在 Python BaseHTTPServer 中获取 GET 和 POST 请求数据答案

【问题标题】：Getting GET and POST Request data in Python BaseHTTPServer在 Python BaseHTTPServer 中获取 GET 和 POST 请求数据
【发布时间】：2016-05-04 02:49:18
【问题描述】：

我在尝试获取 GET 和 POST 数据时遇到此错误。

Exception happened during processing of request from ('127.0.0.1', 62635)
Traceback (most recent call last):
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 295, in _handle_request_noblock
    self.process_request(request, client_address)
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 321, in process_request
    self.finish_request(request, client_address)
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 334, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 655, in __init__
    self.handle()
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/BaseHTTPServer.py", line 340, in handle
    self.handle_one_request()
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/BaseHTTPServer.py", line 328, in handle_one_request
    method()
  File "server1.py", line 30, in do_GET
    print form.getvalue["foo"]
TypeError: 'instancemethod' object has no attribute '__getitem__'

代码

from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
import SocketServer
import cgitb; cgitb.enable()
import cgi


class GP(BaseHTTPRequestHandler):
    def _set_headers(self):
        self.send_response(200)
        self.send_header('Content-type', 'text/html')
        self.end_headers()
    def do_HEAD(self):
        self._set_headers()
    def do_GET(self):
        self._set_headers()
        form = cgi.FieldStorage()
        print form.getvalue["foo"]
        self.wfile.write("<html><body><h1>Get Request Received!</h1></body></html>")
    def do_POST(self):
        self._set_headers()
        form = cgi.FieldStorage()
        print form.getvalue["foo"]
        self.wfile.write("<html><body><h1>POST Request Received!</h1></body></html>")

def run(server_class=HTTPServer, handler_class=GP, port=8088):
    server_address = ('', port)
    httpd = server_class(server_address, handler_class)
    print 'Server running at localhost:8088...'
    httpd.serve_forever()

run()

运行代码，我得到了上述错误。这段代码有什么问题？

python server1.py
curl http://localhost:8088?foo=bar
curl -d "foo=bar" http://localhost:8088

【问题讨论】：

标签： python post get

【解决方案1】：

要解决即时错误，您可以使用：

form.getvalue("foo")

代替：

form.getvalue["foo"]

导致：

TypeError: 'instancemethod' object has no attribute '__getitem__'

此外（如https://stackoverflow.com/a/25091973 中所建议的那样），您可能还想使用：

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

代替：

form = cgi.FieldStorage()

在POST 请求处理程序中。

在GET 请求处理程序中，您可能希望使用urlparse.parse_qs（对于Python 2）或urllib.parse.parse_qs（对于Python 3）而不是cgi.FieldStorage。

【讨论】：

【解决方案2】：

基于二叉桦树答案的工作版本

from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
from urlparse import parse_qs
import cgi

class GP(BaseHTTPRequestHandler):
    def _set_headers(self):
        self.send_response(200)
        self.send_header('Content-type', 'text/html')
        self.end_headers()
    def do_HEAD(self):
        self._set_headers()
    def do_GET(self):
        self._set_headers()
        print parse_qs(self.path[2:])
        self.wfile.write("<html><body><h1>Get Request Received!</h1></body></html>")
    def do_POST(self):
        self._set_headers()
        form = cgi.FieldStorage(
            fp=self.rfile,
            headers=self.headers,
            environ={'REQUEST_METHOD': 'POST'}
        )
        print form.getvalue("foo")
        self.wfile.write("<html><body><h1>POST Request Received!</h1></body></html>")

def run(server_class=HTTPServer, handler_class=GP, port=8088):
    server_address = ('', port)
    httpd = server_class(server_address, handler_class)
    print 'Server running at localhost:8088...'
    httpd.serve_forever()

run()

【讨论】：