之前写过一个类似的效果，vue element ui NavMenu 导航菜单 自定义样式，这次需要一个白色背景的，有部分逻辑变动，记录一下，方便后期选择使用。

使用

<main-sidebar :openeds="[1]" active="apiManagement"/>

组件代码

/**
* @Author: 858834013@qq.com
* @Name: sidebar
* @Date: 2022-07-22
* @Desc: 导航自定义样式
*/
<template>
  <div class="sidebar">
    <div class="logo">
      <img src="../assets/nav/logo.png" alt="">
    </div>
    <div class="sidebarList hideScrollBar">
      <div class="menus">
        <el-menu
            default-active="2"
            class="el-menu-vertical-demo"
            @open="handleOpen"
            :unique-opened="true"
            @select="handleSelect"
            :default-openeds="openeds"
            :default-active="active"
            @close="handleClose">
          <el-submenu :index="index" :class="{active:!item.children}" v-for="(item,index) in list" :key="index">
            <template slot="title">
              <div class="title" @click="goUrlHome(item)">
                <div class="icon">
                  <i class="icons" :class="item.icon"></i>
                </div>
                <span>{{ item.name }}</span>
              </div>
            </template>
            <el-menu-item-group>
              <div @click="goUrl(item2)" v-for="(item2,index2) in item.children" :key="index2">
                <el-menu-item :index="item2.index">{{ item2.name }}
                  <div class="line"></div>
                </el-menu-item>
              </div>
            </el-menu-item-group>
          </el-submenu>
        </el-menu>
      </div>
    </div>
  </div>
</template>

