我有与由python脚本处理的登录表单的网页。当我进入未在数据库中发现一个名字，它重定向到一个login_or_signup.html页面。当我输入一个名称，在数据库中，是应该重定向到一个“next_page.html”页，但它显示了一些代码。为什么它的工作的一种方式，而不是其他？ （我已经改变了它去login_or_signup.html页面两种方式，它是双向的。
Python代码
#! /usr/bin/python
import cgi
import cgitb
import mysql.connector as conn
import passlib
from passlib.hash import argon2
import logging
cgitb.enable(logdir="/var/www/html",
display=False,
format='text',
)
logging.basicConfig(level=logging.INFO)
def basic_top(data):
print """Content-type:text/html\n\n
<DOCTYPE html>
<html lang=en">
<head>
<meta charset= utf-8/>
<title>Basic Version</title>
</head>
<body>"""
for d in data:
print d
print
def go_back_top(data):
redirectURL = "%s" % "/login_or_signup.html"
try:
print """Content-type:text/html\n\n
Location: %s""" % redirectURL
print """<DOCTYPE html>
<html lang="en">
<head>
<meta charset= utf-8/>"""
print " <meta http-equiv='refresh' content='0;url=%s' />" % redirectURL
print """ <title>Login</title>
</head>\n\n
<body>"""
#for d in data:
# print d
# print
print ' Redirecting... <a href="%s">Click here if you are not redirected</a>' % redirectURL
except:
cgi.print_exception()
print "An error occured\n\n"
print"<PRE>"
cgitb.print_exc()
def go_forwards_top(data):
redirectURL = "%s" % "/login_or_signup.html" #/next_page.html"
try:
print """Content-type:text/html\n\n
Location: %s""" % redirectURL
print """<DOCTYPE html>
<html lang="en">
<head>
<meta charset= utf-8/>"""
print " <meta http-equiv='refresh' content='0;url=%s' />" % redirectURL
print """ <title>Login</title>
</head>\n\n
<body>"""
print ' Redirecting... <a href="%s">Click here if you are not redirected</a>' % redirectURL
except:
cgi.print_exception()
print "An error occured\n\n"
print"<PRE>"
cgitb.print_exc()
def htmlTail():
print "</body>"
print "</html>"
def getData():
formdata = cgi.FieldStorage()
username = formdata.getvalue("username")
password = formdata.getvalue("password")
login_type = formdata.getvalue("type")
if login_type == "signup":
password_copy = formdata.getvalue("password_copy")
return username, password, password_copy, login_type
else:
return username, password, login_type
def connectDB():
db = conn.connect(user='basic_user', password='twathead', host='127.0.0.1', db="exampleDB")
cursor = db.cursor()
logging.info(cursor)
return db, cursor
def check_person(cursor, data):
username = data[0]
sql_str = "SELECT * FROM people WHERE username = '%s'" % (username)
cursor.execute(sql_str)
person = cursor.fetchone()
if person is None:
go_back_top(data)
else:
go_forwards_top(data)
#logging.info(str(conn))
#conn.close()
if __name__=="__main__":
logging.basicConfig(filename='/usr/lib/cgi-bin/example.log', level=logging.INFO)
logging.info('This message should go to the log file')
#data = ("John", "Smith")
data = getData()
#basic_top(data)
#print "login type = "
#print data[0]
db, cursor = connectDB()
check_person(cursor, data)
HTML代码next_page：
<DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<link rel="stylesheet" type="text/css" href="mystyle.css">
<title>Post Login</title>
</head>
<body style="background-color:powderblue;">
<h2>This page is currently under construction.<h2>
</body>
</html>
开端子，类型：
服务Apache的htcacheclean重启