python实现http服务器_Python实现简单HTTP服务器
Python实现简单HTTP服务器(一)
一.返回固定内容
复制代码
coding:utf-8
import socket
from multiprocessing import Process
def handle_client(client_socket):
"""
处理客户端请求
"""
request_data = client_socket.recv(1024)
print("request data:", request_data)
# 构造响应数据
response_start_line = "HTTP/1.1 200 OK\r\n"
response_headers = "Server: My server\r\n"
response_body = "
Python HTTP Test"
response = response_start_line + response_headers + "\r\n" + response_body
# 向客户端返回响应数据
client_socket.send(bytes(response, "utf-8"))
# 关闭客户端连接
client_socket.close()
if name == "main":
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_socket.bind(("", 8000))
server_socket.listen(128)
while True:
client_socket, client_address = server_socket.accept()
print("[%s, %s]用户连接上了" % client_address)
handle_client_process = Process(target=handle_client, args=(client_socket,))
handle_client_process.start()
client_socket.close()
二.返回静态文件内容
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coding:utf-8
import socket
import re
from multiprocessing import Process
设置静态文件根目录
HTML_ROOT_DIR = "./html"
def handle_client(client_socket):
"""
处理客户端请求
"""
# 获取客户端请求数据
request_data = client_socket.recv(1024)
print("request data:", request_data)
request_lines = request_data.splitlines()
# 解析请求报文
request_start_line = request_lines[0]
# 提取用户请求的文件名
file_name = re.match(r"\w+ +(/[^ ]*) ", request_start_line.decode("utf-8")).group(1)
if "/" == file_name:
file_name = "/index.html"
# 打开文件，读取内容
try:
file = open(HTML_ROOT_DIR + file_name, "rb")
except IOError:
response_start_line = "HTTP/1.1 404 Not Found\r\n"
response_headers = "Server: My server\r\n"
response_body = "The file is not found!"
else:
file_data = file.read()
file.close()
# 构造响应数据
response_start_line = "HTTP/1.1 200 OK\r\n"
response_headers = "Server: My server\r\n"
response_body = file_data.decode("utf-8")
response = response_start_line + response_headers + "\r\n" + response_body
print("response data:", response)
# 向客户端返回响应数据
client_socket.send(bytes(response, "utf-8"))
# 关闭客户端连接
client_socket.close()
if name == "main":
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
server_socket.bind(("", 8000))
server_socket.listen(128)
while True:
client_socket, client_address = server_socket.accept()
print("[%s, %s]用户连接上了" % client_address)
handle_client_process = Process(target=handle_client, args=(client_socket,))
handle_client_process.start()
client_socket.close()
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在程序所在目录下新建文件夹(html)，里面放入HTML文件，运行程序，打开浏览器输入：http://127.0.0.1:8000/，显示如下：
改为面向对象的程序：
复制代码
coding:utf-8
import socket
import re
from multiprocessing import Process
设置静态文件根目录
HTML_ROOT_DIR = "./html"
class HTTPServer(object):
def init(self):
self.server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
def start(self):
self.server_socket.listen(128)
while True:
client_socket, client_address = self.server_socket.accept()
print("[%s, %s]用户连接上了" % client_address)
handle_client_process = Process(target=self.handle_client, args=(client_socket,))
handle_client_process.start()
client_socket.close()
def handle_client(self, client_socket):
"""
处理客户端请求
"""
# 获取客户端请求数据
request_data = client_socket.recv(1024)
print("request data:", request_data)
request_lines = request_data.splitlines()
# 解析请求报文
request_start_line = request_lines[0]
# 提取用户请求的文件名
file_name = re.match(r"\w+ +(/[^ ]*) ", request_start_line.decode("utf-8")).group(1)
if "/" == file_name:
file_name = "/index.html"
# 打开文件，读取内容
try:
file = open(HTML_ROOT_DIR + file_name, "rb")
except IOError:
response_start_line = "HTTP/1.1 404 Not Found\r\n"
response_headers = "Server: My server\r\n"
response_body = "The file is not found!"
