        return Result.ok(page);
    }

    /**
     * 添加用户
     *
     * @param user
     * @return
     */
    @PostMapping("/add")
    @PreAuthorize("hasAuthority('sys:user:add')")
    public Result add(@RequestBody User user) {
        //查询用户
        User item = userService.findUserByUserName(user.getUsername());
        //判断对象是否为空
        if (item != null) {
            return Result.error().message("该登录名称已被使用，请重新输入！");
        }
        //密码加密
        user.setPassword(passwordEncoder.encode(user.getPassword()));
        //调用保存用户信息的方法
        if(userService.save(user)){
            return Result.ok().message("用户添加成功");
        }
        return Result.error().message("用户添加失败");
    }

    /**
     * 修改用户
     *
     * @param user
     * @return
     */
    @PutMapping("/update")
    @PreAuthorize("hasAuthority('sys:user:edit')")
    public Result update(@RequestBody User user) {
        //查询用户
        User item = userService.findUserByUserName(user.getUsername());
        //判断对象是否为空,且查询到的用户ID不等于当前编辑的用户ID，表示该名称被占用
        if (item != null && item.getId() != user.getId()) {
            return Result.error().message("登录名称已被占用！");
        }
        //调用修改用户信息的方法
        if(userService.updateById(user)){
            return Result.ok().message("用户修改成功");
        }
        return Result.error().message("用户修改失败");
    }

    /**
     * 删除用户
     * @param id
     * @return
     */
    @DeleteMapping("/delete/{id}")
    @PreAuthorize("hasAuthority('sys:user:delete')")
    public Result delete(@PathVariable Long id) {
        //调用删除用户信息的方法
        if(userService.deleteById(id)){
            return Result.ok().message("用户删除成功");
        }
        return Result.error().message("用户删除失败");
    }

    /**
     * 获取分配角色列表
     * @param roleQueryVo
     * @return
     */
    @GetMapping("/getRoleListForAssign")
    @PreAuthorize("hasAuthority('sys:user:assign')")
    public Result getRoleListForAssign(RoleQueryVo roleQueryVo){
        //创建分页对象
        IPage<Role> page = new Page<Role>(roleQueryVo.getPageNo(), roleQueryVo.getPageSize());
        //调用查询方法
        roleService.findRoleListByUserId(page,roleQueryVo);
        //返回数据
        return Result.ok(page);
    }
    /**
     * 根据用户ID查询该用户拥有的角色列表
     * @param userId
     * @return
     */
    @GetMapping("/getRoleByUserId/{userId}")
    @PreAuthorize("hasAuthority('sys:user:assign')")
    public Result getRoleByUserId(@PathVariable Long userId){
        //调用根据用户ID查询该用户拥有的角色ID的方法
        List<Long> roleIds = roleService.findRoleIdByUserId(userId);
        return Result.ok(roleIds);
    }

    /**
     * 分配角色
     * @param userRoleDTO
     * @return
     */
    @PostMapping("/saveUserRole")
    @PreAuthorize("hasAuthority('sys:user:assign')")
    public Result saveUserRole(@RequestBody UserRoleDTO userRoleDTO){
        if (userService.saveUserRole(userRoleDTO.getUserId(),
                userRoleDTO.getRoleIds())) {
            return Result.ok().message("角色分配成功");
        }
        return Result.error().message("角色分配失败");
    }

}

?2、前端页面按钮权限判断

2.1 保存权限字段

2.2 编写按钮权限判断?

2.3?引入按钮权限判断脚本

2.4?按钮权限判断脚本使用

3、token过期处理

3.1 编写Store代码

utils/auth.js

//定义token过期时间的key
const timeKey = "expireTime"
/**
* 设置token过期时间
* @returns
*/
export function setTokenTime(time){
  return sessionStorage.setItem(timeKey,time);
}

/**
* 获取token过期时间
* @returns
*/
export function getTokenTime(){
  return sessionStorage.getItem(timeKey);
}

