diff --git a/books/views.py b/books/views.py
index e41b5b55..0946f52c 100644
--- a/books/views.py
+++ b/books/views.py
@@ -554,9 +554,9 @@ def click_to_scrape(request):
     if request.method == "POST":
         url = request.POST.get("url")
         if url:
-            from common.scraper import scrape_douban_book
+            from common.scraper import DoubanBookScraper
             try:
-                scraped_book, raw_cover = scrape_douban_book(url)
+                scraped_book, raw_cover = DoubanBookScraper.scrape(url)
             except TimeoutError:
                 return render(request, 'common/error.html', {'msg': _("爬取数据失败😫，请重试")})
             except ValueError:
diff --git a/common/models.py b/common/models.py
index 8d20bacb..52606562 100644
--- a/common/models.py
+++ b/common/models.py
@@ -7,10 +7,15 @@ from django.db.models import Q
 from markdownx.models import MarkdownxField
 from users.models import User
 from mastodon.api import get_relationships, get_cross_site_id
+from .utils import clean_url
 
 
 # abstract base classes
 ###################################
+class SourceSiteEnum(models.IntegerChoices):
+    DOUBAN = 1, _("豆瓣")
+
+
 class Resource(models.Model):
 
     rating_total_score = models.PositiveIntegerField(null=True, blank=True)
@@ -24,6 +29,8 @@ class Resource(models.Model):
     brief = models.TextField(blank=True, default="")
     other_info = postgres.JSONField(
         blank=True, null=True, encoder=DjangoJSONEncoder, default=dict)
+    # source_url = models.URLField(max_length=500)
+    # source_site = models.SmallIntegerField()
 
     class Meta:
         abstract = True
@@ -35,7 +42,7 @@ class Resource(models.Model):
         ]
 
     def save(self, *args, **kwargs):
-        """ update rating before save to db """
+        """ update rating and strip source url scheme & querystring before save to db """
         if self.rating_number and self.rating_total_score:
             self.rating = Decimal(
                 str(round(self.rating_total_score / self.rating_number, 1)))
@@ -43,6 +50,7 @@ class Resource(models.Model):
             self.rating = None
         else:
             raise IntegrityError()
+        # self.source = clean_url(self.source)
         super().save(*args, **kwargs)
 
     def calculate_rating(self, old_rating, new_rating):
diff --git a/common/scraper.py b/common/scraper.py
index 8931aa96..7eda124a 100644
--- a/common/scraper.py
+++ b/common/scraper.py
@@ -5,13 +5,14 @@ import logging
 from lxml import html
 import re
 from boofilsic.settings import LUMINATI_USERNAME, LUMINATI_PASSWORD, DEBUG
+from django.utils.translation import ugettext_lazy as _
 from movies.models import MovieGenreEnum
+from common.models import SourceSiteEnum
+
 
 RE_NUMBERS = re.compile(r"\d+\d*")
 RE_WHITESPACES = re.compile(r"\s+")
-# without slash at the end
-RE_DOUBAN_BOOK_URL = re.compile(r"https://book.douban.com/subject/\d+")
-RE_DOUBAN_MOVIE_URL = re.compile(r"https://movie.douban.com/subject/\d+")
+
 
 DEFAULT_REQUEST_HEADERS = {
     'Host': 'book.douban.com',
@@ -35,6 +36,10 @@ PORT = 22225
 logger = logging.getLogger(__name__)
 
 
+# register all implemented scraper in form of {host: class,}
+registry = {}
+
+
 def log_url(func):
     """
     Catch exceptions and log then pass the exceptions.
@@ -53,336 +58,405 @@ def log_url(func):
     return wrapper
 
 
-def download_page(url, regex, headers):
-    url = regex.findall(url)
-    if not url:
-        raise ValueError("not valid url")
-    else:
-        url = url[0] + '/'
+class AbstractScraper:
 
-    session_id = random.random()
-    proxy_url = ('http://%s-country-cn-session-%s:%s@zproxy.lum-superproxy.io:%d' %
-                 (LUMINATI_USERNAME, session_id, LUMINATI_PASSWORD, PORT))
-    proxies = {
-        'http': proxy_url,
-        'https': proxy_url,
-    }
-    # if DEBUG:
-    #     proxies = None
-    r = requests.get(url, proxies=proxies, headers=headers, timeout=TIMEOUT)
-    # r = requests.get(url, headers=DEFAULT_REQUEST_HEADERS, timeout=TIMEOUT)
+    # subclasses must specify those two variables
+    site = None
+    host = None
 
