300行python代码的轻量级HTTPServer实现文件上传下载@慕课网原创_慕课网

最近，利用一下空余的时间对以前的Python知识进行了巩固和复习，便闲来无事写了一个轻量级的HTTPServer来实现文件上传下载，不废话，直接上代码：

#!/usr/bin/env python

# -*- coding: utf-8 -*-

__version__ = "0.1"

__all__ = ["SimpleHTTPRequestHandler"]

__author__ = "kumikoda"

__home_page__ = ""

import os,platform

import sys

import tornado.ioloop

import tornado.web

import shutil

import posixpath

import BaseHTTPServer

from SocketServer import ThreadingMixIn

import threading

import urllib, urllib2

import cgi

import mimetypes

import re

import time

try:

from cStringIO import StringIO

except ImportError:

from StringIO import StringIO

def get_ip_address(ifname):

import socket

import fcntl

import struct

s = socket.socket(socket.AP_INET, socket.SOCK_DGRAM)

return socket.inet_ntoa(fcntl.ioctl(

s.fileno(),

0x8915, # SIOCGIFADDR

struct.pack('256s', ifname[:15])

)[20:24])

class GetWanIp:

def getip(self):

try:

myip = self.visit("http://ip.taobao.com/service/getIpInfo.php?ip=myip")

except:

print "ip.taobao.com is Error"

try:

myip = self.visit("http://www.bliao.com/ip.phtml")

except:

print "bliao.com is Error"

try:

myip = self.visit("http://www.whereismyip.com/")

except: # 'NoneType' object has no attribute 'group'

print "whereismyip is Error"

myip = "127.0.0.1"

return myip

def visit(self,url):

#req = urllib2.Request(url)

#values = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.64 Safari/537',

# 'Referer': 'http://ip.taobao.com/ipSearch.php',

# 'ip': 'myip'

# }

#data = urllib.urlencode(values)

opener = urllib2.urlopen(url, None, 3)

if url == opener.geturl():

str = opener.read()

return re.search('(\d+\.){3}\d+',str).group(0)

def showTips():

print ""

print '----------------------------------------------------------------------->> '

try:

port = int(sys.argv[1])

except Exception, e:

print '-------->> Warning: Port is not given, will use deafult port: 8080 '

print '-------->> if you want to use other port, please execute: '

print '-------->> python SimpleHTTPServerWithUpload.py port '

print "-------->> port is a integer and it's range: 1024 < port < 65535 "

port = 8080

if not 1024 < port < 65535: port = 8080

# serveraddr = ('', port)

print '-------->> Now, listening at port ' + str(port) + ' ...'

osType = platform.system()

if osType == "Linux":

print '-------->> You can visit the URL: http://'+ GetWanIp().getip() + ':' +str(port)

else:

print '-------->> You can visit the URL: http://127.0.0.1:' +str(port)

print '----------------------------------------------------------------------->> '

print ""

return ('', port)

serveraddr = showTips()

def sizeof_fmt(num):

for x in ['bytes','KB','MB','GB']:

if num < 1024.0:

return "%3.1f%s" % (num, x)

num /= 1024.0

return "%3.1f%s" % (num, 'TB')

def modification_date(filename):

# t = os.path.getmtime(filename)

# return datetime.datetime.fromtimestamp(t)

return time.strftime("%Y-%m-%d %H:%M:%S",time.localtime(os.path.getmtime(filename)))

class SimpleHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):

"""Simple HTTP request handler with GET/HEAD/POST commands.

This serves files from the current directory and any of its

subdirectories. The MIME type for files is determined by

calling the .guess_type() method. And can reveive file uploaded

by client.

The GET/HEAD/POST requests are identical except that the HEAD

request omits the actual contents of the file.

"""

# The server software version. You may want to override this.

# The format is multiple whitespace-separated strings,

# where each string is of the form name[/version].

server_version = "SimpleHTTPWithUpload/" + __version__

def do_GET(self):

"""Serve a GET request."""

