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897 lines
37 KiB
HTML
897 lines
37 KiB
HTML
<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width">
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<meta name="theme-color" content="#222"><meta name="generator" content="Hexo 6.3.0">
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<link rel="apple-touch-icon" sizes="180x180" href="/images/apple-touch-icon-next.png">
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<link rel="icon" type="image/png" sizes="32x32" href="/images/favicon-32x32-next.png">
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<link rel="icon" type="image/png" sizes="16x16" href="/images/favicon-16x16-next.png">
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<link rel="mask-icon" href="/images/logo.svg" color="#222">
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<link rel="stylesheet" href="/css/main.css">
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/7.0.0/css/all.min.css" integrity="sha256-VHqXKFhhMxcpubYf9xiWdCiojEbY9NexQ4jh8AxbvcM=" crossorigin="anonymous">
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<script class="next-config" data-name="main" type="application/json">{"hostname":"toozhao.com","root":"/","images":"/images","scheme":"Muse","darkmode":false,"version":"8.28.0","exturl":false,"sidebar":{"position":"left","width_expanded":320,"width_dual_column":240,"display":"post","padding":18,"offset":12,"b2t":true,"scrollpercent":true},"hljswrap":true,"codeblock":{"theme":{"light":"default","dark":"stackoverflow-dark"},"prism":{"light":"prism","dark":"prism-dark"},"copy_button":{"enable":true,"style":"mac"},"fold":{"enable":false,"height":500},"language":false},"bookmark":{"enable":true,"color":"#222","save":"auto"},"mediumzoom":true,"lazyload":false,"pangu":false,"comments":{"style":"tabs","active":null,"storage":true,"lazyload":false,"nav":null},"stickytabs":false,"motion":{"enable":false,"async":false,"duration":200,"transition":{"menu_item":"fadeInDown","post_block":"fadeIn","post_header":"fadeInDown","post_body":"fadeInDown","coll_header":"fadeInLeft","sidebar":"fadeInUp"}},"prism":false,"i18n":{"placeholder":"搜索...","empty":"没有找到任何搜索结果：${query}","hits_time":"找到 ${hits} 个搜索结果（用时 ${time} 毫秒）","hits":"找到 ${hits} 个搜索结果"},"path":"/search.xml","localsearch":{"enable":true,"top_n_per_article":5,"unescape":false,"preload":false,"trigger":"auto"}}</script><script src="/js/config.js" defer></script>
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<meta name="description" content="跨域问题在我们开发web应用的时候经常遇到，但一直没有很好的解决方案。目前可能大家认为相对比较好使的就是——JSONP技术。不过这样前台通常需要告诉后台需要返回的函数名称，而后台需要向前台前台返回的则是一个可以执行的代码段。这样在后台处理的时候就相对麻烦一些。 其实在新的W3C标准中，我们只需要在服务器后端添加一句话即可以比较好的解决跨域问题。如java servlet中： 1response.s">
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<meta property="og:type" content="article">
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<meta property="og:title" content="Java CORS实现Ajax跨域请求">
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<meta property="og:url" content="https://toozhao.com/2012/08/22/java-cors-cross-domain-request/">
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<meta property="og:site_name" content="大染志">
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<meta property="og:description" content="跨域问题在我们开发web应用的时候经常遇到，但一直没有很好的解决方案。目前可能大家认为相对比较好使的就是——JSONP技术。不过这样前台通常需要告诉后台需要返回的函数名称，而后台需要向前台前台返回的则是一个可以执行的代码段。这样在后台处理的时候就相对麻烦一些。 其实在新的W3C标准中，我们只需要在服务器后端添加一句话即可以比较好的解决跨域问题。如java servlet中： 1response.s">
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<meta property="og:locale" content="zh_CN">
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<meta property="og:image" content="https://toozhao.com/images/2012/08/aa1.png">
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<meta property="article:published_time" content="2012-08-22T14:00:00.000Z">
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<meta property="article:modified_time" content="2026-08-11T12:22:51.368Z">
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<meta property="article:author" content="Junv">
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<meta property="article:tag" content="java">
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<meta property="article:tag" content="ajax">
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<meta property="article:tag" content="http">
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<meta property="article:tag" content="跨域">
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<meta name="twitter:card" content="summary">
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<meta name="twitter:image" content="https://toozhao.com/images/2012/08/aa1.png">
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<link rel="canonical" href="https://toozhao.com/2012/08/22/java-cors-cross-domain-request/">
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<script class="next-config" data-name="page" type="application/json">{"sidebar":"","isHome":false,"isPost":true,"lang":"zh-CN","comments":true,"permalink":"https://toozhao.com/2012/08/22/java-cors-cross-domain-request/","path":"2012/08/22/java-cors-cross-domain-request/","title":"Java CORS实现Ajax跨域请求"}</script>
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<script class="next-config" data-name="calendar" type="application/json">""</script>
