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Using CGI module to create a simple web page tutorial example
Using CGI module to create a simple web page tutorial example
I have been learning python web programming in the past few days. The main content is to build a simple web server and use CGI modules to create simple web pages (Sorry for the unprofessional use of words).
Python has the following three modules for building http server:
1) BaseHTTPServer: Provides basic Web services and processor classes, namely HTTPServer and BaseHTTPRequestHandler;
2) SimpleHTTPServer: Contains the SimpleHTTPRequestHandler class that performs GET and HEAD requests;
3) CGIHTTPServer: Contains the CGIHTTPRequestHandler class that handles POST requests and executes.
python The simplest web server is shown below:
##So you can access the content in the server
For example, access the following html page directly, the results are as follows:
hello.html is stored in the root directory of the server. The code is as follows:
<meta http-equiv='Content-Type' content='text/html; charset=UTF-8'> <html><head><title>数据库列表</title></head> <body> <form action="/cgi-bin/hello_get.py" method="get"> First Name: <input type="text" name="first_name"> <br /> Last Name: <input type="text" name="last_name" /> <input type="submit" value="Submit" /> </form> </body></html>
in hello.html There is a hello_get.py linked in the file, which is stored in the cgi-bin folder in the server root directory. The code is as follows:
#!/usr/bin/python # Import modules for CGI handling import cgi, cgitb # Create instance of FieldStorage form = cgi.FieldStorage() # Get data from fields first_name = form.getvalue('first_name') last_name = form.getvalue('last_name') print "Content-type:text/html\r\n\r\n" print "<html>" print "<head>" print "<title>Hello - Second CGI Program</title>" print "</head>" print "<body>" print "<h2>Hello %s %s</h2>" % (first_name, last_name) print "</body>" print "</html>"
It is worth noting: 1. I did it for a long time at first, but when calling the py file, it either showed blank or an error occurred. After checking a lot of network resources, I found that the problem was caused by the permissions of the py file. You only need to execute chmod 755 XXX.py. In addition
#!/usr/bin/python之前最好不要有其他信息，反正我发现上方保护如下信息的时候是显示不出来的
''' Created on 2015-1-12 @author: root '''
I am just a beginner, so I can only share my learning process to avoid everyone encountering the same problem as me and spending a lot of time.
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