\u67e5\u627e\u6240\u6709\u7684\u94fe\u63a5<\/strong><\/h2>\nlinks = soup.find_all('a')<\/p>\n
for link in links:<\/p>\n
print(link.get('href'))<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528BeautifulSoup<\/code>\u89e3\u6790HTML\u5185\u5bb9\uff0c\u5e76\u4f7f\u7528soup.find_all('a')<\/code>\u67e5\u627e\u6240\u6709\u94fe\u63a5\u3002<\/p>\n<\/p>\n\u4e09\u3001\u5904\u7406\u8bf7\u6c42\u5934\u548cCookies<\/p>\n<\/p>\n
\u6709\u65f6\u5019\uff0c\u7b80\u5355\u7684GET\u8bf7\u6c42\u53ef\u80fd\u65e0\u6cd5\u83b7\u53d6\u6240\u9700\u7684\u7f51\u9875\u6570\u636e\uff0c\u8fd9\u65f6\u9700\u8981\u6a21\u62df\u6d4f\u89c8\u5668\u7684\u8bf7\u6c42\u5934\u6216\u5904\u7406Cookies\u3002<\/p>\n<\/p>\n
\n- \u8bbe\u7f6e\u8bf7\u6c42\u5934<\/strong><\/li>\n<\/ol>\n
\u6709\u4e9b\u7f51\u7ad9\u53ef\u80fd\u4f1a\u62d2\u7edd\u6ca1\u6709\u6b63\u786e\u8bf7\u6c42\u5934\u7684\u8bf7\u6c42\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7requests.get()<\/code>\u65b9\u6cd5\u7684headers<\/code>\u53c2\u6570\u8bbe\u7f6e\u8bf7\u6c42\u5934\uff1a<\/p>\n<\/p>\nheaders = {<\/p>\n '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'<\/p>\n
}<\/p>\n
response = requests.get(url, headers=headers)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\n- \u5904\u7406Cookies<\/strong><\/li>\n<\/ol>\n
Requests\u5e93\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7b80\u5355\u7684\u65b9\u6cd5\u6765\u5904\u7406Cookies\uff1a<\/p>\n<\/p>\n
cookies = {<\/p>\n 'session_id': 'example_cookie_value'<\/p>\n
}<\/p>\n
response = requests.get(url, headers=headers, cookies=cookies)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u8bbe\u7f6e\u8bf7\u6c42\u5934\u548cCookies\uff0c\u4f60\u53ef\u4ee5\u6a21\u62df\u6d4f\u89c8\u5668\u884c\u4e3a\uff0c\u4f7f\u8bf7\u6c42\u66f4\u63a5\u8fd1\u4e8e\u771f\u5b9e\u7528\u6237\u7684\u8bbf\u95ee\u3002<\/p>\n<\/p>\n
\u56db\u3001\u5904\u7406\u5206\u9875\u548c\u52a8\u6001\u5185\u5bb9<\/p>\n<\/p>\n
\u6709\u4e9b\u7f51\u7ad9\u5185\u5bb9\u5206\u5e03\u5728\u591a\u4e2a\u5206\u9875\u4e0a\uff0c\u6216\u8005\u9700\u8981\u6267\u884cJavaScript\u4ee3\u7801\u6765\u52a8\u6001\u52a0\u8f7d\u6570\u636e\u3002<\/p>\n<\/p>\n
\n- \u5904\u7406\u5206\u9875<\/strong><\/li>\n<\/ol>\n
\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u6539\u53d8URL\u53c2\u6570\u6765\u8bf7\u6c42\u4e0d\u540c\u7684\u9875\u9762\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
for page in range(1, 10):<\/p>\n paginated_url = f"http:\/\/example.com\/page\/{page}"<\/p>\n
response = requests.get(paginated_url)<\/p>\n
# \u89e3\u6790\u548c\u5904\u7406\u9875\u9762\u5185\u5bb9<\/p>\n
<\/code><\/pre>\n<\/p>\n
\n- \u5904\u7406\u52a8\u6001\u5185\u5bb9<\/strong><\/li>\n<\/ol>\n
\u5982\u679c\u7f51\u9875\u901a\u8fc7JavaScript\u52a8\u6001\u52a0\u8f7d\u5185\u5bb9\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u4f7f\u7528\u5de5\u5177\u5982Selenium\u6765\u6a21\u62df\u6d4f\u89c8\u5668\u73af\u5883\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u4fdd\u5b58\u548c\u5b58\u50a8\u6293\u53d6\u7684\u6570\u636e<\/p>\n<\/p>\n
