mirror of
https://github.com/nagisa77/OpenIsle.git
synced 2026-02-17 12:30:59 +08:00
fix: 后端代码格式化
This commit is contained in:
Tim
@@ -1,10 +1,28 @@
|
||||
package com.openisle.controller;
|
||||
|
||||
import com.openisle.model.Post;
|
||||
import com.openisle.model.Comment;
|
||||
import com.openisle.model.CommentSort;
|
||||
import com.openisle.service.PostService;
|
||||
import com.openisle.model.Post;
|
||||
import com.openisle.service.CommentService;
|
||||
import com.openisle.service.PostService;
|
||||
import com.vladsch.flexmark.ext.autolink.AutolinkExtension;
|
||||
import com.vladsch.flexmark.ext.gfm.strikethrough.StrikethroughExtension;
|
||||
import com.vladsch.flexmark.ext.gfm.tasklist.TaskListExtension;
|
||||
import com.vladsch.flexmark.ext.tables.TablesExtension;
|
||||
import com.vladsch.flexmark.html.HtmlRenderer;
|
||||
import com.vladsch.flexmark.parser.Parser;
|
||||
import com.vladsch.flexmark.util.data.MutableDataSet;
|
||||
import io.swagger.v3.oas.annotations.Operation;
|
||||
import io.swagger.v3.oas.annotations.media.Content;
|
||||
import io.swagger.v3.oas.annotations.media.Schema;
|
||||
import io.swagger.v3.oas.annotations.responses.ApiResponse;
|
||||
import java.net.URI;
|
||||
import java.time.ZoneId;
|
||||
import java.time.ZonedDateTime;
|
||||
import java.time.format.DateTimeFormatter;
|
||||
import java.util.*;
|
||||
import java.util.regex.Matcher;
|
||||
import java.util.regex.Pattern;
|
||||
import lombok.RequiredArgsConstructor;
|
||||
import org.jsoup.Jsoup;
|
||||
import org.jsoup.nodes.Document;
|
||||
@@ -13,346 +31,376 @@ import org.jsoup.safety.Safelist;
|
||||
import org.springframework.beans.factory.annotation.Value;
|
||||
import org.springframework.web.bind.annotation.GetMapping;
|
||||
import org.springframework.web.bind.annotation.RestController;
|
||||
import io.swagger.v3.oas.annotations.Operation;
|
||||
import io.swagger.v3.oas.annotations.media.Content;
|
||||
import io.swagger.v3.oas.annotations.media.Schema;
|
||||
import io.swagger.v3.oas.annotations.responses.ApiResponse;
|
||||
|
||||
import com.vladsch.flexmark.ext.autolink.AutolinkExtension;
|
||||
import com.vladsch.flexmark.ext.tables.TablesExtension;
|
||||
import com.vladsch.flexmark.ext.gfm.strikethrough.StrikethroughExtension;
|
||||
import com.vladsch.flexmark.ext.gfm.tasklist.TaskListExtension;
|
||||
import com.vladsch.flexmark.html.HtmlRenderer;
|
||||
import com.vladsch.flexmark.parser.Parser;
|
||||
import com.vladsch.flexmark.util.data.MutableDataSet;
|
||||
|
||||
import java.net.URI;
|
||||
import java.time.ZoneId;
|
||||
import java.time.ZonedDateTime;
|
||||
import java.time.format.DateTimeFormatter;
|
||||
import java.util.*;
|
||||
import java.util.regex.Matcher;
|
||||
import java.util.regex.Pattern;
|
||||
|
||||
@RestController
|
||||
@RequiredArgsConstructor
|
||||
public class RssController {
|
||||
private final PostService postService;
|
||||
private final CommentService commentService;
|
||||
|
||||
@Value("${app.website-url:https://www.open-isle.com}")
|
||||
private String websiteUrl;
|
||||
private final PostService postService;
|
||||
private final CommentService commentService;
|
||||
|
||||
// 兼容 Markdown/HTML 两类图片写法（用于 enclosure）
|
||||
private static final Pattern MD_IMAGE = Pattern.compile("!\\[[^\\]]*\\]\\(([^)]+)\\)");
|
||||
private static final Pattern HTML_IMAGE = Pattern.compile("<BaseImage[^>]+src=[\"']?([^\"'>]+)[\"']?[^>]*>");
