Jsoup選擇似乎並沒有工作在Android

Question

所以我第一次寫這個代碼不僅僅是Java來測試它的工作原理和它的作用：

Document doc = Jsoup.connect("https://myanimelist.net/anime/31646/").get(); 
Elements studio = doc.select("span:contains(Studios) + a[href][title]"); 
System.out.println(studio.text()); 
String studioA = ""; 
for(Element link : studio){ 
    studioA = link.text(); 
} 
System.out.println(studioA); 

當我運行它，它打印：

Shaft 
Shaft 

這是我想要的。當我複製的代碼重構爲Android Studio中的的AsyncTask，代碼似乎並沒有工作：

public void getStudioAndRank(String animeURL) { 
    try { 
     Log.e("URL", animeURL); 
     Document doc = Jsoup.connect(animeURL).get(); 
     Log.e("GET", "JSOUP \n"+ doc.text()); 
     Elements studios = doc.select("span:contains(Studios) + a[href][title]"); 
     Log.e("studio", studios.text()+" "); 
     for(Element link : studios){ 
      Log.e("studios", link.text()+" "); 
     } 
     studioAnime = studios.text(); 
     Log.e("STUDIO", studioAnime+" "); 

    } catch (IOException e) { 
     e.printStackTrace(); 
    } 
} 

哪裏animeURL是點擊節目。該網址與我在第一種方法中測試的網址相似。然而，輸出是這樣的：

E/URL: https://myanimelist.net/anime/31646/ 
12-16 10:51:05.679 16333-16706/ E/GET: JSOUP 
                    3-gatsu no Lion (March comes in like a lion) - MyAnimeList.net 
                    My Anime ListAd FreeSign UpSearch menu 3-gatsu no Lion March comes in like a lion TV (23eps) Aired Fall 2016 Studios Shaft More Information 7.84 6,788 users Ranked #773 0 Reviews Synopsis... 
12-16 10:51:05.706 16333-16706 E/studio: 
12-16 10:51:05.710 16333-16706/ E/STUDIO: 

doc.select（）基本上返回「」。我不明白爲什麼同樣的doc.select（）在第一種方法中起作用。

Answer 1

很明顯，該網站檢測到移動設備的使用情況，並返回不同的響應，之前有過這種情況。解決方法是簡單：只需添加一個用戶代理的桌面版本：

示例代碼

public void getStudioAndRank(String animeURL) { 

    String userAgent = "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.87 Safari/537.36"; 

    try { 
     Log.e("URL", animeURL); 
     Document doc = Jsoup.connect(animeURL).userAgent(userAgent).get(); 
     Log.e("GET", "JSOUP \n"+ doc.text()); 
     Elements studios = doc.select("span:contains(Studios) + a[href][title]"); 
     Log.e("studio", studios.text()+" "); 
     for(Element link : studios){ 
      Log.e("studios", link.text()+" "); 
     } 
     studioAnime = studios.text(); 
     Log.e("STUDIO", studioAnime+" "); 

