南哪充电，从毛坯到完善

2024 年 12 月 1 日 星期日(已编辑)
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南哪充电，从毛坯到完善

欢迎访问我写的 南哪充电-鼓楼 或 南哪充电-仙林

这一切的起源来自于9月份的某个晚上没有找到充电桩……
事实上在那之前已经有一个南哪充电的网页了： https://charge.zhuxh.net/

不过我个人用起来感觉还是差点意思，只能一眼看见哪里还有空闲，但由于充电桩过于不够，想充电的时候很可能是一片全红，或者仅有的绿色离自己很远。
于是我也准备自己写一个，能够显示预计剩余时间，方便我去提前蹲守 ，卷死你们

后端爬取数据

爬虫对我来说还是挺简单的，毕竟也写了好几个爬虫相关项目了，Reqable启动！

获取充电站ID

首先闪开来电在一堆请求中筛选出属于南大仙林的充电站点，拿到充电站点的 station_id ，这一步属于纯手抄，具体id如下：

https://github.com/Do1e/NJUCharge-backend/blob/main/stations.json

获取每个充电站下插座ID

上一步只有33个充电站，手抄倒也能接受，不过302个插座ID也要手抄的话还是放过我吧。
从 f'https://wemp.issks.com/charge/v1/outlet/station/outlets/{station_id}' 中可以获取每个充电站点的信息，其中包含插座的id。
注意，这一步必须在请求头中添加 token(一串issks_开头的字符串)。代码如下：

https://github.com/Do1e/NJUCharge-backend/blob/main/utils/per_station.py

终于，来获取每个插座的状态吧

在上一步我们能拿到每个充电站（比如天文学院）下每一个充电插座的outletNo，这一步就可以根据outletNo，从 f'https://wemp.issks.com/charge/v1/charging/outlet/{outletNo}' 中获取每个插座的具体状态了！