|
||||
@Value("${app.website-url:https://www.open-isle.com}")
|
||||
private String websiteUrl;
|
||||
|
||||
private static final DateTimeFormatter RFC1123 = DateTimeFormatter.RFC_1123_DATE_TIME;
|
||||
// 兼容 Markdown/HTML 两类图片写法（用于 enclosure）
|
||||
private static final Pattern MD_IMAGE = Pattern.compile("!\\[[^\\]]*\\]\\(([^)]+)\\)");
|
||||
private static final Pattern HTML_IMAGE = Pattern.compile(
|
||||
"<BaseImage[^>]+src=[\"']?([^\"'>]+)[\"']?[^>]*>"
|
||||
);
|
||||
|
||||
// flexmark：Markdown -> HTML
|
||||
private static final Parser MD_PARSER;
|
||||
private static final HtmlRenderer MD_RENDERER;
|
||||
static {
|
||||
MutableDataSet opts = new MutableDataSet();
|
||||
opts.set(Parser.EXTENSIONS, Arrays.asList(
|
||||
TablesExtension.create(),
|
||||
AutolinkExtension.create(),
|
||||
StrikethroughExtension.create(),
|
||||
TaskListExtension.create()
|
||||
));
|
||||
// 允许内联 HTML（下游再做 sanitize）
|
||||
opts.set(Parser.HTML_BLOCK_PARSER, true);
|
||||
MD_PARSER = Parser.builder(opts).build();
|
||||
MD_RENDERER = HtmlRenderer.builder(opts).escapeHtml(false).build();
|
||||
private static final DateTimeFormatter RFC1123 = DateTimeFormatter.RFC_1123_DATE_TIME;
|
||||
|
||||
// flexmark：Markdown -> HTML
|
||||
private static final Parser MD_PARSER;
|
||||
private static final HtmlRenderer MD_RENDERER;
|
||||
|
||||
static {
|
||||
MutableDataSet opts = new MutableDataSet();
|
||||
opts.set(
|
||||
Parser.EXTENSIONS,
|
||||
Arrays.asList(
|
||||
TablesExtension.create(),
|
||||
AutolinkExtension.create(),
|
||||
StrikethroughExtension.create(),
|
||||
TaskListExtension.create()
|
||||
)
|
||||
);
|
||||
// 允许内联 HTML（下游再做 sanitize）
|
||||
opts.set(Parser.HTML_BLOCK_PARSER, true);
|
||||
MD_PARSER = Parser.builder(opts).build();
|
||||
MD_RENDERER = HtmlRenderer.builder(opts).escapeHtml(false).build();
|
||||
}
|
||||
|
||||
@GetMapping(value = "/api/rss", produces = "application/rss+xml;charset=UTF-8")
|
||||
@Operation(summary = "RSS feed", description = "Generate RSS feed for latest posts")
|
||||
@ApiResponse(
|
||||
responseCode = "200",
|
||||
description = "RSS XML",
|
||||
content = @Content(schema = @Schema(implementation = String.class))
|
||||
)
|
||||
public String feed() {
|
||||
// 建议 20；你现在是 10，这里保留你的 10
|
||||
List<Post> posts = postService.listLatestRssPosts(10);
|
||||
String base = trimTrailingSlash(websiteUrl);
|
||||
|
||||
StringBuilder sb = new StringBuilder(4096);
|
||||
sb.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
|
||||
sb.append("<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">");
|
||||
sb.append("<channel>");
|
||||
elem(sb, "title", cdata("OpenIsle RSS"));
|
||||
elem(sb, "link", base + "/");
|
||||
elem(sb, "description", cdata("Latest posts"));
|
||||
ZonedDateTime updated = posts
|
||||
.stream()
|
||||
.map(p -> p.getCreatedAt().atZone(ZoneId.systemDefault()))
|
||||
.max(Comparator.naturalOrder())
|
||||
.orElse(ZonedDateTime.now());
|
||||
// channel lastBuildDate（GMT）
|
||||
elem(sb, "lastBuildDate", toRfc1123Gmt(updated));
|
||||
|
||||
for (Post p : posts) {
|
||||
String link = base + "/posts/" + p.getId();
|
||||
|
||||
// 1) Markdown -> HTML
|
||||
String html = renderMarkdown(p.getContent());
|
||||
|
||||
// 2) Sanitize（白名单增强）
|
||||
String safeHtml = sanitizeHtml(html);
|
||||
|
||||
// 3) 绝对化 href/src + 强制 rel/target
|
||||
String absHtml = absolutifyHtml(safeHtml, base);
|
||||
|
||||
// 4) 纯文本摘要（用于 <description>）