-    return html.fromstring(r.content.decode('utf-8'))
+    def __init_subclass__(cls, **kwargs):
+        # this statement initialize the subclasses
+        super().__init_subclass__(**kwargs)
+        assert cls.site is not None, "class variable `site` must be specified"
+        assert cls.host is not None, "class variable `host` must be specified"
+        assert isinstance(cls.host, str), "`host` must be type str"
+        assert isinstance(cls.site, int), "`site` must be type int"
+        assert hasattr(cls, 'scrape') and callable(cls.scrape), "scaper must have method `.scrape()`"
+        # decorate the scrape method
+        cls.scrape = classmethod(log_url(cls.scrape))
+        registry[cls.host] = cls
 
 
-def download_image(url):
-    if url is None:
-        return
-    raw_img = None
-    session_id = random.random()
-    proxy_url = ('http://%s-country-cn-session-%s:%s@zproxy.lum-superproxy.io:%d' %
-                 (LUMINATI_USERNAME, session_id, LUMINATI_PASSWORD, PORT))
-    proxies = {
-        'http': proxy_url,
-        'https': proxy_url,
-    }
-    # if DEBUG:
-    #     proxies = None
-    if url:
-        img_response = requests.get(
-            url,
-            headers={
-                'accept': 'image/webp,image/apng,image/*,*/*;q=0.8',
-                'accept-encoding': 'gzip, deflate',
-                'accept-language': 'en-US,en;q=0.9,zh-CN;q=0.8,zh;q=0.7,fr-FR;q=0.6,fr;q=0.5,zh-TW;q=0.4',
-                'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36 Edg/81.0.416.72',
-                'cache-control': 'no-cache',
-                'dnt': '1',
-            },
-            proxies=proxies,
-            timeout=TIMEOUT,
-        )
-        if img_response.status_code == 200:
-            raw_img = img_response.content
-    return raw_img
+    def scrape(self, url):
+        """
+        Scrape/request model schema specified data from given url and return it.
+        Implementations of subclasses to this method would be decorated as class method.
+        """
+        raise NotImplementedError("Subclass should implement this method")
 
-
-@log_url
-def scrape_douban_book(url):
-    regex = RE_DOUBAN_BOOK_URL
-    headers = DEFAULT_REQUEST_HEADERS.copy()
-    headers['Host'] = 'book.douban.com'
-    content = download_page(url, regex, headers)
-
-    # parsing starts here
-    try:
-        title = content.xpath("/html/body//h1/span/text()")[0].strip()
-    except IndexError:
-        raise ValueError("given url contains no book info")
-
-    subtitle_elem = content.xpath("//div[@id='info']//span[text()='副标题:']/following::text()")
-    subtitle = subtitle_elem[0].strip() if subtitle_elem else None
-
-    orig_title_elem = content.xpath("//div[@id='info']//span[text()='原作名:']/following::text()")
-    orig_title = orig_title_elem[0].strip() if orig_title_elem else None
-
-    language_elem = content.xpath("//div[@id='info']//span[text()='语言:']/following::text()")
-    language = language_elem[0].strip() if language_elem else None
-
-    pub_house_elem = content.xpath("//div[@id='info']//span[text()='出版社:']/following::text()")
-    pub_house = pub_house_elem[0].strip() if pub_house_elem else None
-
-    pub_date_elem = content.xpath("//div[@id='info']//span[text()='出版年:']/following::text()")
-    pub_date = pub_date_elem[0].strip() if pub_date_elem else ''
-    year_month_day = RE_NUMBERS.findall(pub_date)
-    if len(year_month_day) in (2, 3):
-        pub_year = int(year_month_day[0])
-        pub_month = int(year_month_day[1])
-    elif len(year_month_day) == 1:
-        pub_year = int(year_month_day[0])
-        pub_month = None
-    else:
-        pub_year = None
-        pub_month = None
-    if pub_year and pub_month and pub_year < pub_month:
-        pub_year, pub_month = pub_month, pub_year
-    pub_year = None if pub_year is not None and not pub_year in range(0, 3000) else pub_year
-    pub_month = None if pub_month is not None and not pub_month in range(1, 12) else pub_month
-
-    binding_elem = content.xpath("//div[@id='info']//span[text()='装帧:']/following::text()")
-    binding = binding_elem[0].strip() if binding_elem else None
-
-    price_elem = content.xpath("//div[@id='info']//span[text()='定价:']/following::text()")
-    price = price_elem[0].strip() if price_elem else None
-
-    pages_elem = content.xpath("//div[@id='info']//span[text()='页数:']/following::text()")
-    pages = pages_elem[0].strip() if pages_elem else None 
-    if pages is not None:
-        pages = int(RE_NUMBERS.findall(pages)[0]) if RE_NUMBERS.findall(pages) else None
-
-    isbn_elem = content.xpath("//div[@id='info']//span[text()='ISBN:']/following::text()")
-    isbn = isbn_elem[0].strip() if isbn_elem else None
-
-    brief_elem = content.xpath("//h2/span[text()='内容简介']/../following-sibling::div[1]//div[@class='intro'][not(ancestor::span[@class='short'])]/p/text()")
-    brief = '\n'.join(p.strip() for p in brief_elem) if brief_elem else None
-
-    contents = None
-    try:
-        contents_elem = content.xpath("//h2/span[text()='目录']/../following-sibling::div[1]")[0]
-        # if next the id of next sibling contains `dir`, that would be the full contents
-        if "dir" in contents_elem.getnext().xpath("@id")[0]:
-            contents_elem = contents_elem.getnext()
-            contents = '\n'.join(p.strip() for p in contents_elem.xpath("text()")[:-2]) if contents_elem else None
+    @classmethod
+    def download_page(cls, url, regex, headers):
+        url = regex.findall(url)
+        if not url:
+            raise ValueError("not valid url")
         else:
-            contents = '\n'.join(p.strip() for p in contents_elem.xpath("text()")) if contents_elem else None
-    except:
-        pass
+            url = url[0] + '/'
 
