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ylrz_his_scrm_java


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" />
  <title>正在加载中</title>
  <style>
    html, body { margin: 0; padding: 0; background: #fff; }
  </style>
</head>
<body>
  <script>
    /**
     * 空白页：抬头「正在加载中」，拿到跳转链接后 location.replace。
     * 调用约定（每种进入场景只打 1 次对应接口）：
     * - 首次进入无 openId → GET /mp/silent/authUrl，再跳转微信
     * - 微信回跳带 code → 只调 POST /mp/silent/resolve
     * - 再次进入已有 openId → 只调 POST /mp/silent/userInfo
     */
    var API_BASE = 'https://wx.jy.cc/apis';
    var APP_ID = 'wxe704b34112659eb1';
    var OPENID_KEY = 'mp_silent_openid';
    var BIZ_CACHE_KEY = 'mp_silent_biz_cache';
    var REQ_LOCK_KEY = 'mp_silent_req_lock';
    /** 同一次授权回跳若页面被加载两次，短时间内复用结果，避免 resolve + userInfo */
    var BIZ_CACHE_TTL_MS = 8000;

    var pageBooted = false;

    function qs(name) {
      var m = location.search.match(new RegExp('[?&]' + name + '=([^&]*)'));
      return m ? decodeURIComponent(m[1].replace(/\+/g, ' ')) : '';
    }
    function isWeChat() {
      return /MicroMessenger/i.test(navigator.userAgent || '');
    }
    function currentPageUrlWithoutQuery() {
      return location.origin + location.pathname;
    }
    function apiUrl(path) {
      var base = (API_BASE || '').replace(/\/$/, '');
      return base + path;
    }
    function normalizePath(pathname) {
      if (!pathname || pathname === '/') return '/';
      return pathname.replace(/\/$/, '');
    }
    function isSameAuthPage(url) {
      if (!url) return true;
      try {
        var u = new URL(url, location.href);
        return u.origin === location.origin
            && normalizePath(u.pathname) === normalizePath(location.pathname);
      } catch (e) {
        return false;
      }
    }
    function clearCodeFromUrl() {
      if (window.history && history.replaceState) {
        history.replaceState(null, '', location.pathname + (location.hash || ''));
      }
    }
    function finishOk(openId, jumpUrl) {
      clearCodeFromUrl();
      if (openId) {
        try { sessionStorage.setItem(OPENID_KEY, openId); } catch (e) {}
      }
      var url = (jumpUrl || '').replace(/^\s+|\s+$/g, '');
      if (url && !isSameAuthPage(url)) {
        location.replace(url);
      }
      // 无跳转链接：保持空白页，抬头仍为「正在加载中」
    }
    function saveBizCache(res) {
      try {
        sessionStorage.setItem(BIZ_CACHE_KEY, JSON.stringify({
          t: Date.now(),
          openId: res.openId || '',
          url: res.url || ''
        }));
      } catch (e) {}
    }
    function readBizCache(openId) {
      try {
        var raw = sessionStorage.getItem(BIZ_CACHE_KEY);
        if (!raw) return null;
        var o = JSON.parse(raw);
        if (!o || o.openId !== openId) return null;
        if (Date.now() - (o.t || 0) > BIZ_CACHE_TTL_MS) return null;
        return o;
      } catch (e) {
        return null;
      }
    }
    /** 页面级 + 短时存储锁，防止并发/双加载重复请求 */
    function tryLockRequest(kind) {
      if (window.__mpSilentReqing) {
        return false;
      }
      try {
        var now = Date.now();
        var raw = sessionStorage.getItem(REQ_LOCK_KEY);
        if (raw) {
          var o = JSON.parse(raw);
          if (o && o.kind === kind && now - (o.t || 0) < 3000) {
            return false;
          }
        }
        sessionStorage.setItem(REQ_LOCK_KEY, JSON.stringify({ kind: kind, t: now }));
      } catch (e) {}
      window.__mpSilentReqing = true;
      return true;
    }
    function unlockRequest() {
      window.__mpSilentReqing = false;
    }
    function applyBizRes(res) {
      if (!res || res.code !== 200 || !res.openId) {
        unlockRequest();
        return;
      }
      saveBizCache(res);
      unlockRequest();
      finishOk(res.openId, res.url || '');
    }
    function getJson(url) {
      return fetch(url, { method: 'GET', credentials: 'omit' }).then(function (res) {
        return res.json();
      });
    }
    function postJson(url, body) {
      return fetch(url, {
        method: 'POST',
        credentials: 'omit',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(body || {})
      }).then(function (res) {
        return res.json();
      });
    }
    /** 调 authUrl 获取授权链接后跳转微信 */
    function goWechatOAuth(appId, state) {
      if (!tryLockRequest('authUrl')) {
        return;
      }
      var redirectUri = currentPageUrlWithoutQuery();
      var authQuery = 'redirectUri=' + encodeURIComponent(redirectUri);
      if (appId) authQuery += '&appId=' + encodeURIComponent(appId);
      if (state) authQuery += '&state=' + encodeURIComponent(state);
      getJson(apiUrl('/mp/silent/authUrl?' + authQuery)).then(function (res) {
        unlockRequest();
        if (!res || res.code !== 200 || !res.oauthUrl) {
          return;
        }
        location.replace(res.oauthUrl);
      }).catch(function () {
        unlockRequest();
      });
    }
    /** 只调 userInfo 一次 */
    function loadUserInfoOnce(openId, state) {
      var cached = readBizCache(openId);
      if (cached) {
        finishOk(cached.openId, cached.url);
        return;
      }
      if (!tryLockRequest('userInfo')) {
        return;
      }
      postJson(apiUrl('/mp/silent/userInfo'), {
        openId: openId,
        state: state || undefined
      }).then(applyBizRes).catch(function () {
        unlockRequest();
      });
    }
    /** 只调 resolve 一次 */
    function resolveOnce(code, appId, state) {
      var codeLockKey = 'mp_silent_code_' + code;
      try {
        if (sessionStorage.getItem(codeLockKey) === 'done') {
          clearCodeFromUrl();
          var openId = '';
          try { openId = sessionStorage.getItem(OPENID_KEY) || ''; } catch (e) {}
          if (openId) {
            loadUserInfoOnce(openId, state);
          }
          return;
        }
        if (sessionStorage.getItem(codeLockKey) === 'pending') {
          return;
        }
        sessionStorage.setItem(codeLockKey, 'pending');
      } catch (e) {}