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<title>Java CORS实现Ajax跨域请求 | 大染志</title>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/animejs/3.2.1/anime.min.js" integrity="sha256-XL2inqUJaslATFnHdJOi9GfQ60on8Wx1C2H8DYiN1xY=" crossorigin="anonymous" defer></script>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/medium-zoom/1.1.0/medium-zoom.min.js" integrity="sha256-ZgMyDAIYDYGxbcpJcfUnYwNevG/xi9OHKaR/8GK+jWc=" crossorigin="anonymous" defer></script>
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<script src="/js/utils.js" defer></script><script src="/js/sidebar.js" defer></script><script src="/js/next-boot.js" defer></script><script src="/js/bookmark.js" defer></script>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/hexo-generator-searchdb/1.5.0/search.js" integrity="sha256-xFC6PJ82SL9b3WkGjFavNiA9gm5z6UBxWPiu4CYjptg=" crossorigin="anonymous" defer></script>
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<script src="/js/third-party/search/local-search.js" defer></script>
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<style>
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/* =========================================================
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Toozhao blog custom styles (injected via head.njk)
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阅读体验优化 — 微信读书风格
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========================================================= */
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html { scroll-behavior: smooth; }
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/* 主内容阅读宽度 */
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.post-block, .posts-expand .post-block {
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.post-title {
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font-size: 1.7em;
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font-weight: 700;
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letter-spacing: 0.01em;
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}
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.post-meta { color: #999; font-size: 0.9em; }
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.post-body {
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font-size: 1.05em;
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line-height: 1.9;
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letter-spacing: 0.02em;
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color: #333;
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}
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.post-body p {
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margin: 1.1em 0;
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text-align: justify;
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text-justify: inter-ideograph;
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}
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.post-body h1, .post-body h2, .post-body h3, .post-body h4, .post-body h5, .post-body h6 {
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line-height: 1.4;
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margin-top: 1.6em;
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margin-bottom: 0.8em;
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font-weight: 600;
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color: #222;
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.post-body h2::before, .post-body h3::before, .post-body h4::before {
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content: '';
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display: inline-block;
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width: 4px;
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height: 0.9em;
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background: #4a90d9;
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border-radius: 2px;
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margin-right: 10px;
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vertical-align: -0.08em;
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}
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.post-body img {
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border-radius: 8px;
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box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
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margin: 0.6em auto;
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display: block;
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max-width: 100%;
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}
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.post-body blockquote {
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border-left: 4px solid #4a90d9;
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background: rgba(74, 144, 217, 0.06);
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margin: 1.4em 0;
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padding: 0.8em 1.2em;
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border-radius: 0 8px 8px 0;
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color: #555;
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}