<script>

export default {
  name: "sidebar",
  components: {},
  props: {
    openeds: {
      type: Array,
      default() {
        return [0];
      }
    },
    active: {
      type: String,
      default() {
        return ''
      }
    },
  },
  data() {
    return {
      isActive: false,
      list: [
        {
          "id": "1",
          "pid": "0",
          "name": "首页",
          "url": "/home",
          "type": 0,
          "icon": "icon1",
          "permissions": "",
          "sort": 0,
          "createDate": "2022-07-14 12:04:00",
          "parentName": null
        },
        {
          "id": "2",
          "pid": "0",
          "children": [
            {
              "id": "21",
              "pid": "21",
              "children": [],
              "name": "API管理",
              "url": "/product/apiManagement",
              "type": 0,
              "icon": "",
              "index": 'apiManagement',
              "permissions": "",
              "sort": 0,
              "createDate": "2022-07-14 12:04:00",
              "parentName": null
            }, {
              "id": "21",
              "pid": "21",
              "children": [],
              "name": "客户白名单管理",
              "url": "/product/whiteList",
              "type": 0,
              "icon": "",
              "index": 'whiteList',
              "permissions": "",
              "sort": 0,
              "createDate": "2022-07-14 12:04:00",
              "parentName": null
            },
          ],
          "name": "产品管理",
          "url": "",
          "type": 0,
          "icon": "icon2",
          "permissions": "",
          "sort": 0,
          "createDate": "2022-07-14 12:04:00",
          "parentName": null
        },
        {
          "id": "3",
          "pid": "0",
          "children": [
            {
              "id": "31",
              "pid": "3",
              "children": [],
              "name": "客户列表",
              "url": "sys/customer",
              "type": 0,
              "index": 'customer',
              "icon": "",
              "permissions": "",
              "sort": 0,
              "createDate": "2022-07-14 12:04:00",
              "parentName": null
            }
          ],
          "name": "客户管理",
          "url": "",
          "type": 0,
          "icon": "icon3",
          "permissions": "",
          "sort": 0,
          "createDate": "2022-07-14 12:04:00",
          "parentName": null
        },
        {
          "id": "4",
          "pid": "0",
          "children": [
            {
              "id": "41",
              "pid": "4",
              "children": [],
              "name": "发票管理",
              "url": "financial/invoice",
              "type": 0,
              "icon": "",
              "index": 'invoice',
              "permissions": "",
              "sort": 2,
              "createDate": "2022-07-14 12:04:00",
              "parentName": null
            }
          ],
          "name": "财务管理",
          "url": "/",
          "type": 0,
          "icon": "icon4",
          "permissions": "",
          "sort": 0,
          "createDate": "2022-07-14 12:04:00",
          "parentName": null
        },
        {
          "id": "5",
          "pid": "0",
          "children": [
            {
              "id": "51",
              "pid": "5",
              "children": [],
              "name": "API订单",
              "url": "sys/apiOrders",
              "type": 0,
              "icon": "",
              "index": 'apiOrders',
              "permissions": "",
              "sort": 2,
              "createDate": "2022-07-14 12:04:00",
              "parentName": null
            }
          ],
          "name": "订单管理",
          "url": "",
          "type": 0,
          "icon": "icon5",
          "permissions": "",
          "sort": 0,
          "createDate": "2022-07-14 12:04:00",
          "parentName": null
        },
        {
          "id": "6",
          "pid": "0",
          "children": [
            {
              "id": "61",
              "pid": "6",
              "children": [],
              "name": "人员管理",
              "url": "sys/personnelManagement",
              "type": 0,
              "icon": "",
              "index": 'personnelManagement',
              "permissions": "",
              "sort": 2,
              "createDate": "2022-07-14 12:04:00",
              "parentName": null
            }, {
              "id": "62",
              "pid": "6",
              "children": [],
              "name": "角色管理",
              "url": "sys/roleManagement",
              "type": 0,
              "index": 'roleManagement',
              "icon": "",
              "permissions": "",
              "sort": 2,
              "createDate": "2022-07-14 12:04:00",
              "parentName": null
            },
          ],
          "name": "系统管理",
          "url": "",
          "type": 0,
          "icon": "icon6",
          "permissions": "",
          "sort": 0,
          "createDate": "2022-07-14 12:04:00",
          "parentName": null
        },
        {
          "id": "7",
          "pid": "0",
          "children": [
            {
              "id": "71",
              "pid": "7",
              "children": [],
              "name": "轮播列表",
              "url": "sys/banner",
              "index": 'banner',
              "type": 0,
              "icon": "",
              "permissions": "",
              "sort": 2,
              "createDate": "2022-07-14 12:04:00",
              "parentName": null
            }
          ],
          "name": "轮播管理",
          "url": "",
          "type": 0,
          "icon": "icon7",
          "permissions": "",
          "sort": 0,
          "createDate": "2022-07-14 12:04:00",
          "parentName": null
        },
      ]
    }
  },
  watch: {
    $route(to, from) {
      this.getActive()
    }
  },
  methods: {
    handleOpen(key, keyPath) {
      console.log(key, keyPath);
      // if (item.children.length == 0) {
      //   this.$router.push({path: item.url});
      // }
    },
    handleSelect(key, keyPath) {
      console.log(key, keyPath);
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath);
    },
    goUrlHome(item) {
      console.log(item)
      if (!item.children) {
        this.$router.push({path: item.url});
      }
    },
    goUrl(item) {
      this.$router.push({path: item.url});
    }
  }
}
</script>

<style lang="scss" scoped>
.sidebar {
  width: 240px;
  height: 100%;
  position: fixed;
  box-shadow: 2px 0px 4px 1px rgba(153, 153, 153, 0.1600);
  left: 0;
  top: 0;
  background: #fff;

  .logo {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: nowrap;
    flex-direction: row;
    align-content: flex-start;
    padding-top: 44px;

    img {
      width: 132px;
    }
  }

  .sidebarList {
    padding-top: 46px;
  }

  .sidebarList {
    position: relative;
    height: calc(100% - 110px);
    overflow-y: scroll;

    a {
      text-decoration: none;
    }
  }
}

.title {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  flex-wrap: nowrap;
  flex-direction: row;
  align-content: flex-start;
  font-size: 16px;
  font-family: Microsoft YaHei-Regular, Microsoft YaHei;
  font-weight: 400;
  color: #333333;

  .icon {
    display: flex;
    margin-left: 40px;
    justify-content: center;
    align-items: center;
    flex-wrap: nowrap;
    flex-direction: row;
    align-content: flex-start;
    font-size: 20px;
  }
}

.menus {
  width: 100%;
  margin: 0 auto;

