# python一键电影搜索与下载

## 概述

使用python搜索并爬取豆瓣电影信息,包括评分,主演,导演,类型,上映时间,电影简介等信息,然后再从电影天堂搜索并爬取电影下载链接.


## 准备工作

### 安装python3.6

略

### 安装requests库(用于请求静态页面)

```bash

pip install requests -i https://mirrors.ustc.edu.cn/pypi/web/simple

```

### 安装lxml库(用于解析html文件)

```bash

pip install lxml -i https://mirrors.ustc.edu.cn/pypi/web/simple

```

### 本教程爬取的电影信息来自豆瓣电影,下载链接来自电影天堂

```html

https://movie.douban.com/j/subject_suggest?q=电影名称

http://s.ygdy8.com/plus/so.php?keytype=0&pagesize=10&searchtype=title&keyword=电影名称

```

## 页面分析

### 豆瓣电影搜索

豆瓣电影搜索的链接如下:

```html

https://movie.douban.com/j/subject_suggest?q=电影名称

```

只需要一个参数q,它的值是utf-8编码的电影名称,比如我们要搜索 ***星际穿越*** 相关信息, 其中 ***%e6%98%9f%e9%99%85%e7%a9%bf%e8%b6%8a*** 是 ***星际穿越*** 的url格式的utf-8编码.:

```html

https://movie.douban.com/j/subject_suggest?q=%e6%98%9f%e9%99%85%e7%a9%bf%e8%b6%8a

```

服务器返回的搜索结果是一个json文件 ***subject_suggest.json*** ,如下:

```json

[

{

"episode" : "",

"id" : "1889243",

"img" : "https://img3.doubanio.com/view/photo/s_ratio_poster/public/p2206088801.jpg",

"sub_title" : "Interstellar",

"title" : "星际穿越",

"type" : "movie",

"url" : "https://movie.douban.com/subject/1889243/?suggest=%E6%98%9F%E9%99%85%E7%A9%BF%E8%B6%8A",

"year" : "2014"

},

{

"episode" : "",

"id" : "26263467",

"img" : "https://img3.doubanio.com/view/photo/s_ratio_poster/public/p2445481443.jpg",

"sub_title" : "The Science of Interstellar",

"title" : "《星际穿越》中的科学",

"type" : "movie",

"url" : "https://movie.douban.com/subject/26263467/?suggest=%E6%98%9F%E9%99%85%E7%A9%BF%E8%B6%8A",

"year" : "2014"

},

{

"episode" : "",

"id" : "26255844",

"img" : "https://img3.doubanio.com/view/photo/s_ratio_poster/public/p2519643575.jpg",

"sub_title" : "Interstellar: Nolan's Odyssey",

"title" : "星际穿越：诺兰的奥德赛",

"type" : "movie",

"url" : "https://movie.douban.com/subject/26255844/?suggest=%E6%98%9F%E9%99%85%E7%A9%BF%E8%B6%8A",

"year" : "2014"

}

]

```

共搜索到了3个与 ***星际穿越*** 相关的结果,其中我们需要关注的有:

| key | 含义 |

| :-------: | :--------------: |

| title | 标题 |

| sub_title | 子标题(英文标题) |

| url | 详情链接 |

我们需要再次打开搜索结果中对应的电影详情链接,获取电影的评分,导演,主演,类型,上映时间,简介,影评等信息.

比如我们打开搜索结果的第一项,结果如下:


我们打开它的源码看看(按F12打开调试):


