def login():
""" 设置cookie"""
cookiefile ="./cookies.txt"
cookies = cookielib.MozillaCookieJar(cookiefile)
try:
"""加载已存在的cookie，尝试此cookie是否还有效""" cookies.load(ignore_discard=True, ignore_expires=True) except Exception:
# print Exception.message,e
"""加载失败，说明从未登录过，需创建一个cookie kong 文件""" cookies.save(cookiefile,ignore_discard=True, ignore_expires=True) """将cookie带入到open中"""
pener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookies))
""""loginprofile"""
url="http://"+Domain+"/core/loginprofile"
dada=urllib.urlencode({"profile":profile,"password":password})
"""用带有cookie文件的open打开url"""
response = opener.open(urllib2.Request(url),dada)
html=response.read()
root=readXML(html)
result=root.find("command/result")
secretqn=root.find("command/message")
# print result.text,secretqn
if result.text=='0':
print root.find("command/message").text
return -1
if result.text=='1':
"""打开能获取cookie的页面后，保存该页面有内容的cookie，比如登录成功后保存登录成功后的cookie""" cookies.save(cookiefile,ignore_discard=True, ignore_expires=True) response.close()
return cookies #保存成功后将cookie参数传出。
其他地方调用:
cookies=login()
inputValue={a:"b0",c:"dd"}
url='www.wuling.com/login'
opener =urllib2.build_opener(urllib2.HTTPCookieProcessor(cookies))
dada=urllib.urlencode(inputValue)
response = opener.open(urllib2.Request(url),dada)
本函数中用的cookie是MozillaCookieJar的一个实例，MozillaCookieJar继承自FileCookieJar,FileCookieJar也有save方法，但是FileCookieJar是基类(subclasses)，只提供接口，没有提供实现，所以要想保存cookie，要么用MozillaCookieJar的save方法，要么用
LWPCookieJar的save.
FileCookieJar.save原型：
def save(self, filename=None, ignore_discard=False, ignore_expires=False):
"""Save cookies to a file."""
raise NotImplementedError()
MozillaCookieJar.save原型：
def save(self, filename=None, ignore_discard=False, ignore_expires=False):
if filename is None:
if self.filename is not None: filename = self.filename
else: raise ValueError(MISSING_FILENAME_TEXT)
f = open(filename, "w")
try:
f.write(self.header)
now = time.time()
for cookie in self:
if not ignore_discard and cookie.discard:
continue
if not ignore_expires and cookie.is_expired(now):
continue
if cookie.secure: secure = "TRUE"
else: secure = "FALSE"
if cookie.domain.startswith("."): initial_dot = "TRUE"
else: initial_dot = "FALSE"
if cookie.expires is not None:
expires = str(cookie.expires)
else:
expires = ""
if cookie.value is None:
# cookies.txt regards 'Set-Cookie: foo' as a cookie
# with no name, whereas cookielib regards it as a
# cookie with no value.
name = ""
value = cookie.name
else:
name = cookie.name
value = cookie.value
f.write(
"\t".join([cookie.domain, initial_dot, cookie.path,
secure, expires, name, value])+
"\n")
finally:
f.close()
LWPCookieJar.save原型：
def save(self, filename=None, ignore_discard=False, ignore_expires=False):
if filename is None:
if self.filename is not None: filename = self.filename
else: raise ValueError(MISSING_FILENAME_TEXT)
f = open(filename, "w")
try:
# There really isn't an LWP Cookies 2.0 format, but this indicates
# that there is extra information in here (domain_dot and
# port_spec) while still being compatible with libwww-perl, I hope.
f.write("#LWP-Cookies-2.0\n")
f.write(self.as_lwp_str(ignore_discard, ignore_expires))
finally:
f.close()