\u6293\u53d6\u5230\u7684\u6570\u636e\u901a\u5e38\u9700\u8981\u5b58\u50a8\u5728\u6587\u4ef6\u6216\u6570\u636e\u5e93\u4e2d\uff0c\u4ee5\u4fbf\u540e\u7eed\u5206\u6790\u548c\u4f7f\u7528\u3002<\/p>\n<\/p>\n
\n- \u4fdd\u5b58\u5230\u6587\u4ef6<\/strong><\/li>\n<\/ol>\n
\u53ef\u4ee5\u4f7f\u7528Python\u5185\u7f6e\u7684\u6587\u4ef6\u64cd\u4f5c\u529f\u80fd\u5c06\u6570\u636e\u4fdd\u5b58\u5230\u6587\u4ef6\u4e2d\uff1a<\/p>\n<\/p>\n
with open('data.txt', 'w', encoding='utf-8') as file:<\/p>\n file.write(response.text)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\n- \u5b58\u50a8\u5230\u6570\u636e\u5e93<\/strong><\/li>\n<\/ol>\n
\u53ef\u4ee5\u4f7f\u7528\u6570\u636e\u5e93\u5e93\u5982sqlite3\u6216SQLAlchemy\u5c06\u6570\u636e\u5b58\u50a8\u5230\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n<\/p>\n
import sqlite3<\/p>\nconn = sqlite3.connect('data.db')<\/p>\n
cursor = conn.cursor()<\/p>\n
\u521b\u5efa\u8868<\/strong><\/h2>\ncursor.execute('''CREATE TABLE IF NOT EXISTS webpages (id INTEGER PRIMARY KEY, content TEXT)''')<\/p>\n
\u63d2\u5165\u6570\u636e<\/strong><\/h2>\ncursor.execute('INSERT INTO webpages (content) VALUES (?)', (response.text,))<\/p>\n
conn.commit()<\/p>\n
conn.close()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u516d\u3001\u5904\u7406\u5f02\u5e38\u548c\u9519\u8bef<\/p>\n<\/p>\n
\u5728\u6293\u53d6\u8fc7\u7a0b\u4e2d\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u5404\u79cd\u5f02\u5e38\u548c\u9519\u8bef\uff0c\u9700\u8981\u59a5\u5584\u5904\u7406\u3002<\/p>\n<\/p>\n
\n- \u5904\u7406\u8bf7\u6c42\u5f02\u5e38<\/strong><\/li>\n<\/ol>\n
\u53ef\u4ee5\u4f7f\u7528try-except\u5757\u6765\u6355\u83b7\u8bf7\u6c42\u5f02\u5e38\uff1a<\/p>\n<\/p>\n
try:<\/p>\n response = requests.get(url, headers=headers)<\/p>\n
response.raise_for_status() # \u68c0\u67e5\u8bf7\u6c42\u662f\u5426\u6210\u529f<\/p>\n
except requests.exceptions.RequestException as e:<\/p>\n
print(f"An error occurred: {e}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\n- \u5904\u7406\u89e3\u6790\u9519\u8bef<\/strong><\/li>\n<\/ol>\n
\u540c\u6837\u5730\uff0c\u53ef\u4ee5\u6355\u83b7\u89e3\u6790\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u51fa\u73b0\u7684\u9519\u8bef\uff1a<\/p>\n<\/p>\n
try:<\/p>\n soup = BeautifulSoup(response.text, 'lxml')<\/p>\n
except Exception as e:<\/p>\n
print(f"Failed to parse HTML: {e}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u4ee5\u4e0a\u6b65\u9aa4\uff0c\u4f60\u53ef\u4ee5\u9ad8\u6548\u5730\u4f7f\u7528Python\u6293\u53d6\u9759\u6001\u7f51\u9875\uff0c\u5e76\u5c06\u6293\u53d6\u7684\u6570\u636e\u7528\u4e8e\u5404\u79cd\u5e94\u7528\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n \u5982\u4f55\u4f7f\u7528Python\u6293\u53d6\u9759\u6001\u7f51\u9875\u7684\u57fa\u672c\u6b65\u9aa4\u662f\u4ec0\u4e48\uff1f<\/strong>
