手把手教你实现Java权限管理系统前端篇（十四）：菜单功能实现

Posted 2021-01-07 朝雨忆轻尘

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菜单功能实现

菜单接口封装

菜单管理是一个对菜单树结构的增删改查操作。

提供一个菜单查询接口，查询整颗菜单树形结构。

http/modules/menu.js 添加 findMenuTree 接口。

import axios from \'../axios\'

/* 
 * 菜单管理模块
 */

 // 保存
export const save = (data) => {
    return axios({
        url: \'/menu/save\',
        method: \'post\',
        data
    })
}
// 删除
export const batchDelete = (data) => {
    return axios({
        url: \'/menu/delete\',
        method: \'post\',
        data
    })
}
// 查找导航菜单树
export const findNavTree = (params) => {
    return axios({
        url: \'/menu/findNavTree\',
        method: \'get\',
        params
    })
}
// 查找导航菜单树
export const findMenuTree = () => {
    return axios({
        url: \'/menu/findMenuTree\',
        method: \'get\'
    })
}

菜单管理界面

菜单管理界面是使用封装的表格树组件显示菜单结构，并提供增删改查的功能。

Menu.vue

<template>
  <div class="container" style="width:99%;margin-top:-25px;">
    <!--工具栏-->
    <div class="toolbar" style="float:left;padding-top:10px;padding-left:15px;">
        <el-form :inline="true" :model="filters" :size="size">
            <el-form-item>
                <el-input v-model="filters.name" placeholder="名称"></el-input>
            </el-form-item>
            <el-form-item>
                <kt-button label="查询" perms="sys:menu:view" type="primary" @click="findTreeData(null)"/>
            </el-form-item>
            <el-form-item>
                <kt-button label="新增" perms="sys:menu:add" type="primary" @click="handleAdd"/>
            </el-form-item>
        </el-form>
    </div>
    <!--表格树内容栏-->
    <el-table :data="tableTreeDdata" stripe size="mini" style="width: 100%;"
      v-loading="loading" element-loading-text="拼命加载中">
      <el-table-column
        prop="id" header-align="center" align="center" width="80" label="ID">
      </el-table-column>
      <table-tree-column 
        prop="name" header-align="center" treeKey="id" width="150" label="名称">
      </table-tree-column>
      <el-table-column header-align="center" align="center" label="图标">
        <template slot-scope="scope">
          <i :class="scope.row.icon || \'\'"></i>
        </template>
      </el-table-column>
      <el-table-column prop="type" header-align="center" align="center" label="类型">
        <template slot-scope="scope">
          <el-tag v-if="scope.row.type === 0" size="small">目录</el-tag>
          <el-tag v-else-if="scope.row.type === 1" size="small" type="success">菜单</el-tag>
          <el-tag v-else-if="scope.row.type === 2" size="small" type="info">按钮</el-tag>
        </template>
      </el-table-column>
      <el-table-column 
        prop="parentName" header-align="center" align="center" width="120" label="上级菜单">
      </el-table-column>
      <el-table-column
        prop="url" header-align="center" align="center" width="150" 
        :show-overflow-tooltip="true" label="菜单URL">
      </el-table-column>
      <el-table-column
        prop="perms" header-align="center" align="center" width="150" 
        :show-overflow-tooltip="true" label="授权标识">
      </el-table-column>
      <el-table-column
        prop="orderNum" header-align="center" align="center" label="排序">
      </el-table-column>
      <el-table-column
        fixed="right" header-align="center" align="center" width="150" label="操作">
        <template slot-scope="scope">
          <kt-button label="修改" perms="sys:menu:edit" @click="handleEdit(scope.row)"/>
          <kt-button label="删除" perms="sys:menu:delete" type="danger" @click="handleDelete(scope.row)"/>
        </template>
      </el-table-column>
    </el-table>
    <!-- 新增修改界面 -->
    <el-dialog :title="!dataForm.id ? \'新增\' : \'修改\'" width="40%" :visible.sync="dialogVisible" :close-on-click-modal="false">
      <el-form :model="dataForm" :rules="dataRule" ref="dataForm" @keyup.enter.native="submitForm()" 
        label-width="80px" :size="size" style="text-align:left;">
        <el-form-item label="菜单类型" prop="type">
          <el-radio-group v-model="dataForm.type">
            <el-radio v-for="(type, index) in menuTypeList" :label="index" :key="index">{{ type }}</el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item :label="menuTypeList[dataForm.type] + \'名称\'" prop="name">
          <el-input v-model="dataForm.name" :placeholder="menuTypeList[dataForm.type] + \'名称\'"></el-input>
        </el-form-item>
        <el-form-item label="上级菜单" prop="parentName">
            <popup-tree-input 
              :data="popupTreeData" :props="popupTreeProps" :prop="dataForm.parentName==null?\'根节点\':dataForm.parentName" 
              :nodeKey="\'\'+dataForm.parentId" :currentChangeHandle="handleTreeSelectChange">
            </popup-tree-input>
        </el-form-item>
        <el-form-item v-if="dataForm.type === 1" label="菜单路由" prop="url">
          <el-input v-model="dataForm.url" placeholder="菜单路由"></el-input>
        </el-form-item>
        <el-form-item v-if="dataForm.type !== 0" label="授权标识" prop="perms">
          <el-input v-model="dataForm.perms" placeholder="如: sys:user:add, sys:user:edit, sys:user:delete"></el-input>
        </el-form-item>
        <el-form-item v-if="dataForm.type !== 2" label="排序编号" prop="orderNum">
          <el-input-number v-model="dataForm.orderNum" controls-position="right" :min="0" label="排序编号"></el-input-number>
        </el-form-item>
