fix(route): 北京师范大学 党委学生工作部 - Response code 404 (Not Found) & Invalid URL (#13677)

* Update dwxgb.js

Fix #13675

* Update dwxgb.js

Use 'url.URL' constructor instead.

* Update dwxgb.js

I forgot

* Update dwxgb.js

Try to unify code style

* Update dwxgb.js

Alright....
Original I just fix problems

lib/v2/bnu/dwxgb.js

@@ -10,40 +10,35 @@ module.exports = async (ctx) => {
 
     let response;
     try {
-        response = await got({
-            method: 'get',
-            url: currentUrl,
-        });
+        response = await got(currentUrl);
     } catch (e) {
-        currentUrl = `${rootUrl}/${category}/${type}/index.htm`;
-        response = await got({
-            method: 'get',
-            url: currentUrl,
-        });
+        try {
+            response = await got(`${rootUrl}/${category}/${type}/index.htm`);
+        } catch (error) {
+            return;
+        }
     }
 
     const $ = cheerio.load(response.data);
 
     const list = $('ul.container.list > li')
-        .map((_, item) => ({
+    .map((_, item) => {
+        const link = $(item).find('a').attr('href');
+        const absoluteLink = new URL(link, currentUrl).href;
+        return {
             title: $(item).find('a').text().trim(),
             pubDate: parseDate($(item).find('span').text()),
-            link: `${rootUrl}/${category}/${type}/${$(item).find('a').attr('href')}`,
-        }))
-        .get();
+            link: absoluteLink,
+        };
+    })
+    .get();
 
     const items = await Promise.all(
         list.map((item) =>
             ctx.cache.tryGet(item.link, async () => {
-                const detailResponse = await got({
-                    method: 'get',
-                    url: item.link,
-                });
-
+                const detailResponse = await got(item.link);
                 const content = cheerio.load(detailResponse.data);
-
                 item.description = content('div.article.typo').html();
-
                 return item;
             })
         )