feat(routes): CSDN 博客 (#10447)

* feat(routes): CSDN Blog

* fix(docs): add CSDN Blog paramsDesc

lib/v2/csdn/blog.js

@@ -0,0 +1,39 @@
+const got = require('@/utils/got');
+const cheerio = require('cheerio');
+const rssParser = require('@/utils/rss-parser');
+
+module.exports = async (ctx) => {
+    const user = ctx.params.user;
+
+    const rootUrl = 'https://blog.csdn.net';
+    const blogUrl = `${rootUrl}/${user}`;
+    const rssUrl = blogUrl + '/rss/list';
+
+    const feed = await rssParser.parseURL(rssUrl);
+
+    const items = await Promise.all(
+        feed.items.map((item) =>
+            ctx.cache.tryGet(item.link, async () => {
+                const response = await got({
+                    method: 'get',
+                    url: item.link,
+                });
+
+                const $ = cheerio.load(response.data);
+
+                const description = $('#content_views').html();
+
+                return {
+                    ...item,
+                    description,
+                };
+            })
+        )
+    );
+
+    ctx.state.data = {
+        ...feed,
+        title: `${feed.title} - CSDN博客`,
+        item: items,
+    };
+};