        <el-form-item v-if="dataForm.type !== 2" label="菜单图标" prop="icon">
          <el-row>
            <el-col :span="22">
              <!-- <el-popover
                ref="iconListPopover"
                placement="bottom-start"
                trigger="click"
                popper-class="mod-menu__icon-popover">
                <div class="mod-menu__icon-list">
                  <el-button
                    v-for="(item, index) in dataForm.iconList"
                    :key="index"
                    @click="iconActiveHandle(item)"
                    :class="{ \'is-active\': item === dataForm.icon }">
                    <icon-svg :name="item"></icon-svg>
                  </el-button>
                </div>
              </el-popover> -->
              <el-input v-model="dataForm.icon" v-popover:iconListPopover :readonly="true" placeholder="菜单图标名称（如：fa fa-home fa-lg）" class="icon-list__input"></el-input>
            </el-col>
            <el-col :span="2" class="icon-list__tips">
              <fa-icon-tooltip />
            </el-col>
          </el-row>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button :size="size"  @click="dialogVisible = false">取消</el-button>
        <el-button :size="size"  type="primary" @click="submitForm()">确定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
import KtButton from "@/views/Core/KtButton"
import TableTreeColumn from \'@/views/Core/TableTreeColumn\'
import PopupTreeInput from "@/components/PopupTreeInput"
import FaIconTooltip from "@/components/FaIconTooltip"
export default {
    components:{
    PopupTreeInput,
    KtButton,
    TableTreeColumn,
    FaIconTooltip
    },
    data() {
        return {
            size: \'small\',
            loading: false,
            filters: {
                name: \'\'
      },
      tableTreeDdata: [],
      dialogVisible: false,
      menuTypeList: [\'目录\', \'菜单\', \'按钮\'],
      dataForm: {
        id: 0,
        type: 1,
        name: \'\',
        parentId: 0,
        parentName: \'\',
        url: \'\',
        perms: \'\',
        orderNum: 0,
        icon: \'\',
        iconList: []
      },
      dataRule: {
        name: [
          { required: true, message: \'菜单名称不能为空\', trigger: \'blur\' }
        ],
        parentName: [
          { required: true, message: \'上级菜单不能为空\', trigger: \'change\' }
        ]
      },
      popupTreeData: [],
      popupTreeProps: {
                label: \'name\',
                children: \'children\'
            }
        }
    },
    methods: {
        // 获取数据
    findTreeData: function () {
      this.loading = true
            this.$api.menu.findMenuTree().then((res) => {
        this.tableTreeDdata = res.data
        this.popupTreeData = this.getParentMenuTree(res.data)
        this.loading = false
            })
    },
        // 获取上级菜单树
    getParentMenuTree: function (tableTreeDdata) {
      let parent = {
        parentId: -1,
        name: \'根节点\',
        children: tableTreeDdata
      }
      return [parent]
    },
        // 显示新增界面
        handleAdd: function () {
            this.dialogVisible = true
            this.dataForm = {
        id: 0,
        type: 1,
        typeList: [\'目录\', \'菜单\', \'按钮\'],
        name: \'\',
        parentId: 0,
        parentName: \'\',
        url: \'\',
        perms: \'\',
        orderNum: 0,
        icon: \'\',
        iconList: []
      }
        },
        // 显示编辑界面
        handleEdit: function (row) {
      this.dialogVisible = true
      Object.assign(this.dataForm, row);
        },
    // 删除
    handleDelete (row) {
      this.$confirm(\'确认删除选中记录吗？\', \'提示\', {
                type: \'warning\'
      }).then(() => {
        let params = this.getDeleteIds([], row)
        this.$api.menu.batchDelete(params).then( res => {
          this.findTreeData()
          this.$message({message: \'删除成功\', type: \'success\'})
        })
      })
    },
    // 获取删除的包含子菜单的id列表
    getDeleteIds (ids, row) {
      ids.push({id:row.id})
      if(row.children != null) {
        for(let i=0, len=row.children.length; i<len; i++) {
          this.getDeleteIds(ids, row.children[i])
        }
      }
      return ids
    },
      // 菜单树选中
    handleTreeSelectChange (data, node) {
      this.dataForm.parentId = data.id
      this.dataForm.parentName = data.name
    },
    // 图标选中
    iconActiveHandle (iconName) {
      this.dataForm.icon = iconName
    },
    // 表单提交
    submitForm () {
      this.$refs[\'dataForm\'].validate((valid) => {
        if (valid) {
                    this.$confirm(\'确认提交吗？\', \'提示\', {}).then(() => {
                        this.editLoading = true
                        let params = Object.assign({}, this.dataForm)
                        this.$api.menu.save(params).then((res) => {
              if(res.code == 200) {
                                this.$message({ message: \'操作成功\', type: \'success\' })
                            } else {
                                this.$message({message: \'操作失败, \' + res.msg, type: \'error\'})
                            }
                            this.editLoading = false
                            this.$refs[\'dataForm\'].resetFields()
                            this.dialogVisible = false
                            this.findTreeData()
                        })
                    })
                }
      })
    }
    },
    mounted() {
    this.findTreeData()
    }
}
</script>