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.post-body blockquote p { margin: 0.4em 0; }
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.post-body a {
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color: #2d6cdf;
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border-bottom: 1px solid rgba(45, 108, 223, 0.3);
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transition: color 0.2s, border-color 0.2s;
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}
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.post-body a:hover { color: #1a4fae; border-bottom-color: #1a4fae; }
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.post-body code {
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background: rgba(0, 0, 0, 0.05);
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border-radius: 4px;
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padding: 2px 6px;
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font-size: 0.9em;
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color: #c7254e;
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}
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.post-body table {
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border-collapse: collapse;
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margin: 1.2em auto;
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font-size: 0.95em;
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}
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.post-body table th, .post-body table td {
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border: 1px solid #ddd;
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padding: 8px 14px;
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}
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.post-body table th { background: #f5f7fa; font-weight: 600; }
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.post-body table tr:nth-child(even) { background: #fafbfc; }
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.post-body ul, .post-body ol { padding-left: 1.6em; margin: 0.8em 0; }
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.post-body ul li, .post-body ol li { margin: 0.35em 0; }
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.post-body hr {
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border: none;
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border-top: 1px dashed #ccc;
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margin: 2em auto;
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width: 60%;
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}
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/* 暗色模式（跟随系统，不依赖 NexT darkmode class） */
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@media (prefers-color-scheme: dark) {
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body { background: #1b1f24; color: #c8cdd3; }
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.post-body { color: #c8cdd3; }
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.post-body h1, .post-body h2, .post-body h3, .post-body h4, .post-body h5, .post-body h6 { color: #e8eaed; }
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.post-body blockquote { background: rgba(74, 144, 217, 0.1); color: #9aa5b1; }
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.post-body code { background: rgba(255, 255, 255, 0.1); color: #e88388; }
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.post-body table th, .post-body table td { border-color: #3a3f45; }
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.post-body table th { background: #2d3238; }
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.post-body table tr:nth-child(even) { background: #262a2f; }
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.post-meta { color: #777; }
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}
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::selection { background: rgba(74, 144, 217, 0.25); }
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/* =========================================================
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阅读设置（Aa 悬浮按钮 + 面板）— 参考 Links Reading settings
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========================================================= */
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/* 悬浮按钮：左下，与 sidebar-toggle 排成一列 */
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.reading-toggle {
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position: fixed;
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left: 24px;
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bottom: 108px;
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z-index: 1000;
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width: 34px;
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height: 34px;
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border-radius: 50%;
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background: rgba(0, 0, 0, 0.65);
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color: #fff;
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font-family: Georgia, "Times New Roman", serif;
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font-size: 16px;
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font-weight: 700;
