# 系统实现

# 前端

# 树形组件

# 单选树形

<el-tree 
    :default-checked-keys="[postForm.parentUuid]"
    class="filter-tree"
    check-strictly
    show-checkbox
    highlight-current 
    :data="postForm.organTree" 
    node-key="organUuid" 
    :props="defaultProps" 
    @check="handleCheckChange" 
    default-expand-all
    :filter-node-method="filterNode"
    ref="tree"
/>

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组织选择，不带选中框

# 多选树形

<el-tree
  :data="data"
  show-checkbox
  node-key="id"
  :default-expanded-keys="[2, 3]"
  :default-checked-keys="[5]">
</el-tree>

<script>
  export default {
    data() {
      return {
        data: [{
          id: 1,
          label: '一级 2',
          children: [{
            id: 3,
            label: '二级 2-1',
            children: [{
              id: 4,
              label: '三级 3-1-1'
            }, {
              id: 5,
              label: '三级 3-1-2',
              disabled: true
            }]
          }, {
            id: 2,
            label: '二级 2-2',
            disabled: true,
            children: [{
              id: 6,
              label: '三级 3-2-1'
            }, {
              id: 7,
              label: '三级 3-2-2',
              disabled: true
            }]
          }]
        }],
        defaultProps: {
          children: 'children',
          label: 'label'
        }
      };
    }
  };
</script>

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菜单选择，带选择框，自动选中父级菜单

# 自动选中父级前端实现

~~导出：去层级化的所有选中项~~

~~选中一个，就按按菜单id 给角色添加菜单，然后刷新菜单树~~

# 如何处理带选择框树形控件的选择联动

被选中的所有父级会选中
所有子树选中

# 编辑/添加表单

编辑和添加表单内容十分相似，区别是呈现方式

故此抽象出5个xxxDetail 组件，通过isEdit 参数判定是添加还是编辑

用户编辑/添加	组织编辑/添加	角色编辑/添加	岗位编辑/添加	资源编辑/添加
userDetail	oragDetail	roleDetail	dutyDetail	resDetail

# userDetail代码示例

<template>
  <el-form ref="postForm"  :label-position="labelPosition" :model="postForm" :rules="rules">
    <sticky >
      <div :class="'sub-navbar '+postForm.status">
        <el-button v-if="!isEdit" @click="showGuide">显示帮助</el-button>
        <el-button
          v-loading="loading"
          @click="submitForm"
          type="success"
          style="margin-left: 10px;"
        >
          {{isEdit? '编辑用户':'新增用户'}}
         </el-button>
      </div>
    </sticky>
    <div class="detail-container">
      <el-row>
        <!-- <warning/> -->

        <el-col :span="24">
          <el-form-item prop="真实姓名" >
            <Mdinput v-model="postForm.niceName" :maxlength="100" name="niceName" required>
              <slot>真实姓名</slot>
            </Mdinput>
          </el-form-item>

          <el-row :gutter="20">
            <el-col :span="12">
              <el-form-item  label="用户名" prop="username" label-width="80px">
                <el-input prefix-icon="el-icon-user"  v-model="postForm.username" placeholder="用户名" clearable></el-input>
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item prop="password" label="密码: " label-width="80px">
                <el-input show-password prefix-icon="el-icon-key" v-model="postForm.password"  placeholder="密码"></el-input>
              </el-form-item>
            </el-col>
          </el-row>
          <el-row :gutter="20">
            <el-col :span="12">
              <el-form-item label="邮箱：" prop="email" label-width="80px">
                <el-input prefix-icon="el-icon-message"  v-model="postForm.email" placeholder="邮箱" clearable></el-input>
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item prop="mobile" label="手机号: " label-width="80px">
                <el-input prefix-icon="el-icon-mobile-phone" v-model="postForm.mobile" placeholder="手机号" clearable></el-input>
              </el-form-item>
            </el-col>
          </el-row>
          <el-row :gutter="20">
            <el-col :span="12">
              <el-form-item label="是否可用：" prop="status" label-width="100px">
                <el-switch v-model="postForm.status" ></el-switch>
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item prop="remark" label="备注: " label-width="80px">
                <el-input type="textarea"  v-model="postForm.remark" placeholder="备注" ></el-input>
              </el-form-item>
            </el-col>
          </el-row>
          <el-row :gutter="20">
            <el-col :span="12">
              <el-form-item label="过滤" label-width="80px">
                <el-input
                  placeholder="输入关键字进行过滤"
                  v-model="filterText">
                </el-input>
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item prop="organUuid" label="组织: " label-width="80px">
                <el-input disabled v-model="postForm.organName" placeholder="组织"></el-input>
              </el-form-item>
            </el-col>
          </el-row>
         
