尝试使用Selenium Python自动化凭证代码输入
尝试使用Selenium Python自动化凭证代码输入
提问于 2016-08-28 10:12:17
好了，我今年16岁，是Python的新手。我需要项目来帮助我学习，所以我想出了一个PlayStation +代码生成器作为一个项目，到目前为止它做到了：
如果出现错误，请在索尼网站的账户管理中-Generates a code -Logs at redeem -Enters -Checks处的代码
voucher_box = driver.find_element_by_id("voucherCode")
redeem_button = driver.find_element_by_id("redeemGiftCardButton")
while i < amount:
voucher_box.clear()
currentcode = codegen.codegen()
voucher_box.send_keys(currentcode)
redeem_button.click()
if "The Prepaid Card code you entered is incorrect or is no longer valid" in driver.page_source:
print("Error found")
else:
print("Error not found")
i += 1如果只做一次，它就完全可以工作，但是如果我将数量设置为2，我会得到错误消息"Error found“，然后它会崩溃，并给我这样的结果：
Traceback (most recent call last):
File "C:/Users/M4SS3CR3/PycharmProjects/UKP/main.py", line 38, in <module>
voucher_box.clear()
File "C:\Users\M4SS3CR3\AppData\Local\Programs\Python\Python35-32\lib\site-packages\selenium\webdriver\remote\webelement.py", line 87, in clear
self._execute(Command.CLEAR_ELEMENT)
File "C:\Users\M4SS3CR3\AppData\Local\Programs\Python\Python35-32\lib\site-packages\selenium\webdriver\remote\webelement.py", line 461, in _execute
return self._parent.execute(command, params)
File "C:\Users\M4SS3CR3\AppData\Local\Programs\Python\Python35-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 236, in execute
self.error_handler.check_response(response)
File "C:\Users\M4SS3CR3\AppData\Local\Programs\Python\Python35-32\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 192, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.StaleElementReferenceException: Message: Element not found in the cache - perhaps the page has changed since it was looked up
Stacktrace:
at fxdriver.cache.getElementAt (resource://fxdriver/modules/web-element-cache.js:9454)
at Utils.getElementAt (file:///C:/Users/M4SS3CR3/AppData/Local/Temp/tmpn3rxlnty/extensions/fxdriver@googlecode.com/components/command-processor.js:9039)
at fxdriver.preconditions.visible (file:///C:/Users/M4SS3CR3/AppData/Local/Temp/tmpn3rxlnty/extensions/fxdriver@googlecode.com/components/command-processor.js:10090)
at DelayedCommand.prototype.checkPreconditions_ (file:///C:/Users/M4SS3CR3/AppData/Local/Temp/tmpn3rxlnty/extensions/fxdriver@googlecode.com/components/command-processor.js:12644)
at DelayedCommand.prototype.executeInternal_/h (file:///C:/Users/M4SS3CR3/AppData/Local/Temp/tmpn3rxlnty/extensions/fxdriver@googlecode.com/components/command-processor.js:12661)
at DelayedCommand.prototype.executeInternal_ (file:///C:/Users/M4SS3CR3/AppData/Local/Temp/tmpn3rxlnty/extensions/fxdriver@googlecode.com/components/command-processor.js:12666)
at DelayedCommand.prototype.execute/< (file:///C:/Users/M4SS3CR3/AppData/Local/Temp/tmpn3rxlnty/extensions/fxdriver@googlecode.com/components/command-processor.js:12608)任何帮助或建议将不胜感激，我道歉之前，如果这是不够详细。
回答 1
Stack Overflow用户
回答已采纳
发布于 2016-08-28 11:06:46
这是我在评论中提到的想法
while i < amount:
try:
counter = 0
# make sure that the elements can be found
# try ten times and then break out of loop
while counter < 10:
try:
voucher_box = driver.find_element_by_id("voucherCode")
redeem_button = driver.find_element_by_id("redeemGiftCardButton")
break
except:
time.sleep(1)
counter += 1
voucher_box.clear()
currentcode = codegen.codegen()
voucher_box.send_keys(currentcode)
redeem_button.click()
if "The Prepaid Card code you entered is incorrect or is no longer valid" in driver.page_source:
print("Error found")
else:
print("Error not found")
i += 1
driver.get("my page") # may not need this line because the elements were moved inside the while loop
time.sleep(3) # give the page enough time to load
except:
pass您还可以执行类似于html.find( ID ) >-1的操作:执行页面上没有的其他操作，因此退出或重新加载。更重要的是，搬家可能更好。
voucher_box = driver.find_element_by_id("voucherCode")
redeem_button = driver.find_element_by_id("redeemGiftCardButton")在while循环中，因为这样对象就是每个循环中正确的对象。可能发生的情况是，您正在使用属于不同dom的元素。
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原文链接：
https://stackoverflow.com/questions/39187438
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