|
||||
String plain = textSummary(absHtml, 180);
|
||||
|
||||
// 5) enclosure（首图，已绝对化）
|
||||
String enclosure = firstImage(p.getContent());
|
||||
if (enclosure == null) {
|
||||
// 如果 Markdown 没有图，尝试从渲染后的 HTML 再抓一次
|
||||
enclosure = firstImage(absHtml);
|
||||
}
|
||||
if (enclosure != null) {
|
||||
enclosure = absolutifyUrl(enclosure, base);
|
||||
}
|
||||
|
||||
// 6) 构造优雅的附加区块（原文链接 + 精选评论），编入 <content:encoded>
|
||||
List<Comment> topComments = commentService.getCommentsForPost(
|
||||
p.getId(),
|
||||
CommentSort.MOST_INTERACTIONS
|
||||
);
|
||||
topComments = topComments.subList(0, Math.min(10, topComments.size()));
|
||||
String footerHtml = buildFooterHtml(base, link, topComments);
|
||||
|
||||
sb.append("<item>");
|
||||
elem(sb, "title", cdata(nullSafe(p.getTitle())));
|
||||
elem(sb, "link", link);
|
||||
sb.append("<guid isPermaLink=\"true\">").append(link).append("</guid>");
|
||||
elem(sb, "pubDate", toRfc1123Gmt(p.getCreatedAt().atZone(ZoneId.systemDefault())));
|
||||
// 摘要
|
||||
elem(sb, "description", cdata(plain));
|
||||
// 全文（HTML）：正文 + 优雅的 Markdown 区块（已转 HTML）
|
||||
sb
|
||||
.append("<content:encoded><![CDATA[")
|
||||
.append(absHtml)
|
||||
.append(footerHtml)
|
||||
.append("]]></content:encoded>");
|
||||
// 首图 enclosure（图片类型）
|
||||
if (enclosure != null) {
|
||||
sb
|
||||
.append("<enclosure url=\"")
|
||||
.append(escapeXml(enclosure))
|
||||
.append("\" type=\"")
|
||||
.append(getMimeType(enclosure))
|
||||
.append("\" />");
|
||||
}
|
||||
sb.append("</item>");
|
||||
}
|
||||
|
||||
@GetMapping(value = "/api/rss", produces = "application/rss+xml;charset=UTF-8")
|
||||
@Operation(summary = "RSS feed", description = "Generate RSS feed for latest posts")
|
||||
@ApiResponse(responseCode = "200", description = "RSS XML", content = @Content(schema = @Schema(implementation = String.class)))
|
||||
public String feed() {
|
||||
// 建议 20；你现在是 10，这里保留你的 10
|
||||
List<Post> posts = postService.listLatestRssPosts(10);
|
||||
String base = trimTrailingSlash(websiteUrl);
|
||||
sb.append("</channel></rss>");
|
||||
return sb.toString();
|
||||
}
|
||||
|
||||
StringBuilder sb = new StringBuilder(4096);
|
||||
sb.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
|
||||
sb.append("<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">");
|
||||
sb.append("<channel>");
|
||||
elem(sb, "title", cdata("OpenIsle RSS"));
|
||||
elem(sb, "link", base + "/");
|
||||
elem(sb, "description", cdata("Latest posts"));
|
||||
ZonedDateTime updated = posts.stream()
|
||||
.map(p -> p.getCreatedAt().atZone(ZoneId.systemDefault()))
|
||||
.max(Comparator.naturalOrder())
|
||||
.orElse(ZonedDateTime.now());
|
||||
// channel lastBuildDate（GMT）
|
||||
elem(sb, "lastBuildDate", toRfc1123Gmt(updated));
|
||||
/* ===================== Markdown → HTML ===================== */
|
||||
|
||||
for (Post p : posts) {
|
||||
String link = base + "/posts/" + p.getId();
|
||||
private static String renderMarkdown(String md) {
|
||||
if (md == null || md.isEmpty()) return "";
|
||||
return MD_RENDERER.render(MD_PARSER.parse(md));
|
||||
}
|
||||
|
||||
// 1) Markdown -> HTML
|
||||
String html = renderMarkdown(p.getContent());
|
||||
/* ===================== Sanitize & 绝对化 ===================== */
|
||||
|
||||
// 2) Sanitize（白名单增强）
|
||||
String safeHtml = sanitizeHtml(html);
|
||||
private static String sanitizeHtml(String html) {
|
||||
if (html == null) return "";