-    img_url_elem = content.xpath("//*[@id='mainpic']/a/img/@src")
-    img_url = img_url_elem[0].strip() if img_url_elem else None
-    raw_img = download_image(img_url)
+        session_id = random.random()
+        proxy_url = ('http://%s-country-cn-session-%s:%s@zproxy.lum-superproxy.io:%d' %
+                    (LUMINATI_USERNAME, session_id, LUMINATI_PASSWORD, PORT))
+        proxies = {
+            'http': proxy_url,
+            'https': proxy_url,
+        }
+        # if DEBUG:
+        #     proxies = None
+        r = requests.get(url, proxies=proxies, headers=headers, timeout=TIMEOUT)
+        # r = requests.get(url, headers=DEFAULT_REQUEST_HEADERS, timeout=TIMEOUT)
 
-    # there are two html formats for authors and translators
-    authors_elem = content.xpath("""//div[@id='info']//span[text()='作者:']/following-sibling::br[1]/
-        preceding-sibling::a[preceding-sibling::span[text()='作者:']]/text()""")
-    if not authors_elem:
-        authors_elem = content.xpath("""//div[@id='info']//span[text()=' 作者']/following-sibling::a/text()""")
-    if authors_elem:
-        authors = []
-        for author in authors_elem:
-            authors.append(RE_WHITESPACES.sub(' ', author.strip()))
-    else:
-        authors = None
+        return html.fromstring(r.content.decode('utf-8'))
 