else:
file_data = file.read()
file.close()
# 构造响应数据
response_start_line = "HTTP/1.1 200 OK\r\n"
response_headers = "Server: My server\r\n"
response_body = file_data.decode("utf-8")
response = response_start_line + response_headers + "\r\n" + response_body
print("response data:", response)
# 向客户端返回响应数据
client_socket.send(bytes(response, "utf-8"))
# 关闭客户端连接
client_socket.close()
def bind(self, port):
self.server_socket.bind(("", port))
def main():
http_server = HTTPServer()
http_server.bind(8000)
http_server.start()
if name == "main":
main()
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三.返回动态内容(运用wsgi）
复制代码
coding:utf-8
import socket
import re
import sys
from multiprocessing import Process
设置静态文件根目录
HTML_ROOT_DIR = "./html"
设置动态文件根目录
WSGI_PYTHON_DIR = "./wsgitest"
class HTTPServer(object):
def init(self):
self.server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
def start(self):
self.server_socket.listen(128)
while True:
client_socket, client_address = self.server_socket.accept()
print("[%s, %s]用户连接上了" % client_address)
handle_client_process = Process(target=self.handle_client, args=(client_socket,))
handle_client_process.start()
client_socket.close()
def start_response(self, status, headers):
response_headers = "HTTP/1.1 " + status + "\r\n"
for header in headers:
response_headers += "%s: %s\r\n" % header
self.response_headers = response_headers
def handle_client(self, client_socket):
"""
处理客户端请求
"""
# 获取客户端请求数据
request_data = client_socket.recv(1024)
print("request data:", request_data)
request_lines = request_data.splitlines()
for line in request_lines:
print(line)
# 解析请求报文
request_start_line = request_lines[0]
# 提取用户请求的文件名及请求方法
file_name = re.match(r"\w+ +(/[^ ]*) ", request_start_line.decode("utf-8")).group(1)
method = re.match(r"(\w+) +/[^ ]* ", request_start_line.decode("utf-8")).group(1)
# 处理动态文件
if file_name.endswith(".py"):
try:
m = __import__(file_name[1:-3])
except Exception:
self.response_headers = "HTTP/1.1 404 Not Found\r\n"
response_body = "not found"
else:
env = {
"PATH_INFO": file_name,
"METHOD": method
}
response_body = m.application(env, self.start_response)
response = self.response_headers + "\r\n" + response_body
# 处理静态文件
else:
if "/" == file_name:
file_name = "/index.html"
# 打开文件，读取内容
try:
file = open(HTML_ROOT_DIR + file_name, "rb")
except IOError:
response_start_line = "HTTP/1.1 404 Not Found\r\n"
response_headers = "Server: My server\r\n"
response_body = "The file is not found!"
else:
file_data = file.read()
file.close()
# 构造响应数据
response_start_line = "HTTP/1.1 200 OK\r\n"
response_headers = "Server: My server\r\n"
response_body = file_data.decode("utf-8")
response = response_start_line + response_headers + "\r\n" + response_body
print("response data:", response)
# 向客户端返回响应数据
client_socket.send(bytes(response, "utf-8"))
# 关闭客户端连接
client_socket.close()
def bind(self, port):
self.server_socket.bind(("", port))
def main():
sys.path.insert(1, WSGI_PYTHON_DIR)
http_server = HTTPServer()
http_server.bind(8000)
http_server.start()
if name == "main":
main()
复制代码
在程序所在目录下新建文件夹(wsgitest)，里面放入python文件(ctime.py)
复制代码
coding:utf-8
import time
def application(env, start_response):
status = "200 OK"
headers = [("Content-Type", "text/plain")]
start_response(status, headers)
return time.ctime()
每刷新一次就执行相应python代码。