Verification code is the natural enemy of automation? Let's see how Ali P7 solved it

01、 Verification Code

1、 What is a captcha ：

A randomly generated message （ Numbers 、 Letter 、 Chinese characters 、 picture 、 problem in arithmetic ） In order to prevent malicious request behavior , Increase the security of the application

Registration or login is also required in the automation process , So you need to deal with validation

2、 Verification code processing method ：

• Remove the captcha

  Operated by the developer , Used in the test environment

  This is the easiest way , For developers , Just comment out the relevant code of the verification code , If it's in a test environment , This saves testers a lot of trouble , If the automation script is to run in a formal environment , This brings certain risks to the system .

• Set universal verification code

  Operated by the developer , Generally, it is only used in the test environment

• Verification code identification technology

  Because of the technical difficulty , Recognition rate is difficult to achieve 100%, Records are generally not recommended COOKIE Pass record cookie To skip the login operation

• Sure adopt add_cookie() Method Write the user name and password to the browser cookie, When you visit the website again, the server reads the browser directly Cookie Sign in

02、Cookie

1、Cookie principle

Cookie By Web Server generated , And a small text file saved in the user's browser , It can contain user related information

• Cookie data format ： Key value pairs make up （python Dictionary in ）

• Cookie produce ：

  The client requests the server , If the server needs to record the user status , Just give the client browser a Cookie data

• Cookie Use ：

  When the browser requests the site again , The browser combines the requested data with Cookie Submit the data to the server together , Server check Cookie, To identify user status

2、Selenium operation cookie

• driver.get_cookie(name)  Gets the name of the cookie Information , Back is a dictionary

• driver.get_cookies()  What you get is all cookie Information about , It returns a list

• driver.add_cookie(dict_cookie)  Add... To the browser driver cookie,dict_cookie It's a dictionary

Take Baidu for example

BDUSS Is the only identity certificate after login Baidu (*.baidu.com), Get BDUSS It's like taking control of the account , Post Bar 、 know 、 Encyclopedias 、 library 、 Space 、 Baidu cloud and other major products of Baidu .

• Sign in baidu, Grab after successful login (BDUSS)

• Use add_cookie() Method , add to () Key and value

• Call the refresh method  driver.refresh()

How to get BDUSS Value ？（ Grab the bag to realize ）

adopt fiddler Tools After bag grabbing , obtain BDUSS

If the bag grabbing tool is inconvenient , Sure Search through the browser cookie Information

• Click on chrome Browser settings

• Enter... In the settings search cookie

• View all cookie And website data

• Search Baidu domain name ：baidu.com

• obtain BDUSS

Code implementation

After refresh , Result display

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Learning resource sharing

Finally, thank everyone who reads my article carefully , Watching the rise and attention of fans all the way , Reciprocity is always necessary , Although it's not very valuable , If you can use it, you can take it

These materials , For doing 【 software test 】 For our friends, it should be the most comprehensive and complete war preparation warehouse , This warehouse also accompanied me through the most difficult journey , I hope it can help you ！ Everything should be done as soon as possible , Especially in the technology industry , We must improve our technical skills . I hope that's helpful …….