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font-style: italic;
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display: flex;
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align-items: center;
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justify-content: center;
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cursor: pointer;
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user-select: none;
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border: none;
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box-shadow: 0 2px 10px rgba(0, 0, 0, 0.28);
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transition: background 0.2s, transform 0.2s;
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}
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.reading-toggle:hover { background: #4a90d9; transform: scale(1.1); }
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.reading-toggle.active { background: #4a90d9; }
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/* 设置面板 */
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.reading-panel {
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position: fixed;
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left: 68px;
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bottom: 108px;
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z-index: 1001;
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width: 268px;
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background: #fff;
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border-radius: 14px;
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box-shadow: 0 14px 44px rgba(0, 0, 0, 0.2);
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padding: 16px 18px 14px;
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font-size: 13px;
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color: #333;
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display: none;
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transform-origin: bottom left;
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animation: rpIn 0.18s ease;
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}
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.reading-panel.open { display: block; }
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@keyframes rpIn {
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from { opacity: 0; transform: translateY(8px) scale(0.96); }
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to { opacity: 1; transform: none; }
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}
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.reading-panel h4 {
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margin: 0 0 8px;
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font-size: 11px;
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font-weight: 700;
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letter-spacing: 0.1em;
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color: #9aa0a8;
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text-transform: uppercase;
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}
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.reading-panel .rp-row { margin-bottom: 15px; }
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.reading-panel .rp-row:last-of-type { margin-bottom: 10px; }
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/* 主题色 swatch */
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.rp-themes { display: flex; gap: 8px; }
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.rp-themes .sw {
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flex: 1;
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border: 2px solid transparent;
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border-radius: 10px;
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padding: 6px 4px 5px;
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cursor: pointer;
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background: none;
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font-size: 12px;
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color: #666;
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display: flex;
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flex-direction: column;
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align-items: center;
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gap: 4px;
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transition: border-color 0.15s;
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}
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.rp-themes .sw span {
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display: block;
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width: 30px;
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height: 22px;
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border-radius: 6px;
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border: 1px solid rgba(0, 0, 0, 0.12);
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}
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.rp-themes .sw.active { border-color: #4a90d9; color: #4a90d9; font-weight: 600; }
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.sw-light span { background: #ffffff; }
