14

我在这个站点上找到了一个脚本,用于通过 python 的命令行运行一个简单的服务器。

我添加了一些print行,因为我想通过命令行打印出请求的 GET 和 POST 参数,但我似乎无法让它们出现在任何地方。

如果我只是打印我们的s变量(pprint (vars(s))),我最终会看到:

{'client_address': ('127.0.0.1', 53373),
 'close_connection': 1,
 'command': 'GET',
 'connection': <socket._socketobject object at 0x10b6560c0>,
 'headers': <mimetools.Message instance at 0x10b689ab8>,
 'path': '/favicon.ico',
 'raw_requestline': 'GET /favicon.ico HTTP/1.1\r\n',
 'request': <socket._socketobject object at 0x10b6560c0>,
 'request_version': 'HTTP/1.1',
 'requestline': 'GET /favicon.ico HTTP/1.1',
 'rfile': <socket._fileobject object at 0x10b6538d0>,
 'server': <BaseHTTPServer.HTTPServer instance at 0x10b6893f8>,
 'wfile': <socket._fileobject object at 0x10b6536d0>}

然后我尝试将print命令与每个索引 ( pprint (vars(s.connection))) 一起使用,但这不起作用。

这是修改后的脚本:

#!/usr/bin/python
import time
import BaseHTTPServer
from pprint import pprint

HOST_NAME = 'localhost' # !!!REMEMBER TO CHANGE THIS!!!
PORT_NUMBER = 9000 # Maybe set this to 9000.


class MyHandler(BaseHTTPServer.BaseHTTPRequestHandler):
        def do_HEAD(s):
                s.send_response(200)
                s.send_header("Content-type", "text/html")
                s.end_headers()
        def do_GET(s):
                """Respond to a GET request."""
                s.send_response(200)
                s.send_header("Content-type", "text/html")
                s.end_headers()
                s.wfile.write("<html><head><title>Title goes here.</title></head>")
                s.wfile.write("<body><form action='.' method='POST'><input name='x' value='1' /><input type='submit' /></form><p>This is a test.</p>")
                # If someone went to "http://something.somewhere.net/foo/bar/",
                # then s.path equals "/foo/bar/".
                s.wfile.write("<p>GET: You accessed path: %s</p>" % s.path)
                s.wfile.write("</body></html>")
                pprint (vars(s))
        def do_POST(s):
                """Respond to a POST request."""
                s.send_response(200)
                s.send_header("Content-type", "text/html")
                s.end_headers()
                s.wfile.write("<html><head><title>Title goes here.</title></head>")
                s.wfile.write("<body><p>This is a test.</p>")
                s.wfile.write("<body><form action='.' method='POST'><input type='text' name='xxxxxxxxxxxx' value='0000000000000000000000' /><input type='submit' /></form><p>This is a test.</p>")
                # If someone went to "http://something.somewhere.net/foo/bar/",
                # then s.path equals "/foo/bar/".
                s.wfile.write("<p>POST: You accessed path: %s</p>" % s.path)
                s.wfile.write("</body></html>")
                pprint (vars(s))
                pprint (vars(s.connection))
                pprint (vars(s.headers))
                pprint (vars(s.request))
                pprint (vars(s.rfile))
                pprint (vars(s.server))
                pprint (vars(s.wfile))
                pprint (vars(s.fp))
                """pprint (vars(s.request))"""

if __name__ == '__main__':
        server_class = BaseHTTPServer.HTTPServer
        httpd = server_class((HOST_NAME, PORT_NUMBER), MyHandler)
        print time.asctime(), "Server Starts - %s:%s" % (HOST_NAME, PORT_NUMBER)
        try:
                httpd.serve_forever()
        except KeyboardInterrupt:
                pass
        httpd.server_close()
        print time.asctime(), "Server Stops - %s:%s" % (HOST_NAME, PORT_NUMBER)

如何使用简单的脚本打印出 POST 和 GET 参数?

通过命令行所需的输出将类似于:

1.0.0.127. - - [03/Oct/2012 16:02:05] "POST / HTTP/1.1" 200 -
foo=1
bar=2
bis=3
4

2 回答 2

23

这不是很明显,但处理程序在幕后使用套接字。因此,您需要从套接字读取原始数据,然后对其进行解释。

使用urlparse模块。

  • 在 Python 2 中,您需要urlparse.parse_qs.
  • 在 Python 3 中,该库被重命名:你想要urllib.parse.parse_qs.

Import urlparse,然后do_POST像这样修改您的方法:

def do_POST(s):
        """Respond to a POST request."""

        # Extract and print the contents of the POST
        length = int(s.headers['Content-Length'])
        post_data = urlparse.parse_qs(s.rfile.read(length).decode('utf-8'))
        for key, value in post_data.iteritems():
            print "%s=%s" % (key, value)

        s.send_response(200)
        s.send_header("Content-type", "text/html")
        s.end_headers()
        ...

设置一个简单的测试客户端:

#!/usr/bin/env python

import urllib
import urllib2

url = 'http://localhost:9000'
post_dict = {'foo' : 1,
             'bar' : 2,
             'bis' : 3}

params = urllib.urlencode(post_dict)
post_req = urllib2.Request(url)
post_req.add_data(params)

response = urllib2.urlopen(post_req)
response_data = response.read()
response.close()
print response_data

启动服务器,然后运行客户端:

ire@localhost$ python http_server.py 
Wed Oct  3 21:38:51 2012 Server Starts - localhost:9000
foo=[u'1']
bar=[u'2']
bis=[u'3']
于 2012-10-04T04:42:37.337 回答
5

您可以使用cgi模块代替urlparse. cgi实现开箱即用的 POST 参数解析。使用经过良好测试的库似乎更好。

import cgi

def do_POST(self):
    form = cgi.FieldStorage(
        fp=self.rfile,
        headers=self.headers,
        environ={"REQUEST_METHOD": "POST"}
    )

    for item in form.list:
        print "%s=%s" % (item.name, item.value)
于 2013-10-03T16:08:22.160 回答