|
||||
Safelist wl = Safelist.relaxed()
|
||||
.addTags(
|
||||
"pre",
|
||||
"code",
|
||||
"figure",
|
||||
"figcaption",
|
||||
"picture",
|
||||
"source",
|
||||
"table",
|
||||
"thead",
|
||||
"tbody",
|
||||
"tr",
|
||||
"th",
|
||||
"td",
|
||||
"h1",
|
||||
"h2",
|
||||
"h3",
|
||||
"h4",
|
||||
"h5",
|
||||
"h6",
|
||||
"hr",
|
||||
"blockquote"
|
||||
)
|
||||
.addAttributes("a", "href", "title", "target", "rel")
|
||||
.addAttributes("img", "src", "alt", "title", "width", "height")
|
||||
.addAttributes("source", "srcset", "type", "media")
|
||||
.addAttributes("code", "class")
|
||||
.addAttributes("pre", "class")
|
||||
.addProtocols("a", "href", "http", "https", "mailto")
|
||||
.addProtocols("img", "src", "http", "https", "data")
|
||||
.addProtocols("source", "srcset", "http", "https");
|
||||
// 清除所有 on* 事件、style（避免阅读器环境差异）
|
||||
return Jsoup.clean(html, wl);
|
||||
}
|
||||
|
||||
// 3) 绝对化 href/src + 强制 rel/target
|
||||
String absHtml = absolutifyHtml(safeHtml, base);
|
||||
private static String absolutifyHtml(String html, String baseUrl) {
|
||||
if (html == null || html.isEmpty()) return "";
|
||||
Document doc = Jsoup.parseBodyFragment(html, baseUrl);
|
||||
// a[href]
|
||||
for (Element a : doc.select("a[href]")) {
|
||||
String href = a.attr("href");
|
||||
String abs = absolutifyUrl(href, baseUrl);
|
||||
a.attr("href", abs);
|
||||
// 强制外链安全属性
|
||||
a.attr("rel", "noopener noreferrer nofollow");
|
||||
a.attr("target", "_blank");
|
||||
}
|
||||
// img[src]
|
||||
for (Element img : doc.select("img[src]")) {
|
||||
String src = img.attr("src");
|
||||
String abs = absolutifyUrl(src, baseUrl);
|
||||
img.attr("src", abs);
|
||||
}
|
||||
// source[srcset] （picture/webp）
|
||||
for (Element s : doc.select("source[srcset]")) {
|
||||
String srcset = s.attr("srcset");
|
||||
s.attr("srcset", absolutifySrcset(srcset, baseUrl));
|
||||
}
|
||||
return doc.body().html();
|
||||
}
|
||||
|
||||
// 4) 纯文本摘要（用于 <description>）
|
||||
String plain = textSummary(absHtml, 180);
|
||||
private static String absolutifyUrl(String url, String baseUrl) {
|
||||
if (url == null || url.isEmpty()) return url;
|
||||
String u = url.trim();
|
||||
if (u.startsWith("//")) {
|
||||
return "https:" + u;
|
||||
}
|
||||
if (u.startsWith("#")) {
|
||||
// 保留页面内锚点：拼接到首页（也可拼接到当前帖子的 link，但此处无上下文）
|
||||
return baseUrl + "/" + u;
|
||||
}
|
||||
try {
|
||||
URI base = URI.create(ensureTrailingSlash(baseUrl));
|
||||
URI abs = base.resolve(u);
|
||||
return abs.toString();
|
||||
} catch (Exception e) {
|
||||
return url;
|
||||
}
|
||||
}
|
||||
|
||||
// 5) enclosure（首图，已绝对化）
|
||||
String enclosure = firstImage(p.getContent());
|
||||
if (enclosure == null) {
|
||||
// 如果 Markdown 没有图，尝试从渲染后的 HTML 再抓一次
|
||||
enclosure = firstImage(absHtml);
|
||||
}
|
||||
if (enclosure != null) {
|
||||
enclosure = absolutifyUrl(enclosure, base);
|
||||
}
|
||||
private static String absolutifySrcset(String srcset, String baseUrl) {
|
||||
if (srcset == null || srcset.isEmpty()) return srcset;
|
||||
String[] parts = srcset.split(",");
|
||||
List<String> out = new ArrayList<>(parts.length);
|
||||
for (String part : parts) {
|
||||
String p = part.trim();
|
||||
if (p.isEmpty()) continue;
|
||||
String[] seg = p.split("\\s+");
|
||||
String url = seg[0];
|
||||
String size = seg.length > 1 ? seg[1] : "";
|
||||
out.add(absolutifyUrl(url, baseUrl) + (size.isEmpty() ? "" : " " + size));
|