/**
* 清空token过期时间
* @returns
*/
export function removeTokenTime(){
  return sessionStorage.setItem(timeKey,0);
}

import { getToken, setToken, removeToken, setTokenTime } from '@/utils/auth'

store/user.js

import { login, logout, getInfo } from '@/api/user'
import { getToken, setToken, removeToken, setTokenTime } from '@/utils/auth'
import router, { resetRouter } from '@/router'

const state = {
  token: getToken(),  // 获取token信息
  name: '',
  avatar: '',
  introduction: '',
  roles: []
}

const mutations = {
  SET_TOKEN: (state, token) => {
    state.token = token
  },
  SET_INTRODUCTION: (state, introduction) => {
    state.introduction = introduction
  },
  SET_NAME: (state, name) => {
    state.name = name
  },
  SET_AVATAR: (state, avatar) => {
    state.avatar = avatar
  },
  SET_ROLES: (state, roles) => {
    state.roles = roles
  },
  SET_USERUID: (state, userId) => {
    state.userId = userId
  },
}

const actions = {
  // user login
  login({ commit }, userInfo) {
    const { username, password } = userInfo
    return new Promise((resolve, reject) => {
      login({ username: username.trim(), password: password }).then(response => {
        const { token, expireTime } = response
        commit('SET_TOKEN', token)
        setToken(token)
        // 设置token过期时间
        setTokenTime(expireTime)
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // get user info
  getInfo({ commit, state }) {
    return new Promise((resolve, reject) => {
      getInfo(state.token).then(response => {
        const { data } = response

        if (!data) {
          reject('Verification failed, please Login again.')
        }

        // 从后端反馈的data数据中解构出用户相关信息
        const { roles, name, avatar, introduction, id } = data

        // roles must be a non-empty array
        if (!roles || roles.length <= 0) {
          reject('getInfo: roles must be a non-null array!')
        }

        commit('SET_ROLES', roles)
        commit('SET_NAME', name)
        commit('SET_AVATAR', avatar)
        commit('SET_INTRODUCTION', introduction)
        commit('SET_USERUID', id)
        //将权限字段保存到sessionStorage中
        sessionStorage.setItem("codeList",JSON.stringify(roles));
        resolve(data)
      }).catch(error => {
        reject(error)
      })
    })
  },

  // user logout
  logout({ commit, state, dispatch }) {
    return new Promise((resolve, reject) => {
      logout(state.token).then(() => {
        commit('SET_TOKEN', '')
        commit('SET_ROLES', [])
        removeToken()
        resetRouter()

        // reset visited views and cached views
        // to fixed https://github.com/PanJiaChen/vue-element-admin/issues/2485
        dispatch('tagsView/delAllViews', null, { root: true })

        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // remove token
  resetToken({ commit }) {
    return new Promise(resolve => {
      commit('SET_TOKEN', '')
      commit('SET_ROLES', [])
      removeToken()
      resolve()
    })
  },

  // dynamically modify permissions
  async changeRoles({ commit, dispatch }, role) {
    const token = role + '-token'

    commit('SET_TOKEN', token)
    setToken(token)

    const { roles } = await dispatch('getInfo')

    resetRouter()

    // generate accessible routes map based on roles
    const accessRoutes = await dispatch('permission/generateRoutes', roles, { root: true })
    // dynamically add accessible routes
    router.addRoutes(accessRoutes)

    // reset visited views and cached views
    dispatch('tagsView/delAllViews', null, { root: true })
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}

3.2 编写刷新token新代码

3.3?编写token过期方法

import Cookies from 'js-cookie'

const TokenKey = 'Admin-Token'
//定义token过期时间的key
const timeKey = "expireTime"

export function getToken() {
  return Cookies.get(TokenKey)
}

export function setToken(token) {
  return Cookies.set(TokenKey, token)
}

export function removeToken() {
  return Cookies.remove(TokenKey)
}

/**
* 清空sessionStorage
*/
export function clearStorage(){
  return sessionStorage.clear();
}

/**
* 设置token过期时间
* @returns
*/
export function setTokenTime(time){
  return sessionStorage.setItem(timeKey,time);
}

/**
* 获取token过期时间
* @returns
*/
export function getTokenTime(){
  return sessionStorage.getItem(timeKey);
}

/**
* 清空token过期时间
* @returns
*/
export function removeTokenTime(){
  return sessionStorage.setItem(timeKey,0);
}

3.4?编写请求拦截

import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
// 导入auth.js脚步
import { getToken, setToken, clearStorage, setTokenTime, getTokenTime, removeTokenTime } from '@/utils/auth'
// 导入qs依赖（该依赖用于将参数进行序列化，如：/user?username=xxx&password=&&&）
import qs from 'qs'
//导入刷新token的api脚本
import { refreshToken } from '@/api/user'

// 创建axios异步请求实例
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 50000 // request timeout
})

/**
* 刷新token
*/
function refreshTokenInfo(){
  //设置请求参数
  let param = {
    token:getToken()
  }
  return refreshToken(param).then(res=>res);
}