          <el-row :gutter="20" >
            <el-col :span="12">

                <el-card class="box-card">
                  <div slot="header" class="clearfix">
                    <span>组织树：</span>
                    <!-- <el-button style="float: right; padding: 3px 0" type="text">操作按钮</el-button> -->
                  </div>
                <el-form-item >
                  <div
                    v-if="postForm.organTree && postForm.organTree.length > 0"
                    class="contents-wrapper"
                  >
                    <el-tree 
                      :default-checked-keys="defaultSelected"
                      class="filter-tree"
                      check-strictly
                      show-checkbox
                      highlight-current 
                      :data="postForm.organTree" 
                      node-key="organUuid" 
                      :props="defaultProps" 
                      default-expand-all
                      @check="handleCheckChange" 
                      :filter-node-method="filterNode"
                      ref="tree"
                    />
                  </div>
                <span v-else>无</span>
              </el-form-item>
                </el-card>

            </el-col>
            <el-col :span="12">
              <el-form-item prop="dutyUuid" label="岗位: " label-width="80px">
                <el-select 
                  v-model="postForm.dutyUuid" 
                  placeholder="岗位" 
                  clearable 
                  class="filter-item"
                >
                  <el-option 
                    :key="item.dutyid" 
                    v-for=" item in dutyList" 
                    :value="item.dutyid" 
                    :label="item.name"
                  >
                  </el-option>
                </el-select>
              </el-form-item>
            </el-col>
          </el-row>
        </el-col>
      </el-row>
    </div>
  </el-form>
</template>

<script>
  import { createUser ,getUser,updateUser} from '../../../api/ptuser.js'
  import { getDutyByOrganId} from '../../../api/duty.js'
  import { queryOrgan} from '../../../api/organ.js'
  import { listRoleAll} from '../../../api/role.js'
  import Mdinput from '../../../components/MDinput/index.vue'
  import EbookUpload from '@/components/EbookUpload/index.vue'
  import Sticky from '@/components/Sticky'
  import Warning from './Warning.vue'

  //to do 将baseUrl 改成全局
 const baseUrl='http://localhost:8082'

const fields={
  name:'用户名',
}
 const defaultForm={
   userUuid:'',
   niceName:'',//真实姓名
   username:'', //  用户名
   password:'',//密码
   email:'',//邮箱
   mobile:'',//手机号
   status:'',//是否可用
   remark:'',//备注
   organUuid:'',//  组织id
   organName:'',//  组织名称
   dutyUuid:'',//  岗位id
   organTree: [] //  组织树
 }
  export default{
    components:{
      Sticky,
      Warning,
      EbookUpload,
      Mdinput
    },
    props:{
      isEdit:Boolean
    },
    watch: {
      filterText(val) {
        this.$refs.tree.filter(val);
      },
      organUuid(){
        if(this.organUuid){
          this.getDutyList()
        }
      }
    },
    computed:{
      organUuid(){
        return this.postForm.organUuid
      }
    },
    data() {
      const validateRequire = (rule,value,callback)=>{
        if (value==null||value.length===0){
          callback(new Error(fields[rule.field] + '必须填写'))
        }else{
          callback()
        }
      }
      return{
        firstTime:true,
        defaultSelected:[],
        dutyList:[],
        filterText:'',
        loading:false,
        defaultProps: {
        children: 'children',
        label: 'organName'
        },
        postForm:{
          userUuid:'',
          niceName:'',//真实姓名
          username:'', //  用户名
          password:'',//密码
          email:'',//邮箱
          mobile:'',//手机号
          status:'',//是否可用
          remark:'',//备注
          organUuid:'',//  组织id
          organName:'',//  组织名称
          dutyUuid:'',//  岗位id
          organTree: [] //  组织树
        },
        labelPosition:'left',
        rules:{
          name:[{validator:validateRequire}],
          mobile: 
          [
            { required: true, message: "请输入手机号", trigger: "blur" },
            // 这个只能验证手机号
            // { pattern:/^0{0,1}(13[0-9]|15[7-9]|153|156|18[7-9])[0-9]{8}$/, message: "请输入合法手机号", trigger: "blur" }
            { pattern:/^((0\d{2,3}-\d{7,8})|(1[3584]\d{9}))$/, message: "请输入合法手机号/电话号", trigger: "blur" }
          ],
          idNumber: 
          [
            { required: true, message: "请输入身份证号", trigger: "blur" },
            { pattern:/(^[1-9]\d{5}(18|19|([23]\d))\d{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$)|(^[1-9]\d{5}\d{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)\d{2}$)/, message: "请输入合法身份证号", trigger: "blur"}
          ],
          email: 
          [
            { required: true, message: "请输入邮箱", trigger: "blur" },
            { pattern:/^([0-9A-Za-z\-_\.]+)@([0-9a-z]+\.[a-z]{2,3}(\.[a-z]{2})?)$/g, message: "请输入正确的邮箱", trigger: "blur"}
          ],
          password:
          [
            {required:true,message: "请输入密码",trigger:"blur"},
            {pattern:/^(?![0-9]+$)(?![a-zA-Z]+$)[0-9A-Za-z]{6,18}$/,message:"密码须包含数字、字母两种元素，且密码位数为6-16位"}
          ]
        }
      }
    },
    created( ){
      // this. getDutyList()
      this.getOrganTree()
      if(this.isEdit){
        console.log('编辑')
        const userId=this.$route.params.userId
        this.postForm.userUuid=userId
        console.log(userId)
        this. getUserDate(userId)
      }
      

