fix: 修复博客图片加载失败（掘金防盗链）

- 将《Git使用教学》中的掘金外链图片下载至 source/images/ 并替换为站内路径 - _config.yml 注入 no-referrer meta 作为兜底方案 - 新增 tools/download-juejin-images.js 批量下载/替换脚本
2026-07-08 21:52:22 +08:00
parent 1d8ce5a16c
commit b3f44d235a
57 changed files with 1389 additions and 5 deletions
@@ -0,0 +1,74 @@
+// 下载 Markdown 中的掘金外链图片到 source/images/，并替换链接为站内路径
+const fs = require('fs');
+const path = require('path');
+const https = require('https');
+const http = require('http');
+
+const ROOT = 'c:/Users/Administrator/Desktop/新建文件夹/blog';
+const MD = path.join(ROOT, 'source/_posts/Git使用教学.md');
+const OUT = path.join(ROOT, 'source/images');
+
+function download(url) {
+  return new Promise((resolve, reject) => {
+    const lib = url.startsWith('https') ? https : http;
+    const req = lib.get(url, { headers: { 'User-Agent': 'Mozilla/5.0' } }, (res) => {
+      // 跟随重定向
+      if (res.statusCode >= 300 && res.statusCode < 400 && res.headers.location) {
+        res.resume();
+        return download(new URL(res.headers.location, url).href).then(resolve, reject);
+      }
+      if (res.statusCode !== 200) {
+        res.resume();
+        return reject(new Error('HTTP ' + res.statusCode));
+      }
+      const chunks = [];
+      res.on('data', (c) => chunks.push(c));
+      res.on('end', () => resolve(Buffer.concat(chunks)));
+    });
+    req.on('error', reject);
+    req.setTimeout(30000, () => req.destroy(new Error('timeout')));
+  });
+}
+
+(async () => {
+  fs.mkdirSync(OUT, { recursive: true });
+  let content = fs.readFileSync(MD, 'utf8');
+
+  const re = /!\[[^\]]*\]\((https:\/\/p3-juejin\.byteimg\.com\/[^)\s]+)\)/g;
+  const map = {}; // url -> /images/xxx.webp
+  let m;
+  const tasks = [];
+
+  while ((m = re.exec(content)) !== null) {
+    const url = m[1];
+    if (map[url]) continue;
+    const seg = url.split('/').pop();
+    const hash = seg.split('~')[0];
+    if (!hash) {
+      console.log('跳过（无法解析文件名）: ' + url);
+      continue;
+    }
+    const file = hash + '.webp';
+    map[url] = '/images/' + file;
+    tasks.push(
+      download(url)
+        .then((buf) => {
+          fs.writeFileSync(path.join(OUT, file), buf);
+          console.log('[OK] ' + file + '  <-  ' + url);
+        })
+        .catch((e) => {
+          console.log('[FAIL] ' + url + '  ->  ' + e.message);
+          delete map[url];
+        })
+    );
+  }
+
+  await Promise.all(tasks);
+
+  for (const url in map) {
+    content = content.split(url).join(map[url]);
+  }
+  fs.writeFileSync(MD, content); // UTF-8 无 BOM
+
+  console.log('\n完成：处理 ' + Object.keys(map).length + ' 张图片');
+})();