12451 b553c4e519 feat: API 统一 + 设备详情补全 + H5 导航优化

- API 路由统一: 移除 /api/h5/，统一 /api/pms/ 入口
- 二进制改名: api-server -> pms-api（与服务名一致）
- nginx: 合并 /api/ + /pms/api/ 为 /api/pms/
- 新增 docs/API.md 接口文档
- 后端: CabinetDetail 增加 rssi/pow_fail/address/soc 等字段
- Redis 管道批量读取仓体实时数据（SOC/电压/电流/功率）
- DB: 所有 TIMESTAMP 列改为 DATETIME（修复类型不匹配）
- 用户管理: 新增创建时间/修改时间列，状态改用 Switch
- 角色管理/用户管理: 操作按钮改为图标
- PC 设备详情: 基本信息补全 RSSI/ICCID/电源/地址
- PC 卡片: 通道统计改用 Lucide 图标，颜色统一
- PC 二维码: canvas 渲染，含编号文字，支持右键下载
- H5: 按 uni-app 规范修正导航（navigateTo 替代 reLaunch）
- H5: 详情页加返回导航条
- H5: 扫码支持摄像头（jsQR）+ ?id= 参数
- H5: 底部 tabBar 在所有页面常显
- H5: 首页统计改为 6 项（设备/通道/空闲/充电/充满/故障）
- H5: 下拉刷新 / 上拉加载
- 产品首页: 添加业务联系
- 文档: 清理过时文件，补充缺失规范章节

2026-07-04 04:03:02 +08:00

4.2 KiB

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title, impact, impactDescription, type, tags

title

impact

impactDescription

type

Clean Up Event Listeners and Intervals in onUnmounted

Impact: HIGH - Failing to clean up event listeners, intervals, timeouts, and subscriptions when a component unmounts causes memory leaks and ghost handlers that continue running, leading to performance degradation and subtle bugs in Single Page Applications.

When using custom events, timers, WebSocket connections, or third-party libraries, always clean up in onUnmounted (Composition API) or unmounted (Options API).

Task Checklist

Track all addEventListener calls and remove them in onUnmounted
Clear all setInterval and setTimeout calls in onUnmounted
Unsubscribe from external event emitters and observables
Disconnect WebSocket connections and third-party library instances
Use onBeforeUnmount if cleanup must happen before DOM removal

Incorrect:

// Composition API - WRONG: No cleanup
import { onMounted } from 'vue'

export default {
  setup() {
    onMounted(() => {
      // These keep running after component unmounts!
      window.addEventListener('resize', handleResize)
      setInterval(pollServer, 5000)
      socket.on('message', handleMessage)
    })
  }
}

// Options API - WRONG: No cleanup
export default {
  mounted() {
    window.addEventListener('scroll', this.handleScroll)
    this.timer = setInterval(this.refresh, 10000)
  }
  // Component unmounts, but listeners and timers persist!
}

Correct:

// Composition API - CORRECT: Proper cleanup
import { onMounted, onUnmounted, ref } from 'vue'

export default {
  setup() {
    const intervalId = ref(null)

    const handleResize = () => {
      // handle resize
    }

    const handleMessage = (msg) => {
      // handle message
    }

    onMounted(() => {
      window.addEventListener('resize', handleResize)
      intervalId.value = setInterval(pollServer, 5000)
      socket.on('message', handleMessage)
    })

    onUnmounted(() => {
      // Clean up everything!
      window.removeEventListener('resize', handleResize)

      if (intervalId.value) {
        clearInterval(intervalId.value)
      }

      socket.off('message', handleMessage)
    })
  }
}

// Options API - CORRECT: Proper cleanup
export default {
  data() {
    return {
      timer: null
    }
  },
  mounted() {
    window.addEventListener('scroll', this.handleScroll)
    this.timer = setInterval(this.refresh, 10000)
  },
  unmounted() {
    window.removeEventListener('scroll', this.handleScroll)
    if (this.timer) {
      clearInterval(this.timer)
    }
  },
  methods: {
    handleScroll() { /* ... */ },
    refresh() { /* ... */ }
  }
}

Using Composable Pattern for Auto-Cleanup

// Reusable composable with automatic cleanup
import { onMounted, onUnmounted } from 'vue'

export function useEventListener(target, event, handler) {
  onMounted(() => {
    target.addEventListener(event, handler)
  })

  onUnmounted(() => {
    target.removeEventListener(event, handler)
  })
}

export function useInterval(callback, delay) {
  let intervalId = null

  onMounted(() => {
    intervalId = setInterval(callback, delay)
  })

  onUnmounted(() => {
    if (intervalId) clearInterval(intervalId)
  })
}

// Usage - cleanup is automatic
import { useEventListener, useInterval } from './composables'

export default {
  setup() {
    useEventListener(window, 'resize', handleResize)
    useInterval(pollServer, 5000)
    // No manual cleanup needed!
  }
}

VueUse Alternative

// VueUse provides cleanup-aware composables
import { useEventListener, useIntervalFn } from '@vueuse/core'

export default {
  setup() {
    // Automatically cleaned up on unmount
    useEventListener(window, 'resize', handleResize)

    const { pause, resume } = useIntervalFn(pollServer, 5000)
    // Also provides pause/resume controls
  }
}

4.2 KiB Raw Blame History

Clean Up Event Listeners and Intervals in onUnmounted

Task Checklist

Using Composable Pattern for Auto-Cleanup

VueUse Alternative

Reference

4.2 KiB

Raw Blame History