# print "....................", threading.currentThread().getName()

f = self.send_head()

if f:

self.copyfile(f, self.wfile)

f.close()

def do_HEAD(self):

"""Serve a HEAD request."""

f = self.send_head()

if f:

f.close()

def do_POST(self):

"""Serve a POST request."""

r, info = self.deal_post_data()

print r, info, "by: ", self.client_address

f = StringIO()

f.write('<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">')

f.write("<html>\n<title>Upload Result Page</title>\n")

f.write("<body>\n<h2>Upload Result Page</h2>\n")

f.write("<hr>\n")

if r:

f.write("<strong>Success:</strong>")

else:

f.write("<strong>Failed:</strong>")

f.write(info)

f.write("<br><a href=\"%s\">back</a>" % self.headers['referer'])

f.write("<hr><small>Powered By: bones7456, check new version at ")

f.write("<a href=\"http://li2z.cn/?s=SimpleHTTPServerWithUpload\">")

f.write("here</a>.</small></body>\n</html>\n")

length = f.tell()

f.seek(0)

self.send_response(200)

self.send_header("Content-type", "text/html")

self.send_header("Content-Length", str(length))

self.end_headers()

if f:

self.copyfile(f, self.wfile)

f.close()

def deal_post_data(self):

boundary = self.headers.plisttext.split("=")[1]

remainbytes = int(self.headers['content-length'])

line = self.rfile.readline()

remainbytes -= len(line)

if not boundary in line:

return (False, "Content NOT begin with boundary")

line = self.rfile.readline()

remainbytes -= len(line)

fn = re.findall(r'Content-Disposition.*name="file"; filename="(.*)"', line)

if not fn:

return (False, "Can't find out file name...")

path = self.translate_path(self.path)

osType = platform.system()

try:

if osType == "Linux":

fn = os.path.join(path, fn[0].decode('gbk').encode('utf-8'))

else:

fn = os.path.join(path, fn[0])

except Exception, e:

return (False, "文件名请不要用中文，或者使用IE上传中文名的文件。")

while os.path.exists(fn):

fn += "_"

line = self.rfile.readline()

remainbytes -= len(line)

line = self.rfile.readline()

remainbytes -= len(line)

try:

out = open(fn, 'wb')

except IOError:

return (False, "Can't create file to write, do you have permission to write?")

preline = self.rfile.readline()

remainbytes -= len(preline)

while remainbytes > 0:

line = self.rfile.readline()

remainbytes -= len(line)

if boundary in line:

preline = preline[0:-1]

if preline.endswith('\r'):

preline = preline[0:-1]

out.write(preline)

out.close()

return (True, "File '%s' upload success!" % fn)

else:

out.write(preline)

preline = line

return (False, "Unexpect Ends of data.")

def send_head(self):

"""Common code for GET and HEAD commands.

This sends the response code and MIME headers.

Return value is either a file object (which has to be copied

to the outputfile by the caller unless the command was HEAD,

and must be closed by the caller under all circumstances), or

None, in which case the caller has nothing further to do.

"""

path = self.translate_path(self.path)

f = None

if os.path.isdir(path):

if not self.path.endswith('/'):

# redirect browser - doing basically what apache does

self.send_response(301)

self.send_header("Location", self.path + "/")

self.end_headers()

return None

for index in "index.html", "index.htm":

index = os.path.join(path, index)

if os.path.exists(index):

path = index

break

else:

return self.list_directory(path)

ctype = self.guess_type(path)

try:

# Always read in binary mode. Opening files in text mode may cause

# newline translations, making the actual size of the content

# transmitted *less* than the content-length!

f = open(path, 'rb')

except IOError:

self.send_error(404, "File not found")

return None

self.send_response(200)

self.send_header("Content-type", ctype)

fs = os.fstat(f.fileno())

self.send_header("Content-Length", str(fs[6]))

self.send_header("Last-Modified", self.date_time_string(fs.st_mtime))

self.end_headers()

return f

def list_directory(self, path):

"""Helper to produce a directory listing (absent index.html).

Return value is either a file object, or None (indicating an

error). In either case, the headers are sent, making the

interface the same as for send_head().