<style scoped>

</style>

其中对表格树组件进行了简单的封装。

views/Core/TableTreeColumn.vue

<template>
  <el-table-column :prop="prop" v-bind="$attrs">
    <template slot-scope="scope">
      <span @click.prevent="toggleHandle(scope.$index, scope.row)" :style="childStyles(scope.row)">
        <i :class="iconClasses(scope.row)" :style="iconStyles(scope.row)"></i>
        {{ scope.row[prop] }}
      </span>
    </template>
  </el-table-column>
</template>

<script>
  import isArray from \'lodash/isArray\'
  export default {
    name: \'table-tree-column\',
    props: {
      prop: {
        type: String
      },
      treeKey: {
        type: String,
        default: \'id\'
      },
      parentKey: {
        type: String,
        default: \'parentId\'
      },
      levelKey: {
        type: String,
        default: \'level\'
      },
      childKey: {
        type: String,
        default: \'children\'
      }
    },
    methods: {
      childStyles (row) {
        return { \'padding-left\': (row[this.levelKey] * 25) + \'px\' }
      },
      iconClasses (row) {
        return [ !row._expanded ? \'el-icon-caret-right\' : \'el-icon-caret-bottom\' ]
      },
      iconStyles (row) {
        return { \'visibility\': this.hasChild(row) ? \'visible\' : \'hidden\' }
      },
      hasChild (row) {
        return (isArray(row[this.childKey]) && row[this.childKey].length >= 1) || false
      },
      // 切换处理
      toggleHandle (index, row) {
        if (this.hasChild(row)) {
          var data = this.$parent.store.states.data.slice(0)
          data[index]._expanded = !data[index]._expanded
          if (data[index]._expanded) {
            data = data.splice(0, index + 1).concat(row[this.childKey]).concat(data)
          } else {
            data = this.removeChildNode(data, row[this.treeKey])
          }
          this.$parent.store.commit(\'setData\', data)
          this.$nextTick(() => {
            this.$parent.doLayout()
          })
        }
      },
      // 移除子节点
      removeChildNode (data, parentId) {
        var parentIds = isArray(parentId) ? parentId : [parentId]
        if (parentId.length <= 0) {
          return data
        }
        var ids = []
        for (var i = 0; i < data.length; i++) {
          if (parentIds.indexOf(data[i][this.parentKey]) !== -1 && parentIds.indexOf(data[i][this.treeKey]) === -1) {
            ids.push(data.splice(i, 1)[0][this.treeKey])
            i--
          }
        }
        return this.removeChildNode(data, ids)
      }
    }
  }
</script>