You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
95 lines
3.5 KiB
95 lines
3.5 KiB
package com.example.datacollect.strategy;
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import com.example.datacollect.model.Article;
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import org.jsoup.nodes.Document;
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import org.jsoup.nodes.Element;
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import org.jsoup.select.Elements;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.regex.Pattern;
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public class HnuNewsStrategy implements CrawlStrategy {
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// 1. 添加 Logger 成员
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private static final Logger logger = LoggerFactory.getLogger(HnuNewsStrategy.class);
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// 2. 修正 URL 匹配逻辑(原逻辑仅匹配域名,建议增加路径灵活性)
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private static final Pattern URL_PATTERN = Pattern.compile(".*news\\.hnu\\.edu\\.cn.*");
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@Override
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public boolean supports(String url) {
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return URL_PATTERN.matcher(url).matches();
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}
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@Override
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public List<Article> parse(String url, Document doc) {
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List<Article> articles = new ArrayList<>();
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// 原有逻辑:尝试选择列表项
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// 注意:根据2026年5月的网页结构,实际可能需要调整为 div 或其他容器
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Elements listItems = doc.select("ul.list11 li");
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if (listItems.isEmpty()) {
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logger.warn("在 URL [{}] 中未找到符合选择器 'ul.list11 li' 的新闻列表项。可能网页结构已更新。", url);
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return articles;
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}
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for (Element li : listItems) {
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Element link = li.selectFirst("a");
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if (link == null) {
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logger.debug("跳过一个无链接的列表项: {}", li.toString());
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continue;
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}
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String articleUrl = link.attr("href");
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// 3. 修正 URL 拼接逻辑(原逻辑 replace("..") 可能不够健壮)
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if (!articleUrl.startsWith("http")) {
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// 使用 URI 或简单的字符串处理来规范化路径
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articleUrl = "https://news.hnu.edu.cn/" + articleUrl;
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// 这里简单处理,实际可能需要更复杂的路径规范化
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while (articleUrl.contains("/../")) {
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int index = articleUrl.indexOf("/../");
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int prevSlash = articleUrl.lastIndexOf('/', index - 1);
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if (prevSlash != -1) {
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articleUrl = articleUrl.substring(0, prevSlash) + articleUrl.substring(index + 3);
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} else {
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break;
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}
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}
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}
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String title = "";
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Element titleEl = link.selectFirst("h4.l2.h4s2");
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if (titleEl != null) {
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title = titleEl.text().trim();
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} else {
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logger.debug("在链接 [{}] 中未找到标题元素 h4.l2.h4s2", articleUrl);
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}
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String content = "";
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Element contentEl = link.selectFirst("p.l3.ps3");
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if (contentEl != null) {
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content = contentEl.text().trim();
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}
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// 不再输出空内容警告,因 content 可能为空
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if (!title.isEmpty()) {
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articles.add(new Article(title, articleUrl, content));
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logger.debug("解析到新闻条目: [标题] {} - [URL] {}", title, articleUrl);
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} else {
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logger.trace("跳过空标题的链接: {}", articleUrl);
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}
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}
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logger.info("成功解析 URL [{}],共提取 {} 篇新闻。", url, articles.size());
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return articles;
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}
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@Override
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public int getPriority() {
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return 15;
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}
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}
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