-    translators_elem = content.xpath("""//div[@id='info']//span[text()='译者:']/following-sibling::br[1]/
-        preceding-sibling::a[preceding-sibling::span[text()='译者:']]/text()""")
-    if not translators_elem:
-        translators_elem = content.xpath("""//div[@id='info']//span[text()=' 译者']/following-sibling::a/text()""")
-    if translators_elem:
-        translators = []
-        for translator in translators_elem:
-            translators.append(RE_WHITESPACES.sub(' ', translator.strip()))
-    else:
-        translators = None
-
-    other = {}
-    cncode_elem = content.xpath("//div[@id='info']//span[text()='统一书号:']/following::text()")
-    if cncode_elem:
-        other['统一书号'] = cncode_elem[0].strip()
-    series_elem = content.xpath("//div[@id='info']//span[text()='丛书:']/following-sibling::a[1]/text()")
-    if series_elem:
-        other['丛书'] = series_elem[0].strip()            
-    imprint_elem = content.xpath("//div[@id='info']//span[text()='出品方:']/following-sibling::a[1]/text()")
-    if imprint_elem:
-        other['出品方'] = imprint_elem[0].strip()
-
-    data = {
-        'title' : title,
-        'subtitle' : subtitle,
-        'orig_title' : orig_title,
-        'author' : authors,
-        'translator' : translators,
-        'language' : language,
-        'pub_house' : pub_house,
-        'pub_year' : pub_year,
-        'pub_month' : pub_month,
-        'binding' : binding,
-        'price' : price,
-        'pages' : pages,
-        'isbn' : isbn,
-        'brief' : brief,
-        'contents' : contents,
-        'other_info' : other
-    }
-    return data, raw_img
+    @classmethod
+    def download_image(cls, url):
+        if url is None:
+            return
+        raw_img = None
+        session_id = random.random()
+        proxy_url = ('http://%s-country-cn-session-%s:%s@zproxy.lum-superproxy.io:%d' %
+                    (LUMINATI_USERNAME, session_id, LUMINATI_PASSWORD, PORT))
+        proxies = {
+            'http': proxy_url,
+            'https': proxy_url,
+        }
+        # if DEBUG:
+        #     proxies = None
+        if url:
+            img_response = requests.get(
+                url,
+                headers={
+                    'accept': 'image/webp,image/apng,image/*,*/*;q=0.8',
+                    'accept-encoding': 'gzip, deflate',
+                    'accept-language': 'en-US,en;q=0.9,zh-CN;q=0.8,zh;q=0.7,fr-FR;q=0.6,fr;q=0.5,zh-TW;q=0.4',
+                    'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36 Edg/81.0.416.72',
+                    'cache-control': 'no-cache',
+                    'dnt': '1',
+                },
+                proxies=proxies,
+                timeout=TIMEOUT,
+            )
+            if img_response.status_code == 200:
+                raw_img = img_response.content
+        return raw_img
 
 
-@log_url
-def scrape_douban_movie(url):
-    regex = RE_DOUBAN_MOVIE_URL
-    headers = DEFAULT_REQUEST_HEADERS.copy()
-    headers['Host'] = 'movie.douban.com'
-    content = download_page(url, regex, headers)
+class DoubanBookScraper(AbstractScraper):
+    site = SourceSiteEnum.DOUBAN.value
+    host = "book.douban.com"
+    regex = re.compile(r"https://book.douban.com/subject/\d+")
 
-    # parsing starts here
-    try:
-        raw_title = content.xpath(
-            "//span[@property='v:itemreviewed']/text()")[0].strip()
-    except IndexError:
-        raise ValueError("given url contains no movie info")
-    
-    orig_title = content.xpath(
-        "//img[@rel='v:image']/@alt")[0].strip()
-    title = raw_title.split(orig_title)[0].strip()
-    # if has no chinese title
-    if title == '':
-        title = orig_title
+    def scrape(self, url):
+        regex = self.regex
+        headers = DEFAULT_REQUEST_HEADERS.copy()
+        headers['Host'] = self.host
+        content = self.download_page(url, regex, headers)
 
-    if title == orig_title:
-        orig_title = None
+        # parsing starts here
+        try:
+            title = content.xpath("/html/body//h1/span/text()")[0].strip()
+        except IndexError:
+            raise ValueError("given url contains no book info")
 
-    # there are two html formats for authors and translators
-    other_title_elem = content.xpath(
-        "//div[@id='info']//span[text()='又名:']/following-sibling::text()[1]")
-    other_title = other_title_elem[0].strip().split(' / ') if other_title_elem else None
+        subtitle_elem = content.xpath(
+            "//div[@id='info']//span[text()='副标题:']/following::text()")
+        subtitle = subtitle_elem[0].strip() if subtitle_elem else None
 
-    imdb_elem = content.xpath(
-        "//div[@id='info']//span[text()='IMDb链接:']/following-sibling::a[1]/text()")
-    imdb_code = imdb_elem[0].strip() if imdb_elem else None
+        orig_title_elem = content.xpath(
+            "//div[@id='info']//span[text()='原作名:']/following::text()")
+        orig_title = orig_title_elem[0].strip() if orig_title_elem else None
 
-    director_elem = content.xpath("//div[@id='info']//span[text()='导演']/following-sibling::span[1]/a/text()")
-    director = director_elem if director_elem else None
+        language_elem = content.xpath(
+            "//div[@id='info']//span[text()='语言:']/following::text()")
+        language = language_elem[0].strip() if language_elem else None
 
-    playwright_elem = content.xpath("//div[@id='info']//span[text()='编剧']/following-sibling::span[1]/a/text()")
-    playwright = playwright_elem if playwright_elem else None
+        pub_house_elem = content.xpath(
+            "//div[@id='info']//span[text()='出版社:']/following::text()")
+        pub_house = pub_house_elem[0].strip() if pub_house_elem else None
 