//定义变量，标识是否刷新token
let isRefresh = false
// 请求拦截器
service.interceptors.request.use(
  config => {
    // 获取系统当前时间
    let currentTime = new Date().getTime()
    // 获取token过期时间
    let expireTime = getTokenTime()
    if (expireTime > 0){
      // 计算过期时间
      let min = (expireTime - currentTime)/1000/60
      // 如果token离过期时间在10分钟之内，则刷新token
      if (min < 10){
        if (!isRefresh){
          // 修改刷新状态
          isRefresh = true
          return refreshTokenInfo().then(res => {
            if (res.success){
              // 设置新的token和新的过期时间
              setToken(res.data.token)
              setTokenTime(res.data.expireTime)
              // 将新的token添加到页header中
              config.headers.token = getToken()
            }
            // 返回配置
            return config
          }).catch(error => {

          }).finally(() => {
            // 修改刷新token状态
            isRefresh = false
          })
        }
      }
    }
    // 判断store中是否存在token
    if (store.getters.token) {
      // 读取token信息，并添加到header信息中
      config.headers['token'] = getToken()
    }
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    // 清空sessionStorage
    clearStorage()
    // 清空token过期时间
    removeTokenTime()
    return Promise.reject(error)
  }
)

// 响应拦截器
service.interceptors.response.use(

  response => {
    const res = response.data

    // 返回状态码不是200,提示错误
    if (res.code !== 200) {
      Message({
        message: res.message || 'Error',
        type: 'error',
        duration: 5 * 1000
      })

      // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
      if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
        // to re-login
        MessageBox.confirm('用户登录信息过期，请重新登录！', '系统提示', {
          confirmButtonText: '登录',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/resetToken').then(() => {
            // 清空sessionStorage
            clearStorage()
            // 清空token过期时间
            removeTokenTime()
            location.reload()
          })
        })
      }
      return Promise.reject(new Error(res.message || 'Error'))
    } else {
      return res
    }
  },
  error => {
    console.log('err' + error) // for debug
    // 清空sessionStorage
    clearStorage()
    // 清空token过期时间
    removeTokenTime()
    Message({
      message: error.message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

//请求方法
const http = {
  // post请求提交
	post(url, params) {
		return service.post(url, params, {
			transformRequest: [(params) => {
				return JSON.stringify(params)
			}],
			headers: {
				'Content-Type': 'application/json'
			}
		})
	},
  // put请求
	put(url, params) {
		return service.put(url, params, {
			transformRequest: [(params) => {
				return JSON.stringify(params)
			}],
			headers: {
				'Content-Type': 'application/json'
			}
		})
	},
  // get请求
  get(url, params) {
		return service.get(url, {
			params: params,
			paramsSerializer: (params) => {
				return qs.stringify(params)
			}
		})
	},
  // rest风格的Get请求
  getRestApi(url, params) {
    let _params
    if (Object.is(params, undefined || null)) {
      _params = ''
    } else {
      _params = '/'
      for (const key in params) {
        //console.log(key)
        //console.log(params[key])
        if (params.hasOwnProperty(key) && params[key] !== null && params[key] !== '') {
          _params += `${params[key]}/`
        }
      }
      _params = _params.substr(0, _params.length - 1)
    }
    //console.log(_params)
    if (_params) {
      return service.get(`${url}${_params}`)
    } else {
      return service.get(url)
    }
  },
  // delete请求
  delete(url, params) {
    let _params
    if (Object.is(params, undefined || null)) {
      _params = ''
    } else {
      _params = '/'
      for (const key in params) {
        // eslint-disable-next-line no-prototype-builtins
        if (params.hasOwnProperty(key) && params[key] !== null && params[key] !== '') {
          _params += `${params[key]}/`
        }
      }
      _params = _params.substr(0, _params.length - 1)
    }
    if (_params) {
      return service.delete(`${url}${_params}`).catch(err => {
        message.error(err.msg)
        return Promise.reject(err)
      })
    } else {
      return service.delete(url).catch(err => {
        message.error(err.msg)
        return Promise.reject(err)
      })
    }
  },
  upload(url, params) {
		return service.post(url, params, {
			headers: {'Content-Type': 'multipart/form-data'}
		})
	},
  login(url, params) {
    return service.post(url, params, {
      transformRequest: [(params) => {
          return qs.stringify(params)
      }],
      headers: { 'Content-Type': 'application/x-www-form-urlencoded'}
    })
  }
}

export default http