jiangkai
/
fx-file-server


			
				
					
						
						
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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" />
  <title>OnlyOffice 预览</title>
  <style>
    html,body{height:100%;margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:#f5f7fa}
    .bar{padding:10px 14px;background:#111827;color:#fff;font-size:14px;word-break:break-all}
    .bar a{color:#93c5fd;text-decoration:none}
    .err{color:#fecaca}
    .ok{color:#86efac}
    .warn{color:#fde68a}
    #editor{height:calc(100% - 44px)}
  </style>
  <script src="/onlyoffice/web-apps/apps/api/documents/api.js"></script>
</head>
<body>
  <div class="bar" id="hint"></div>
  <div id="editor"></div>
  <script>
    const hintEl = document.getElementById("hint");
    const p = new URLSearchParams(location.search);
    const rawUrl = p.get("url") || "";
    const title = p.get("title") || (rawUrl ? rawUrl.split("/").pop() : "untitled.docx");
    const fileType = (p.get("type") || title.split(".").pop() || "docx").toLowerCase();

    function docType(ext){
      if(["xlsx","xls","csv","ods"].includes(ext)) return "cell";
      if(["pptx","ppt","odp"].includes(ext)) return "slide";
      return "word";
    }

    function stableKey(str){
      let h = 2166136261;
      for (const ch of str) {
        h ^= ch.codePointAt(0);
        h += (h << 1) + (h << 4) + (h << 7) + (h << 8) + (h << 24);
      }
      return (h >>> 0).toString(16);
    }

    function hasExt(name){ return /\.[^\/]+$/.test(name || ""); }

    function inferDirFromReferrer(){
      if(!document.referrer) return "";
      try {
        const r = new URL(document.referrer);
        let pth = decodeURIComponent(r.pathname || "");
        if (!pth.startsWith("/files/")) return "";
        let rel = pth.slice(7).replace(/^\/+|\/+$/g, "");
        if(!rel) return "";
        const arr = rel.split("/");
        if(arr.length && hasExt(arr[arr.length - 1])) arr.pop();
        return arr.join("/");
      } catch (e) {
        return "";
      }
    }

    function normalizeRawUrl(input, titleText) {
      try {
        const u = new URL(input, location.origin);
        let path = decodeURIComponent(u.pathname);
        const t = decodeURIComponent(titleText || "").replace(/^\/+/, "");

        const dup = path.match(/^(.*\/)([^\/]+\.[^\/]+)\/\2$/);
        if (dup) path = dup[1] + dup[2];

        const mFile = path.match(/^(\/raw\/files\/)([^\/]+\.[^\/]+)$/);
        if (mFile) {
          const base = mFile[2];
          let resolved = "";

          if (t.includes("/") && (t === base || t.endsWith("/" + base))) {
            resolved = t;
          }

          if (!resolved) {
            const refDir = inferDirFromReferrer();
            if (refDir) resolved = refDir + "/" + base;
          }

          if (resolved) path = mFile[1] + resolved;
        }

        u.pathname = path;
        return u.toString();
      } catch (e) {
        return input;
      }
    }

    if(!rawUrl){
      hintEl.innerHTML = '<span class="err">缺少参数: ?url=&lt;文件URL&gt;&type=&lt;扩展名&gt;&title=&lt;文件名&gt;</span>';
      throw new Error("missing file url");
    }

    const normalizedRawUrl = normalizeRawUrl(rawUrl, title);
    let fileUrl = normalizedRawUrl;
    try {
      fileUrl = encodeURI(decodeURIComponent(normalizedRawUrl));
    } catch (e) {
      fileUrl = encodeURI(normalizedRawUrl);
    }

    const nonce = `${Date.now()}-${Math.random().toString(16).slice(2,8)}`;
    const fileUrlWithNonce = fileUrl + (fileUrl.includes("?") ? "&" : "?") + `_v=${nonce}`;
    const docKey = `${stableKey(fileUrlWithNonce)}-${stableKey(title)}-${fileType}-${nonce}`.slice(0, 120);

    hintEl.innerHTML = `预览中: ${title} | <a href='${fileUrl}' target='_blank'>原文件</a> | <span class='warn'>正在检测文件可达性...</span>`;

    async function precheck(){
      try {
        const r = await fetch(fileUrlWithNonce, { method: "GET", cache: "no-store" });
        if (!r.ok) {
          hintEl.innerHTML = `预览中: ${title} | <a href='${fileUrl}' target='_blank'>原文件</a> | <span class='err'>源文件检测失败: HTTP ${r.status}</span>`;
          return false;
        }
        hintEl.innerHTML = `预览中: ${title} | <a href='${fileUrl}' target='_blank'>原文件</a> | <span class='ok'>源文件检测通过</span>`;
        return true;
      } catch (e) {
        hintEl.innerHTML = `预览中: ${title} | <a href='${fileUrl}' target='_blank'>原文件</a> | <span class='err'>源文件检测异常: ${String(e && e.message ? e.message : e)}</span>`;
        return false;
      }
    }

    function render(){
      try {
        new DocsAPI.DocEditor("editor", {
          documentType: docType(fileType),
          type: "desktop",
          width: "100%",
          height: "100%",
          document: {
            title: title,
            url: fileUrlWithNonce,
            fileType: fileType,
            key: docKey
          },
          editorConfig: {
            mode: "view",
            lang: "zh-CN",
            customization: { autosave: false, forcesave: false }
          },
          events: {
            onAppReady: function(){
              hintEl.innerHTML = `预览中: ${title} | <a href='${fileUrl}' target='_blank'>原文件</a> | <span class='ok'>编辑器已启动</span>`;
            },
            onDocumentReady: function(){
              hintEl.innerHTML = `预览中: ${title} | <a href='${fileUrl}' target='_blank'>原文件</a> | <span class='ok'>文档已加载</span>`;
            },
            onError: function(e){
              const code = e && e.data && e.data.errorCode;
              const desc = e && e.data && e.data.errorDescription;
              hintEl.innerHTML = `预览中: ${title} | <a href='${fileUrl}' target='_blank'>原文件</a> | <span class='err'>OnlyOffice错误: code=${code||"unknown"} ${desc||""}</span>`;
            },
            onWarning: function(e){
              const code = e && e.data && e.data.warningCode;
              const desc = e && e.data && e.data.warningDescription;
              hintEl.innerHTML = `预览中: ${title} | <a href='${fileUrl}' target='_blank'>原文件</a> | <span class='warn'>OnlyOffice警告: code=${code||"unknown"} ${desc||""}</span>`;
            }
          }
        });
      } catch (e) {
        hintEl.innerHTML = `<span class='err'>预览初始化失败: ${String(e && e.message ? e.message : e)}</span>`;
        throw e;
      }
    }

    precheck().then(render);
  </script>
</body>
</html>