实现思路：

• 获取博客列表
• 获取博客详情
• 解析博客详情html，找出 #article_content部分
• 通过jsoup解析博客内容，转成md格式文件

依赖

  <dependency><groupId>com.alibaba.fastjson2</groupId><artifactId>fastjson2</artifactId><version>2.0.33</version></dependency><dependency><groupId>cn.hutool</groupId><artifactId>hutool-core</artifactId><version>5.8.21</version></dependency><dependency><groupId>org.jsoup</groupId><artifactId>jsoup</artifactId><version>1.14.3</version></dependency>

java实现代码

package com.example.iotdbdemo.config;import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.io.file.FileWriter;
import com.alibaba.fastjson2.JSONArray;
import com.alibaba.fastjson2.JSONObject;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpEntity;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.nodes.Node;
import org.jsoup.nodes.TextNode;
import org.jsoup.select.Elements;import java.io.IOException;/*** @author WANG*/
@Slf4j
public class Csdn2Hexo {private static final String LIST_URL = "https://blog.csdn.net/community/home-api/v1/get-business-list?page=2&size=10000&businessType=blog&orderby=&noMore=false&year=&month=&username=%s";private static final String DETAIL_URL = "https://blog.csdn.net/%s/article/details/%s";private static final String USER_ID = "your-userId";private static String getHttp(String url) {String responseStr = null;CloseableHttpClient httpclient = HttpClients.createDefault();HttpGet httpPost = new HttpGet(url);RequestConfig config = RequestConfig.custom().build();httpPost.setConfig(config);try (CloseableHttpResponse response2 = httpclient.execute(httpPost)){HttpEntity entity2 = response2.getEntity();responseStr = EntityUtils.toString(entity2);} catch (IOException e) {e.printStackTrace();}return responseStr;}private static void parseHtml(String html, String title, String description, String date) {Document document = Jsoup.parse(html);Element articleContentDiv = document.select("#article_content").first();assert articleContentDiv != null;Document doc = Jsoup.parse(articleContentDiv.html());StringBuilder markdown = new StringBuilder();markdown.append("---").append("\r\n").append("title: ").append(title).append("\r\n").append("date: ").append(date).append("\r\n").append("---").append("\r\n").append(description).append("\r\n");Element element = doc.body().children().get(0);for (Node node : element.childNodes()) {if (node instanceof TextNode textNode) {markdown.append(textNode.text());} else if (node instanceof Element childElement) {switch (childElement.tagName()) {case "h1", "h2", "h3", "h4", "h5", "h6" -> {int level = Integer.parseInt(childElement.tagName().substring(1));markdown.append("\n").append("#".repeat(level)).append(" ").append(childElement.text()).append("\n\n");}case "p" -> markdown.append("\n").append(childElement.text()).append("\n\n");case "ul" -> markdown.append(convertListToMarkdown(childElement, false));case "ol" -> markdown.append(convertListToMarkdown(childElement, true));case "pre" -> markdown.append("\n```\n").append(childElement.text()).append("\n```\n\n");default -> markdown.append("\r\n");}}}title = title.replaceAll("\\.+", "-");title = title.replaceAll(":+", "-");title = title.replaceAll("\\|+", "-");title = title.replaceAll(">+", "-");FileWriter writer = new FileWriter("E:\\gitee\\html\\" + title + ".md");writer.write(markdown.toString());log.info("Write {} success", writer.getFile().getAbsolutePath());}private static String convertListToMarkdown(Element list, boolean ordered) {StringBuilder markdown = new StringBuilder();Elements items = list.children();int count = 1;for (Element item : items) {String prefix = ordered ? (count++ + ". ") : "* ";markdown.append(prefix).append(item.text()).append("\n");}return markdown.append("\n").toString();}public static void main(String[] args) {String listUrl = String.format(LIST_URL, USER_ID);String listJson = getHttp(listUrl);JSONObject jsonObject = JSONObject.parseObject(listJson);Integer code = jsonObject.getInteger("code");if(code == 200){JSONArray jsonArray = jsonObject.getJSONObject("data").getJSONArray("list");if(CollUtil.isNotEmpty(jsonArray)){for (Object o : jsonArray) {if(o instanceof JSONObject item){Integer articleId = item.getInteger("articleId");String title = item.getString("title");String description = item.getString("description");String date = item.getString("postTime");String detailUrl = String.format(DETAIL_URL, USER_ID, articleId);String html = getHttp(detailUrl);parseHtml(html, title, description, date);}}}}}}