-    actor_elem = content.xpath("//div[@id='info']//span[text()='主演']/following-sibling::span[1]/a/text()")
-    actor = actor_elem if actor_elem else None
+        pub_date_elem = content.xpath(
+            "//div[@id='info']//span[text()='出版年:']/following::text()")
+        pub_date = pub_date_elem[0].strip() if pub_date_elem else ''
+        year_month_day = RE_NUMBERS.findall(pub_date)
+        if len(year_month_day) in (2, 3):
+            pub_year = int(year_month_day[0])
+            pub_month = int(year_month_day[1])
+        elif len(year_month_day) == 1:
+            pub_year = int(year_month_day[0])
+            pub_month = None
+        else:
+            pub_year = None
+            pub_month = None
+        if pub_year and pub_month and pub_year < pub_month:
+            pub_year, pub_month = pub_month, pub_year
+        pub_year = None if pub_year is not None and not pub_year in range(
+            0, 3000) else pub_year
+        pub_month = None if pub_month is not None and not pub_month in range(
+            1, 12) else pub_month
 
-    # construct genre translator
-    genre_translator = {}
-    attrs = [attr for attr in dir(MovieGenreEnum) if not '__' in attr]
-    for attr in attrs:
-        genre_translator[getattr(MovieGenreEnum, attr).label] = getattr(
-            MovieGenreEnum, attr).value
+        binding_elem = content.xpath(
+            "//div[@id='info']//span[text()='装帧:']/following::text()")
+        binding = binding_elem[0].strip() if binding_elem else None
 
-    genre_elem = content.xpath("//span[@property='v:genre']/text()")
-    if genre_elem:
-        genre = []
-        for g in genre_elem:
-            genre.append(genre_translator[g])
-    else:
-        genre = None
+        price_elem = content.xpath(
+            "//div[@id='info']//span[text()='定价:']/following::text()")
+        price = price_elem[0].strip() if price_elem else None
 
-    showtime_elem = content.xpath("//span[@property='v:initialReleaseDate']/text()")
-    if showtime_elem:
-        showtime = []
-        for st in showtime_elem:
-            parts = st.split('(')
-            if len(parts) == 1:
-                time = st.split('(')[0]
-                region = ''
+        pages_elem = content.xpath(
+            "//div[@id='info']//span[text()='页数:']/following::text()")
+        pages = pages_elem[0].strip() if pages_elem else None
+        if pages is not None:
+            pages = int(RE_NUMBERS.findall(pages)[
+                        0]) if RE_NUMBERS.findall(pages) else None
+
+        isbn_elem = content.xpath(
+            "//div[@id='info']//span[text()='ISBN:']/following::text()")
+        isbn = isbn_elem[0].strip() if isbn_elem else None
+
+        brief_elem = content.xpath(
+            "//h2/span[text()='内容简介']/../following-sibling::div[1]//div[@class='intro'][not(ancestor::span[@class='short'])]/p/text()")
+        brief = '\n'.join(p.strip() for p in brief_elem) if brief_elem else None
+
+        contents = None
+        try:
+            contents_elem = content.xpath(
+                "//h2/span[text()='目录']/../following-sibling::div[1]")[0]
+            # if next the id of next sibling contains `dir`, that would be the full contents
+            if "dir" in contents_elem.getnext().xpath("@id")[0]:
+                contents_elem = contents_elem.getnext()
+                contents = '\n'.join(p.strip() for p in contents_elem.xpath(
+                    "text()")[:-2]) if contents_elem else None
             else:
-                time = st.split('(')[0]
-                region = st.split('(')[1][0:-1]
-            showtime.append({time: region})
-    else:
-        showtime = None
-    
-    site_elem = content.xpath("//div[@id='info']//span[text()='官方网站:']/following-sibling::a[1]/@href")
-    site = site_elem[0].strip() if site_elem else None
+                contents = '\n'.join(p.strip() for p in contents_elem.xpath(
+                    "text()")) if contents_elem else None
+        except:
+            pass
 
-    area_elem = content.xpath("//div[@id='info']//span[text()='制片国家/地区:']/following-sibling::text()[1]")
-    if area_elem:
-        area = [a.strip() for a in area_elem[0].split(' / ')]
-    else:
-        area = None
+        img_url_elem = content.xpath("//*[@id='mainpic']/a/img/@src")
+        img_url = img_url_elem[0].strip() if img_url_elem else None
+        raw_img = self.download_image(img_url)
 