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.sw-paper span { background: #f7f0e4; }
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.sw-green span { background: #e2efe4; }
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.sw-night span { background: #1b1f24; }
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/* 字体选项 */
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.rp-fonts { display: flex; flex-wrap: wrap; gap: 6px; }
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.rp-fonts button {
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flex: 1 1 40%;
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border: 1px solid #e2e5ea;
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background: #f8f9fb;
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border-radius: 8px;
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padding: 6px 4px;
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||
font-size: 12.5px;
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color: #444;
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cursor: pointer;
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transition: all 0.15s;
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}
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.rp-fonts button.active { background: #eaf2fd; border-color: #4a90d9; color: #2d6cdf; font-weight: 600; }
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.rp-fonts button:nth-child(n+5) { flex-basis: 100%; }
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/* 字号 */
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.rp-size { display: flex; align-items: center; gap: 10px; }
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.rp-size button {
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width: 36px;
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height: 30px;
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border-radius: 8px;
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border: 1px solid #e2e5ea;
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background: #f8f9fb;
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font-size: 14px;
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color: #444;
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cursor: pointer;
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transition: all 0.15s;
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||
}
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||
.rp-size button:hover { background: #eaf2fd; border-color: #4a90d9; color: #2d6cdf; }
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||
.rp-size-val {
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||
flex: 1;
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||
text-align: center;
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||
font-size: 13.5px;
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||
font-weight: 600;
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color: #555;
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||
background: #f8f9fb;
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border-radius: 8px;
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padding: 5px 0;
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||
}
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||
|
||
/* 行距 */
|
||
.rp-spacing { display: flex; gap: 6px; }
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||
.rp-spacing button {
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flex: 1;
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border: 1px solid #e2e5ea;
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background: #f8f9fb;
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||
border-radius: 8px;
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||
padding: 6px 0;
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font-size: 12.5px;
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color: #444;
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cursor: pointer;
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transition: all 0.15s;
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||
}
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||
.rp-spacing button.active { background: #eaf2fd; border-color: #4a90d9; color: #2d6cdf; font-weight: 600; }
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|
||
/* 重置 */
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||
.rp-reset {
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width: 100%;
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border: none;
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||
background: none;
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||
color: #9aa0a8;
|
||
font-size: 12.5px;
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||
padding: 8px 0 2px;
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||
cursor: pointer;
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||
border-top: 1px solid #eef0f3;
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||
margin-top: 2px;
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transition: color 0.15s;
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||
}
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||