可以看到其head中的一个标签 *** /html/head/script[@type="application/ld+json"] *** 中存放的是一个json文件,这个json中就包含了我们需要的所有电影信息,提取出来如下:

```json

{

"@context": "http://schema.org",

"name": "星际穿越 Interstellar",

"url": "/subject/1889243/",

"image": "https://img3.doubanio.com/view/photo/s_ratio_poster/public/p2206088801.jpg",

"director":

[

{

"@type": "Person",

"url": "/celebrity/1054524/",

"name": "克里斯托弗·诺兰 Christopher Nolan"

}

]

,

"author":

[

{

"@type": "Person",

"url": "/celebrity/1275104/",

"name": "乔纳森·诺兰 Jonathan Nolan"

}

,

{

"@type": "Person",

"url": "/celebrity/1054524/",

"name": "克里斯托弗·诺兰 Christopher Nolan"

}

,

{

"@type": "Person",

"url": "/celebrity/1018568/",

"name": "基普·索恩 Kip Thorne"

}

]

,

"actor":

[

{

"@type": "Person",

"url": "/celebrity/1040511/",

"name": "马修·麦康纳 Matthew McConaughey"

}

,

{

"@type": "Person",

"url": "/celebrity/1048027/",

"name": "安妮·海瑟薇 Anne Hathaway"

}

,

{

"@type": "Person",

"url": "/celebrity/1000225/",

"name": "杰西卡·查斯坦 Jessica Chastain"

}

,

{

"@type": "Person",

"url": "/celebrity/1022593/",

"name": "卡西·阿弗莱克 Casey Affleck"

}

,

{

"@type": "Person",

"url": "/celebrity/1054509/",

"name": "迈克尔·凯恩 Michael Caine"

}

,

{

"@type": "Person",

"url": "/celebrity/1054443/",

"name": "马特·达蒙 Matt Damon"

}

,

{

"@type": "Person",

"url": "/celebrity/1267954/",

"name": "麦肯吉·弗依 Mackenzie Foy"

}

,

{

"@type": "Person",

"url": "/celebrity/1325862/",

"name": "蒂莫西·柴勒梅德 Timothée Chalamet"

}

,

{

"@type": "Person",

"url": "/celebrity/1036407/",

"name": "艾伦·伯斯汀 Ellen Burstyn"

}

,

{

"@type": "Person",

"url": "/celebrity/1027824/",

"name": "约翰·利思戈 John Lithgow"

}

,

{

"@type": "Person",

"url": "/celebrity/1049518/",

"name": "韦斯·本特利 Wes Bentley"

}

,

{

"@type": "Person",

"url": "/celebrity/1201851/",

"name": "大卫·吉雅西 David Gyasi"

}

,

{

"@type": "Person",

"url": "/celebrity/1113911/",

"name": "比尔·欧文 Bill Irwin"

}

,

{

"@type": "Person",

"url": "/celebrity/1010536/",

"name": "托弗·戈瑞斯 Topher Grace"

}

,

{

"@type": "Person",

"url": "/celebrity/1313709/",

"name": "科莱特·沃夫 Collette Wolfe"

}

,

{

"@type": "Person",

"url": "/celebrity/1330971/",

"name": "弗朗西斯·X·麦卡蒂 Francis X. McCarthy"

}

,

{

"@type": "Person",

"url": "/celebrity/1344601/",

"name": "安德鲁·博尔巴 Andrew Borba"

}

,

{

"@type": "Person",

"url": "/celebrity/1004844/",

"name": "乔什·斯图沃特 Josh Stewart"

}

,

{

"@type": "Person",

"url": "/celebrity/1202795/",

"name": "莱雅·卡里恩斯 Leah Cairns"

}

,

{

"@type": "Person",

"url": "/celebrity/1338863/",

"name": "利亚姆·迪金森 Liam Dickinson"

}

,

{

"@type": "Person",

"url": "/celebrity/1274631/",

"name": "杰夫·赫普内尔 Jeff Hephner"

}

,

{

"@type": "Person",

"url": "/celebrity/1045604/",

"name": "伊莱耶斯·加贝尔 Elyes Gabel"

}

,

{

"@type": "Person",

"url": "/celebrity/1018020/",

"name": "布鲁克·史密斯 Brooke Smith"

}

,

{

"@type": "Person",

"url": "/celebrity/1000231/",

"name": "大卫·奥伊罗 David Oyelowo"

}

,

{

"@type": "Person",

"url": "/celebrity/1055380/",

"name": "威廉姆·德瓦内 William Devane"

}

,

{

"@type": "Person",

"url": "/celebrity/1366207/",

"name": "拉什·费加 Russ Fega"

}

,

{

"@type": "Person",

"url": "/celebrity/1344602/",

"name": "格里芬·弗雷泽 Griffen Fraser"

}

,

{

"@type": "Person",

"url": "/celebrity/1344603/",

"name": "弗洛拉·诺兰 Flora Nolan"

}

]

,

"datePublished": "2014-11-07",

"genre": ["\u5267\u60c5", "\u79d1\u5e7b", "\u5192\u9669"],

"duration": "PT2H49M",

"description": "近未来的地球黄沙遍野，小麦、秋葵等基础农作物相继因枯萎病灭绝，人类不再像从前那样仰望星空，放纵想象力和灵感的迸发，而是每日在沙尘暴的肆虐下倒数着所剩不多的光景。在家务农的前NASA宇航员库珀(马修·麦...",

"@type": "Movie",

"aggregateRating": {

"@type": "AggregateRating",

"ratingCount": "638995",

"bestRating": "10",

"worstRating": "2",

"ratingValue": "9.2"

}

}

