我想让我的脚本从www.subscene.com下载字幕。问题是网页上的下载按钮是用java制作的,由于某种原因我即使提取URL也无法下载字幕。
我认为这是下载按钮的代码:
<a id="s_lc_bcr_downloadLink" class="downloadLink rating0" href="javascript:WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions("s$lc$bcr$downloadLink", "", true, "", "/english/How-I-Met-Your-Mother-Seventh-Season/subtitle-482407-dlpath-90698/zip.zipx", false, true))">Download English Subtitle</a><a id="s_lc_bcr_previewLink" href="javascript:togglePreview(482407, 'zip');">(See preview)</a>
所以我提取网址并告诉我的脚本下载它:
urllib.urlretrieve('http://subscene.com/english/How-I-Met-Your-Mother-Seventh-Season/subtitle-482407-dlpath-90698/zip.zipx','c:\\sub.zip')
(添加'http://subscene.com')
但由于某种原因,它没有下载正确的文件。我该怎么办?
编辑:
非常感谢!不幸的是,我无法让它工作:(它说以下
from selenium import webdriver
browser = webdriver.Firefox()
browser.execute_script('WebForm_DoPostBackWithOptions(newWebForm_PostBackOptions("s$lc$bcr$downloadLink", "", true, "", "/english/How-I-Met-Your-Mother-Seventh-Season/subtitle-482407-dlpath-90698/zip.zipx", false, true))')
Traceback (most recent call last):
File "<pyshell#2>", line 1, in <module>
browser.execute_script('WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions("s$lc$bcr$downloadLink", "", true, "", "/english/How-I-Met-Your-Mother-Seventh-Season/subtitle-482407-dlpath-90698/zip.zipx", false, true))')
File "C:\Users\User\AppData\Roaming\Python\Python27\site-packages\selenium\webdriver\remote\webdriver.py", line 385, in execute_script{'script': script, 'args':converted_args})['value']
File "C:\Users\User\AppData\Roaming\Python\Python27\site-packages\selenium\webdriver\remote\webdriver.py", line 153, in execute
self.error_handler.check_response(response)
File "C:\Users\User\AppData\Roaming\Python\Python27\site-packages\selenium\webdriver\remote\errorhandler.py", line 126, in check_response
raise exception_class(message, screen, stacktrace)
WebDriverException: Message: ''
答案 0 :(得分:4)
正如约翰所说这不是文件而是javascript代码。因此,您不必使用urllib.urlretrieve获取该文件,而是可以执行依次下载文件的javascript。这可以使用selenium模块完成 -
from selenium import webdriver
browser = webdriver.Firefox()
browser.get('http://subscene.com/english/How-I-Met-Your-Mother-Seventh-Season/subtitle-482407.aspx')
browser.execute_script('WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions("s$lc$bcr$downloadLink", "", true, "", "/english/How-I-Met-Your-Mother-Seventh-Season/subtitle-482407-dlpath-90698/zip.zipx", false, true))')
raw_input()
我使用Firebug获得了这个javascript片段。