下载它我尝试使用requests
和BeautifulSoup
模块从google.scholar.com
下载页面。网址是https://scholar.google.com/citations?mauthors=computer+science&hl=en&view_op=search_authors。当我将网址复制到Chrome时,我可以查看该页面。但是,如果我尝试使用requests
下载它,它让我404 NOT FOUND error
:为什么我可以在浏览器中查看页面,但可以使用代码使用URL
<!DOCTYPE html>
<html lang="en">
<head><meta charset="utf-8"/>
<meta content="initial-scale=1, minimum-scale=1, width=device-width" name="viewport"/>
<title>Error 404 (Not Found)!!1</title>
<style>
*{margin:0;padding:0}html,code{font:15px/22px arial,sans-serif}html{background:#fff;color:#222;padding:15px}body{margin:7% auto 0;max-width:390px;min-height:180px;padding:30px 0 15px}* > body{background:url(//www.google.com/images/errors/robot.png) 100% 5px no-repeat;padding-right:205px}p{margin:11px 0 22px;overflow:hidden}ins{color:#777;text-decoration:none}a img{border:0}@media screen and (max-width:772px){body{background:none;margin-top:0;max-width:none;padding-right:0}}#logo{background:url(//www.google.com/images/branding/googlelogo/1x/googlelogo_color_150x54dp.png) no-repeat;margin-left:-5px}@media only screen and (min-resolution:192dpi){#logo{background:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) no-repeat 0% 0%/100% 100%;-moz-border-image:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) 0}}@media only screen and (-webkit-min-device-pixel-ratio:2){#logo{background:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) no-repeat;-webkit-background-size:100% 100%}}#logo{display:inline-block;height:54px;width:150px}
</style>
</head><body><a href="//www.google.com/"><span aria-label="Google" id="logo"></span></a>
<p><b>404.</b> <ins>That’s an error.</ins>
</p><p>The requested URL <code>/citations</code> was not found on this server. <ins>That’s all we know.</ins>
</p></body></html>
剧本,除了报头(因为它是太长),下载页面
url = "https://scholar.google.com/citations?mauthors=computer+science&hl=en&view_op=search_authors"
for i in range(1200):
r = requests.get(url, headers=headers)
soup = BeautifulSoup(r.content, "lxml")
print soup
莫非任何人都可以帮助我?
嗨,你会被封锁吗?我尝试更改User-Agent并在头文件中添加一些内容,但1分钟后仍然被阻止 – dashenswen
不,我没有被阻止。一切对我来说都很好。你能再试一次并粘贴你的错误吗? –
他们返回一份文件并提示他们认为这是一项不寻常的要求。所以我被封锁了。我的朋友在10-20秒之间发送随机超时。 10分钟后,他也被封锁了......但我确实检查了你的代码。如果你运行1000次,会发生 – dashenswen