using v2ex api

Author: Meowv

src/Meowv.Blog.BackgroundWorkers/Workers/HotWorker.cs

@@ -71,7 +71,7 @@ public override async Task Execute(IJobExecutionContext context)
                     {
                         switch (source)
                         {
-                            case Hot.KnownSources.juejin or Hot.KnownSources.csdn or Hot.KnownSources.zhihu or Hot.KnownSources.huxiu or Hot.KnownSources.douyin or Hot.KnownSources.woshipm or Hot.KnownSources.kaiyan:
+                            case Hot.KnownSources.v2ex or Hot.KnownSources.juejin or Hot.KnownSources.csdn or Hot.KnownSources.zhihu or Hot.KnownSources.huxiu or Hot.KnownSources.douyin or Hot.KnownSources.woshipm or Hot.KnownSources.kaiyan:
                                 {
                                     using var client = _httpClient.CreateClient();
                                     client.DefaultRequestHeaders.Add("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36 Edg/87.0.664.66");
@@ -163,17 +163,17 @@ async Task SaveAsync()
 
                     case Hot.KnownSources.v2ex:
                         {
-                            var html = result as HtmlDocument;
-                            var nodes = html.DocumentNode.SelectNodes("//span[@class='item_title']/a").ToList();
+                            var json = result as string;
+                            var nodes = JArray.Parse(json);
 
-                            nodes.ForEach(x =>
+                            foreach (var node in nodes)
                             {
                                 hot.Datas.Add(new Data
                                 {
-                                    Title = x.InnerText,
-                                    Url = $"https://www.v2ex.com{x.GetAttributeValue("href", "")}"
+                                    Title = node["title"].ToString(),
+                                    Url = node["url"].ToString()
                                 });
-                            });
+                            }
 
                             await SaveAsync();
                             break;

src/Meowv.Blog.Core/Domain/Hots/Hot.cs

@@ -80,7 +80,7 @@ public static class KnownSources
             public static Dictionary<string, string> Dictionary { get; set; } = new Dictionary<string, string>
             {
                 { cnblogs, "https://www.cnblogs.com" },
-                { v2ex, "https://www.v2ex.com/?tab=hot" },
+                { v2ex, "https://www.v2ex.com/api/topics/hot.json" },
                 { segmentfault, "https://segmentfault.com/hottest" },
                 { weixin, "https://weixin.sogou.com" },
                 { douban, "https://www.douban.com/group/explore" },