Python 获取SVN资源(不知道realm时)

由于工作需要，要获取SVN资源，其实SVN也是通过HTTP协议获取的，所以使用Python的urllib2库。

此时我也不知道协议的realm，目前为止，我都不知道realm这个字段是做什么用的，看来得恶补一下网络知识了，呵呵。。。。。。。

好言归正传，上代码-----------

add_password(),有四个参数，分别是  “ realm，域名，用户名，密码”

由于不知道realm具体内容，所以用None代替

=========================华丽的分割线========================================

import urllib2
def get_unread_msgs(user, passwd):
    password_mgr = urllib2.HTTPPasswordMgrWithDefaultRealm()
    password_mgr.add_password(None, 'http://svn.server.com', user, passwd)#由于不知道realm具体内容，所以用None代替
    handle = urllib2.HTTPBasicAuthHandler(password_mgr)
    opener = urllib2.build_opener(handle)
    urllib2.install_opener(opener)
    try:
        data = urllib2.urlopen('http://svn.server.com/test.zip').read()
        file = open('test.zip','wb')
        file.write(data)
        file.close()
    except Exception, e:
        if e.code == 401:
            print "authorization failed"            
        else:
            raise e # or do something else
    except:
        return None
    
    
if __name__ == "__main__":
    get_unread_msgs('username', 'password123456')

 

下面是GOOGLE而来的代码两例，未成功，留作参考吧。。

例子一：

import urllib2
def get_unread_msgs(user, passwd):
    auth = urllib2.HTTPBasicAuthHandler()
    auth.add_password(
            realm='New mail feed',
            uri='https://mail.google.com',
            user='%s'%user,
            passwd=passwd
            )
    opener = urllib2.build_opener(auth)
    urllib2.install_opener(opener)
    try:
        feed= urllib2.urlopen('https://mail.google.com/mail/feed/atom')
        return feed.read()
    except HTTPError, e:
        if e.code == 401:
            print "authorization failed"            
        else:
            raise e
    except:
        return None

例子二：

代码结构:

|__GetFilesFromSVN.py

|__config.ini

|__fileList.txt

config.ini：

　　[INFO]

　　baseurl = https://xxx/xxx/xxx/xxx/

　　user = 用户名

　　passwd = 密码

　　fileList= fileList.txt

fileList.txt:

　　aaaaa.txt

　　bbbbb.txt

　　ccccc.txt

 

 

#----------------------------------------------
# Author    : Jeff Yu
# Date      : 2012-8-13
# Function  : get files from SVN
#----------------------------------------------

#----------------------------------
# Step1: Get INFO
#----------------------------------
import sys,ConfigParser

try:
    configFile = open("config.ini","r")
except IOError:
    print "config.ini is not found"
    raw_input("")
    sys.exit()

config = ConfigParser.ConfigParser()
config.readfp(configFile)
configFile.close()

# get baseurl
try:
    baseurl = config.get("INFO","baseurl")

    # incase last "/" is missing in baseurl
    baseurl = baseurl.rstrip("/")
    baseurl = "%s/"%baseurl
except ConfigParser.NoOptionError: 
    print "baseurl is not found under section INFO in config.ini."
    raw_input("")
    sys.exit()
        
# get user
try: 
    user = config.get("INFO","user")
except ConfigParser.NoOptionError:   
    meg = "user is not found under section INFO in config.ini."
    raw_input("")
    sys.exit()

# get passwd    
try:
    passwd = config.get("INFO","passwd")
except ConfigParser.NoOptionError:
    meg = "passwd is not found under section INFO in config.ini."
    raw_input("")
    sys.exit()

# get fileList   
try: 
    fileList = config.get("INFO","fileList")
except ConfigParser.NoOptionError:
    meg = "fileList is not found under section INFO in config.ini."
    raw_input("")
    sys.exit()


#----------------------------------
# Step2: Auth
#----------------------------------
import urllib2
realm = "Subversion Repositories"
auth = urllib2.HTTPBasicAuthHandler()
auth.add_password(realm, baseurl, user, passwd)
opener = urllib2.build_opener(auth, urllib2.CacheFTPHandler)
urllib2.install_opener(opener)


#----------------------------------
# Step3: Create Folder
#----------------------------------
import os
folderName = "svnFile"
if not os.path.exists(folderName):
    os.mkdir(folderName)


#----------------------------------
# Step4: Get Files
#----------------------------------
fr = open(fileList,'r')
for i in fr:
    i = i.strip("\n")
    i = i.strip(" ")
    
    # ignore the blank line
    if i != "":
        url = "%s%s"%(baseurl,i)

        try:
            data = urllib2.urlopen(url)

            fw = open("%s/%s"%(folderName,i),'w')
            fw.write(data.read())
            fw.close()

            print "Download: %s."%i

        except urllib2.HTTPError, e:
            # HTTPError is a subclass of URLError
            # need to catch this exception first
            mesg = str(e).split(" ")
            errCode = mesg[2].rstrip(":")
            
            if errCode == "401":
                # HTTP Error 401: basic auth failed
                print "Can not login in, please check the user and passwd in config.ini."
                break
            elif errCode == "404":
                # HTTP Error 404: Not Found
                print "Not Found: %s"%i
            else:
                print e
                print "Failed to download %s"%i

        except urllib2.URLError:
            # 1.SVN server is down 
            # 2.URL is not correct
            print "Please check SVN Server status and baseurl in config.ini."
            break

fr.close()
raw_input("")

获取realm

import urllib2
import sys

url = '这里写URL'

username = '这里写用户名'
password = '这里写密码'

req = urllib2.Request(url)
try:
    handle = urllib2.urlopen(req)
except IOError, e:
    pass
else:
    print "This page isn't protected by authentication."
    sys.exit(1)

getrealm = e.headers['www-authenticate']
print getrealm