||||
}
|
||||
return String.join(", ", out);
|
||||
}
|
||||
|
||||
// 6) 构造优雅的附加区块（原文链接 + 精选评论），编入 <content:encoded>
|
||||
List<Comment> topComments = commentService
|
||||
.getCommentsForPost(p.getId(), CommentSort.MOST_INTERACTIONS);
|
||||
topComments = topComments.subList(0, Math.min(10, topComments.size()));
|
||||
String footerHtml = buildFooterHtml(base, link, topComments);
|
||||
/* ===================== 摘要 & enclosure ===================== */
|
||||
|
||||
sb.append("<item>");
|
||||
elem(sb, "title", cdata(nullSafe(p.getTitle())));
|
||||
elem(sb, "link", link);
|
||||
sb.append("<guid isPermaLink=\"true\">").append(link).append("</guid>");
|
||||
elem(sb, "pubDate", toRfc1123Gmt(p.getCreatedAt().atZone(ZoneId.systemDefault())));
|
||||
// 摘要
|
||||
elem(sb, "description", cdata(plain));
|
||||
// 全文（HTML）：正文 + 优雅的 Markdown 区块（已转 HTML）
|
||||
sb.append("<content:encoded><![CDATA[")
|
||||
.append(absHtml)
|
||||
.append(footerHtml)
|
||||
.append("]]></content:encoded>");
|
||||
// 首图 enclosure（图片类型）
|
||||
if (enclosure != null) {
|
||||
sb.append("<enclosure url=\"").append(escapeXml(enclosure)).append("\" type=\"")
|
||||
.append(getMimeType(enclosure)).append("\" />");
|
||||
}
|
||||
sb.append("</item>");
|
||||
}
|
||||
private static String textSummary(String html, int maxLen) {
|
||||
if (html == null) return "";
|
||||
String text = Jsoup.parse(html).text().replaceAll("\\s+", " ").trim();
|
||||
if (text.length() <= maxLen) return text;
|
||||
return text.substring(0, maxLen) + "…";
|
||||
}
|
||||
|
||||
sb.append("</channel></rss>");
|
||||
return sb.toString();
|
||||
private String firstImage(String content) {
|
||||
if (content == null) return null;
|
||||
Matcher m = MD_IMAGE.matcher(content);
|
||||
if (m.find()) return m.group(1);
|
||||
m = HTML_IMAGE.matcher(content);
|
||||
if (m.find()) return m.group(1);
|
||||
// 再从纯 HTML 里解析一次（如果传入的是渲染后的）
|
||||
try {
|
||||
Document doc = Jsoup.parse(content);
|
||||
Element img = doc.selectFirst("img[src]");
|
||||
if (img != null) return img.attr("src");
|
||||
} catch (Exception ignored) {}
|
||||
return null;
|
||||
}
|
||||
|
||||
private static String getMimeType(String url) {
|
||||
String lower = url == null ? "" : url.toLowerCase(Locale.ROOT);
|
||||
if (lower.endsWith(".png")) return "image/png";
|
||||
if (lower.endsWith(".gif")) return "image/gif";
|
||||
if (lower.endsWith(".webp")) return "image/webp";
|
||||
if (lower.endsWith(".svg")) return "image/svg+xml";
|
||||
if (lower.endsWith(".avif")) return "image/avif";
|
||||
if (lower.endsWith(".jpg") || lower.endsWith(".jpeg")) return "image/jpeg";
|
||||
// 默认兜底
|
||||
return "image/jpeg";
|
||||
}
|
||||
|
||||
/* ===================== 附加区块（原文链接 + 精选评论） ===================== */
|
||||
|
||||
/**
|
||||
* 将“原文链接 + 精选评论（最多 10 条）”以优雅的 Markdown 形式渲染为 HTML，
|
||||
* 并做 sanitize + 绝对化，然后拼入 content:encoded 尾部。
|
||||
*/
|
||||
private static String buildFooterHtml(
|
||||
String baseUrl,
|
||||
String originalLink,
|
||||
List<Comment> topComments
|
||||
) {
|
||||
StringBuilder md = new StringBuilder(256);
|
||||
|
||||
// 分割线
|
||||
md.append("\n\n---\n\n");
|
||||
|
||||
// 原文链接（强调 + 可点击）
|
||||
md
|
||||
.append("**原文链接：** ")
|
||||
.append("[")
|
||||
.append(originalLink)
|
||||
.append("](")
|
||||
.append(originalLink)
|
||||
.append(")")
|
||||
.append("\n\n");
|
||||
|
||||
// 精选评论（仅当有评论时展示）
|
||||
if (topComments != null && !topComments.isEmpty()) {