      if (!tryLockRequest('resolve')) {
        return;
      }
      postJson(apiUrl('/mp/silent/resolve'), {
        code: code,
        appId: appId || undefined,
        state: state || undefined
      }).then(function (res) {
        if (!res || res.code !== 200 || !res.openId) {
          try { sessionStorage.removeItem(codeLockKey); } catch (e) {}
          unlockRequest();
          return;
        }
        try { sessionStorage.setItem(codeLockKey, 'done'); } catch (e) {}
        applyBizRes(res);
      }).catch(function () {
        try { sessionStorage.removeItem(codeLockKey); } catch (e2) {}
        unlockRequest();
      });
    }

    function start() {
      if (pageBooted) {
        return;
      }
      pageBooted = true;
      document.title = '正在加载中';

      if (!isWeChat()) {
        return;
      }

      var appId = qs('appId') || APP_ID;
      var state = qs('state') || '';
      var code = qs('code');

      if (code) {
        resolveOnce(code, appId, state);
        return;
      }

      var cachedOpenId = '';
      try { cachedOpenId = sessionStorage.getItem(OPENID_KEY) || ''; } catch (e) {}
      if (cachedOpenId && qs('force') !== '1') {
        loadUserInfoOnce(cachedOpenId, state);
        return;
      }

      goWechatOAuth(appId, state);
    }

    start();
  </script>
</body>
</html>