.rp-reset:hover { color: #4a90d9; }
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||
|
||
/* ---- 阅读主题应用 ---- */
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||
body[data-rtheme="paper"] { background: #f7f0e4 !important; }
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||
body[data-rtheme="paper"] .post-body { color: #4a4238; }
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||
body[data-rtheme="paper"] .post-body h1, body[data-rtheme="paper"] .post-body h2,
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||
body[data-rtheme="paper"] .post-body h3, body[data-rtheme="paper"] .post-body h4,
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body[data-rtheme="paper"] .post-body h5, body[data-rtheme="paper"] .post-body h6 { color: #3a332b; }
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||
body[data-rtheme="paper"] .post-body a { color: #8a5a2b; border-bottom-color: rgba(138, 90, 43, 0.3); }
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body[data-rtheme="paper"] .post-body a:hover { color: #6b4420; }
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body[data-rtheme="paper"] .post-body blockquote { background: rgba(138, 90, 43, 0.07); color: #6b5d4a; }
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body[data-rtheme="paper"] .post-body code { background: rgba(0, 0, 0, 0.06); color: #8a4a3a; }
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body[data-rtheme="paper"] .post-body table th { background: #efe7d5; }
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body[data-rtheme="paper"] .post-body table tr:nth-child(even) { background: #f4ede0; }
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body[data-rtheme="paper"] .reading-panel { background: #fdfaf3; color: #4a4238; }
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body[data-rtheme="green"] { background: #e2efe4 !important; }
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body[data-rtheme="green"] .post-body { color: #2f4a36; }
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body[data-rtheme="green"] .post-body h1, body[data-rtheme="green"] .post-body h2,
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body[data-rtheme="green"] .post-body h3, body[data-rtheme="green"] .post-body h4,
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body[data-rtheme="green"] .post-body h5, body[data-rtheme="green"] .post-body h6 { color: #23402c; }
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body[data-rtheme="green"] .post-body a { color: #1d6b3c; border-bottom-color: rgba(29, 107, 60, 0.3); }
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body[data-rtheme="green"] .post-body a:hover { color: #14522d; }
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body[data-rtheme="green"] .post-body blockquote { background: rgba(29, 107, 60, 0.08); color: #41604c; }
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body[data-rtheme="green"] .post-body code { background: rgba(0, 0, 0, 0.05); color: #1d6b3c; }
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body[data-rtheme="green"] .post-body table th { background: #d4e8d8; }
|
||
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body[data-rtheme="night"] { background: #1b1f24 !important; }
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body[data-rtheme="night"] .post-body { color: #c8cdd3; }
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body[data-rtheme="night"] .post-body h1, body[data-rtheme="night"] .post-body h2,
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body[data-rtheme="night"] .post-body h3, body[data-rtheme="night"] .post-body h4,
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body[data-rtheme="night"] .post-body h5, body[data-rtheme="night"] .post-body h6 { color: #e8eaed; }
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body[data-rtheme="night"] .post-body table th, body[data-rtheme="night"] .post-body table td { border-color: #3a3f45; }
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body[data-rtheme="night"] .post-body table th { background: #2d3238; }
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body[data-rtheme="night"] .post-body table tr:nth-child(even) { background: #262a2f; }
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body[data-rtheme="night"] .reading-toggle { background: rgba(255, 255, 255, 0.14); }
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body[data-rtheme="night"] .reading-panel { background: #23282e; color: #c8cdd3; }
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body[data-rtheme="night"] .reading-panel h4 { color: #7a828c; }
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body[data-rtheme="night"] .rp-fonts button, body[data-rtheme="night"] .rp-size button,
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body[data-rtheme="night"] .rp-spacing button { background: #2d333a; border-color: #3a414a; color: #c8cdd3; }
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/* 移动端：按钮缩小、面板右移防溢出 */
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@media (max-width: 600px) {
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.reading-toggle { left: 16px; bottom: 96px; width: 32px; height: 32px; }
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Java CORS实现Ajax跨域请求