|
||||
md.append("### 精选评论（Top ").append(Math.min(10, topComments.size())).append("）\n\n");
|
||||
for (Comment c : topComments) {
|
||||
String author = usernameOf(c);
|
||||
String content = nullSafe(c.getContent()).replace("\r", "");
|
||||
// 使用引用样式展示，提升可读性
|
||||
md.append("> @").append(author).append(": ").append(content).append("\n\n");
|
||||
}
|
||||
}
|
||||
|
||||
/* ===================== Markdown → HTML ===================== */
|
||||
// 渲染为 HTML，并保持和正文一致的处理流程
|
||||
String html = renderMarkdown(md.toString());
|
||||
String safe = sanitizeHtml(html);
|
||||
return absolutifyHtml(safe, baseUrl);
|
||||
}
|
||||
|
||||
private static String renderMarkdown(String md) {
|
||||
if (md == null || md.isEmpty()) return "";
|
||||
return MD_RENDERER.render(MD_PARSER.parse(md));
|
||||
private static String usernameOf(Comment c) {
|
||||
if (c == null) return "匿名";
|
||||
try {
|
||||
Object authorObj = c.getAuthor();
|
||||
if (authorObj == null) return "匿名";
|
||||
// 反射避免直接依赖实体字段名变化（也可直接强转到具体类型）
|
||||
String username;
|
||||
try {
|
||||
username = (String) authorObj.getClass().getMethod("getUsername").invoke(authorObj);
|
||||
} catch (Exception e) {
|
||||
username = null;
|
||||
}
|
||||
if (username == null || username.isEmpty()) return "匿名";
|
||||
return username;
|
||||
} catch (Exception ignored) {
|
||||
return "匿名";
|
||||
}
|
||||
}
|
||||
|
||||
/* ===================== Sanitize & 绝对化 ===================== */
|
||||
/* ===================== 时间/字符串/XML ===================== */
|
||||
|
||||
private static String sanitizeHtml(String html) {
|
||||
if (html == null) return "";
|
||||
Safelist wl = Safelist.relaxed()
|
||||
.addTags(
|
||||
"pre","code","figure","figcaption","picture","source",
|
||||
"table","thead","tbody","tr","th","td",
|
||||
"h1","h2","h3","h4","h5","h6",
|
||||
"hr","blockquote"
|
||||
)
|
||||
.addAttributes("a", "href", "title", "target", "rel")
|
||||
.addAttributes("img", "src", "alt", "title", "width", "height")
|
||||
.addAttributes("source", "srcset", "type", "media")
|
||||
.addAttributes("code", "class")
|
||||
.addAttributes("pre", "class")
|
||||
.addProtocols("a", "href", "http", "https", "mailto")
|
||||
.addProtocols("img", "src", "http", "https", "data")
|
||||
.addProtocols("source", "srcset", "http", "https");
|
||||
// 清除所有 on* 事件、style（避免阅读器环境差异）
|
||||
return Jsoup.clean(html, wl);
|
||||
}
|
||||
private static String toRfc1123Gmt(ZonedDateTime zdt) {
|
||||
return zdt.withZoneSameInstant(ZoneId.of("GMT")).format(RFC1123);
|
||||
}
|
||||
|
||||
private static String absolutifyHtml(String html, String baseUrl) {
|
||||
if (html == null || html.isEmpty()) return "";
|
||||
Document doc = Jsoup.parseBodyFragment(html, baseUrl);
|
||||
// a[href]
|
||||
for (Element a : doc.select("a[href]")) {
|
||||
String href = a.attr("href");
|
||||
String abs = absolutifyUrl(href, baseUrl);
|
||||
a.attr("href", abs);
|
||||
// 强制外链安全属性
|
||||
a.attr("rel", "noopener noreferrer nofollow");
|
||||
a.attr("target", "_blank");
|
||||
}
|
||||
// img[src]
|
||||
for (Element img : doc.select("img[src]")) {
|
||||
String src = img.attr("src");
|
||||
String abs = absolutifyUrl(src, baseUrl);
|
||||
img.attr("src", abs);
|
||||
}
|
||||
// source[srcset] （picture/webp）
|
||||
for (Element s : doc.select("source[srcset]")) {
|
||||
String srcset = s.attr("srcset");
|
||||
s.attr("srcset", absolutifySrcset(srcset, baseUrl));
|
||||
}
|
