python创建http服务

背景

用java调用dll的时候经常出现 invalid memory access，改用java-Python-dll，
Python通过http服务给java提供功能。

环境

Python3.7
通过 http.server.BaseHTTPRequestHandler 来处理请求，并返回response

打印日志

filename为输入日志名称，默认是同目录下，没有该文件会新创建
filemode a 是追加写的模式，w是覆盖写

import logging

logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',
    filename="hhh.txt",
    filemode='a'
)
logging.info("xxxx")

调用dll

pchar - ctypes.c_char_p
integer 用了 bytes(0)，byref(ctypes.c_void_p(0)) 都OK，没有更深入去研究，如有错误请指正。

import ctypes
from ctypes import *

dll = ctypes.windll.LoadLibrary('C:\\xxx\\xxx.dll')
print("dll版本号为 ： "+ str(dll.GetVersion()) )
 name = ctypes.c_char_p(b"gc")
            roomno = ctypes.c_char_p(bytes(room.encode("utf-8")))
            begintime = ctypes.c_char_p(bytes(begin.encode("utf-8")))
            endtime = ctypes.c_char_p(bytes(end.encode("utf-8")))
            cardno = ctypes.c_void_p(0)
            dll.invoke...

http方案一

要注意 必须有 response = response_start_line + response_headers + “\r\n” + response_body
拼接应答报文后，才能给浏览器正确返回

# coding:utf-8
import socket
from multiprocessing import Process

def handle_client(client_socket):
    # 获取客户端请求数据
    request_data = client_socket.recv(1024)
    print("request:", 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 = "helloWorld!"
    response = response_start_line + response_headers + "\r\n" + response_body
    print("response:", 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.bind(("", 8888))
    server_socket.listen(120)
    print("success")

    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()

完整代码

另外一种http方式

#-.- coding:utf-8 -.-

from http.server import  HTTPServer
import ctypes
from ctypes import *
# HTTPRequestHandler class
import http.server
import socketserver
import logging

# pyinstaller -F
class testHTTPServer_RequestHandler(http.server.BaseHTTPRequestHandler):
    # GET
  def do_GET(self):
        logging.error('start make ')
        str2 =  str(self.path)
        print("revice： " + str2)
        if "xxx" in str2:
            # todo 你的具体业务操作
               
            if "xxx" in str2:
                print("hahaha")
                logging.error('hahaha')
                # response_body = "0"
                self.send_response(200)
                # Send headers
                self.send_header('Content-type','text/html')
                self.end_headers()
                # Send message back to client
                message = "Hello world!"
                # Write content as utf-8 data
                self.wfile.write(bytes(message, "utf8"))
                return
        else:
            print("1else")
            self.send_response(200)
            # Send headers
            self.send_header('Content-type', 'text/html')
            self.end_headers()
            # Send message back to client
            message = "Hello world222333!"
            # Write content as utf-8 data
            self.wfile.write(bytes(message, "utf8"))
            return
            
def run():
  print('starting server...')
  logging.basicConfig(
      level=logging.INFO,
      format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',
      filename="http_make_card.txt",
      filemode='a+'
  )
  # Server settings
  server_address = ('127.0.0.1', 8888)
  httpd = HTTPServer(server_address, testHTTPServer_RequestHandler)
  print('running server...')
  httpd.serve_forever()
run()

打包exe

pip install pyinstaller

pyinstaller -F xxx.py 即可，当前目录下生成

坑

1. No module named ‘http.server’; ‘http’ is not a package
   当时自己建了一个py叫http，删掉后正常
2. UnicodeDecodeError: ‘utf-8’ codec can’t decode byte 0xce in position 130: invalid continuat
   另存为utf-8即可