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<time title="创建时间：2012-08-23 00:00:00" itemprop="dateCreated datePublished" datetime="2012-08-23T00:00:00+10:00">2012-08-23</time>
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<span class="post-meta-item-text">更新于</span>
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<time title="修改时间：2026-08-11 22:22:51" itemprop="dateModified" datetime="2026-08-11T22:22:51+10:00">2026-08-11</time>
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||
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<div class="post-body" itemprop="articleBody"><p>跨域问题在我们开发web应用的时候经常遇到，但一直没有很好的解决方案。目前可能大家认为相对比较好使的就是——JSONP技术。不过这样前台通常需要告诉后台需要返回的函数名称，而后台需要向前台前台返回的则是一个可以执行的代码段。这样在后台处理的时候就相对麻烦一些。</p>
|
||
<p>其实在新的W3C标准中，我们只需要在服务器后端添加一句话即可以比较好的解决跨域问题。如java servlet中：</p>
|
||
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">response.setHeader(<span class="string">"Access-Control-Allow-Origin"</span>,<span class="string">"http://toozhao.com"</span>);</span><br></pre></td></tr></table></figure>
|
||
|
||
<p>这段代码的意思就是，允许来自toozhao.com的跨域HTTP请求，当然我们也可以使用通配符 “*”,这样任意的请求都可以访问这个地址了，而不会出现跨域的问题。</p>
|
||
<p>不过据其他文档中介绍，这样做是不安全的。因为这样服务器不能访问document.cookie 对象。不知道请求者的相关信息，而微软的介绍文档中说到：</p>
|
||
<blockquote>
|
||
<p><strong>安全警报</strong> 为了保护用户数据，跨域请求是匿名的，这意味着服务器无法轻松找出正在请求数据的用户。 因此，只应请求和响应不属于敏感信息或个人身份识别信息的跨域数据。</p>
|
||
</blockquote>
|
||
<p>因此为了安全，我们只应该向我们能保证其安全的站点提供Access-Control-Allow-Origin，即（CORS）。或者对可以公开的数据采用该种方式。</p>
|
||
<p>我个人认为在下面的情景中，比较适合采用这种跨域处理技术：</p>
|
||
<p><a href="/images/2012/08/aa1.png"><img src="/images/2012/08/aa1.png" title="aa"></a></p>
|
||
<p>此外，CORS还有一些其他属性可以设置：</p>
|
||
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">Access-Control-Allow-Origin: http://www.toozhao.com //设置允许跨域的地址</span><br><span class="line">Access-Control-Allow-Methods: POST, GET //设置跨域允许的方法</span><br><span class="line">Access-Control-Allow-Headers: NCZ //设置跨域允许的头部信息</span><br><span class="line">Access-Control-Max-Age: 1728000 //设置跨域允许的最大时间</span><br></pre></td></tr></table></figure>
|
||
|
||
<p>好了有了上面的这些参数，只要我们在java 中可以获取到HttpServletResponse 对象，即可以设置属性。被允许的前台就可以使用一般的ajax调用了。如jquery：</p>
|
||
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line">$.ajax({</span><br><span class="line"></span><br><span class="line">url: 'http://toozhao.com/test/xxx',</span><br><span class="line"></span><br><span class="line">method: 'GET'，</span><br><span class="line"></span><br><span class="line">success: function(msg){</span><br><span class="line"></span><br><span class="line">console.log(msg);</span><br><span class="line"></span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">});</span><br></pre></td></tr></table></figure>
|
||
|
||
<p>参考文档：<br><a target="_blank" rel="noopener" href="http://huaidan.org/archives/2729.html">http://huaidan.org/archives/2729.html</a><br><a target="_blank" rel="noopener" href="http://msdn.microsoft.com/zh-cn/library/dd573303(v=vs.85).aspx">http://msdn.microsoft.com/zh-cn/library/dd573303(v=vs.85).aspx</a></p>
|
||
<p>注：已修正图片中B系统URL错误。</p>
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<strong>本文作者： </strong>Junv
|
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|
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<strong>本文链接：</strong>
|
||
<a href="https://toozhao.com/2012/08/22/java-cors-cross-domain-request/" title="Java CORS实现Ajax跨域请求">https://toozhao.com/2012/08/22/java-cors-cross-domain-request/</a>
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<a href="/tags/java/" rel="tag"># java</a>
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<a href="/tags/ajax/" rel="tag"># ajax</a>
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<a href="/tags/http/" rel="tag"># http</a>
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<a href="/tags/%E8%B7%A8%E5%9F%9F/" rel="tag"># 跨域</a>
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/* =========================================================
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阅读设置面板（Aa 按钮）— 参考 Links Reading settings
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支持：背景主题 / 字体类型 / 字号 / 行距 / 重置，localStorage 记忆
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========================================================= */
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|
||
sans: '"Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", "PingFang SC", "WenQuanYi Micro Hei", sans-serif',
|
||
kai: '"KaiTi", "STKaiti", "Kaiti SC", "AR PL UKai CN", serif',
|
||
mono: 'SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace'
|
||
};
|
||
var THEMES = { light: '明亮', paper: '纸感', green: '护眼', night: '夜间' };
|
||
var SPACING = {
|
||
compact: { label: '紧凑', lh: 1.6 },
|
||
cozy: { label: '舒适', lh: 1.9 },
|
||
relaxed: { label: '宽松', lh: 2.3 }
|
||
};
|
||
|
||
function loadState() {
|
||
try {
|
||
var raw = localStorage.getItem(LS_KEY);
|
||
if (!raw) return;
|
||
var s = JSON.parse(raw);
|
||
if (THEMES[s.theme]) state.theme = s.theme;
|
||
if (FONTS.hasOwnProperty(s.font)) state.font = s.font;
|
||
if (typeof s.size === 'number' && s.size >= 0.8 && s.size <= 1.5) state.size = s.size;
|
||
if (SPACING[s.spacing]) state.spacing = s.spacing;
|
||
} catch (e) { /* ignore */ }
|
||
}
|
||
|
||
function saveState() {
|
||
try { localStorage.setItem(LS_KEY, JSON.stringify(state)); } catch (e) { /* ignore */ }
|
||
}
|
||
|
||
function buildUI() {
|
||