\u6293\u53d6\u9759\u6001\u7f51\u9875\u7684\u57fa\u672c\u6b65\u9aa4\u5305\u62ec\uff1a\u9996\u5148\uff0c\u4f7f\u7528Python\u7684requests\u5e93\u53d1\u9001HTTP\u8bf7\u6c42\u4ee5\u83b7\u53d6\u7f51\u9875\u5185\u5bb9\u3002\u63a5\u4e0b\u6765\uff0c\u5229\u7528Beautiful Soup\u7b49\u5e93\u89e3\u6790HTML\u6587\u6863\uff0c\u63d0\u53d6\u6240\u9700\u7684\u6570\u636e\u3002\u6700\u540e\uff0c\u53ef\u4ee5\u5c06\u63d0\u53d6\u7684\u6570\u636e\u4fdd\u5b58\u5230\u672c\u5730\u6587\u4ef6\u6216\u6570\u636e\u5e93\u4e2d\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u7b80\u5355\u9ad8\u6548\uff0c\u9002\u5408\u5904\u7406\u4e0d\u9700\u8981\u590d\u6742\u4ea4\u4e92\u7684\u9759\u6001\u7f51\u9875\u3002<\/p>\n\u6293\u53d6\u9759\u6001\u7f51\u9875\u65f6\uff0c\u5982\u4f55\u5904\u7406\u7f51\u9875\u4e2d\u7684\u94fe\u63a5\u548c\u56fe\u7247\uff1f<\/strong>
\u5728\u6293\u53d6\u9759\u6001\u7f51\u9875\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7Beautiful Soup\u63d0\u53d6\u7f51\u9875\u4e2d\u7684\u6240\u6709\u94fe\u63a5\u548c\u56fe\u7247\u3002\u4f7f\u7528find_all<\/code>\u65b9\u6cd5\u53ef\u4ee5\u83b7\u53d6\u6240\u6709\u7684<a><\/code>\u6807\u7b7e\u548c<img><\/code>\u6807\u7b7e\uff0c\u8fdb\u800c\u63d0\u53d6href<\/code>\u548csrc<\/code>\u5c5e\u6027\u7684\u503c\u3002\u8fd9\u4e9b\u94fe\u63a5\u548c\u56fe\u7247\u5730\u5740\u53ef\u4ee5\u8fdb\u4e00\u6b65\u5904\u7406\uff0c\u6bd4\u5982\u4e0b\u8f7d\u56fe\u7247\u6216\u8bbf\u95ee\u94fe\u63a5\u3002<\/p>\n\u5bf9\u4e8e\u521d\u5b66\u8005\uff0c\u63a8\u8350\u54ea\u4e9bPython\u5e93\u6765\u6293\u53d6\u9759\u6001\u7f51\u9875\uff1f<\/strong>
\u5bf9\u4e8e\u521d\u5b66\u8005\uff0c\u63a8\u8350\u4f7f\u7528requests\u5e93\u8fdb\u884cHTTP\u8bf7\u6c42\uff0c\u4ee5\u53caBeautiful Soup\u5e93\u8fdb\u884cHTML\u89e3\u6790\u3002\u8fd9\u4e24\u4e2a\u5e93\u529f\u80fd\u5f3a\u5927\u4e14\u6613\u4e8e\u5b66\u4e60\uff0c\u53ef\u4ee5\u5e2e\u52a9\u7528\u6237\u5feb\u901f\u4e0a\u624b\u7f51\u9875\u6293\u53d6\u3002\u8fd8\u6709\u5176\u4ed6\u5e93\u5982lxml\u548cScrapy\u4e5f\u53ef\u4ee5\u6839\u636e\u9700\u8981\u8fdb\u884c\u6df1\u5165\u5b66\u4e60\uff0c\u4f46\u521d\u5b66\u8005\u53ef\u4ee5\u4ecerequests\u548cBeautiful Soup\u5f00\u59cb\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u8981\u6293\u53d6\u9759\u6001\u7f51\u9875\uff0cPython\u63d0\u4f9b\u4e86\u591a\u79cd\u5e93\u548c\u5de5\u5177\uff0c\u5982Requests\u3001BeautifulSoup\u3001lxml\u7b49\u3002\u4f7f […]","protected":false},"author":3,"featured_media":1000009,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1000000"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1000000"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1000000\/revisions"}],"predecessor-version":[{"id":1000011,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1000000\/revisions\/1000011"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1000009"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1000000"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1000000"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1000000"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"python\u5982\u4f55\u6293\u53d6\u9759\u6001\u7f51\u9875\"](\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25074753\/4b4b098a-5bd6-4609-bd69-cce1787666cb.webp\")
<\/p>\n