feat: 恢复code2 的获取方式

1012414140@qq.com

2026-10-16 5cca41e6d141e1366776c8580c732082ec50c487

 public/index.html

@@ -1,19 +1,143 @@
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no">
    <title>峰峰矿区智慧停车</title>
    <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=tuVbv4tLIzoX7IWdeKeTwojDqPILFoe5"></script>
    <!--<script src="//mapv.baidu.com/build/mapv.min.js"></script>
    <script src="https://code.bdstatic.com/npm/mapvgl@1.0.0-beta.127/dist/mapvgl.min.js"></script>-->
    <script type="text/javascript" src="http://api.map.baidu.com/library/Heatmap/2.0/src/Heatmap_min.js"></script>
    <script src="./static/iconfont.js"></script>
<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no">
  <title>峰峰矿区智慧停车</title>

    <title>峰峰智慧泊车系统</title>
  </head>
  <body>
    <div id="app"></div>
  </body>
  <!--
    样式文件：主源用国内阿里云 npmmirror（移动/联通/电信网络稳定可达），
    加载失败自动切回 jsdelivr。CSS 失败不会导致白屏，仅样式异常。
  -->
  <link rel="stylesheet"
        href="https://registry.npmmirror.com/element-ui/2.15.14/files/lib/theme-chalk/index.css"
        onerror="this.onerror=null;this.href='https://cdn.jsdelivr.net/npm/element-ui@2.15.14/lib/theme-chalk/index.css'">
  <link rel="stylesheet"
        href="https://registry.npmmirror.com/view-design/4.7.0/files/dist/styles/iview.css"
        onerror="this.onerror=null;this.href='https://cdn.jsdelivr.net/npm/view-design@4.7.0/dist/styles/iview.css'">

  <style>
    /* 首屏加载占位（Vue 挂载后会自动替换掉 #app 内的内容） */
    #app-loading{position:fixed;top:0;left:0;right:0;bottom:0;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#f5f7fa;color:#606266;font-size:15px;z-index:9998}
    #app-loading .spin{width:38px;height:38px;margin-bottom:14px;border:3px solid #dcdfe6;border-top-color:#409eff;border-radius:50%;animation:appspin .8s linear infinite}
    @keyframes appspin{to{transform:rotate(360deg)}}
    /* 资源全部加载失败时的提示层，替代“纯白屏” */
    #fatal-mask{display:none;position:fixed;top:0;left:0;right:0;bottom:0;inset:0;z-index:9999;background:#fff;align-items:center;justify-content:center;padding:30px;box-sizing:border-box}
    #fatal-mask .box{max-width:420px;text-align:center;color:#303133}
    #fatal-mask .ico{font-size:44px;color:#f56c6c;margin-bottom:14px}
    #fatal-mask .msg{font-size:15px;line-height:1.7;color:#606266;margin-bottom:20px;word-break:break-all}
    #fatal-mask button{padding:10px 34px;font-size:15px;color:#fff;background:#409eff;border:none;border-radius:4px;outline:none}
    #fatal-mask button:active{background:#3a8ee6}
  </style>

  <script>
    /*
     * 基础库（Vue / ElementUI / ViewUI / ECharts）多源容灾加载器
     *
     * 背景：这些库通过 webpack externals 外置，业务包执行强依赖对应的全局变量。
     * 之前只引用 cdn.jsdelivr.net 一个源，该域名在国内手机蜂窝网络（4G/5G）下
     * 经常被 DNS 污染 / 连接重置，脚本加载失败后 window.Vue 为 undefined，
     * 业务包执行立即报错，#app 永远为空，表现为手机白屏。
     *
     * 策略：国内 npmmirror 为主源，jsdelivr、bootcdn 依次兜底；
     * 用“外链脚本 + 紧随其后的内联检测脚本”成对输出，保证严格的加载顺序，
     * 业务包（webpack 注入在 body 末尾）一定在所有基础库就绪后才执行。
     */
    window.__cdnTry = function (globalName, urls, idx) {
      if (window[globalName]) return true;
      if (idx >= urls.length) {
        (window.__CDN_FAILED__ = window.__CDN_FAILED__ || []).push(globalName);
        return false;
      }
      document.write('<script src="' + urls[idx] + '"><\/script>');
      document.write('<script>window.__cdnTry("' + globalName + '",' + JSON.stringify(urls) + ',' + (idx + 1) + ');<\/script>');
    };

