基于Springboot的角色用户菜单权限系统

假设我们要做一个学校的管理系统，要求不同的角色用户登录进去所看到的内容是不同的，例如校长和门卫登录进去所看到的菜单页面是不同的。校长可以看到全校的摄像头，而门卫看到的摄像头个数则是有限制的。那么如何来实现呢？

首先来分析需要些什么：
1.用户表 user
2.角色表 role
3.菜单表 menu
4.摄像头表 camera
5.用户角色表 roleUser
6.用户菜单表 roleMenu
7.用户摄像头表 roleCamera

以下截图仅供举例参考

user表字段 菜单表字段
菜单表数据库数据
摄像头表字段
摄像头表数据库数据 用户角色关联表
用户菜单关联表
用户摄像头关联表

关于表的数据就是这些了，里面的字段根据自己的项目需求添加。
前台的整个执行流程是什么呢？

操作者点击添加用户（这个用户是可以登录平台的） 点击添加用户
填写资料之后保存
点击保存之后

form表单提交到后台将数据添加到用户表（user）中，这个基本的增删改查不多说了，很简单。
然后写一个角色管理页面，可以配置角色。

角色管理页面

点击 添加角色

添加角色编辑页面

点击保存，将数据存入role（角色表）基础的增删改查不多说

role.png
点击分配用户
image.png
之前添加的两个用户展现出来，如果选择用户点击保存，则后台将用户的userId和这个角色的roleId保存到roleUser表中

同理，分配菜单和摄像头都是这个流程。

那么，如果菜单分配好了，假设，我给“最高管理者”这个角色分配了四个菜单，“次管理者”这个角色分配了两个菜单，将用户“校长”分配给“最高管理者”这个角色。也就是说，校长这个用户登录进入这个平台的时候应该只能看见四个菜单。
新建一个控制器：platformController

package com.lencity.securitymanagementplatform.controller;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

import com.alibaba.fastjson.JSONObject;
import com.lencity.securitymanagementplatform.data.entity.Camera;
import com.lencity.securitymanagementplatform.data.entity.Menu;
import com.lencity.securitymanagementplatform.data.entity.Role;
import com.lencity.securitymanagementplatform.data.entity.RoleMenu;
import com.lencity.securitymanagementplatform.data.entity.RoleUser;
import com.lencity.securitymanagementplatform.data.entity.User;
import com.lencity.securitymanagementplatform.data.service.MenuService;
import com.lencity.securitymanagementplatform.data.service.RoleMenuService;
import com.lencity.securitymanagementplatform.data.service.RoleUserService;
import com.lencity.securitymanagementplatform.data.service.UserService;

@Controller
@Scope("session")
@RequestMapping("")
public class PlatformController {

   @Autowired
   private UserService userService;
   
   @Autowired
   private RoleUserService roleUserService;
   
   @Autowired
   private RoleMenuService roleMenuService;
   
   @Autowired
   private MenuService menuService;
   

   @GetMapping("/")
   public String index() {
       return "forward:/login.html";
   }

   @PostMapping(value = "/login", produces = "application/json;charset=utf-8")
   @ResponseBody
   public String login(String name, String password, HttpSession session) {
       User user = userService.login(name, password);
       if (user == null) {
           session.removeAttribute("loginUser");
           return "0";
       }
           session.setAttribute("loginUser", user);
           return "1";
       
   }

   @RequestMapping(value = "/logout", produces = "application/json;charset=utf-8")
   @ResponseBody
   public String logout(HttpSession session) {
       session.removeAttribute("user");
       return "1";
   }

   @RequestMapping(value = "/changePassword", produces = "application/json;charset=utf-8")
   @ResponseBody
   public String changePassword(String oldPassword, String newPassword, HttpSession session) {
       User user = (User) session.getAttribute("user");
       boolean result = userService.changePassword(user.getName(), oldPassword, newPassword);
       return result ? "1" : "0";
   }
   
}

JS

function login() {
    $("#form").ajaxSubmit({
        type : 'POST',
        cache : false,
        success : function(result) {
            if (result == "0") {
                alert("帐号或密码错误，请重新输入！");
            } else {
                location.href = "user";
            }
        }
    });
}