||||
return doc.body().html();
|
||||
}
|
||||
private static String cdata(String s) {
|
||||
if (s == null) return "<![CDATA[]]>";
|
||||
// 防止出现 "]]>" 终止标记破坏 CDATA
|
||||
return "<![CDATA[" + s.replace("]]>", "]]]]><![CDATA[>") + "]]>";
|
||||
}
|
||||
|
||||
private static String absolutifyUrl(String url, String baseUrl) {
|
||||
if (url == null || url.isEmpty()) return url;
|
||||
String u = url.trim();
|
||||
if (u.startsWith("//")) {
|
||||
return "https:" + u;
|
||||
}
|
||||
if (u.startsWith("#")) {
|
||||
// 保留页面内锚点：拼接到首页（也可拼接到当前帖子的 link，但此处无上下文）
|
||||
return baseUrl + "/" + u;
|
||||
}
|
||||
try {
|
||||
URI base = URI.create(ensureTrailingSlash(baseUrl));
|
||||
URI abs = base.resolve(u);
|
||||
return abs.toString();
|
||||
} catch (Exception e) {
|
||||
return url;
|
||||
}
|
||||
}
|
||||
private static void elem(StringBuilder sb, String name, String value) {
|
||||
sb.append('<').append(name).append('>').append(value).append("</").append(name).append('>');
|
||||
}
|
||||
|
||||
private static String absolutifySrcset(String srcset, String baseUrl) {
|
||||
if (srcset == null || srcset.isEmpty()) return srcset;
|
||||
String[] parts = srcset.split(",");
|
||||
List<String> out = new ArrayList<>(parts.length);
|
||||
for (String part : parts) {
|
||||
String p = part.trim();
|
||||
if (p.isEmpty()) continue;
|
||||
String[] seg = p.split("\\s+");
|
||||
String url = seg[0];
|
||||
String size = seg.length > 1 ? seg[1] : "";
|
||||
out.add(absolutifyUrl(url, baseUrl) + (size.isEmpty() ? "" : " " + size));
|
||||
}
|
||||
return String.join(", ", out);
|
||||
}
|
||||
private static String escapeXml(String s) {
|
||||
if (s == null) return "";
|
||||
return s
|
||||
.replace("&", "&")
|
||||
.replace("<", "<")
|
||||
.replace(">", ">")
|
||||
.replace("\"", """)
|
||||
.replace("'", "'");
|
||||
}
|
||||
|
||||
/* ===================== 摘要 & enclosure ===================== */
|
||||
private static String trimTrailingSlash(String s) {
|
||||
if (s == null) return "";
|
||||
return s.endsWith("/") ? s.substring(0, s.length() - 1) : s;
|
||||
}
|
||||
|
||||
private static String textSummary(String html, int maxLen) {
|
||||
if (html == null) return "";
|
||||
String text = Jsoup.parse(html).text().replaceAll("\\s+", " ").trim();
|
||||
if (text.length() <= maxLen) return text;
|
||||
return text.substring(0, maxLen) + "…";
|
||||
}
|
||||
private static String ensureTrailingSlash(String s) {
|
||||
if (s == null || s.isEmpty()) return "/";
|
||||
return s.endsWith("/") ? s : s + "/";
|
||||
}
|
||||
|
||||
private String firstImage(String content) {
|
||||
if (content == null) return null;
|
||||
Matcher m = MD_IMAGE.matcher(content);
|
||||
if (m.find()) return m.group(1);
|
||||
m = HTML_IMAGE.matcher(content);
|
||||
if (m.find()) return m.group(1);
|
||||
// 再从纯 HTML 里解析一次（如果传入的是渲染后的）
|
||||
try {
|
||||
Document doc = Jsoup.parse(content);
|
||||
Element img = doc.selectFirst("img[src]");
|
||||
if (img != null) return img.attr("src");
|
||||
} catch (Exception ignored) {}
|
||||
return null;
|
||||
}
|
||||
|
||||
private static String getMimeType(String url) {
|
||||
String lower = url == null ? "" : url.toLowerCase(Locale.ROOT);
|
||||
if (lower.endsWith(".png")) return "image/png";
|
||||
if (lower.endsWith(".gif")) return "image/gif";
|
||||
if (lower.endsWith(".webp")) return "image/webp";
|
||||
if (lower.endsWith(".svg")) return "image/svg+xml";
|
||||