    } catch (IOException e) { 
     e.printStackTrace(); 
    } 
} 

輸出

11-07 20:47:56.474 22199-24058/de.fredericklein.sojsoup E/GET: JSOUP 
                   3-gatsu no Lion (March comes in like a lion) - MyAnimeList.net 
                   MyAnimeList.net Support MALLoginSign Up AllAnimeMangaCharactersPeopleNewsFeatured ArticlesForumClubsUsers View all results for ${ keyword } Anime Anime Search Top Anime Seasonal Anime Videos Reviews Recommendations Manga Manga Search Top Manga Reviews Recommendations Community Forums Clubs Blogs Users Industry News Featured Articles People Characters Watch Episode Videos Promotional Videos Help About Support Advertising FAQ Report Staff MAL Supporter Edit Anime Information What would you like to edit? SynopsisBackgroundAlternative TitlesPictureAiring DatesProducersRelationsRatingDurationSourceBroadcast   3-gatsu no Lion Add to My List Status: WatchingCompletedOn-HoldDroppedPlan to Watch Eps Seen:/23 Your Score: Select(10) Masterpiece(9) Great(8) Very Good(7) Good(6) Fine(5) Average(4) Bad(3) Very Bad(2) Horrible(1) Appalling   Add Detailed Info Add to Favorites Alternative Titles English: March comes in like a lion Synonyms: Sangatsu no Lion Japanese: ３月のライオン Information Type: TV Episodes: 23 Status: Currently Airing Aired: Oct 8, 2016 to ? Premiered: Fall 2016 Broadcast: Saturdays at 23:00 (JST) Producers: Aniplex, Dentsu, NHK, Hakusensha, Asmik Ace Entertainment, Toy's Factory Licensors: Aniplex of America Studios: Shaft Source: Manga Genres: Drama, Game, Seinen, Slice of Life Duration: 25 min. per ep. Rating: PG-13 - Teens 13 or older Statistics Score: 7.841 (scored by 6,788 users) 1 indicates a weighted score. Please note that 'Not yet aired' titles are excluded. Ranked: #7732 2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded. Popularity: #1119 Members: 49,845 Favorites: 82 Details Videos Episodes Reviews Recommendations Stats Characters & Staff News Forum Featured Clubs Pictures Top   >   Anime   >   3-gatsu no Lion 7.84 Ranked #773Popularity #1119Members 49,845 Fall 2016TVShaft Add to ListSelect(10) Masterpiece(9) Great(8) Very Good(7) Good(6) Fine(5) Average(4) Bad(3) Very Bad(2) Horrible(1) Appalling Episodes: /23 Rightstuf Trailer Aniplex US versionplay More videos EditSynopsisRei Kiriyama is a 17-year-old boy who recently started living alone, financed by his salary as a professional Shogi player. Despite his independence, however, he's yet to mature emotionally, and his problems continue to haunt him in his daily life. His relationship with his adoptive family is strained, and he has difficulties interacting with his fellow high school students. Meanwhile, his professional career has entered a slump. Burdened with the heavy expectations placed on him as the fifth to become pro in middle school, his wins and losses are fluctuating as his record and progression into the ranks begin to stagnate. Acquainted with Rei are the three Kawamoto sisters: Akari, Hinata, and Momo. Unlike Rei, they live happily in their modest home, which they warmly welcome Rei into as if he were one of their own. Despite his reservations about becoming too close to the family, he frequently visits, interacting with them and receiving the kind of care and affection he never quite had while under his foster home. This is the story of Rei's triumphs and failures, relationships new and old, and his growth as a person. (Source: TV Tropes) EditBackgroundNo background information has been added to this title. Help improve our database by adding background information here. EditRelated Anime Adaptation: 3-gatsu no Lion Other: 3-gatsu no Lion meets Bump of Chicken More charactersCharacters & Voice Actors Kiriyama, Rei Main Kawanishi, Kengo Japanese Uchiyama, Yumi Japanese Kawamoto, Akari Main Kayano, Ai Japanese Kawamoto, Hinata Main Hanazawa, Kana Japanese Kawamoto, Momo Main Kuno, Misaki Japanese More staffStaff Shinbou, Akiyuki Director Okada, Kenjirou Director, Episode Director Asano, Naoyuki Director, Storyboard, Animation Director Kameyama, Toshiki Sound Director Edit Opening Theme "Answer (アンサー)" by BUMP OF CHICKEN Edit Ending Theme "Fighter (ファイター)" by BUMP OF 
11-07 20:47:56.476 22199-24058/de.fredericklein.sojsoup E/studio: Shaft 
11-07 20:47:56.476 22199-24058/de.fredericklein.sojsoup E/studios: Shaft 
11-07 20:47:56.476 22199-24058/de.fredericklein.sojsoup E/STUDIO: Shaft