-    language_elem = content.xpath("//div[@id='info']//span[text()='语言:']/following-sibling::text()[1]")
-    if language_elem:
-        language = [a.strip() for a in language_elem[0].split(' / ')]
-    else:
-        language = None
+        # there are two html formats for authors and translators
+        authors_elem = content.xpath("""//div[@id='info']//span[text()='作者:']/following-sibling::br[1]/
+            preceding-sibling::a[preceding-sibling::span[text()='作者:']]/text()""")
+        if not authors_elem:
+            authors_elem = content.xpath(
+                """//div[@id='info']//span[text()=' 作者']/following-sibling::a/text()""")
+        if authors_elem:
+            authors = []
+            for author in authors_elem:
+                authors.append(RE_WHITESPACES.sub(' ', author.strip()))
+        else:
+            authors = None
 
-    year_elem = content.xpath("//span[@class='year']/text()")
-    year = int(year_elem[0][1:-1]) if year_elem else None
+        translators_elem = content.xpath("""//div[@id='info']//span[text()='译者:']/following-sibling::br[1]/
+            preceding-sibling::a[preceding-sibling::span[text()='译者:']]/text()""")
+        if not translators_elem:
+            translators_elem = content.xpath(
+                """//div[@id='info']//span[text()=' 译者']/following-sibling::a/text()""")
+        if translators_elem:
+            translators = []
+            for translator in translators_elem:
+                translators.append(RE_WHITESPACES.sub(' ', translator.strip()))
+        else:
+            translators = None
 
-    duration_elem = content.xpath("//span[@property='v:runtime']/text()")
-    other_duration_elem = content.xpath("//span[@property='v:runtime']/following-sibling::text()[1]")
-    if duration_elem:
-        duration = duration_elem[0].strip()
-        if other_duration_elem:
-            duration += other_duration_elem[0].rstrip()
-    else:
-        duration = None
+        other = {}
+        cncode_elem = content.xpath(
+            "//div[@id='info']//span[text()='统一书号:']/following::text()")
+        if cncode_elem:
+            other['统一书号'] = cncode_elem[0].strip()
+        series_elem = content.xpath(
+            "//div[@id='info']//span[text()='丛书:']/following-sibling::a[1]/text()")
+        if series_elem:
+            other['丛书'] = series_elem[0].strip()
+        imprint_elem = content.xpath(
+            "//div[@id='info']//span[text()='出品方:']/following-sibling::a[1]/text()")
+        if imprint_elem:
+            other['出品方'] = imprint_elem[0].strip()
+
+        data = {
+            'title': title,
+            'subtitle': subtitle,
+            'orig_title': orig_title,
+            'author': authors,
+            'translator': translators,
+            'language': language,
+            'pub_house': pub_house,
+            'pub_year': pub_year,
+            'pub_month': pub_month,
+            'binding': binding,
+            'price': price,
+            'pages': pages,
+            'isbn': isbn,
+            'brief': brief,
+            'contents': contents,
+            'other_info': other
+        }
+        return data, raw_img
+
+
+class DoubanMovieScraper(AbstractScraper):
+    site = SourceSiteEnum.DOUBAN.value
+    host = 'movie.douban.com'
+    regex = re.compile(r"https://movie.douban.com/subject/\d+")
+
+    def scrape(self, url):
+        regex = self.regex
+        headers = DEFAULT_REQUEST_HEADERS.copy()
+        headers['Host'] = 'movie.douban.com'
+        content = self.download_page(url, regex, headers)
+
+        # parsing starts here
+        try:
+            raw_title = content.xpath(
+                "//span[@property='v:itemreviewed']/text()")[0].strip()
+        except IndexError:
+            raise ValueError("given url contains no movie info")
+
+        orig_title = content.xpath(
+            "//img[@rel='v:image']/@alt")[0].strip()
+        title = raw_title.split(orig_title)[0].strip()
+        # if has no chinese title
+        if title == '':
+            title = orig_title
+
+        if title == orig_title:
+            orig_title = None
+
+        # there are two html formats for authors and translators
+        other_title_elem = content.xpath(
+            "//div[@id='info']//span[text()='又名:']/following-sibling::text()[1]")
+        other_title = other_title_elem[0].strip().split(
+            ' / ') if other_title_elem else None
+
+        imdb_elem = content.xpath(
+            "//div[@id='info']//span[text()='IMDb链接:']/following-sibling::a[1]/text()")
+        imdb_code = imdb_elem[0].strip() if imdb_elem else None
+
+        director_elem = content.xpath(
+            "//div[@id='info']//span[text()='导演']/following-sibling::span[1]/a/text()")
+        director = director_elem if director_elem else None
+
+        playwright_elem = content.xpath(
+            "//div[@id='info']//span[text()='编剧']/following-sibling::span[1]/a/text()")
+        playwright = playwright_elem if playwright_elem else None
+
+        actor_elem = content.xpath(
+            "//div[@id='info']//span[text()='主演']/following-sibling::span[1]/a/text()")
+        actor = actor_elem if actor_elem else None
+
+        # construct genre translator
+        genre_translator = {}
+        attrs = [attr for attr in dir(MovieGenreEnum) if not '__' in attr]
+        for attr in attrs:
+            genre_translator[getattr(MovieGenreEnum, attr).label] = getattr(
+                MovieGenreEnum, attr).value
+
+        genre_elem = content.xpath("//span[@property='v:genre']/text()")
+        if genre_elem:
+            genre = []
+            for g in genre_elem:
+                genre.append(genre_translator[g])
+        else:
+            genre = None
+
+        showtime_elem = content.xpath(
+            "//span[@property='v:initialReleaseDate']/text()")
+        if showtime_elem:
+            showtime = []
+            for st in showtime_elem:
+                parts = st.split('(')
+                if len(parts) == 1:
+                    time = st.split('(')[0]
+                    region = ''
+                else:
+                    time = st.split('(')[0]
+                    region = st.split('(')[1][0:-1]
+                showtime.append({time: region})
+        else:
+            showtime = None
+
+        site_elem = content.xpath(
+            "//div[@id='info']//span[text()='官方网站:']/following-sibling::a[1]/@href")
+        site = site_elem[0].strip() if site_elem else None
+
+        area_elem = content.xpath(
+            "//div[@id='info']//span[text()='制片国家/地区:']/following-sibling::text()[1]")
+        if area_elem:
+            area = [a.strip() for a in area_elem[0].split(' / ')]
+        else:
+            area = None
+
+        language_elem = content.xpath(
+            "//div[@id='info']//span[text()='语言:']/following-sibling::text()[1]")
+        if language_elem:
+            language = [a.strip() for a in language_elem[0].split(' / ')]
+        else:
+            language = None
+
+        year_elem = content.xpath("//span[@class='year']/text()")
+        year = int(year_elem[0][1:-1]) if year_elem else None
+
+        duration_elem = content.xpath("//span[@property='v:runtime']/text()")
+        other_duration_elem = content.xpath(
+            "//span[@property='v:runtime']/following-sibling::text()[1]")
+        if duration_elem:
+            duration = duration_elem[0].strip()
+            if other_duration_elem:
+                duration += other_duration_elem[0].rstrip()
+        else:
+            duration = None
 
