【Python】WSGI简单Web服务器，处理GET和POST请求

• • Python服务器代码
  • 静态HTML文件代码

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"""
Small wsgiref based web server. Takes a path to serve from and an
optional port number (defaults to 8000), then tries to serve files.
MIME types are guessed from the file names, 404 errors are raised
if the file is not found.
"""
import mimetypes
import os
import sys
from wsgiref import simple_server, util
from urllib.parse import parse_qs


def app(environ, respond):
    get_query_ =environ['QUERY_STRING']
    post_query_=environ["wsgi.input"].read(int(e)).decode("utf-8", 'ignore') if (e:=environ.get("CONTENT_LENGTH")) else None
    get_query =parse_qs(get_query_)
    post_query=parse_qs(post_query_)

    print("REQUEST_METHOD: "+environ['REQUEST_METHOD'])
    print("GET : ",(get_query))
    print("POST: ",(post_query))

    if(environ["PATH_INFO"].startswith(r"/post")):
        respond("200 OK", [("Content-Type", "text/html; charset=utf-8")])
        message=("Welcome, "+e[0]+" !") if (e:=post_query.get('username')) else "Welcome ! "
        html = '''    %s  
                Post Data:
%s
Path:
%s
''' %( message, str(post_query), environ["PATH_INFO"])
        return [html.encode("utf-8")]
    else:
        # Get the file name and MIME type
        fn = os.path.join(path,"res", environ["PATH_INFO"][1:])
        if "." not in fn.split(os.path.sep)[-1]:
            fn = os.path.join(fn, "index.html")
        mime_type = mimetypes.guess_type(fn)[0]


        # Return 200 OK if file exists, otherwise 404 Not Found
        if os.path.exists(fn):
            respond("200 OK", [("Content-Type", mime_type)])
            return util.FileWrapper(open(fn, "rb"))
        else:
            respond("404 Not Found", [("Content-Type", "text/plain")])
            return [b"not found"]


if __name__ == "__main__":
    # Get the path and port from command-line arguments
    path = sys.argv[1] if len(sys.argv) >1 else os.getcwd()
    port = int(sys.argv[2]) if len(sys.argv) >2 else 8000

    # Make and start the server until control-c
    httpd = simple_server.make_server("", port, app)
    print(f"Serving {path} on port {port}, control-C to stop")
    try:
        httpd.serve_forever()
    except KeyboardInterrupt:
        print("Shutting down.")
        httpd.server_close()

静态HTML文件代码

username:
password:
文本框:
download

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