接下来就是拦截器

platformInterceptor

package com.lencity.securitymanagementplatform.interceptor;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import com.lencity.securitymanagementplatform.data.entity.Menu;
import com.lencity.securitymanagementplatform.data.entity.RoleMenu;
import com.lencity.securitymanagementplatform.data.entity.RoleUser;
import com.lencity.securitymanagementplatform.data.entity.User;
import com.lencity.securitymanagementplatform.data.service.MenuService;
import com.lencity.securitymanagementplatform.data.service.ModuleService;
import com.lencity.securitymanagementplatform.data.service.RoleMenuService;
import com.lencity.securitymanagementplatform.data.service.RoleUserService;

@Component
public class PlatformInterceptor implements HandlerInterceptor {

  @Autowired
  private ModuleService moduleService;
  
  @Autowired
  private RoleMenuService roleMenuService;
  
  @Autowired
  private RoleUserService roleUserService;
  
  @Autowired
  private MenuService menuService;

  @Override
  public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
          throws Exception {
      HttpSession session = request.getSession();
      if (session.getAttribute("moduleMenus") == null) {
          session.setAttribute("moduleMenus", moduleService.getModuleMenus());
      }
      User user = (User) session.getAttribute("loginUser");
      if (user != null) {
          RoleUser roleUser = roleUserService.getUserByUserId(user.getId());
          List<RoleMenu> roleMenus = roleMenuService.getRoleMenuByRoleId(roleUser.getRoleId());
          List<Menu> menus=new ArrayList<>();
          for (RoleMenu roleMenu : roleMenus) {
              Menu menu = menuService.getMenuById(roleMenu.getMenuId());
              menus.add(menu);
          }
          if (session.getAttribute("indexMenus") == null) {
              session.setAttribute("indexMenus", menus);
          }
          return true;
      } else {
          //response.sendRedirect(request.getContextPath());
          redirect(request, response);
          return false;
      }
  }
  // 对于请求是ajax请求重定向问题的处理方法
      public void redirect(HttpServletRequest request, HttpServletResponse response) {
          // 获取当前请求的路径
          String basePath = request.getContextPath();
          // 如果request.getHeader("X-Requested-With") 返回的是"XMLHttpRequest"说明就是ajax请求，需要特殊处理
          // 否则直接重定向就可以了
          if ("XMLHttpRequest".equals(request.getHeader("X-Requested-With"))) {
              // 告诉ajax我是重定向
              response.setHeader("REDIRECT", "REDIRECT");
              // 告诉ajax我重定向的路径
              response.setHeader("CONTENTPATH", basePath + "/");
              response.setStatus(HttpServletResponse.SC_FORBIDDEN);
          } else {
              try {
                  response.sendRedirect(basePath + "/");
              } catch (IOException e) {
                  e.printStackTrace();
              }
          }
      }

}

image.png

package com.lencity.securitymanagementplatform;

import java.util.ArrayList;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import com.lencity.securitymanagementplatform.interceptor.ModuleInterceptor;
import com.lencity.securitymanagementplatform.interceptor.PlatformInterceptor;

@Configuration
public class PlatformWebConfiguration implements WebMvcConfigurer {

  @Autowired
  private PlatformInterceptor platformInterceptor;
  @Autowired
  private ModuleInterceptor moduleInterceptor;

  @Override
  public void addInterceptors(InterceptorRegistry registry) {
      List<String> platformExcludePathes = new ArrayList<>();
      platformExcludePathes.add("/moduleInterface/**");
      platformExcludePathes.add("/");
      platformExcludePathes.add("/platform/**");
      platformExcludePathes.add("/login.html");
      platformExcludePathes.add("/login");
      platformExcludePathes.add("/publicData/**");
      platformExcludePathes.add("/library/**");
      platformExcludePathes.add("/data/**");
      platformExcludePathes.add("/image/**");
      platformExcludePathes.add("/js/**");
      platformExcludePathes.add("/*.txt");
      registry.addInterceptor(platformInterceptor).addPathPatterns("/**").excludePathPatterns(platformExcludePathes);
      registry.addInterceptor(moduleInterceptor).addPathPatterns("/moduleInterface/**");
      WebMvcConfigurer.super.addInterceptors(registry);
  }

