Python automation Test (ix) URLLIB2 send HTTP Request

The URLLIB2 is a standard module that comes with Python and is used to send HTTP request. Similar to. NET, the HttpWebRequest class

Advantages of URLLIB2

The HTTP request sent by Python Urllib2 can be intercepted automatically by fiddler, which facilitates debugging.

Python can automatically process cookies

Disadvantages of URLLIB2

The header in the HTTP request sent by Python Urllib2 will be changed to "capitalize"

For example, your code is written in the header: Content-type=application/x-www-form-urlencoded, will be modified to content-type=application/ x-www-form-urlencoded

Instance one, get method, and custom header

#-*-Coding:utf-8-*-Importurllib2request= Urllib2. Request ("http://www.baidu.com/") Request.add_header ('Content-type','application/x-www-form-urlencoded') Response=Urllib2.urlopen (Request)PrintResponse.getcode ()PrintResponse.geturl ()PrintResponse.read ()

Example two, POST method

#-*-Coding:utf-8-*-ImportUrllib2Importurllibrequest= Urllib2. Request ("http://passport.cnblogs.com/login.aspx") Request.add_header ('Content-type','application/x-www-form-urlencoded') Data={"Tbusername":"Test_username","Tbpassword":"Test_password"}response=Urllib2.urlopen (Request, Urllib.urlencode (data))PrintResponse.getcode ()PrintResponse.geturl ()PrintResponse.read ()

Example three: processing of cookies

#-*-Coding:utf-8-*-ImportUrllib2ImportUrllibImportCOOKIELIBCJ=Cookielib. Cookiejar () opener=Urllib2.build_opener (urllib2. Httpcookieprocessor (CJ) Request= Urllib2. Request ("https://dynamic.12306.cn/otsweb/") Request.add_header ('Content-type','application/x-www-form-urlencoded') Data={"Tbusername":"Test_username","Tbpassword":"Test_password"}response=Opener.open (Request, Urllib.urlencode (data))#send again, you'll see cookies sent to Web serverResponse =Opener.open (Request, Urllib.urlencode (data))PrintResponse.getcode ()PrintResponse.geturl ()PrintResponse.read ()

Example four: How to handle jumps

When creating opener, Ul2. Httpredirecthandler is one of the handler that is added by default

Python automation Test (ix) URLLIB2 send HTTP Request