# csdn为MarkDown

**Repository Path**: luckytiger12138/csdn-is---mark-down

## Basic Information

- **Project Name**: csdn为MarkDown
- **Description**: 使用java爬取csdn为markdown文件
- **Primary Language**: Java
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 2
- **Forks**: 50
- **Created**: 2021-08-07
- **Last Updated**: 2024-11-22

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# climbCSDNblogsUtils
用Java写的爬取CSDN上的博客工具

使用时只要改下main方法的userName，改成自己的就行了，md文件在_post下
使用了jsoup来爬取，使用起来分很方便。
具体逻辑如下
```java

  /**
   * 爬csdn博客工具
   * create by zhangtao
   */
  public class climbUtil {
      public static void main(String[] args) {
          climb("qq_37221991");
      }

      private static void climb(String userName) {
          System.out.println("》》》》》》》爬虫开始《《《《《《《");
          // 把下面这个base_url换成你csdn的地址
          String baseUrl = "https://blog.csdn.net/" + userName + "/";
          String secondUrl = baseUrl + "article/list/";
          // 创建文件夹
          File file = new File("./_posts/");
          if (!file.exists()) {
              file.mkdir();
          }
          for (int i = 1; ; i++) {
              // 从第一页开始爬取
              String startUrl = secondUrl + i;
              Document doc = null;
              try {
                  doc = Jsoup.connect(startUrl).get();
              } catch (IOException e) {
                  System.out.println("jsoup获取url失败" + e.getMessage());
              }
              Element element = doc.body();
              //找到div class='article-list'
              element = element.select("div.article-list").first();
              if (element == null) {
                  break;
              }
              Elements elements = element.children();
              for (Element e : elements) {
                  // 拿到文章id
                  String articleId = e.attr("data-articleid");
                  System.out.println(articleId);
                  // 爬取单篇文章
                  climbDetailById(baseUrl, articleId);
              }
          }
          System.out.println("》》》》》》》爬虫结束《《《《《《《");
      }

      private static void climbDetailById(String baseUrl, String articleId) {
          String startUrl = baseUrl + "article/details/" + articleId;
          Document doc = null;
          try {
              doc = Jsoup.connect(startUrl).get();
          } catch (IOException e) {
              System.out.println("jsoup获取url失败" + e.getMessage());
          }
          Element element = doc.body();
          Element htmlElement = element.select("div#content_views").first();
          Element titleElement = element.selectFirst(".title-article");
          String fileName = titleElement.text();
          System.out.println(fileName);
          // 设置jekyll格式博客title
          String jekyllTitle = "title:   " + fileName + "\n";

          // 设置jekyll格式博客categories
          Elements elements = element.select("div.tags-box");
          String jekyllCategories = "";
          if (elements.size() > 1) {
              jekyllCategories = "categories:\n";
              jekyllCategories = getTagsBoxValue(elements, 1, jekyllCategories);
          }

          // 设置jekyll格式博客tags
          String jekyllTags = "tags:\n";
          jekyllTags = getTagsBoxValue(elements, 0, jekyllTags);

          // 获取时间
          Element timeElement = element.selectFirst("span.time");
          String time = timeElement.text().substring(5);
          System.out.println(time);

          // 设置jekyll格式博客date
          String jekyllDate = "date:   " + time + "\n";
          String md = Html2Md.getMarkDownText(htmlElement);
          // String md = HtmlToMd.getTextContent(htmlElement); 转出来的效果不满意，弃用

          System.out.println(md);

          String jekylltr = "---\n" + "layout:  post\n" + jekyllTitle + jekyllDate
                  + "author:  'zhangtao'\nheader-img: 'img/post-bg-2015.jpg'\ncatalog:   false\n"
                  + jekyllCategories + jekyllTags + "\n---\n";
          String date = time.split(" ")[0];
          String mdFileName = "./_posts/" + date + '-' + fileName + ".markdown";
          md = jekylltr + md;
          FileWriter writer;
          try {
              writer = new FileWriter(mdFileName);
              writer.write(md);
              writer.flush();
              writer.close();
          } catch (IOException e) {
              e.printStackTrace();
          }

      }

      private static String getTagsBoxValue(Elements elements, int index, String jekyllCategories) {
          Elements categories = elements.get(index).select("a.tag-link");
          for (Element e : categories) {
              String temp = e.text().replace("\t", "").replace("\n", "").replace("\r", "");
              jekyllCategories += "-" + temp + "\n";
          }
          return jekyllCategories;
      }


  }
```java