-    season_elem = content.xpath("//*[@id='season']/option[@selected='selected']/text()")
-    if not season_elem:
         season_elem = content.xpath(
-            "//div[@id='info']//span[text()='季数:']/following-sibling::text()[1]")
-        season = int(season_elem[0].strip()) if season_elem else None
-    else:
-        season = int(season_elem[0].strip())
+            "//*[@id='season']/option[@selected='selected']/text()")
+        if not season_elem:
+            season_elem = content.xpath(
+                "//div[@id='info']//span[text()='季数:']/following-sibling::text()[1]")
+            season = int(season_elem[0].strip()) if season_elem else None
+        else:
+            season = int(season_elem[0].strip())
 
-    episodes_elem = content.xpath(
-        "//div[@id='info']//span[text()='集数:']/following-sibling::text()[1]")
-    episodes = int(episodes_elem[0].strip()) if episodes_elem else None
+        episodes_elem = content.xpath(
+            "//div[@id='info']//span[text()='集数:']/following-sibling::text()[1]")
+        episodes = int(episodes_elem[0].strip()) if episodes_elem else None
 
-    single_episode_length_elem = content.xpath(
-        "//div[@id='info']//span[text()='单集片长:']/following-sibling::text()[1]")
-    single_episode_length = single_episode_length_elem[0].strip() if single_episode_length_elem else None
+        single_episode_length_elem = content.xpath(
+            "//div[@id='info']//span[text()='单集片长:']/following-sibling::text()[1]")
+        single_episode_length = single_episode_length_elem[0].strip(
+        ) if single_episode_length_elem else None
 
