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wxweven:
Surmounting 写道既然 Java 的跳表那么少,我决 ...
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暮雪云然:
写的不错,很透彻
Java静态内部类 -
bzhao:
好,赞扬!
Linux信号详解 -
jacktao219:
赞一个~! ,现在正在看redis 所以接触到跳表
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is_leon:
vote--后还要判断是否为0吧,如果为0则废掉重新置位can ...
现在有一个整数数组,已知一个数出现的次数超过了一半,请用O(n)的复杂度的算法找出这个数
1 Windows安装好Linux虚拟机
2 在Linux下运行一个 Python 实现的http服务器,代码如下:
#!/usr/bin/env python """Simple HTTP Server With Upload. This module builds on BaseHTTPServer by implementing the standard GET and HEAD requests in a fairly straightforward manner. """ __version__ = "0.1" __all__ = ["SimpleHTTPRequestHandler"] __author__ = "bones7456" __home_page__ = "http://li2z.cn/" import os import posixpath import BaseHTTPServer import urllib import cgi import shutil import mimetypes import re try: from cStringIO import StringIO except ImportError: from StringIO import StringIO 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. """ server_version = "SimpleHTTPWithUpload/" + __version__ def do_GET(self): """Serve a GET request.""" 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) fn = os.path.join(path, fn[0]) 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\"/></form>\n") f.write("<hr>\n<ul>\n") for name in list: fullname = os.path.join(path, name) displayname = linkname = name # Append / for directories or @ for symbolic links if os.path.isdir(fullname): displayname = name + "/" linkname = name + "/" if os.path.islink(fullname): displayname = name + "@" # Note: a link to a directory displays with @ and links with / f.write('<li><a href="%s">%s</a>\n' % (urllib.quote(linkname), cgi.escape(displayname))) f.write("</ul>\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', }) def test(HandlerClass = SimpleHTTPRequestHandler, ServerClass = BaseHTTPServer.HTTPServer): BaseHTTPServer.test(HandlerClass, ServerClass) if __name__ == '__main__': test()
运行:python SimpleHttpServer.py 8000
3 设置Virtualbox的连接方式为 NAT,并做好端口映射:
4 在 Windows 下,浏览器输入 http://127.0.0.1:8000 就可以上传和下载 Linux下的文件
发表评论
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Memcached源码分析之网络模型篇
2012-03-02 01:46 4141memcached 采用多线程的工作方式, 主线程接收连接, ... -
Memcached源码分析之内存管理篇
2012-02-26 15:04 12076使用命令 set(key, value) ... -
多线程与volatile变量
2012-02-25 17:07 5427volatile 修饰的变量表示改变量的值是易变的,编译 ... -
items
2011-11-12 19:30 71 上肢长 2 上臂长 ... -
fds
2011-11-12 19:23 10身高(静态) 眼高 ... -
xml
2011-11-12 18:58 7<item idx = "1" ... -
fff
2011-11-12 18:30 8上肢长 上臂长 两下颌角宽 两眼内宽 两耳屏点间 ... -
(转) memcached采用的网络模型
2011-10-12 01:58 12memcached采用的网络模型 ... -
Nginx 内存池
2011-10-12 01:46 7nginx的内存管理,主要是用来实现防止内存泄露,和内存碎片, ... -
Nginx负载均衡
2011-10-12 01:40 10nginx的upstream目前支持5种方式的分配 ... -
守护进程的实现
2011-09-30 01:43 18476个步骤 步骤1:创建子进程,杀死父进程,目的是为了步 ... -
非阻塞connect的实现
2011-09-30 01:12 14789步骤1: 设置非阻塞,启动连接 实现非阻塞 connect ... -
Memcached内存管理机制
2011-09-29 20:57 2358Slab 分配机制 Memcache ... -
关于大端法和小端法
2011-09-28 23:15 2353typedef union { int n; ... -
vim配置文件精简版
2011-09-19 09:37 1950"Get out of VI's compatibl ... -
(转) Linux 的僵尸(zombie)进程
2011-09-17 20:29 3190原文地址: http://cool ... -
Linux信号详解
2011-09-17 01:02 36355一 信号的种类 可靠信号与不可靠信号, 实时信号与非实时信号 ... -
消息队列
2011-09-15 22:16 12240一 应用场景 有很多业务, 客户端和内网都要进行数据传 ... -
vim + taglist + ctags + cscope 简单使用
2011-09-08 21:58 3560ctags用来跳转, taglist用来列出当前文件的变量, ... -
正确使用pthread_cond_wait
2011-09-08 00:22 2706消费者的两种等待方式: 方式1: if (empty(q ...
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