if (lower.endsWith(".avif")) return "image/avif";
|
||||
if (lower.endsWith(".jpg") || lower.endsWith(".jpeg")) return "image/jpeg";
|
||||
// 默认兜底
|
||||
return "image/jpeg";
|
||||
}
|
||||
|
||||
/* ===================== 附加区块（原文链接 + 精选评论） ===================== */
|
||||
|
||||
/**
|
||||
* 将“原文链接 + 精选评论（最多 10 条）”以优雅的 Markdown 形式渲染为 HTML，
|
||||
* 并做 sanitize + 绝对化，然后拼入 content:encoded 尾部。
|
||||
*/
|
||||
private static String buildFooterHtml(String baseUrl, String originalLink, List<Comment> topComments) {
|
||||
StringBuilder md = new StringBuilder(256);
|
||||
|
||||
// 分割线
|
||||
md.append("\n\n---\n\n");
|
||||
|
||||
// 原文链接（强调 + 可点击）
|
||||
md.append("**原文链接：** ")
|
||||
.append("[").append(originalLink).append("](").append(originalLink).append(")")
|
||||
.append("\n\n");
|
||||
|
||||
// 精选评论（仅当有评论时展示）
|
||||
if (topComments != null && !topComments.isEmpty()) {
|
||||
md.append("### 精选评论（Top ").append(Math.min(10, topComments.size())).append("）\n\n");
|
||||
for (Comment c : topComments) {
|
||||
String author = usernameOf(c);
|
||||
String content = nullSafe(c.getContent()).replace("\r", "");
|
||||
// 使用引用样式展示，提升可读性
|
||||
md.append("> @").append(author).append(": ").append(content).append("\n\n");
|
||||
}
|
||||
}
|
||||
|
||||
// 渲染为 HTML，并保持和正文一致的处理流程
|
||||
String html = renderMarkdown(md.toString());
|
||||
String safe = sanitizeHtml(html);
|
||||
return absolutifyHtml(safe, baseUrl);
|
||||
}
|
||||
|
||||
private static String usernameOf(Comment c) {
|
||||
if (c == null) return "匿名";
|
||||
try {
|
||||
Object authorObj = c.getAuthor();
|
||||
if (authorObj == null) return "匿名";
|
||||
// 反射避免直接依赖实体字段名变化（也可直接强转到具体类型）
|
||||
String username;
|
||||
try {
|
||||
username = (String) authorObj.getClass().getMethod("getUsername").invoke(authorObj);
|
||||
} catch (Exception e) {
|
||||
username = null;
|
||||
}
|
||||
if (username == null || username.isEmpty()) return "匿名";
|
||||
return username;
|
||||
} catch (Exception ignored) {
|
||||
return "匿名";
|
||||
}
|
||||
}
|
||||
|
||||
/* ===================== 时间/字符串/XML ===================== */
|
||||
|
||||
private static String toRfc1123Gmt(ZonedDateTime zdt) {
|
||||
return zdt.withZoneSameInstant(ZoneId.of("GMT")).format(RFC1123);
|
||||
}
|
||||
|
||||
private static String cdata(String s) {
|
||||
if (s == null) return "<![CDATA[]]>";
|
||||
// 防止出现 "]]>" 终止标记破坏 CDATA
|
||||
return "<![CDATA[" + s.replace("]]>", "]]]]><![CDATA[>") + "]]>";
|
||||
}
|
||||
|
||||
private static void elem(StringBuilder sb, String name, String value) {
|
||||
sb.append('<').append(name).append('>').append(value).append("</").append(name).append('>');
|
||||
}
|
||||
|
||||
private static String escapeXml(String s) {
|
||||
if (s == null) return "";
|
||||
return s.replace("&", "&").replace("<", "<").replace(">", ">")
|
||||
.replace("\"", """).replace("'", "'");
|
||||
}
|
||||
|
||||
private static String trimTrailingSlash(String s) {
|
||||
if (s == null) return "";
|
||||
return s.endsWith("/") ? s.substring(0, s.length() - 1) : s;
|
||||
}
|
||||
|
||||
private static String ensureTrailingSlash(String s) {
|
||||
if (s == null || s.isEmpty()) return "/";
|
||||
return s.endsWith("/") ? s : s + "/";
|
||||
}
|
||||
|
||||
private static String nullSafe(String s) { return s == null ? "" : s; }
|
||||
private static String nullSafe(String s) {
|
||||
return s == null ? "" : s;
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user