-    # if has field `episodes` not none then must be series
-    is_series = True if episodes else False
+        # if has field `episodes` not none then must be series
+        is_series = True if episodes else False
 
-    brief_elem = content.xpath("//span[@class='all hidden']")
-    if not brief_elem:
-        brief_elem = content.xpath("//span[@property='v:summary']")
-    brief = '\n'.join([e.strip() for e in brief_elem[0].xpath('./text()')]) if brief_elem else None
+        brief_elem = content.xpath("//span[@class='all hidden']")
+        if not brief_elem:
+            brief_elem = content.xpath("//span[@property='v:summary']")
+        brief = '\n'.join([e.strip() for e in brief_elem[0].xpath(
+            './text()')]) if brief_elem else None
 
-    img_url_elem = content.xpath("//img[@rel='v:image']/@src")
-    img_url = img_url_elem[0].strip() if img_url_elem else None
-    raw_img = download_image(img_url)
+        img_url_elem = content.xpath("//img[@rel='v:image']/@src")
+        img_url = img_url_elem[0].strip() if img_url_elem else None
+        raw_img = self.download_image(img_url)
 
-    data = {
-        'title': title,
-        'orig_title': orig_title,
-        'other_title': other_title,
-        'imdb_code': imdb_code,
-        'director': director,
-        'playwright': playwright,
-        'actor': actor,
-        'genre': genre,
-        'showtime': showtime,
-        'site': site,
-        'area': area,
-        'language': language,
-        'year': year,
-        'duration': duration,
-        'season': season,
-        'episodes': episodes,
-        'single_episode_length': single_episode_length,
-        'brief': brief,
-        'is_series': is_series,
-    }
-    return data, raw_img
+        data = {
+            'title': title,
+            'orig_title': orig_title,
+            'other_title': other_title,
+            'imdb_code': imdb_code,
+            'director': director,
+            'playwright': playwright,
+            'actor': actor,
+            'genre': genre,
+            'showtime': showtime,
+            'site': site,
+            'area': area,
+            'language': language,
+            'year': year,
+            'duration': duration,
+            'season': season,
+            'episodes': episodes,
+            'single_episode_length': single_episode_length,
+            'brief': brief,
+            'is_series': is_series,
+        }
+        return data, raw_img
+ 
\ No newline at end of file
diff --git a/common/templatetags/strip_scheme.py b/common/templatetags/strip_scheme.py
index 9f5c9eaf..e73c7b0c 100644
--- a/common/templatetags/strip_scheme.py
+++ b/common/templatetags/strip_scheme.py
@@ -9,9 +9,9 @@ register = template.Library()
 def strip_scheme(value):
     """ Strip the `https://.../` part of urls"""
     if value.startswith("https://"):
-        value = value.replace("https://", '')
+        value = value.lstrip("https://")
     elif value.startswith("http://"):
-        value = value.replace("http://", '')
+        value = value.lstrip("http://")
     
     if value.endswith('/'):
         value = value[0:-1]
diff --git a/common/utils.py b/common/utils.py
index 0bc708f4..a5b68f4b 100644
--- a/common/utils.py
+++ b/common/utils.py
@@ -62,4 +62,17 @@ def ChoicesDictGenerator(choices_enum):
     for attr in dir(choices_enum):
         if not '__' in attr:
             choices_dict[getattr(choices_enum, attr).value] = getattr(choices_enum, attr).label
-    return choices_dict
\ No newline at end of file
+    return choices_dict
+
+
+def clean_url(url):
+    """
+    strip scheme and querystring of the url.
+    """
+    if url.startswith("https://"):
+        url = url.lstrip("https://")
+    elif url.startswith("http://"):
+        url = url.lstrip("http://")
+    if url.endswith('/'):
+        url = url.rstrip("/")
+    url = url.source.split('?')[0].split('#')[0]
diff --git a/movies/views.py b/movies/views.py
index 408ebaa3..457ebb0e 100644
--- a/movies/views.py
+++ b/movies/views.py
@@ -558,9 +558,9 @@ def click_to_scrape(request):
     if request.method == "POST":
         url = request.POST.get("url")
         if url:
-            from common.scraper import scrape_douban_movie
+            from common.scraper import DoubanMovieScraper
             try:
-                scraped_movie, raw_cover = scrape_douban_movie(url)
+                scraped_movie, raw_cover = DoubanMovieScraper.scrape(url)
             except TimeoutError:
                 return render(request, 'common/error.html', {'msg': _("爬取数据失败😫，请重试")})
             except ValueError: