fix cdn issue #45

Author: Nliver

src/components/common/LeafletMap.tsx

@@ -76,9 +76,9 @@ export default function LeafletMap({
     // 使用多个CDN源，优先国内可访问的CDN
     const iconSources = [
       {
-        iconRetinaUrl: 'https://cdn.bootcdn.net/ajax/libs/leaflet/1.9.4/images/marker-icon-2x.png',
-        iconUrl: 'https://cdn.bootcdn.net/ajax/libs/leaflet/1.9.4/images/marker-icon.png',
-        shadowUrl: 'https://cdn.bootcdn.net/ajax/libs/leaflet/1.9.4/images/marker-shadow.png',
+        iconRetinaUrl: 'https://s4.zstatic.net/ajax/libs/leaflet/1.9.4/images/marker-icon-2x.png',
+        iconUrl: 'https://s4.zstatic.net/ajax/libs/leaflet/1.9.4/images/marker-icon.png',
+        shadowUrl: 'https://s4.zstatic.net/ajax/libs/leaflet/1.9.4/images/marker-shadow.png',
       },
       {
         iconRetinaUrl: 'https://unpkg.com/leaflet@1.9.4/dist/images/marker-icon-2x.png',

src/pages/_document.tsx

@@ -27,9 +27,10 @@ export default function Document() {
         {/* Leaflet CSS - 优先使用国内CDN */}
         <link 
           rel="stylesheet" 
-          href="https://cdn.bootcdn.net/ajax/libs/leaflet/1.9.4/leaflet.css" 
-          integrity="sha384-BBQL4gKfA4GLjCgJ8c3VJ0B7+9Z8JkJPnTxDg4g6jKwD+UzFVmgE+pGvqQ+X5Qz2"
-          crossOrigin="anonymous"
+          href="https://s4.zstatic.net/ajax/libs/leaflet/1.9.4/leaflet.css" 
+          integrity="sha512-Zcn6bjR/8RZbLEpLIeOwNtzREBAJnUKESxces60Mpoj+2okopSAcSUIUOseddDm0cxnGQzxIR7vJgsLZbdLE3w==" 
+          crossOrigin="anonymous" 
+          referrerPolicy="no-referrer" 
         />
         {/* 备用CDN */}
         <link