    },
    methods:{
       getDutyList(){
        if(!this.firstTime){
          this.postForm.dutyUuid=''
        }else{
          this.firstTime=false
        }

        let organId=this.postForm.organUuid
        getDutyByOrganId(organId).then(res=>{
          this.dutyList=res.data
        })
      },
       getUserDate(userId){
        getUser(userId).then(res=>{
          this.setData(res.data)
          const selectedOrgan=res.data.organUuid
          if(selectedOrgan!=null){
             this.defaultSelected.push(selectedOrgan)
          }
        })
      },
      getOrganTree(){
        queryOrgan().then(res=>{
          const organTree=[res.data]
          const postForm={
            ...this.postForm,
            organTree
          }
          this.postForm=Object.assign({}, this.postForm, postForm)
        })
      },
      filterNode(value, data) {
        if (!value) return true;
        return data.organName.indexOf(value) !== -1;
      },
       showGuide (){
         console.log("guide")
       },
       submitForm (){
          const onSuccess=(res)=>{
              const {msg}=res;
              this.$notify({
              title: '操作成功',
              message: msg,
              type:'success',
              duration:2000
              })
              this.getOrganTree()
              this.loading=false
          }
          console.log(this.postForm)

         if(!this.loading){
          this.loading=true
          this.$refs.postForm.validate((valid,fields) => {
            console.log(valid)
            if(valid){
              console.log("vaild success")

              if(this.isEdit){
                updateUser(this.postForm).then(res =>{
                onSuccess(res)
                })
              }else{
                console.log(this.postForm)
                createUser(this.postForm).then(res =>{
                onSuccess(res)
              })
              }
              this.loading=false
            }else{
              const message=fields[Object.keys(fields)[0]][0].message
              console.log(message)
              this.$message({
                message:message,
                type:'error'
              })
              this.loading=false
            }
          })
         }  
       },
       setData (data){
         const{
          userUuid,
          niceName ,//真实姓名
          username , //  用户名
          password ,//密码
          email ,//邮箱
          mobile ,//手机号
          status ,//是否可用
          remark ,//备注
          organUuid ,//  组织id
          dutyUuid ,//  岗位id
         }=data

         this.postForm={
           ...this.postForm,
          userUuid,
          niceName ,//真实姓名
          username , //  用户名
          password ,//密码
          email ,//邮箱
          mobile ,//手机号
          status ,//是否可用
          remark ,//备注
          organUuid ,//  组织id
          dutyUuid ,//  岗位id
         }
       },
       toDefault(){
         this.postForm=Object.assign({},defaultForm)
         this.fileList=[]
       },
      handleCheckChange (data, checked, indeterminate) {
        if (checked) {
          let arr = [data.organUuid];
          this.postForm.organUuid=arr[0]
          this.postForm.organName=data.organName
          this.$refs.tree.setCheckedKeys(arr);
        }else{
          this.$refs.tree.setCheckedKeys([]);
          this.postForm.organUuid=''
          this.postForm.organName=''
        }
      },
    }
  }
</script>

<style lang="scss">
    @import "~@/styles/mixin.scss";
  .detail-container{
    padding: 40px 50px 20px;