}

通过拦截器，userId去查询roleId，然后通过roleId去查询roleMenu 的菜单id
，最后通过菜单id去查询菜单表。存入session中。

menu.html

<section>
    <!-- Left Sidebar -->
    <aside id="leftsidebar" class="sidebar">
        <!-- User Info -->
        <div class="user-info">
        </div>
        <div class="menu">
            <ul class="list">
                  <#list indexMenus as menu>
                   <li <#if page=="${menu.menuUrl}">class="active"</#if>>
                            <a href="${request.contextPath}/${menu.menuUrl}">
                                <i class="material-icons">${menu.menuLogo}</i>
                                <span>${menu.menuLabel}</span>
                            </a>
                  </li>
                </#list>
                <li <#if page=="module">class="active"</#if>>
                    <a class="menu-toggle">
                        <i class="material-icons">apps</i>
                        <span>平台模块</span>
                    </a>
                    <ul class="ml-menu">
                        <li >
                            <a href="${request.contextPath}/module">模块管理</a>
                        </li>
                        <#list moduleMenus as moduleMenu>
                        <li>
                            <a href="${request.contextPath}/module/page?pageUrl=${moduleMenu.configMenu.menuUrl}">${moduleMenu.configMenu.menuLabel}</a>
                        </li>
                        </#list>
                   </ul>
                </li>
                <li>
                    <a href="javascript:void(0);" class="menu-toggle">
                        <i class="material-icons">apps</i>
                        <span>模块事件记录</span>
                    </a>
                    <ul class="ml-menu">
                        <#list moduleMenus as moduleMenu>
                        <li>
                            <a class="menu-toggle">${moduleMenu.moduleName}</a>
                            <ul class="ml-menu">
                                <#list moduleMenu.recordMenus as recordMenu>
                                <li>
                                    <a href="${recordMenu.menuUrl}">${recordMenu.menuLabel}</a>
                                </li>
                                </#list>
                           </ul>
                        </li>
                        </#list>
                   </ul>
                </li>
                <li>
                    <a href="javascript:void(0);" class="menu-toggle">
                        <i class="material-icons">apps</i>
                        <span>模块数据报表</span>
                    </a>
                    <ul class="ml-menu">
                        <#list moduleMenus as moduleMenu>
                        <li>
                            <a class="menu-toggle">${moduleMenu.moduleName}</a>
                            <ul class="ml-menu">
                                <#list moduleMenu.reportMenus as reportMenu>
                                <li class="active">
                                    <a href="${reportMenu.menuUrl}">${reportMenu.menuLabel}</a>
                                </li>
                                </#list>
                           </ul>
                        </li>
                        </#list>
                    </ul>
                </li>
            </ul>
        </div>
        <!-- #Menu -->
        <!-- Footer -->
        <div class="legal">
            <div class="copyright">
                &copy; 2018 - 2019 XXXX信息科技有限公司.
            </div>
            <div class="version">
                <b>Version: </b> 0.1
            </div>
        </div>
        <!-- #Footer -->
    </aside>
    <!-- #END# Right Sidebar -->
</section>
 <div class="modal fade" id="changePasswordDialog" tabindex="-1"
        role="dialog">
        <div class="modal-dialog" role="document"
            style="margin-top: 10%; width: 480px;">
            <div class="modal-content">
                <div class="card">
                    <div class="header">
                        <h2>修改密码</h2>
                    </div>
                    <div class="body">
                        <div class="content clearfix">
                            <form class="form-horizontal" id="changePasswordForm" action="${request.contextPath}/changePassword" method="post">
                            <div class="row clearfix">
                                <div class="col-lg-3 col-md-3 col-sm-3 col-xs-3 form-control-label">
                                    <label for="email_address_2">原密码：</label>
                                </div>
                                <div class="col-lg-9 col-md-9 col-sm-9 col-xs-9">
                                    <div class="form-group">
                                        <div class="form-line">
                                            <input type="password" name="oldPassword" class="form-control" placeholder="请输入原密码" minlength="6" maxlength="20"> 
                                        </div>
                                    </div>
                                </div>
                            </div>
                            <div class="row clearfix">
                                <div class="col-lg-3 col-md-3 col-sm-3 col-xs-3 form-control-label">
                                    <label for="email_address_2">新密码：</label>
                                </div>
                                <div class="col-lg-9 col-md-9 col-sm-9 col-xs-9">
                                    <div class="form-group">
                                        <div class="form-line">
                                            <input type="password" id="newPassword" name="newPassword" class="form-control" placeholder="请输入6位以上20位以内的密码" minlength="6" maxlength="20"> 
                                        </div>
                                    </div>
                                </div>
                            </div>
                            <div class="row clearfix">
                                <div class="col-lg-3 col-md-3 col-sm-3 col-xs-3 form-control-label">
                                    <label for="email_address_2">确认新密码：</label>
                                </div>
                                <div class="col-lg-9 col-md-9 col-sm-9 col-xs-9">
                                    <div class="form-group">
                                        <div class="form-line">
                                            <input type="password" name="confirmPassword" class="form-control" placeholder="请确认密码" minlength="6" maxlength="20"> 
                                        </div>
                                    </div>
                                </div>
                            </div>
                            
