WechatIMG62.jpeg
环境
-
macOS 10.14.6
-
Python 3.7.7
-
httpie
httpie 是一个命令行 HTTP 客户端。
安装httpie
- 安装
$ brew install httpie
这里使用 homebrew 安装 httpie。
- 查看版本
$ http --version
2.2.0
代码
#-*- coding:utf-8 -*-
import sys, os, urllib, subprocess
import urllib.parse
import urllib.request
from http.server import BaseHTTPRequestHandler,HTTPServer
#-------------------------------------------------------------------------------
class ServerException(Exception):
'''服务器内部错误'''
pass
#-------------------------------------------------------------------------------
class base_case(object):
'''条件处理基类'''
def handle_file(self, handler, full_path):
try:
with open(full_path, 'rb') as reader:
content = reader.read()
handler.send_content(content)
except IOError as msg:
msg = "'{0}' cannot be read: {1}".format(full_path, msg)
handler.handle_error(msg)
def index_path(self, handler):
return os.path.join(handler.full_path, 'index.html')
def test(self, handler):
assert False, 'Not implemented.'
def act(self, handler):
assert False, 'Not implemented.'
#-------------------------------------------------------------------------------
class case_no_file(base_case):
'''文件或目录不存在'''
def test(self, handler):
return not os.path.exists(handler.full_path)
def act(self, handler):
raise ServerException("'{0}' not found".format(handler.path))
#-------------------------------------------------------------------------------
class case_cgi_file(base_case):
'''可执行脚本'''
def run_cgi(self, handler):
data = subprocess.check_output(["python3", handler.full_path],shell=False)
handler.send_content(data)
def test(self, handler):
return os.path.isfile(handler.full_path) and \
handler.full_path.endswith('.py')
def act(self, handler):
self.run_cgi(handler)
#-------------------------------------------------------------------------------
class case_existing_file(base_case):
'''文件存在的情况'''
def test(self, handler):
return os.path.isfile(handler.full_path)
def act(self, handler):
self.handle_file(handler, handler.full_path)
#-------------------------------------------------------------------------------
class case_directory_index_file(base_case):
'''在根路径下返回主页文件'''
def test(self, handler):
return os.path.isdir(handler.full_path) and \
os.path.isfile(self.index_path(handler))
def act(self, handler):
self.handle_file(handler, self.index_path(handler))
#-------------------------------------------------------------------------------
class case_always_fail(base_case):
'''默认处理'''
def test(self, handler):
return True
def act(self, handler):
raise ServerException("Unknown object '{0}'".format(handler.path))
#-------------------------------------------------------------------------------
class RequestHandler(BaseHTTPRequestHandler):
'''
请求路径合法则返回相应处理
否则返回错误页面
'''
Cases = [case_no_file(),
case_cgi_file(),
case_existing_file(),
case_directory_index_file(),
case_always_fail()]
# 错误页面模板
Error_Page = """\
<html>
<body>
<h1>Error accessing {path}</h1>
<p>{msg}</p>
</body>
</html>
"""
# 处理get请求
def do_GET(self):
try:
# 得到完整的请求路径
self.full_path = os.getcwd() + self.path
# 遍历所有的情况并处理
for case in self.Cases:
if case.test(self):
case.act(self)
break
# 处理异常
except Exception as msg:
self.handle_error(msg)
# 处理post请求
def do_POST(self):
datas = self.rfile.read(int(self.headers['content-length']))
self.send_content(datas)
# 处理异常
def handle_error(self, msg):
content = self.Error_Page.format(path=self.path, msg=msg)
self.send_content(content.encode("utf-8"), 404)
# 发送数据到客户端
def send_content(self, content, status=200):
self.send_response(status)
self.send_header("Content-type", "text/html")
self.send_header("Content-Length", str(len(content)))
self.end_headers()
self.wfile.write(content)
#-------------------------------------------------------------------------------
if __name__ == '__main__':
serverAddress = ('', 8080)
server = HTTPServer(serverAddress, RequestHandler)
server.serve_forever()
创建 server.py，内容如上。
运行
- 启动服务器
$ python server.py &
&表示将这个任务放到后台去执行。
- get 请求
$ http 0.0.0.0:8080/home.html
HTTP/1.0 404 Not Found
Content-Length: 152
Content-type: text/html
Date: Thu, 13 Aug 2020 06:22:48 GMT
Server: BaseHTTP/0.6 Python/3.7.7
<html>
<body>
<h1>Error accessing /home.html</h1>
<p>'/home.html' not found</p>
</body>
</html>
- post 请求
$ http 0.0.0.0:8080 hello=world
HTTP/1.0 200 OK
Content-Length: 18
Content-type: text/html
Date: Thu, 13 Aug 2020 06:07:27 GMT
Server: BaseHTTP/0.6 Python/3.7.7
{
"hello": "world"
}
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