原本使用element plus的el-tree，可是他的UI不匹配，狠难改成自己想要的，所以只能自己去写一个，做法：使用递归组件

效果

组件代码itemDir.vue

// itemDir.vue

<template>
  <div>
    <ul v-for="node in lists" :key="node.id" class="menu-item">
      <li :class="{ active: node.id === activeId }" @click="selectNode(node)">
        <span class="item-item-text" :style="{ paddingLeft: depth * 20 + 'px' }">{{ node.name }}</span>
        <el-icon v-if="node.childs && node.childs.length" class="arrow">
          <ArrowDown v-if="isExpanded(node)" />
          <ArrowRight v-else />
        </el-icon>
      </li>
      <el-collapse-transition>
        <template v-if="isExpanded(node) && node.childs && node.childs.length">
          <ItemDir v-model="activeId" :lists="node.childs" :depth="depth + 1" />
        </template>
      </el-collapse-transition>
    </ul>
  </div>
</template>

<script setup>
import { ArrowRight, ArrowDown } from '@element-plus/icons-vue'
import { ref, watch } from 'vue'

const props = defineProps({
  modelValue: {
    type: Number,
    default: undefined
  },
  lists: {
    type: Array,
    default: () => []
  },
  depth: {
    type: Number,
    default: 0
  }
})
const emits = defineEmits(['update:modelValue'])

const activeId = ref(props.modelValue)
const expandedNodes = ref([])

watch(
  () => props.modelValue,
  newValue => {
    activeId.value = newValue
  }
)

watch(activeId, newValue => {
  emits('update:modelValue', newValue)
})

const isExpanded = node => expandedNodes.value.some(n => n.id === node.id)

const selectNode = node => {
  activeId.value = node.id
  console.log(node)

  const index = expandedNodes.value.findIndex(n => n.id === node.id)
  if (index === -1) {
    expandedNodes.value.push(node)
  } else {
    expandedNodes.value.splice(index, 1)
  }
}
</script>

<style lang="scss" scoped>
.menu-item {
  > li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-sizing: border-box;
    height: 44px;
    padding-right: 12px;
    padding-left: 24px;
    color: #666666;
    font-weight: 400;
    font-size: 12px;
    font-family: PingFangSC, 'PingFang SC';
    font-style: normal;
    line-height: 12px;
    text-align: left;
    cursor: pointer;
  }

  .active {
    color: #333333;
    font-weight: bold;
    background: #f5f5f5;
  }
}
</style>

调用index.vue

// index.vue

<template>
	<div class="menu-list">
      <itemDir v-model="activeId" :lists="menus" />
    </div>
</template>

<script setup>
import { ref, onMounted, watch } from 'vue'
import itemDir from './itemDir.vue'
const activeId = ref(undefined)
const menus = ref([
	{
            "id": 187,
            "pid": null,
            "name": "地图资源库",
            "childs": [
                {
                    "id": 201,
                    "pid": 187,
                    "name": "电子地图底座",
                    "childs": [
                        {
                            "id": 225,
                            "pid": 201,
                            "name": "全球S-57电子海图数据",
                            "childs": null,
                        },
                        {
                            "id": 226,
                            "pid": 201,
                            "name": "基于互联网应用的中国电子海图服务",
                            "childs": null,
                        },
                        {
                            "id": 227,
                            "pid": 201,
                            "name": "S-57全球连续无缝背景电子海图",
                            "childs": null,
                        }
                    ],
                },
                {
                    "id": 202,
                    "pid": 187,
                    "name": "海陆图融合",
                    "childs": [
                        {
                            "id": 222,
                            "pid": 202,
                            "name": "海图",
                            "childs": null,
                        },
                        {
                            "id": 223,
                            "pid": 202,
                            "name": "海图及陆图",
                            "childs": null,
                        },
                        {
                            "id": 224,
                            "pid": 202,
                            "name": "海图及卫星图",
                            "childs": null,
                        }
                    ],
                },
                {
                    "id": 203,
                    "pid": 187,
                    "name": "区域边界设置",
                    "childs": [
                        {
                            "id": 215,
                            "pid": 203,
                            "name": "管辖边界标注",
                            "childs": null,
                        },
                        {
                            "id": 216,
                            "pid": 203,
                            "name": "航道边界标注",
                            "childs": null,
                        },
                        {
                            "id": 217,
                            "pid": 203,
                            "name": "港口边界标注",
                            "childs": null,
                        },
                        {
                            "id": 218,
                            "pid": 203,
                            "name": "锚地边界标注",
                            "childs": null,
                        },
                        {
                            "id": 219,
                            "pid": 203,
                            "name": "领海边界标注",
                            "childs": null,
                        },
                        {
                            "id": 220,
                            "pid": 203,
                            "name": "经济专属区边界标注",
                            "childs": null,
                        },
                        {
                            "id": 221,
                            "pid": 203,
                            "name": "管控区域边界标注",
                            "childs": null,
                        }
                    ],
                },
                {
                    "id": 204,
                    "pid": 187,
                    "name": "长江航道瓦片图",
                    "childs": null,
                },
                {
                    "id": 205,
                    "pid": 187,
                    "name": "地图叠加图层",
                    "childs": [
                        {
                            "id": 206,
                            "pid": 205,
                            "name": "辖区航标数据库",
                            "childs": null,
                        },
                        {
                            "id": 207,
                            "pid": 205,
                            "name": "辖区海区数据库",
                            "childs": null,
                        },
                        {
                            "id": 208,
                            "pid": 205,
                            "name": "辖区时区数据库",
                            "childs": null,
                        },
                        {
                            "id": 209,
                            "pid": 205,
                            "name": "辖区国家领海基线数据库",
                            "childs": null,
                        },
                        {
                            "id": 210,
                            "pid": 205,
                            "name": "辖区重要海峡数据库",
                            "childs": null,
                        },
                        {
                            "id": 211,
                            "pid": 205,
                            "name": "辖区海上贸易区数据库",
                            "childs": null,
                        },
                        {
                            "id": 212,
                            "pid": 205,
                            "name": "辖区金融敏感区数据库",
                            "childs": null,
                        },
                        {
                            "id": 213,
                            "pid": 205,
                            "name": "辖区主要海盗区数据库",
                            "childs": null,
                        },
                        {
                            "id": 214,
                            "pid": 205,
                            "name": "辖区废弃污染物ECA排放控制区数据库",
                            "childs": null,
                        }
                    ],
                }
            ],
        },
])
</script>