返回示例：

{
  "code": "1",
  "msg": "成功",
  "data": {
    "userName": null,
    "supportPayType": null,
    "monthlyDetail": {
      "monthlyPlanId": null,
      "renewFlag": false,
      "districtName": null,
      "hasUserMonthlyPlan": 0,
      "whiteMonthly": false,
      "districtWhite": false,
      "hasDistrictMonthlyPlan": 0,
      "monthlyUsedChargingLength": 0,
      "isMonthlyPlanAvailable": 0,
      "availableChargingTime": 0,
      "expiresTime": null,
      "iType": null,
      "iDistrictId": 18877,
      "dLimitPower": null,
      "iParkId": null,
      "wuYou": 0
    },
    "version": 3,
    "business": {
      "businessDays": null,
      "businessInTime": 1,
      "businessopen": 0,
      "tBusinessStart": null,
      "tBusinessEnd": null,
      "businessType": null
    },
    "outlet": {
      "iOutletId": 1435883,
      "vOutletName": "插座7",
      "iState": 1,
      "iCurrentChargingRecordId": 0,
      "vOutletNo": "O230424025883180",
      "iErrorCount": 0
    },
    "station": {
      "iStationId": 161740,
      "iAreaId": 786688,
      "iFullChargingTime": 0,
      "vStationName": "南京大学仙林校区18栋1号机",
      "iState": 1,
      "iHardWareState": "在线",
      "hardWareState": 1
    },
    "billListDtoList": [
      {
        "billingType": 4,
        "billingTypeName": "固定金额模式",
        "proAmount": 1.0,
        "startPriceCountIndex": 0,
        "propertyList": [
          {
            "iPowerLimitStr": 0,
            "iPowerLimitEnd": 120,
            "dFeePerMin": 1.0,
            "dFeePerHour": 60.0,
            "iHour": 6.0,
            "dDisCountFeePerMin": null,
            "dDisCountFeePerHour": null,
            "vStartTime": null,
            "vEndTime": null,
            "iType": 3
          },
          {
            "iPowerLimitStr": 121,
            "iPowerLimitEnd": 900,
            "dFeePerMin": 1.0,
            "dFeePerHour": 60.0,
            "iHour": 5.0,
            "dDisCountFeePerMin": null,
            "dDisCountFeePerHour": null,
            "vStartTime": null,
            "vEndTime": null,
            "iType": 3
          },
          {
            "iPowerLimitStr": 0,
            "iPowerLimitEnd": 900,
            "dFeePerMin": 2.0,
            "dFeePerHour": 120.0,
            "iHour": 10.0,
            "dDisCountFeePerMin": null,
            "dDisCountFeePerHour": null,
            "vStartTime": null,
            "vEndTime": null,
            "iType": 3
          }
        ],
        "isDefaultBilling": 1,
        "showMaxPowerInfo": 1
      }
    ],
    "staff": {
      "tBeginTime": null,
      "tEndTime": null,
      "isDisFree": 0,
      "isFree": 0,
      "freeType": 0,
      "ruleTimes": null
    },
    "banners": [
      {
        "iBannerId": 342,
        "iType": 1,
        "vImgUrl": "/skoms/doc/2023-03-08/it01on9v1gr9o5mo.png",
        "vHref": "https://api.issks.com/issksh5/?#/activityPage/pages/yearCardPage/yearCardPage",
        "iImgUrlType": 1,
        "iLinkMiniApp": 0,
        "vOriginalId": "",
        "vMiniAppId": null,
        "iLinkType": "EXTERNAL_LINK",
        "iSecond": 0,
        "vRemark": null
      },
      {
        "iBannerId": 404,
        "iType": 1,
        "vImgUrl": "/skoms/doc/2024-11-19/xdaecvf5cijrldxu.jpg",
        "vHref": "https://mp.weixin.qq.com/s/SwNDfydkbIvfmrki3G3FMQ",
        "iImgUrlType": 1,
        "iLinkMiniApp": 0,
        "vOriginalId": "",
        "vMiniAppId": null,
        "iLinkType": "EXTERNAL_LINK",
        "iSecond": 0,
        "vRemark": null
      },
      {
        "iBannerId": 427,
        "iType": 1,
        "vImgUrl": "/skoms/doc/2024-11-08/5g190u60qsvrb2oe.jpg",
        "vHref": "https://api.issks.com/issksh5/?#/sonPage/pages/batteryReport/batteryReport",
        "iImgUrlType": 1,
        "iLinkMiniApp": 0,
        "vOriginalId": "",
        "vMiniAppId": null,
        "iLinkType": "EXTERNAL_LINK",
        "iSecond": 0,
        "vRemark": null
      },
      {
        "iBannerId": 384,
        "iType": 1,
        "vImgUrl": "/skoms/doc/2024-11-15/yu1xh86jqzy7wb5x.jpg",
        "vHref": "https://shop-sksop.issks.com",
        "iImgUrlType": 1,
        "iLinkMiniApp": 1,
        "vOriginalId": "gh_6f1e4731d3ad",
        "vMiniAppId": "wx14dcf42b12d3f02c",
        "iLinkType": "EXTERNAL_LINK",
        "iSecond": 0,
        "vRemark": null
      },
      {
        "iBannerId": 347,
        "iType": 1,
        "vImgUrl": "/skoms/doc/2023-04-10/asurox92j5of1vfb.gif",
        "vHref": "https://zf.shanghcat.com/tdpl/index?cid=94825049&pln=14580873",
        "iImgUrlType": 1,
        "iLinkMiniApp": 0,
        "vOriginalId": "",
        "vMiniAppId": null,
        "iLinkType": "EXTERNAL_LINK",
        "iSecond": 0,
        "vRemark": null
      },
      {
        "iBannerId": 420,
        "iType": 1,
        "vImgUrl": "/skoms/doc/2024-09-29/b9skyf6l9ul268wq.jpg",
        "vHref": "https://mp.weixin.qq.com/s/HKuy_UFI5y2832YVOLTtzQ",
        "iImgUrlType": 1,
        "iLinkMiniApp": 0,
        "vOriginalId": "",
        "vMiniAppId": null,
        "iLinkType": "EXTERNAL_LINK",
        "iSecond": 0,
        "vRemark": null
      }
    ],
    "popups": null,
    "floatBanner": null,
    "powerFee": null,
    "usedMonthly": 0,
    "type": 0,
    "pageViewType": "common",
    "curTime": 1732984774218,
    "registerMobile": null,
    "presetLastTime": 0,
    "restmin": 0,
    "usedmin": 0,
    "usedfee": null,
    "currentUser": null,
    "cardfunds": 0,
    "funds": 0.0,
    "safeOpenFlag": 1,
    "closeWuyouSwitch": 0,
    "safeOpenFee": 0.09,
    "safeChargingOpen": 0,
    "nowBillingType": 0,
    "electric": 0,
    "chargingBeginTime": null,
    "normalMonthParkRecord": 0,
    "smartMonthParkRecord": 0,
    "chargeDiscount": null,
    "fixedAmount": {
      "amountList": [
        1.0,
        2.0
      ],
      "defaultAmountIndex": 1,
      "defaultPowerIndex": 2
    },
    "universityProperty": {
      "options": [
        "1",
        "2",
        "3"
      ],
      "maxOption": "20",
      "minOption": "3"
    },
    "noticeType": 0,
    "noticeContent": null,
    "availableNotice": 0,
    "urlLink": null,
    "available": 0,
    "userSelectAmount": null,
    "isCloseWuYou": 0,
    "canCopy": null,
    "nationalStandard": 0,
    "buttonType": 1,
    "helpMobile": null,
    "title": null,
    "managerPriceIsHour": 0,
    "activityContent": null,
    "qrcoed": 0,
    "subscribed": 0,
    "districtId": 18877,
    "showMinute": 0,
    "tags": [
      "UNIVERSITY"
    ],
    "secondaryCardGuide": 0,
    "secondaryCardNum": null,
    "averageAmount": null,
    "secondaryCardMinAmount": null,
    "text": null,
    "alipayUrl": "https://t.bfr2.top/p18OoKF",
    "weather": null,
    "weatherType": null,
    "tianMu": false
  },
  "success": true
}