```

| key | 含义 |

| ---------------------------- | -------- |

| name | 电影名称 |

| director | 电影导演 |

| author | 主要演员 |

| datePublished | 上映时间 |

| genre | 电影类型 |

| description | 电影简介 |

| aggregateRating[ratingValue] | 电影评分 |

### 电影天堂搜索

豆瓣电影搜索的链接如下:

```html

http://s.ygdy8.com/plus/so.php?keytype=0&pagesize=10&searchtype=title&keyword=电影名称

```

只需要一个参数q,它的值是utf-8编码的电影名称,比如我们要搜索 ***星际穿越*** 相关信息. 其中 ***%D0%C7%BC%CA%B4%A9%D4%BD*** 是 ***星际穿越*** 的url格式的gb2312编码::

```html

http://s.ygdy8.com/plus/so.php?keytype=0&keyword=%D0%C7%BC%CA%B4%A9%D4%BD

```

服务器返回的搜索结果是一个html页面其中只有第一项是我们想要的结果,如下:


按F12打开调试可以看到,搜索结果列表包含在一个 ***class="co_content8"*** 的div标签中.搜索结果的标题对应的链接就是电影详情页面,其中无用的广告页面的链接中包含 ***game*** ,我们可以据此过滤掉不想要的结果.




打开电影详情页面,可以看到下载链接包含在一个 ***bgcolor="#fdfddf"*** 的table中:


## 源码详解

### 使用requests下载静态html页面

该函数用于下载图集列表页面，这个页面是静态的，可以直接通过 **requests.get(url)** 函数抓取。但是有一点需要注意，为了把我们的爬虫伪装成正常的浏览器请求，避免我们的爬虫被服务器禁止，我们需要给 **requests** 添加http请求头，其中包含伪造的 **User-Agent** 浏览器标识

```python

def download_page_html(url, sel=0):

phtml = None

page = None

try:

requests_header["Host"] = host_cookie[sel][0]

requests_header["Cookie"] = host_cookie[sel][1]

# 选择一个随机的User-Agent

requests_header["User-Agent"] = random.choice(user_agent_list)

# print(requests_header["User-Agent"])

# print(requests_header)

page = requests.get(url=url, headers=requests_header, timeout=15) # 请求指定的页面

# print(page.encoding)

if page.encoding == "ISO-8859-1":

page.encoding = "gb2312" # 转换页面的编码为gb2312(避免中文乱码)

phtml = page.text # 提取请求结果中包含的html文本

# print("requests success")

except requests.exceptions.RequestException as e:

print("requests error:", e)

phtml = None

finally:

if page != None:

page.close()

return phtml