if (document.getElementById('reading-toggle')) return;
|
||
|
||
var toggle = document.createElement('button');
|
||
toggle.id = 'reading-toggle';
|
||
toggle.className = 'reading-toggle';
|
||
toggle.title = '阅读设置';
|
||
toggle.textContent = 'Aa';
|
||
document.body.appendChild(toggle);
|
||
|
||
var panel = document.createElement('div');
|
||
panel.id = 'reading-panel';
|
||
panel.className = 'reading-panel';
|
||
|
||
// 主题（swatch 全部为硬编码静态 HTML，无用户输入，安全）
|
||
var rowT = document.createElement('div');
|
||
rowT.className = 'rp-row';
|
||
rowT.innerHTML = '<h4>主题</h4><div class="rp-themes">' +
|
||
['light', 'paper', 'green', 'night'].map(function (t) {
|
||
return '<button class="sw sw-' + t + '" data-theme="' + t + '" title="' + THEMES[t] + '"><span></span>' + THEMES[t] + '</button>';
|
||
}).join('') + '</div>';
|
||
|
||
var rowF = document.createElement('div');
|
||
rowF.className = 'rp-row';
|
||
rowF.innerHTML = '<h4>字体</h4><div class="rp-fonts">' +
|
||
['system', 'serif', 'sans', 'kai', 'mono'].map(function (f) {
|
||
var label = { system: '系统', serif: '宋体', sans: '黑体', kai: '楷体', mono: '等宽' }[f];
|
||
return '<button data-font="' + f + '">' + label + '</button>';
|
||
}).join('') + '</div>';
|
||
|
||
var rowS = document.createElement('div');
|
||
rowS.className = 'rp-row';
|
||
rowS.innerHTML = '<h4>字号</h4><div class="rp-size">' +
|
||
'<button class="rp-minus" title="减小">A−</button><span class="rp-size-val">17px</span><button class="rp-plus" title="增大">A+</button></div>';
|
||
|
||
var rowSp = document.createElement('div');
|
||
rowSp.className = 'rp-row';
|
||
rowSp.innerHTML = '<h4>行距</h4><div class="rp-spacing">' +
|
||
['compact', 'cozy', 'relaxed'].map(function (s) {
|
||
return '<button data-spacing="' + s + '">' + SPACING[s].label + '</button>';
|
||
}).join('') + '</div>';
|
||
|
||
var reset = document.createElement('button');
|
||
reset.className = 'rp-reset';
|
||
reset.textContent = '↺ 恢复默认';
|
||
reset.addEventListener('click', function () {
|
||
state = { theme: 'light', font: 'system', size: 1.05, spacing: 'cozy' };
|
||
saveState();
|
||
apply();
|
||
render();
|
||
});
|
||
|
||
panel.appendChild(rowT);
|
||
panel.appendChild(rowF);
|
||
panel.appendChild(rowS);
|
||
panel.appendChild(rowSp);
|
||
panel.appendChild(reset);
|
||
document.body.appendChild(panel);
|
||
|
||
toggle.addEventListener('click', function (e) {
|
||
e.stopPropagation();
|
||
panel.classList.toggle('open');
|
||
toggle.classList.toggle('active', panel.classList.contains('open'));
|
||
});
|
||
panel.addEventListener('click', function (e) { e.stopPropagation(); });
|
||
|
||
panel.querySelectorAll('.sw').forEach(function (b) {
|
||
b.addEventListener('click', function () { state.theme = b.dataset.theme; saveState(); apply(); render(); });
|
||
});
|
||
panel.querySelectorAll('.rp-fonts button').forEach(function (b) {
|
||
b.addEventListener('click', function () { state.font = b.dataset.font; saveState(); apply(); render(); });
|
||
});
|
||
panel.querySelectorAll('.rp-spacing button').forEach(function (b) {
|
||
b.addEventListener('click', function () { state.spacing = b.dataset.spacing; saveState(); apply(); render(); });
|
||
});
|
||
panel.querySelector('.rp-minus').addEventListener('click', function () {
|
||
state.size = Math.max(0.8, +(state.size - 0.05).toFixed(2)); saveState(); apply(); render();
|
||
});
|
||
panel.querySelector('.rp-plus').addEventListener('click', function () {
|
||
state.size = Math.min(1.5, +(state.size + 0.05).toFixed(2)); saveState(); apply(); render();
|
||
});
|
||
|
||
document.addEventListener('click', function (e) {
|
||
if (panel.classList.contains('open') && !panel.contains(e.target) && e.target !== toggle) {
|
||
panel.classList.remove('open');
|
||
toggle.classList.remove('active');
|
||
}
|
||
});
|
||
document.addEventListener('keydown', function (e) {
|
||
if (e.key === 'Escape' && panel.classList.contains('open')) {
|
||
panel.classList.remove('open');
|
||
toggle.classList.remove('active');
|
||
}
|
||
});
|
||
}
|
||
|
||
function apply() {
|
||
var body = document.body;
|
||
var pb = document.querySelector('.post-body');
|
||
|
||
body.setAttribute('data-rtheme', state.theme);
|
||
if (pb) {
|
||
pb.style.fontFamily = FONTS[state.font] || '';
|
||
pb.style.fontSize = state.size + 'em';
|
||
pb.style.lineHeight = SPACING[state.spacing].lh;
|
||
}
|
||
}
|
||
|
||
function render() {
|
||
var panel = document.getElementById('reading-panel');
|
||
if (!panel) return;
|
||
|
||
panel.querySelectorAll('.sw').forEach(function (b) {
|
||
b.classList.toggle('active', b.dataset.theme === state.theme);
|
||
});
|
||
panel.querySelectorAll('.rp-fonts button').forEach(function (b) {
|
||
b.classList.toggle('active', b.dataset.font === state.font);
|
||
});
|
||
panel.querySelectorAll('.rp-spacing button').forEach(function (b) {
|
||
b.classList.toggle('active', b.dataset.spacing === state.spacing);
|
||
});
|
||
var val = panel.querySelector('.rp-size-val');
|
||
if (val) val.textContent = Math.round(16 * state.size) + 'px';
|
||
}
|
||
|
||
function init() {
|
||
loadState();
|
||
buildUI();
|
||
apply();
|
||
render();
|
||
}
|
||
|
||
if (document.readyState === 'loading') {
|
||
document.addEventListener('DOMContentLoaded', init);
|
||
} else {
|
||
init();
|
||
}
|
||
})();
|
||
</script>
|
||
|
||
</body>
|
||
</html>
|