                             <div class="row clearfix">
                                   <div class="col-lg-offset-4 col-md-offset-4 col-sm-offset-4 col-xs-offset-4">
                                    <button type="button" class="btn btn-primary waves-effect m-t-15 btn-lg" style="width:120px;" onclick="changePassword()">
                                        <i class="material-icons">save</i>
                                        <span>保存</span>
                                    </button>
                                    
                                    <button type="button" class="btn btn-default waves-effect btn-lg header-dropdown m-l-15 m-t-15" onclick="closeChangePasswordDialog()">
                                        <i class="material-icons">cancel</i>
                                        <span>取消</span>
                                    </button>
                                   </div>
                               </div>
                            </form>
                        </div>
                    </div>
                </div>
            </div>
        </div>
</div>
 

<script>
var Menuvalidate;
    function showChangePassword() {
        $("#changePasswordDialog").modal({
            show : true,
            backdrop : "static"
        });
    }
    
    function closeChangePasswordDialog(){
        $('#changePasswordDialog').modal('hide');
    }
    
    
    
    $(function() {
        Menuvalidate = $('#changePasswordForm').validate({
            rules : {
                'oldPassword' : {
                    required : true
                },
                'newPassword' : {
                    required : true
                },
                'confirmPassword' : {
                    required : true,
                    equalTo : "#newPassword"
                }
            },
            highlight : function(input) {
                $(input).parents('.form-line').addClass('error');
            },
            unhighlight : function(input) {
                $(input).parents('.form-line').removeClass('error');
            },
            errorPlacement : function(error, element) {
                $(element).parents('.form-group').append(error);
            }
        });
        $.validator.addMethod('newPassword', function(value, element) {
            return value.match(/^(?![0-9]+$)(?![a-zA-Z]+$)[0-9A-Za-z]{6,20}$/);
        }, '请输入6位以上20位以内数字+字母组合的密码');
    });
    
    
    
    function changePassword() {
         $("#changePasswordForm").ajaxSubmit({
                beforeSubmit: function() {
                    return Menuvalidate.form();
                    },
                success: function(result) { 
                    if(result==1){
                        closeChangePasswordDialog();
                        swal({
                            title: "提示",
                            text: "<span style='color:#40831C;font-size:30px;'>修改成功！</span>",
                            type: "success",
                            timer: 2000,
                            showConfirmButton: false,
                            html: true
                      });
                        setInterval(() => {
                            $(window).attr('location',contextPath);
                        }, 2000);
                    }else{
                        swal({
                            title: "原密码错误",
                            text: "<span style='color:red;font-size:30px;'>修改失败！</span>",
                            type: "error",
                            timer: 2000,
                            showConfirmButton: false,
                            html: true
                      });
                    }
                },
                complete : function(xhr, status){
                    forwardToLogin(xhr, status);
                }
         });
    }
    function logout() {
        swal({
            title: "确定退出登录?",
            type: "warning",
            showCancelButton: true,
            confirmButtonColor: "#2196F3",
            confirmButtonText: "确定",
            cancelButtonText: "取消",
            closeOnConfirm: false,
            html: true
        },
        function(isConfirm){
            if(isConfirm){
                $.ajax({
                    url: contextPath + "/logout",
                    cache : false,
                    success : function(result) {
                        $(window).attr('location',contextPath);
                    },
                    complete : function(xhr, status){
                        forwardToLogin(xhr, status);
                    }
                });             
            }
        });
    }
</script>

循环遍历session中的menus，展现如下效果

菜单.png

Over~