  ::v-deep {
    .el-menu-item-group__title {
      padding: 0;
    }

    .el-menu {
      border: none;
      background: none;
    }

    .el-submenu {
      margin-bottom: 0px;
    }

    .el-submenu__title {
      width: 100%;
      height: 50px;
      box-shadow: 0px 6px 16px 0px rgba(1, 44, 76, 0);
      font-size: 16px;
      font-family: MicrosoftYaHei;
      font-weight: 400;
      color: #A5C0D4;
      padding-left: 0 !important;
      padding-right: 0 !important;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: nowrap;
      flex-direction: row;
      align-content: flex-start;

      i {
        color: #9db9ce;
      }
    }

    .el-submenu .el-menu-item {
      background: none;
      color: #b3b3b3;
      font-size: 16px;
      margin-left: 40px;
      padding-left: 36px !important;
      height: 40px;
      line-height: 40px;
    }

    .el-menu-item.is-active {
      width: 200px;
      height: 40px;
      background: rgba(#609AFF, 0.1);
      border-radius: 4px 4px 4px 4px;
      font-size: 14px;
      font-family: Microsoft YaHei-Regular, Microsoft YaHei;
      font-weight: 400;
      color: #327DFF;
      position: relative;

      .line {
        width: 4px;
        height: 40px;
        background: #609AFF;
        opacity: 0.9;
        position: absolute;
        right: 0;
        top: 0;
      }
    }


    .el-submenu__title:hover {
      background: #eff5ff;
      font-size: 16px;
      font-family: MicrosoftYaHei;
      font-weight: bold;
      color: #a1a1a1;

      span {
        color: rgba(50, 125, 255, 1);
      }

      i {
        color: #a1a1a1;
      }
    }

    .el-submenu.active {
      .el-submenu__icon-arrow {
        display: none;
      }
    }

    .is-opened.active .el-submenu__title {
      background: #eff5ff;
    }

    .is-active .el-submenu__title, .is-opened .el-submenu__title {
      font-size: 16px;
      font-family: MicrosoftYaHei;
      font-weight: bold;
      color: #a1a1a1;

      span {
        color: rgba(50, 125, 255, 1);
      }

      i {
        color: #a1a1a1;
      }
    }
  }
}

.icons {
  width: 20px;
  height: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: nowrap;
  flex-direction: row;
  align-content: flex-start;
  margin-right: 16px;
}

.navInfo {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  flex-wrap: nowrap;
  flex-direction: row;
  align-content: flex-start;
}

.icons.icon1 {
  background: url("../assets/nav/icon_1.png") center center no-repeat;
  background-size: 20px 20px;
}

.icons.icon2 {
  background: url("../assets/nav/icon_2.png") center center no-repeat;
  background-size: 20px 20px;
}

.icons.icon3 {
  background: url("../assets/nav/icon_3.png") center center no-repeat;
  background-size: 20px 20px;
}

.icons.icon4 {
  background: url("../assets/nav/icon_4.png") center center no-repeat;
  background-size: 20px 20px;
}

.icons.icon5 {
  background: url("../assets/nav/icon_5.png") center center no-repeat;
  background-size: 20px 20px;
}

.icons.icon6 {
  background: url("../assets/nav/icon_6.png") center center no-repeat;
  background-size: 20px 20px;
}

.icons.icon7 {
  background: url("../assets/nav/icon_7.png") center center no-repeat;
  background-size: 20px 20px;
}

.is-opened, .el-submenu__title:hover {
  .icons.icon1 {
    background: url("../assets/nav/icon_1_active.png") center center no-repeat;
    background-size: 20px 20px;
  }

  .icons.icon2 {
    background: url("../assets/nav/icon_2_active.png") center center no-repeat;
    background-size: 20px 20px;
  }

  .icons.icon3 {
    background: url("../assets/nav/icon_3_active.png") center center no-repeat;
    background-size: 20px 20px;
  }

  .icons.icon4 {
    background: url("../assets/nav/icon_4_active.png") center center no-repeat;
    background-size: 20px 20px;
  }

  .icons.icon5 {
    background: url("../assets/nav/icon_5_active.png") center center no-repeat;
    background-size: 20px 20px;
  }

  .icons.icon6 {
    background: url("../assets/nav/icon_6_active.png") center center no-repeat;
    background-size: 20px 20px;
  }

  .icons.icon7 {
    background: url("../assets/nav/icon_7_active.png") center center no-repeat;
    background-size: 20px 20px;
  }
}
</style>