    .preview-img {
      width: 200px;
      height: 270px;
    }

    .contents-wrapper {
      margin: 10px 60px;

    }
  }
</style>

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# 后端

# 菜单的查询

由于组织树和菜单树十分类似，这里以菜单

# mybatis 递归查询

举例selectPtResForestByParentUUIDAndRoleUuid

  <resultMap id="BaseResultMapWithChildrenAndRoleUuid" type="com.simo.meitan.model.PtMenu">
    <id column="menu_uuid" jdbcType="VARCHAR" property="menuUuid" />
    <result column="parent_uuid" jdbcType="VARCHAR" property="parentUuid" />
    <result column="sub_count" jdbcType="INTEGER" property="subCount" />
    <result column="type" jdbcType="INTEGER" property="type" />
    <result column="name" jdbcType="VARCHAR" property="name" />
    <result column="component" jdbcType="VARCHAR" property="component" />
    <result column="menu_sort" jdbcType="INTEGER" property="menuSort" />
    <result column="path" jdbcType="VARCHAR" property="path" />
    <result column="i_frame" jdbcType="BIT" property="iFrame" />
    <result column="hidden" jdbcType="BIT" property="hidden" />
    <result column="permission" jdbcType="VARCHAR" property="permission" />
    <result column="create_by" jdbcType="VARCHAR" property="createBy" />
    <result column="update_by" jdbcType="VARCHAR" property="updateBy" />
    <result column="create_time" jdbcType="TIMESTAMP" property="createTime" />
    <result column="update_time" jdbcType="TIMESTAMP" property="updateTime" />
    <result column="title" jdbcType="VARCHAR" property="title"/>
    <result column="icon" jdbcType="VARCHAR" property="icon"/>
    <association property="meta" javaType="com.simo.meitan.model.MenuMeta">
      <result column="title" jdbcType="VARCHAR" property="title"/>
      <result column="icon" jdbcType="VARCHAR" property="icon"/>
    </association>
    <collection property="children" ofType="com.simo.meitan.model.PtMenu" select="com.simo.meitan.mapper.PtMenuMapper.selectPtResForestByParentUUIDAndRoleUuid"
                column="{parentUuid=menu_uuid,roleUuid=role_uuid}">

    </collection>
  </resultMap>

 <select id="selectPtResForestByParentUUIDAndRoleUuid" resultMap="BaseResultMapWithChildrenAndRoleUuid">
    select
    pt_menu.menu_uuid, parent_uuid, sub_count, `type`, title, `name`, component, menu_sort, icon,
    `path`, i_frame, `cache`, hidden, permission, create_by, update_by, create_time,
    update_time,map.role_uuid
    from pt_roles_menus as map,pt_menu
    where parent_uuid=#{parentUuid,jdbcType=VARCHAR}
    and map.role_uuid=#{roleUuid,jdbcType=VARCHAR}
    and map.menu_uuid=pt_menu.menu_uuid
    and pt_menu.type=0
  </select>

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# 按角色查询已选中的菜单返回前端

# 解决方案一（二次查询）

先查询完整的菜单树
按角色查询已选项目（列表）
遍历菜单树，每个菜单节点都在角色菜单里查询，已此来确定是否选中

# 解决方案二 ✔️

数据库查询完整的菜单树
查询角色绑定的菜单列表

我们项目采用方案二，数据结构大概如下

resTress 树形目标菜单

selectedRes 已选中菜单阶id （一一对应）


menuTress: [{id: 1, path: null, component: null, name: "所有", iconCls: null,…}]
selectedMenus: [7, 13, 15]

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# 菜单节点的删除

我们要明白，删除是比较危险的操作，特别是对于在数据的树型数据而言

# 对于删除操作的限制

非页节点不可删除

为了代码逻辑清晰，我们把菜单的删除操作，写成一个数据库存储过程

# 删除菜单数据库存储过程

CREATE DEFINER=`simo`@`%` PROCEDURE `deleteMenu`(IN did char(255),OUT recode int)
BEGIN
  DECLARE ecount int;
	DECLARE puuid char(255);
	DECLARE ccount int;
	set recode=0;
	SELECT COUNT(*) INTO ccount from pt_menu WHERE parent_uuid=did;
	IF ccount=0 THEN
		DELETE FROM pt_menu WHERE menu_uuid=did;
		SELECT ROW_COUNT() INTO recode;
	END IF;
END

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