    /* 白屏兜底：记录脚本错误，超时后若基础库仍未就绪则给出可见提示 */
    window.__lastError__ = '';
    window.addEventListener('error', function (e) {
      if (e && e.message) {
        window.__lastError__ = e.message + (e.filename ? ('（' + e.filename.split('/').pop() + ':' + e.lineno + '）') : '');
      }
    }, true);
    window.addEventListener('unhandledrejection', function (e) {
      var r = e && e.reason;
      window.__lastError__ = 'Promise异常: ' + (r && r.message ? r.message : String(r));
    });
    window.__showFatal = function (msg) {
      var mask = document.getElementById('fatal-mask');
      var loading = document.getElementById('app-loading');
      if (loading) loading.style.display = 'none';
      if (mask) {
        document.getElementById('fatal-msg').textContent = msg;
        mask.style.display = 'flex';
      }
    };
    setTimeout(function () {
      /* 注意：view-design 的 UMD 包在浏览器下挂载的全局名是小写 iview，不是 ViewUI */
      var required = ['Vue', 'ELEMENT', 'iview', 'echarts'];
      var labels = { Vue: 'Vue', ELEMENT: 'ElementUI', iview: 'ViewUI', echarts: 'ECharts' };
      var missing = required.filter(function (n) { return !window[n]; });
      if (missing.length) {
        window.__showFatal('静态资源加载失败，页面无法启动（缺少：' + missing.map(function (n) { return labels[n]; }).join('、') +
          '）。请切换 WiFi 或 4G/5G 网络后重试。' +
          (window.__lastError__ ? ('\n' + window.__lastError__) : ''));
        return;
      }
      /* 库齐全但 12 秒仍未挂载，通常是业务包/接口异常，也要让用户看到而不是白屏 */
      setTimeout(function () {
        var loading = document.getElementById('app-loading');
        if (loading && loading.parentNode) {
          window.__showFatal('页面加载超时，请点击重试。' +
            (window.__lastError__ ? ('\n' + window.__lastError__) : ''));
        }
      }, 12000);
    }, 8000);
  </script>
</head>
<body>
  <div id="app"><div id="app-loading"><div class="spin"></div><div>正在加载，请稍候…</div></div></div>

  <div id="fatal-mask">
    <div class="box">
      <div class="ico">!</div>
      <div class="msg" id="fatal-msg">静态资源加载失败，请重试。</div>
      <button type="button" onclick="location.reload()">重新加载</button>
    </div>
  </div>

  <script>
    (function () {
      /* 顺序不能变：Vue -> ElementUI -> ViewUI -> ECharts */
      var LIBS = [
        ['Vue', [
          'https://registry.npmmirror.com/vue/2.7.16/files/dist/vue.min.js',
          'https://cdn.jsdelivr.net/npm/vue@2.7.16/dist/vue.min.js',
          'https://cdn.bootcdn.net/ajax/libs/vue/2.7.16/vue.min.js'
        ]],
        ['ELEMENT', [
          'https://registry.npmmirror.com/element-ui/2.15.14/files/lib/index.js',
          'https://cdn.jsdelivr.net/npm/element-ui@2.15.14/lib/index.js',
          'https://cdn.bootcdn.net/ajax/libs/element-ui/2.15.14/index.js'
        ]],
        ['iview', [
          'https://registry.npmmirror.com/view-design/4.7.0/files/dist/iview.min.js',
          'https://cdn.jsdelivr.net/npm/view-design@4.7.0/dist/iview.min.js',
          'https://cdn.bootcdn.net/ajax/libs/view-design/4.7.0/iview.min.js'
        ]],
        ['echarts', [
          'https://registry.npmmirror.com/echarts/5.4.3/files/dist/echarts.min.js',
          'https://cdn.jsdelivr.net/npm/echarts@5.4.3/dist/echarts.min.js',
          'https://cdn.bootcdn.net/ajax/libs/echarts/5.4.3/echarts.min.js'
        ]]
      ];
      LIBS.forEach(function (lib) {
        var name = lib[0], urls = lib[1];
        document.write('<script src="' + urls[0] + '"><\/script>');
        document.write('<script>window.__cdnTry("' + name + '",' + JSON.stringify(urls) + ',1);<\/script>');
      });
    })();
  </script>
</body>
</html>