```

### 从豆瓣电影上搜索并下载电影信息

该函数用于根据指定的电影名称,从豆瓣电影服务器上搜索电影,解析搜索结果并显示,然后根据输入显示指定搜索结果的详情.

```python

def movie_douban(mvsearch_name):

DOUBANMV_SEARCH_URL = "https://movie.douban.com/j/subject_suggest"

DOUBANMV_SEARCH_PAR = {"q": ""}

# mvsearch_name = "星际迷航"

if mvsearch_name == None:

return -1

DOUBANMV_SEARCH_PAR["q"] = mvsearch_name

# url参数编码

mvsearch_par = parse.urlencode(DOUBANMV_SEARCH_PAR, encoding="utf-8")

# print(mvsearch_par)

mvsearch_url = "{0}?{1}".format(DOUBANMV_SEARCH_URL, mvsearch_par)

# print(mvsearch_url)

# 下载指定url

mvsearch_html = download_page_html(mvsearch_url, 2)

if mvsearch_html == None:

print("下载出错,可能IP被服务器封禁,可稍后再试!")

return -1

# 解析下载的结果(json格式)

try:

mvsearch_json = json.loads(mvsearch_html)

except json.JSONDecodeError as e:

print("出现错误:", e)

return -1

if mvsearch_json == None or len(mvsearch_json) == 0:

print("解析出错!")

return -1

# print(mvsearch_json)

# 输出解析结果

print("共找到", len(mvsearch_json), "个关于", mvname, "的结果: ")

for i in range(len(mvsearch_json)):

print("\t", i+1, mvsearch_json[i]["title"],

"/", mvsearch_json[i]["sub_title"])

# 选择需要查看的项

search_sel = input("请选择需要查看的项:")

if search_sel.isdigit() != True:

print("输入有误!")

return -1

search_sel = int(search_sel)

if search_sel > len(mvsearch_json) or search_sel < 1:

print("输入有误!")

return -1

search_sel = search_sel - 1

# 获取需要查看的项的url,下载需要查看的项

mvcontent_url = mvsearch_json[search_sel]["url"]

mvcontent_html = download_page_html(mvcontent_url, 2)

# 解析需要查看的项

doubanmv_etree_html = lxml.html.fromstring(mvcontent_html)

mvcontent_xpath = '/html/head//script[@type="application/ld+json"]/text()'

mvcontent_text = doubanmv_etree_html.xpath(mvcontent_xpath)

if mvcontent_text == None or len(mvcontent_text) == 0:

print("解析出错")

return -1

mvcontent_text[0] = mvcontent_text[0].replace("\n", "") # 替换掉json字符串中的\n

try:

mvcontent_json = json.loads(mvcontent_text[0])

except json.JSONDecodeError as e:

print("解析出错:", e)

return -1

if mvcontent_json == None or len(mvcontent_json) == 0:

print("解析出错")

return -1

# 输出电影详情

print("\t电影名称", mvcontent_json["name"])

# 合并显示电影类型

mvcontent_genre = mvcontent_json["genre"]

mvcontent_genre_str = ""

for lst in mvcontent_genre:

mvcontent_genre_str += (lst + "/")

print("\t电影类型", mvcontent_genre_str)

print("\t上映时间", mvcontent_json["datePublished"])

print("\t豆瓣评分", mvcontent_json["aggregateRating"]["ratingValue"],

"(", mvcontent_json["aggregateRating"]["ratingCount"], ")")

print("\t电影导演", mvcontent_json["director"][0]["name"])

# 合并显示电影主演(只显示前5个)

mvcontent_actor = mvcontent_json["actor"]

mvcontent_actor_str = ""

mvcontent_actor_len = 0

for lst in mvcontent_actor:

mvcontent_actor_str += (lst["name"] + "/")

mvcontent_actor_len += 1

if mvcontent_actor_len > 5:

mvcontent_actor_str += "..."

break

print("\t电影主演", mvcontent_actor_str)

print("\t电影简述", mvcontent_json["description"])

return 0