"""

try:

list = os.listdir(path)

except os.error:

self.send_error(404, "No permission to list directory")

return None

list.sort(key=lambda a: a.lower())

f = StringIO()

displaypath = cgi.escape(urllib.unquote(self.path))

f.write('<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">')

f.write("<html>\n<title>Directory listing for %s</title>\n" % displaypath)

f.write("<body>\n<h2>Directory listing for %s</h2>\n" % displaypath)

f.write("<hr>\n")

f.write("<form ENCTYPE=\"multipart/form-data\" method=\"post\">")

f.write("<input name=\"file\" type=\"file\"/>")

f.write("<input type=\"submit\" value=\"upload\"/>")

f.write("&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp")

f.write("<input type=\"button\" value=\"HomePage\" onClick=\"location='/'\">")

f.write("</form>\n")

f.write("<hr>\n<ul>\n")

for name in list:

fullname = os.path.join(path, name)

colorName = displayname = linkname = name

# Append / for directories or @ for symbolic links

if os.path.isdir(fullname):

colorName = '<span >' + name + '/</span>'

displayname = name

linkname = name + "/"

if os.path.islink(fullname):

colorName = '<span >' + name + '@</span>'

displayname = name

# Note: a link to a directory displays with @ and links with /

filename = os.getcwd() + '/' + displaypath + displayname

f.write('<table><tr><td width="60%%"><a href="%s">%s</a></td><td width="20%%">%s</td><td width="20%%">%s</td></tr>\n'

% (urllib.quote(linkname), colorName,

sizeof_fmt(os.path.getsize(filename)), modification_date(filename)))

f.write("</table>\n<hr>\n</body>\n</html>\n")

length = f.tell()

f.seek(0)

self.send_response(200)

self.send_header("Content-type", "text/html")

self.send_header("Content-Length", str(length))

self.end_headers()

return f

def translate_path(self, path):

"""Translate a /-separated PATH to the local filename syntax.

Components that mean special things to the local file system

(e.g. drive or directory names) are ignored. (XXX They should

probably be diagnosed.)

"""

# abandon query parameters

path = path.split('?',1)[0]

path = path.split('#',1)[0]

path = posixpath.normpath(urllib.unquote(path))

words = path.split('/')

words = filter(None, words)

path = os.getcwd()

for word in words:

drive, word = os.path.splitdrive(word)

head, word = os.path.split(word)

if word in (os.curdir, os.pardir): continue

path = os.path.join(path, word)

return path

def copyfile(self, source, outputfile):

"""Copy all data between two file objects.

The SOURCE argument is a file object open for reading

(or anything with a read() method) and the DESTINATION

argument is a file object open for writing (or

anything with a write() method).

The only reason for overriding this would be to change

the block size or perhaps to replace newlines by CRLF

-- note however that this the default server uses this

to copy binary data as well.

"""

shutil.copyfileobj(source, outputfile)

def guess_type(self, path):

"""Guess the type of a file.

Argument is a PATH (a filename).

Return value is a string of the form type/subtype,

usable for a MIME Content-type header.

The default implementation looks the file's extension

up in the table self.extensions_map, using application/octet-stream

as a default; however it would be permissible (if

slow) to look inside the data to make a better guess.

"""

base, ext = posixpath.splitext(path)

if ext in self.extensions_map:

return self.extensions_map[ext]

ext = ext.lower()

if ext in self.extensions_map:

return self.extensions_map[ext]

else:

return self.extensions_map['']

if not mimetypes.inited:

mimetypes.init() # try to read system mime.types

extensions_map = mimetypes.types_map.copy()

extensions_map.update({

'': 'application/octet-stream', # Default

'.py': 'text/plain',

'.c': 'text/plain',

'.h': 'text/plain',

})

class ThreadingServer(ThreadingMixIn, BaseHTTPServer.HTTPServer):

pass

def test(HandlerClass = SimpleHTTPRequestHandler,

ServerClass = BaseHTTPServer.HTTPServer):

BaseHTTPServer.test(HandlerClass, ServerClass)

if __name__ == '__main__':

# test()

#单线程

# srvr = BaseHTTPServer.HTTPServer(serveraddr, SimpleHTTPRequestHandler)

#多线程

srvr = ThreadingServer(serveraddr, SimpleHTTPRequestHandler)

srvr.serve_forever()

最后的实现如下图：

wKiom1dekW6hO-0bAAAu8yuIMfI562.png-wh_50

wKioL1dekn-RjkxqAAA87wpZNJ8047.png-wh_50

wKiom1dekYvCAdD_AAAu8yuIMfI442.png-wh_50

如有不好的地方，勿喷。