其实里面很多信息都是不必要的，我这里把插座名称、预计剩余时间、已使用时间、状态代码（空闲、故障、分钟计费模式、固定金额模式）、是否有错误信息这几个拿下来就好了，同时再算出一个预计可用时间方便前端直接展示（毕竟我前端实在太弱了）。代码如下：

https://github.com/Do1e/NJUCharge-backend/blob/main/utils/per_outlet.py

幸运的是，获取状态这一步并不需要token，而每个站点下面的插座完全固定不变。之后更新数据只要根据已有的outletNo重复执行这一步就OK了。

数据后处理

我自己部署时用多线程（302条数据基本2秒左右就搞定了，实测下来也不会触发风控）跑，定时每分钟在后端机器上更新一次数据。
为了方便前端调用，我还在后端将数据按照剩余时间排序，以及将充电站点从原来按xx号机归类改为xx栋：

https://github.com/Do1e/NJUCharge-backend/blob/main/sort_outlets.py

第一版前端

毕竟是前端白痴，我的第一版前端设置是使用Python生成的。＞︿＜
发出来给大家笑话一下

import json

with open("output/outlets.json", "r", encoding="utf-8") as f:
    outlets = json.load(f)

keys = ["station", "name", "restmin", "available_time", "usedmin", "msg", "update_time"]
station_options = set()
for outlet in outlets:
    station_options.add(outlet["station"])
station_options = list(station_options)
station_options.sort()


html = '<div class="filter-container"><label for="filter-station">选择站点:</label><select id="filter-station"><option value="">All</option>'
for station in station_options:
    html += f'<option value="{station}">{station}</option>'
html += "</select></div>"

html += "<table>\n<thead>\n<tr>\n"
for key in keys:
    html += f"<th>{key}</th>"
html += "</tr>\n</thead>\n<tbody>\n"

for outlet in outlets:
    html += "<tr>"
    for key in keys:
        if key == "msg" and outlet[key] == "空闲":
            html += f'<td class="status-available">{outlet[key]}</td>'
        elif key == "msg" and outlet[key] == "故障":
            html += f'<td class="status-error">{outlet[key]}</td>'
        elif key == "msg":
            html += f'<td class="status-busy">{outlet[key]}</td>'
        elif key == "restmin" and outlet[key] < 20:
            html += f'<td class="status-available">{outlet[key]}</td>'
        else:
            html += f'<td class="tdnormal"><span>{outlet[key]}</span></td>'
    html += "</tr>\n"
html += "</tbody>\n</table>"

with open("html_template.html", "r", encoding="utf-8") as f:
    template = f.read()
    html = template.replace("{{table}}", html)

with open("index.html", "w", encoding="utf-8") as f:
    f.write(html)

而且界面也是相当简陋，不过好歹还是用GPT帮我生成了一段js代码用于筛选站点

第二版前端

所谓的第二版也只是写了几句css尽力去拯救这个界面罢了。

第三版前端

我开始捣鼓我的新版个人主页了，既然Mix Space支持写Markdown with JavaScript，我就把/charge.html挂在了个人主页下了，并且也改进了原来的筛选功能，进行筛选的同时会更改URL参数，这样刷新之后也能记住上次用户筛选的站点并直接展示出来了。

var filter = document.getElementById('filter-station');
var urlParams = new URLSearchParams(window.location.search);
var initialFilter = urlParams.get('filter') || '';
filter.value = initialFilter;
filterTable();

filter.addEventListener('change', function () {
  var selectedValue = filter.value;
  if (selectedValue === '') {
    urlParams.delete('filter');
  } else {
    urlParams.set('filter', selectedValue);
  }
  if (urlParams.toString() === '') {
    window.history.replaceState({}, '', location.pathname);
  } else {
    window.history.replaceState({}, '', `${location.pathname}?${urlParams}`);
  }
  filterTable();
});

function filterTable() {
  var rows = document.getElementsByTagName('tr');
  for (var i = 1; i < rows.length; i++) {
    var row = rows[i];
    var name = row.children[0].textContent.toLowerCase();
    var nameFilter = filter.value.toLowerCase();
    if (name.indexOf(nameFilter) !== -1 || nameFilter === '') {
      row.style.display = 'table-row';
    } else {
      row.style.display = 'none';
    }
  }
}

在设计这一版前端颜色的时候，一开始想着按照红绿灯配色（红黄绿）表示预计剩余时间的三种状态，但脑子已经被《败犬女主太多了》占据。这里面的三种代表色似乎也能很好地表达出类似的意思，于是到其官网上把配色偷借了过来。

第四版前端

由于从第一版就用表格展示，从上面的图也能看出来，在更常用的应用场景——手机上的体验属实一言难尽。于是下定决定重构了半天的UI，并且在开头添加了一个统计表格，可用更方便地规划充电目的地了。

基本所有前后端代码都在下面的github仓库中，欢迎使用但请遵守MIT协议，使用时保留我的版权信息。

后续小更新

  • 2024-12-01 16:02：新增鼓楼校区
  • 2025-01-07 19:44：今天突然发现充电必须充值后按分钟计费了，岂可休。更新了按已使用时间逆序，按照闪开充电提供的说明，这个时间最大为480分钟，至少还是能作为参考大概知道哪个充电桩快结束了。

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