```

### 从电影天堂上搜索并提取电影下载链接

该函数用于根据指定的电影名称,从电影天堂服务器上搜索电影,解析搜索结果并显示,然后根据输入显示指定搜索结果的下载链接.

```python

def movie_tiantang(mvsearch_name):

MVSEARCH_URL = "http://s.ygdy8.com/plus/so.php"

MVSEARCH_PAR = {"kwtype": "0", "searchtype": "title",

"pagesize": "100", "keyword": ""}

MOVIE_URL = "http://www.ygdy8.com"

# mvsearch_name = "星球大战"

# mvsearch_name = input("请输入电影名称(输入\"exit\"退出):")

if mvsearch_name == None:

print("输入有误!")

return -1

# print("你输入的电影名称为:", mvsearch_name)

# 搜索电影

MVSEARCH_PAR["keyword"] = mvsearch_name

mvsearch_par = parse.urlencode(MVSEARCH_PAR, encoding="gb2312")

# print(mvsearch_par)

mvsearch_url = "{0}?{1}".format(MVSEARCH_URL, mvsearch_par)

# print(mvsearch_url)

mvsearch_html = download_page_html(mvsearch_url, 0)

if mvsearch_html == None:

print("下载出错,可能IP被服务器封禁,可稍后再试!")

return -1

# print(mvsearch_html)

# 获取搜索结果列表

etree_html = lxml.html.fromstring(mvsearch_html)

mvsearch_xpath = '//div[@class="co_content8"]/ul/tr/td/table[@width="100%"]'

mvsearch_list = etree_html.xpath(mvsearch_xpath)

# print(mvsearch_list)

if len(mvsearch_list) == 0:

print("未搜索到任何内容")

return -1

# print("共找到", len(mvsearch_list), "个关于", mvsearch_name, "的结果:")

mvcontent_url = []

mvcontent_title = []

# 提取搜索结果中的电影链接

mvsearch_list_len = len(mvsearch_list)

for idx in range(1, mvsearch_list_len+1):

# 提取链接

mv_title_url = etree_html.xpath(

mvsearch_xpath + '[{0}]//a[@href]/@href'.format(idx))

# print(mv_title_url)

if mv_title_url == None:

print("解析出错!")

return -1

# 过滤掉游戏

if mv_title_url[0].find("/html/game/") < 0:

mv_title_url = "{0}{1}".format(MOVIE_URL, mv_title_url[0])

mvcontent_url.insert(idx-1, mv_title_url)

# 提取标题

mv_title_str_lst = etree_html.xpath(

mvsearch_xpath + '[{0}]//a[@href]//text()'.format(idx))

if mv_title_str_lst == None:

print("解析出错!")

return -1

mv_title_str = "".join(mv_title_str_lst)

mvcontent_title.insert(idx-1, mv_title_str)

# print("\t{0}, {1}, {2}".format(idx, mv_title_str, mv_title_url))

mvcontent_len = len(mvcontent_url)

if mvcontent_len == 0:

print("未搜索到有效结果!")

return -1

# print("其中", mvcontent_len, "个有效结果:")

print("共找到", mvcontent_len, "个关于", mvsearch_name, "的下载:")

for idx in range(mvcontent_len):

print("\t", idx+1, ", ",

mvcontent_title[idx], ", ", mvcontent_url[idx])

# 打开电影详情页面

mvcontent_sel = input("请选择需要下载的项:")

if mvcontent_sel.isdigit() != True:

print("输入有误!")

return -1

mvcontent_sel = int(mvcontent_sel)

if mvcontent_sel > mvcontent_len or mvcontent_sel < 1:

print("输入有误!")

return -1

mvcontent_sel = mvcontent_sel - 1

# 下载电影详情页面

# print("即将下载: ", mvcontent_title[mvcontent_sel],

# ", " + mvcontent_url[mvcontent_sel])

mvcontent_html = download_page_html(mvcontent_url[mvcontent_sel], 1)

# print(mvcontent_html)

if mvcontent_html == None:

print("下载出错,可能IP被服务器封禁,可稍后再试!")

return -1

# 提取电影下载链接

mvcontent_etree_html = lxml.html.fromstring(mvcontent_html)

# '//div[@id="Zoom"]/table/tr/td/table'

mvcontent_xpath = '//td[@bgcolor="#fdfddf"]'

mvcontent_dwurl_lst = []

mvcontent_urllst = mvcontent_etree_html.xpath(

mvcontent_xpath + "//a[@href]/text()")

if mvcontent_urllst == None:

print("解析出错!")

return -1

for url in mvcontent_urllst:

mvcontent_dwurl_lst.append(url)

if mvcontent_dwurl_lst == None:

print("未找到下载链接!")

return -1

# print("共找到", len(mvcontent_dwurl_lst), "个下载链接:")

for dwurl in mvcontent_dwurl_lst:

print("\t", dwurl)

return 0

```

### 程序运行方法

打开命令行,定位到源码所在目录,然后输入 ***python py_movie.py*** ,回车运行

## 程序运行截图



## 项目文件截图