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#软工个人作业——爬虫主程序
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#（结果为文本txt）
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import requests # 发送请求
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import re # 正则表达式，用于数据清洗
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def get_cid(bv_id):
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url = f"https://api.bilibili.com/x/web-interface/view?bvid={bv_id}"
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headers = {
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'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36'
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}
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response = requests.get(url, headers=headers)
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data = response.json()
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if data['code'] == 0:
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return data['data']['cid']
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else:
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print("Error:", data['message'])
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return None
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def get_danmaku(cid):
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url = f'https://api.bilibili.com/x/v1/dm/list.so?oid={cid}'
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headers = {
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'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3',
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'Referer': 'https://www.bilibili.com/'
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}
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cookies = {
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'cookie_name': 'cookie_value' # 请替换为实际的cookie值
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}
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response = requests.get(url, headers=headers, cookies=cookies)
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response.encoding = 'utf-8'
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html_data = response.text
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content_list = re.findall('<d p=".*?">(.*?)</d>', html_data)
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return '\n'.join(content_list)
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def get_search(v_keyword, v_max_page, v_out_file, danmaku_file):
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with open(v_out_file, 'w', encoding='utf-8') as f, open(danmaku_file, 'w', encoding='utf-8') as df:
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video_count = 0
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for page in range(1, v_max_page + 1):
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if video_count >= 300:
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break
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print('开始爬取第{}页'.format(page))
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# 必要的请求地址
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url = 'https://api.bilibili.com/x/web-interface/wbi/search/type'
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headers = {
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'accept': 'application/json, text/plain, */*',
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'accept-encoding': 'gzip, deflate, br',
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'accept-language': 'zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7',
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'cookie': "", # 这里填入自己的cookie
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'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36 Edg/128.0.0.0',
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'referer': "https://search.bilibili.com/all?keyword=2024%E5%B7%B4%E9%BB%8E%E5%A5%A5%E8%BF%90%E4%BC%9A&from_source=webtop_search&spm_id_from=333.1007&search_source=3&page=2&o=24".format(v_keyword),
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'origin': 'https://search.bilibili.com',
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'sec-ch-ua': '"Google Chrome";v="107", "Chromium";v="107", "Not=A?Brand";v="24"',
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'sec-ch-ua-mobile': '?0',
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'sec-ch-ua-platform': '"Windows"',
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'sec-fetch-dest': 'empty',
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'sec-fetch-mode': 'cors',
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'sec-fetch-site': 'same-site'
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}
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# 根据网页获取的请求参数
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params = {
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'category_id':'',
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'search_type': 'video',
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'ad_resource': '5654',
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'__refresh__': 'true',
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'_extra': '',
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'context': '',
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'page': page,
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'page_size': '42',
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'pubtime_begin_s': '0',
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'pubtime_end_s': '0',
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'from_source':'',
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'from_spmid': '333.337',
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'platform': 'pc',
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'highlight': '1',
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'single_column':'0',
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'keyword': '2024巴黎奥运会',
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'qv_id': '1P0f9h8c7OOA9SpNbY7Rs6XaEUa80p13',
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'source_tag': '3',
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'gaia_vtoken':'',
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'dynamic_offset': '24',
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'web_location': '1430654',
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'w_rid': 'e0021a1eb2c68a9df2fec8a5a287352e',
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'wts': '1726311718',
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}
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# 向页面发送请求
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r = requests.get(url, headers=headers, params=params)
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# 查看响应码
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print(r.status_code)
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if r.status_code != 200:
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print(f"请求失败，状态码: {r.status_code}")
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continue
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j_data = r.json()
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if 'data' not in j_data or 'result' not in j_data['data']:
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print("响应中没有找到数据")
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continue
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data_list = j_data['data']['result']
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print('数据长度:', len(data_list))
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for data in data_list:
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if video_count >= 300:
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break
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mid = data['mid']
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bvid = data['bvid']
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cid = get_cid(bvid)
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if cid:
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f.write(f'{mid},{bvid},{cid}\n')
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print(f'mid: {mid}, bvid: {bvid}, cid: {cid}')
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# 获取弹幕并保存到同一个文件中
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danmaku_content = get_danmaku(cid)
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df.write(f'弹幕 for cid {cid}:\n{danmaku_content}\n\n')
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video_count += 1
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else:
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print(f'Failed to get cid for bvid: {bvid}')
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# 调用函数
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get_search('2024巴黎奥运会', 10, 'output.txt', 'all_danmaku.txt')
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